 |
Mesh Oriented datABase
(version 5.4.1)
Array-based unstructured mesh datastructure
|
|
Mesh Oriented datABase
(version 5.4.1)
Array-based unstructured mesh datastructure
|
#include "moab/verdict.h"#include "VerdictVector.hpp"#include "V_GaussIntegration.hpp"#include "verdict_defines.hpp"#include <memory.h>
Include dependency graph for V_HexMetric.cpp:Go to the source code of this file.
Defines | |
| #define | VERDICT_EXPORTS |
| #define | make_hex_nodes(coord, pos) |
| #define | make_edge_length_squares(edges, lengths) |
| #define | SQR(x) ( ( x ) * ( x ) ) |
Functions | |
| int | v_hex_get_weight (VerdictVector &v1, VerdictVector &v2, VerdictVector &v3) |
| weights based on the average size of a hex | |
| C_FUNC_DEF void | v_set_hex_size (double size) |
| returns the average volume of a hex | |
| void | make_hex_edges (double coordinates[][3], VerdictVector edges[12]) |
| make VerdictVectors from coordinates | |
| void | localize_hex_coordinates (double coordinates[][3], VerdictVector position[8]) |
| double | safe_ratio3 (const double numerator, const double denominator, const double max_ratio) |
| double | safe_ratio (const double numerator, const double denominator) |
| double | condition_comp (const VerdictVector &xxi, const VerdictVector &xet, const VerdictVector &xze) |
| double | oddy_comp (const VerdictVector &xxi, const VerdictVector &xet, const VerdictVector &xze) |
| double | hex_edge_length (int max_min, double coordinates[][3]) |
| calcualates edge lengths of a hex | |
| double | diag_length (int max_min, double coordinates[][3]) |
| VerdictVector | calc_hex_efg (int efg_index, VerdictVector coordinates[8]) |
| calculates efg values | |
| C_FUNC_DEF double | v_hex_edge_ratio (int, double coordinates[][3]) |
| Calculates hex edge ratio metric. | |
| C_FUNC_DEF double | v_hex_max_edge_ratio (int, double coordinates[][3]) |
| Calculates hex maximum of edge ratio. | |
| C_FUNC_DEF double | v_hex_skew (int, double coordinates[][3]) |
| Calculates hex skew metric. | |
| C_FUNC_DEF double | v_hex_taper (int, double coordinates[][3]) |
| Calculates hex taper metric. | |
| C_FUNC_DEF double | v_hex_volume (int, double coordinates[][3]) |
| Calculates hex volume. | |
| C_FUNC_DEF double | v_hex_stretch (int, double coordinates[][3]) |
| Calculates hex stretch metric. | |
| C_FUNC_DEF double | v_hex_diagonal (int, double coordinates[][3]) |
| Calculates hex diagonal metric. | |
| C_FUNC_DEF double | v_hex_dimension (int, double coordinates[][3]) |
| Calculates hex dimension metric. | |
| C_FUNC_DEF double | v_hex_oddy (int, double coordinates[][3]) |
| Calculates hex oddy metric. | |
| C_FUNC_DEF double | v_hex_med_aspect_frobenius (int, double coordinates[][3]) |
| Calculates hex condition metric. | |
| C_FUNC_DEF double | v_hex_max_aspect_frobenius (int, double coordinates[][3]) |
| Calculates hex condition metric. | |
| C_FUNC_DEF double | v_hex_condition (int, double coordinates[][3]) |
| C_FUNC_DEF double | v_hex_jacobian (int, double coordinates[][3]) |
| Calculates hex jacobian metric. | |
| C_FUNC_DEF double | v_hex_scaled_jacobian (int, double coordinates[][3]) |
| Calculates hex scaled jacobian metric. | |
| C_FUNC_DEF double | v_hex_shear (int, double coordinates[][3]) |
| Calculates hex shear metric. | |
| C_FUNC_DEF double | v_hex_shape (int, double coordinates[][3]) |
| Calculates hex shape metric. | |
| C_FUNC_DEF double | v_hex_relative_size_squared (int, double coordinates[][3]) |
| Calculates hex relative size metric. | |
| C_FUNC_DEF double | v_hex_shape_and_size (int num_nodes, double coordinates[][3]) |
| Calculates hex shape-size metric. | |
| C_FUNC_DEF double | v_hex_shear_and_size (int num_nodes, double coordinates[][3]) |
| Calculates hex shear-size metric. | |
| C_FUNC_DEF double | v_hex_distortion (int num_nodes, double coordinates[][3]) |
| Calculates hex distortion metric. | |
| C_FUNC_DEF void | v_hex_quality (int num_nodes, double coordinates[][3], unsigned int metrics_request_flag, HexMetricVals *metric_vals) |
| Calculates quality metrics for hexahedral elements. | |
Variables | |
| double | verdict_hex_size = 0 |
| the average volume of a hex | |
| #define make_edge_length_squares | ( | edges, | |
| lengths | |||
| ) |
{ \
for( int melii = 0; melii < 12; melii++ ) \
( lengths )[melii] = ( edges )[melii].length_squared(); \
}
Definition at line 68 of file V_HexMetric.cpp.
Referenced by v_hex_quality().
| #define make_hex_nodes | ( | coord, | |
| pos | |||
| ) |
for( int mhcii = 0; mhcii < 8; mhcii++ ) \ { \ ( pos )[mhcii].set( ( coord )[mhcii][0], ( coord )[mhcii][1], ( coord )[mhcii][2] ); \ }
Definition at line 62 of file V_HexMetric.cpp.
Referenced by v_hex_jacobian(), v_hex_max_aspect_frobenius(), v_hex_max_edge_ratio(), v_hex_med_aspect_frobenius(), v_hex_oddy(), v_hex_quality(), v_hex_relative_size_squared(), v_hex_scaled_jacobian(), v_hex_shape(), v_hex_shear(), v_hex_skew(), v_hex_taper(), and v_hex_volume().
| #define SQR | ( | x | ) | ( ( x ) * ( x ) ) |
Definition at line 783 of file V_HexMetric.cpp.
Referenced by v_hex_dimension().
| #define VERDICT_EXPORTS |
Definition at line 23 of file V_HexMetric.cpp.
| VerdictVector calc_hex_efg | ( | int | efg_index, |
| VerdictVector | coordinates[8] | ||
| ) |
calculates efg values
Definition at line 430 of file V_HexMetric.cpp.
References VerdictVector::set().
Referenced by v_hex_jacobian(), v_hex_max_aspect_frobenius(), v_hex_max_edge_ratio(), v_hex_oddy(), v_hex_quality(), v_hex_scaled_jacobian(), v_hex_skew(), v_hex_taper(), and v_hex_volume().
{
VerdictVector efg;
switch( efg_index )
{
case 1:
efg = coordinates[1];
efg += coordinates[2];
efg += coordinates[5];
efg += coordinates[6];
efg -= coordinates[0];
efg -= coordinates[3];
efg -= coordinates[4];
efg -= coordinates[7];
break;
case 2:
efg = coordinates[2];
efg += coordinates[3];
efg += coordinates[6];
efg += coordinates[7];
efg -= coordinates[0];
efg -= coordinates[1];
efg -= coordinates[4];
efg -= coordinates[5];
break;
case 3:
efg = coordinates[4];
efg += coordinates[5];
efg += coordinates[6];
efg += coordinates[7];
efg -= coordinates[0];
efg -= coordinates[1];
efg -= coordinates[2];
efg -= coordinates[3];
break;
case 12:
efg = coordinates[0];
efg += coordinates[2];
efg += coordinates[4];
efg += coordinates[6];
efg -= coordinates[1];
efg -= coordinates[3];
efg -= coordinates[5];
efg -= coordinates[7];
break;
case 13:
efg = coordinates[0];
efg += coordinates[3];
efg += coordinates[5];
efg += coordinates[6];
efg -= coordinates[1];
efg -= coordinates[2];
efg -= coordinates[4];
efg -= coordinates[7];
break;
case 23:
efg = coordinates[0];
efg += coordinates[1];
efg += coordinates[6];
efg += coordinates[7];
efg -= coordinates[2];
efg -= coordinates[3];
efg -= coordinates[4];
efg -= coordinates[5];
break;
case 123:
efg = coordinates[0];
efg += coordinates[2];
efg += coordinates[5];
efg += coordinates[7];
efg -= coordinates[1];
efg -= coordinates[5];
efg -= coordinates[6];
efg -= coordinates[2];
break;
default:
efg.set( 0, 0, 0 );
}
return efg;
}
| double condition_comp | ( | const VerdictVector & | xxi, |
| const VerdictVector & | xet, | ||
| const VerdictVector & | xze | ||
| ) |
Definition at line 227 of file V_HexMetric.cpp.
References VERDICT_DBL_MAX, and VERDICT_DBL_MIN.
Referenced by v_hex_max_aspect_frobenius(), v_hex_med_aspect_frobenius(), and v_hex_quality().
{
double det = xxi % ( xet * xze );
if( det <= VERDICT_DBL_MIN )
{
return VERDICT_DBL_MAX;
}
double term1 = xxi % xxi + xet % xet + xze % xze;
double term2 =
( ( xxi * xet ) % ( xxi * xet ) ) + ( ( xet * xze ) % ( xet * xze ) ) + ( ( xze * xxi ) % ( xze * xxi ) );
return sqrt( term1 * term2 ) / det;
}
| double diag_length | ( | int | max_min, |
| double | coordinates[][3] | ||
| ) |
Definition at line 380 of file V_HexMetric.cpp.
References VERDICT_MAX, and VERDICT_MIN.
Referenced by v_hex_diagonal(), v_hex_quality(), and v_hex_stretch().
{
double temp[3], diag[4];
int i;
// lengths^2 f diag nals
for( i = 0; i < 3; i++ )
{
temp[i] = coordinates[6][i] - coordinates[0][i];
temp[i] = temp[i] * temp[i];
}
diag[0] = sqrt( temp[0] + temp[1] + temp[2] );
for( i = 0; i < 3; i++ )
{
temp[i] = coordinates[4][i] - coordinates[2][i];
temp[i] = temp[i] * temp[i];
}
diag[1] = sqrt( temp[0] + temp[1] + temp[2] );
for( i = 0; i < 3; i++ )
{
temp[i] = coordinates[7][i] - coordinates[1][i];
temp[i] = temp[i] * temp[i];
}
diag[2] = sqrt( temp[0] + temp[1] + temp[2] );
for( i = 0; i < 3; i++ )
{
temp[i] = coordinates[5][i] - coordinates[3][i];
temp[i] = temp[i] * temp[i];
}
diag[3] = sqrt( temp[0] + temp[1] + temp[2] );
double diagonal = diag[0];
if( max_min == 0 ) // Return min diagonal
{
for( i = 1; i < 4; i++ )
diagonal = VERDICT_MIN( diagonal, diag[i] );
return (double)diagonal;
}
else // Return max diagonal
{
for( i = 1; i < 4; i++ )
diagonal = VERDICT_MAX( diagonal, diag[i] );
return (double)diagonal;
}
}
| double hex_edge_length | ( | int | max_min, |
| double | coordinates[][3] | ||
| ) |
calcualates edge lengths of a hex
Definition at line 274 of file V_HexMetric.cpp.
References VERDICT_MAX, and VERDICT_MIN.
Referenced by v_hex_stretch().
{
double temp[3], edge[12];
int i;
// lengths^2 of edges
for( i = 0; i < 3; i++ )
{
temp[i] = coordinates[1][i] - coordinates[0][i];
temp[i] = temp[i] * temp[i];
}
edge[0] = sqrt( temp[0] + temp[1] + temp[2] );
for( i = 0; i < 3; i++ )
{
temp[i] = coordinates[2][i] - coordinates[1][i];
temp[i] = temp[i] * temp[i];
}
edge[1] = sqrt( temp[0] + temp[1] + temp[2] );
for( i = 0; i < 3; i++ )
{
temp[i] = coordinates[3][i] - coordinates[2][i];
temp[i] = temp[i] * temp[i];
}
edge[2] = sqrt( temp[0] + temp[1] + temp[2] );
for( i = 0; i < 3; i++ )
{
temp[i] = coordinates[0][i] - coordinates[3][i];
temp[i] = temp[i] * temp[i];
}
edge[3] = sqrt( temp[0] + temp[1] + temp[2] );
for( i = 0; i < 3; i++ )
{
temp[i] = coordinates[5][i] - coordinates[4][i];
temp[i] = temp[i] * temp[i];
}
edge[4] = sqrt( temp[0] + temp[1] + temp[2] );
for( i = 0; i < 3; i++ )
{
temp[i] = coordinates[6][i] - coordinates[5][i];
temp[i] = temp[i] * temp[i];
}
edge[5] = sqrt( temp[0] + temp[1] + temp[2] );
for( i = 0; i < 3; i++ )
{
temp[i] = coordinates[7][i] - coordinates[6][i];
temp[i] = temp[i] * temp[i];
}
edge[6] = sqrt( temp[0] + temp[1] + temp[2] );
for( i = 0; i < 3; i++ )
{
temp[i] = coordinates[4][i] - coordinates[7][i];
temp[i] = temp[i] * temp[i];
}
edge[7] = sqrt( temp[0] + temp[1] + temp[2] );
for( i = 0; i < 3; i++ )
{
temp[i] = coordinates[4][i] - coordinates[0][i];
temp[i] = temp[i] * temp[i];
}
edge[8] = sqrt( temp[0] + temp[1] + temp[2] );
for( i = 0; i < 3; i++ )
{
temp[i] = coordinates[5][i] - coordinates[1][i];
temp[i] = temp[i] * temp[i];
}
edge[9] = sqrt( temp[0] + temp[1] + temp[2] );
for( i = 0; i < 3; i++ )
{
temp[i] = coordinates[6][i] - coordinates[2][i];
temp[i] = temp[i] * temp[i];
}
edge[10] = sqrt( temp[0] + temp[1] + temp[2] );
for( i = 0; i < 3; i++ )
{
temp[i] = coordinates[7][i] - coordinates[3][i];
temp[i] = temp[i] * temp[i];
}
edge[11] = sqrt( temp[0] + temp[1] + temp[2] );
double _edge = edge[0];
if( max_min == 0 )
{
for( i = 1; i < 12; i++ )
_edge = VERDICT_MIN( _edge, edge[i] );
return (double)_edge;
}
else
{
for( i = 1; i < 12; i++ )
_edge = VERDICT_MAX( _edge, edge[i] );
return (double)_edge;
}
}
| void localize_hex_coordinates | ( | double | coordinates[][3], |
| VerdictVector | position[8] | ||
| ) |
localizes hex coordinates
Definition at line 106 of file V_HexMetric.cpp.
References VerdictVector::set(), VerdictVector::x(), VerdictVector::y(), and VerdictVector::z().
{
int ii;
for( ii = 0; ii < 8; ii++ )
{
position[ii].set( coordinates[ii][0], coordinates[ii][1], coordinates[ii][2] );
}
// ... Make centroid of element the center of coordinate system
VerdictVector point_1256 = position[1];
point_1256 += position[2];
point_1256 += position[5];
point_1256 += position[6];
VerdictVector point_0374 = position[0];
point_0374 += position[3];
point_0374 += position[7];
point_0374 += position[4];
VerdictVector centroid = point_1256;
centroid += point_0374;
centroid /= 8.0;
int i;
for( i = 0; i < 8; i++ )
position[i] -= centroid;
// ... Rotate element such that center of side 1-2 and 0-3 define X axis
double DX = point_1256.x() - point_0374.x();
double DY = point_1256.y() - point_0374.y();
double DZ = point_1256.z() - point_0374.z();
double AMAGX = sqrt( DX * DX + DZ * DZ );
double AMAGY = sqrt( DX * DX + DY * DY + DZ * DZ );
double FMAGX = AMAGX == 0.0 ? 1.0 : 0.0;
double FMAGY = AMAGY == 0.0 ? 1.0 : 0.0;
double CZ = DX / ( AMAGX + FMAGX ) + FMAGX;
double SZ = DZ / ( AMAGX + FMAGX );
double CY = AMAGX / ( AMAGY + FMAGY ) + FMAGY;
double SY = DY / ( AMAGY + FMAGY );
double temp;
for( i = 0; i < 8; i++ )
{
temp = CY * CZ * position[i].x() + CY * SZ * position[i].z() + SY * position[i].y();
position[i].y( -SY * CZ * position[i].x() - SY * SZ * position[i].z() + CY * position[i].y() );
position[i].z( -SZ * position[i].x() + CZ * position[i].z() );
position[i].x( temp );
}
// ... Now, rotate about Y
VerdictVector delta = -position[0];
delta -= position[1];
delta += position[2];
delta += position[3];
delta -= position[4];
delta -= position[5];
delta += position[6];
delta += position[7];
DY = delta.y();
DZ = delta.z();
AMAGY = sqrt( DY * DY + DZ * DZ );
FMAGY = AMAGY == 0.0 ? 1.0 : 0.0;
double CX = DY / ( AMAGY + FMAGY ) + FMAGY;
double SX = DZ / ( AMAGY + FMAGY );
for( i = 0; i < 8; i++ )
{
temp = CX * position[i].y() + SX * position[i].z();
position[i].z( -SX * position[i].y() + CX * position[i].z() );
position[i].y( temp );
}
}
| void make_hex_edges | ( | double | coordinates[][3], |
| VerdictVector | edges[12] | ||
| ) |
make VerdictVectors from coordinates
Definition at line 75 of file V_HexMetric.cpp.
References VerdictVector::set().
Referenced by v_hex_edge_ratio(), and v_hex_quality().
{
edges[0].set( coordinates[1][0] - coordinates[0][0], coordinates[1][1] - coordinates[0][1],
coordinates[1][2] - coordinates[0][2] );
edges[1].set( coordinates[2][0] - coordinates[1][0], coordinates[2][1] - coordinates[1][1],
coordinates[2][2] - coordinates[1][2] );
edges[2].set( coordinates[3][0] - coordinates[2][0], coordinates[3][1] - coordinates[2][1],
coordinates[3][2] - coordinates[2][2] );
edges[3].set( coordinates[0][0] - coordinates[3][0], coordinates[0][1] - coordinates[3][1],
coordinates[0][2] - coordinates[3][2] );
edges[4].set( coordinates[5][0] - coordinates[4][0], coordinates[5][1] - coordinates[4][1],
coordinates[5][2] - coordinates[4][2] );
edges[5].set( coordinates[6][0] - coordinates[5][0], coordinates[6][1] - coordinates[5][1],
coordinates[6][2] - coordinates[5][2] );
edges[6].set( coordinates[7][0] - coordinates[6][0], coordinates[7][1] - coordinates[6][1],
coordinates[7][2] - coordinates[6][2] );
edges[7].set( coordinates[4][0] - coordinates[7][0], coordinates[4][1] - coordinates[7][1],
coordinates[4][2] - coordinates[7][2] );
edges[8].set( coordinates[4][0] - coordinates[0][0], coordinates[4][1] - coordinates[0][1],
coordinates[4][2] - coordinates[0][2] );
edges[9].set( coordinates[5][0] - coordinates[1][0], coordinates[5][1] - coordinates[1][1],
coordinates[5][2] - coordinates[1][2] );
edges[10].set( coordinates[6][0] - coordinates[2][0], coordinates[6][1] - coordinates[2][1],
coordinates[6][2] - coordinates[2][2] );
edges[11].set( coordinates[7][0] - coordinates[3][0], coordinates[7][1] - coordinates[3][1],
coordinates[7][2] - coordinates[3][2] );
}
| double oddy_comp | ( | const VerdictVector & | xxi, |
| const VerdictVector & | xet, | ||
| const VerdictVector & | xze | ||
| ) |
Definition at line 243 of file V_HexMetric.cpp.
References VERDICT_DBL_MAX, and VERDICT_DBL_MIN.
Referenced by v_hex_oddy(), and v_hex_quality().
{
static const double third = 1.0 / 3.0;
double g11, g12, g13, g22, g23, g33, rt_g;
g11 = xxi % xxi;
g12 = xxi % xet;
g13 = xxi % xze;
g22 = xet % xet;
g23 = xet % xze;
g33 = xze % xze;
rt_g = xxi % ( xet * xze );
double oddy_metric;
if( rt_g > VERDICT_DBL_MIN )
{
double norm_G_squared = g11 * g11 + 2.0 * g12 * g12 + 2.0 * g13 * g13 + g22 * g22 + 2.0 * g23 * g23 + g33 * g33;
double norm_J_squared = g11 + g22 + g33;
oddy_metric = ( norm_G_squared - third * norm_J_squared * norm_J_squared ) / pow( rt_g, 4. * third );
}
else
oddy_metric = VERDICT_DBL_MAX;
return oddy_metric;
}
| double safe_ratio | ( | const double | numerator, |
| const double | denominator | ||
| ) |
Definition at line 209 of file V_HexMetric.cpp.
References VERDICT_DBL_MAX, and VERDICT_DBL_MIN.
Referenced by v_hex_diagonal(), v_hex_max_edge_ratio(), v_hex_quality(), v_hex_stretch(), and v_hex_taper().
{
double return_value;
const double filter_n = VERDICT_DBL_MAX;
const double filter_d = VERDICT_DBL_MIN;
if( fabs( numerator ) <= filter_n && fabs( denominator ) >= filter_d )
{
return_value = numerator / denominator;
}
else
{
return_value = VERDICT_DBL_MAX;
}
return return_value;
}
| double safe_ratio3 | ( | const double | numerator, |
| const double | denominator, | ||
| const double | max_ratio | ||
| ) |
Definition at line 186 of file V_HexMetric.cpp.
{
// this filter is essential for good running time in practice
double return_value;
const double filter_n = max_ratio * 1.0e-16;
const double filter_d = 1.0e-16;
if( fabs( numerator ) <= filter_n && fabs( denominator ) >= filter_d )
{
return_value = numerator / denominator;
}
else
{
return_value = fabs( numerator ) / max_ratio >= fabs( denominator )
? ( ( numerator >= 0.0 && denominator >= 0.0 ) || ( numerator < 0.0 && denominator < 0.0 )
? max_ratio
: -max_ratio )
: numerator / denominator;
}
return return_value;
}
| C_FUNC_DEF double v_hex_condition | ( | int | , |
| double | coordinates[][3] | ||
| ) |
The maximum Frobenius condition of a hex, a.k.a. condition NB (P. Pebay 01/25/07): this method is maintained for backwards compatibility only. It will become deprecated at some point.
Definition at line 1371 of file V_HexMetric.cpp.
References v_hex_max_aspect_frobenius().
Referenced by moab::VerdictWrapper::quality_measure().
{
return v_hex_max_aspect_frobenius( 8, coordinates );
}
| C_FUNC_DEF double v_hex_diagonal | ( | int | , |
| double | coordinates[][3] | ||
| ) |
Calculates hex diagonal metric.
diagonal ratio of a hex
Minimum diagonal length / maximum diagonal length
Definition at line 771 of file V_HexMetric.cpp.
References diag_length(), safe_ratio(), VERDICT_DBL_MAX, VERDICT_MAX, and VERDICT_MIN.
Referenced by moab::VerdictWrapper::quality_measure(), and v_hex_quality().
{
double min_diag = diag_length( 0, coordinates );
double max_diag = diag_length( 1, coordinates );
double diagonal = safe_ratio( min_diag, max_diag );
if( diagonal > 0 ) return (double)VERDICT_MIN( diagonal, VERDICT_DBL_MAX );
return (double)VERDICT_MAX( diagonal, -VERDICT_DBL_MAX );
}
| C_FUNC_DEF double v_hex_dimension | ( | int | , |
| double | coordinates[][3] | ||
| ) |
Calculates hex dimension metric.
dimension of a hex
Pronto-specific characteristic length for stable time step calculation. Char_length = Volume / 2 grad Volume
Definition at line 791 of file V_HexMetric.cpp.
References SQR.
Referenced by moab::VerdictWrapper::quality_measure(), and v_hex_quality().
{
double gradop[9][4];
double x1 = coordinates[0][0];
double x2 = coordinates[1][0];
double x3 = coordinates[2][0];
double x4 = coordinates[3][0];
double x5 = coordinates[4][0];
double x6 = coordinates[5][0];
double x7 = coordinates[6][0];
double x8 = coordinates[7][0];
double y1 = coordinates[0][1];
double y2 = coordinates[1][1];
double y3 = coordinates[2][1];
double y4 = coordinates[3][1];
double y5 = coordinates[4][1];
double y6 = coordinates[5][1];
double y7 = coordinates[6][1];
double y8 = coordinates[7][1];
double z1 = coordinates[0][2];
double z2 = coordinates[1][2];
double z3 = coordinates[2][2];
double z4 = coordinates[3][2];
double z5 = coordinates[4][2];
double z6 = coordinates[5][2];
double z7 = coordinates[6][2];
double z8 = coordinates[7][2];
double z24 = z2 - z4;
double z52 = z5 - z2;
double z45 = z4 - z5;
gradop[1][1] =
( y2 * ( z6 - z3 - z45 ) + y3 * z24 + y4 * ( z3 - z8 - z52 ) + y5 * ( z8 - z6 - z24 ) + y6 * z52 + y8 * z45 ) /
12.0;
double z31 = z3 - z1;
double z63 = z6 - z3;
double z16 = z1 - z6;
gradop[2][1] =
( y3 * ( z7 - z4 - z16 ) + y4 * z31 + y1 * ( z4 - z5 - z63 ) + y6 * ( z5 - z7 - z31 ) + y7 * z63 + y5 * z16 ) /
12.0;
double z42 = z4 - z2;
double z74 = z7 - z4;
double z27 = z2 - z7;
gradop[3][1] =
( y4 * ( z8 - z1 - z27 ) + y1 * z42 + y2 * ( z1 - z6 - z74 ) + y7 * ( z6 - z8 - z42 ) + y8 * z74 + y6 * z27 ) /
12.0;
double z13 = z1 - z3;
double z81 = z8 - z1;
double z38 = z3 - z8;
gradop[4][1] =
( y1 * ( z5 - z2 - z38 ) + y2 * z13 + y3 * ( z2 - z7 - z81 ) + y8 * ( z7 - z5 - z13 ) + y5 * z81 + y7 * z38 ) /
12.0;
double z86 = z8 - z6;
double z18 = z1 - z8;
double z61 = z6 - z1;
gradop[5][1] =
( y8 * ( z4 - z7 - z61 ) + y7 * z86 + y6 * ( z7 - z2 - z18 ) + y1 * ( z2 - z4 - z86 ) + y4 * z18 + y2 * z61 ) /
12.0;
double z57 = z5 - z7;
double z25 = z2 - z5;
double z72 = z7 - z2;
gradop[6][1] =
( y5 * ( z1 - z8 - z72 ) + y8 * z57 + y7 * ( z8 - z3 - z25 ) + y2 * ( z3 - z1 - z57 ) + y1 * z25 + y3 * z72 ) /
12.0;
double z68 = z6 - z8;
double z36 = z3 - z6;
double z83 = z8 - z3;
gradop[7][1] =
( y6 * ( z2 - z5 - z83 ) + y5 * z68 + y8 * ( z5 - z4 - z36 ) + y3 * ( z4 - z2 - z68 ) + y2 * z36 + y4 * z83 ) /
12.0;
double z75 = z7 - z5;
double z47 = z4 - z7;
double z54 = z5 - z4;
gradop[8][1] =
( y7 * ( z3 - z6 - z54 ) + y6 * z75 + y5 * ( z6 - z1 - z47 ) + y4 * ( z1 - z3 - z75 ) + y3 * z47 + y1 * z54 ) /
12.0;
double x24 = x2 - x4;
double x52 = x5 - x2;
double x45 = x4 - x5;
gradop[1][2] =
( z2 * ( x6 - x3 - x45 ) + z3 * x24 + z4 * ( x3 - x8 - x52 ) + z5 * ( x8 - x6 - x24 ) + z6 * x52 + z8 * x45 ) /
12.0;
double x31 = x3 - x1;
double x63 = x6 - x3;
double x16 = x1 - x6;
gradop[2][2] =
( z3 * ( x7 - x4 - x16 ) + z4 * x31 + z1 * ( x4 - x5 - x63 ) + z6 * ( x5 - x7 - x31 ) + z7 * x63 + z5 * x16 ) /
12.0;
double x42 = x4 - x2;
double x74 = x7 - x4;
double x27 = x2 - x7;
gradop[3][2] =
( z4 * ( x8 - x1 - x27 ) + z1 * x42 + z2 * ( x1 - x6 - x74 ) + z7 * ( x6 - x8 - x42 ) + z8 * x74 + z6 * x27 ) /
12.0;
double x13 = x1 - x3;
double x81 = x8 - x1;
double x38 = x3 - x8;
gradop[4][2] =
( z1 * ( x5 - x2 - x38 ) + z2 * x13 + z3 * ( x2 - x7 - x81 ) + z8 * ( x7 - x5 - x13 ) + z5 * x81 + z7 * x38 ) /
12.0;
double x86 = x8 - x6;
double x18 = x1 - x8;
double x61 = x6 - x1;
gradop[5][2] =
( z8 * ( x4 - x7 - x61 ) + z7 * x86 + z6 * ( x7 - x2 - x18 ) + z1 * ( x2 - x4 - x86 ) + z4 * x18 + z2 * x61 ) /
12.0;
double x57 = x5 - x7;
double x25 = x2 - x5;
double x72 = x7 - x2;
gradop[6][2] =
( z5 * ( x1 - x8 - x72 ) + z8 * x57 + z7 * ( x8 - x3 - x25 ) + z2 * ( x3 - x1 - x57 ) + z1 * x25 + z3 * x72 ) /
12.0;
double x68 = x6 - x8;
double x36 = x3 - x6;
double x83 = x8 - x3;
gradop[7][2] =
( z6 * ( x2 - x5 - x83 ) + z5 * x68 + z8 * ( x5 - x4 - x36 ) + z3 * ( x4 - x2 - x68 ) + z2 * x36 + z4 * x83 ) /
12.0;
double x75 = x7 - x5;
double x47 = x4 - x7;
double x54 = x5 - x4;
gradop[8][2] =
( z7 * ( x3 - x6 - x54 ) + z6 * x75 + z5 * ( x6 - x1 - x47 ) + z4 * ( x1 - x3 - x75 ) + z3 * x47 + z1 * x54 ) /
12.0;
double y24 = y2 - y4;
double y52 = y5 - y2;
double y45 = y4 - y5;
gradop[1][3] =
( x2 * ( y6 - y3 - y45 ) + x3 * y24 + x4 * ( y3 - y8 - y52 ) + x5 * ( y8 - y6 - y24 ) + x6 * y52 + x8 * y45 ) /
12.0;
double y31 = y3 - y1;
double y63 = y6 - y3;
double y16 = y1 - y6;
gradop[2][3] =
( x3 * ( y7 - y4 - y16 ) + x4 * y31 + x1 * ( y4 - y5 - y63 ) + x6 * ( y5 - y7 - y31 ) + x7 * y63 + x5 * y16 ) /
12.0;
double y42 = y4 - y2;
double y74 = y7 - y4;
double y27 = y2 - y7;
gradop[3][3] =
( x4 * ( y8 - y1 - y27 ) + x1 * y42 + x2 * ( y1 - y6 - y74 ) + x7 * ( y6 - y8 - y42 ) + x8 * y74 + x6 * y27 ) /
12.0;
double y13 = y1 - y3;
double y81 = y8 - y1;
double y38 = y3 - y8;
gradop[4][3] =
( x1 * ( y5 - y2 - y38 ) + x2 * y13 + x3 * ( y2 - y7 - y81 ) + x8 * ( y7 - y5 - y13 ) + x5 * y81 + x7 * y38 ) /
12.0;
double y86 = y8 - y6;
double y18 = y1 - y8;
double y61 = y6 - y1;
gradop[5][3] =
( x8 * ( y4 - y7 - y61 ) + x7 * y86 + x6 * ( y7 - y2 - y18 ) + x1 * ( y2 - y4 - y86 ) + x4 * y18 + x2 * y61 ) /
12.0;
double y57 = y5 - y7;
double y25 = y2 - y5;
double y72 = y7 - y2;
gradop[6][3] =
( x5 * ( y1 - y8 - y72 ) + x8 * y57 + x7 * ( y8 - y3 - y25 ) + x2 * ( y3 - y1 - y57 ) + x1 * y25 + x3 * y72 ) /
12.0;
double y68 = y6 - y8;
double y36 = y3 - y6;
double y83 = y8 - y3;
gradop[7][3] =
( x6 * ( y2 - y5 - y83 ) + x5 * y68 + x8 * ( y5 - y4 - y36 ) + x3 * ( y4 - y2 - y68 ) + x2 * y36 + x4 * y83 ) /
12.0;
double y75 = y7 - y5;
double y47 = y4 - y7;
double y54 = y5 - y4;
gradop[8][3] =
( x7 * ( y3 - y6 - y54 ) + x6 * y75 + x5 * ( y6 - y1 - y47 ) + x4 * ( y1 - y3 - y75 ) + x3 * y47 + x1 * y54 ) /
12.0;
// calculate element volume and characteristic element aspect ratio
// (used in time step and hourglass control) -
double volume = coordinates[0][0] * gradop[1][1] + coordinates[1][0] * gradop[2][1] +
coordinates[2][0] * gradop[3][1] + coordinates[3][0] * gradop[4][1] +
coordinates[4][0] * gradop[5][1] + coordinates[5][0] * gradop[6][1] +
coordinates[6][0] * gradop[7][1] + coordinates[7][0] * gradop[8][1];
double aspect =
.5 * SQR( volume ) /
( SQR( gradop[1][1] ) + SQR( gradop[2][1] ) + SQR( gradop[3][1] ) + SQR( gradop[4][1] ) + SQR( gradop[5][1] ) +
SQR( gradop[6][1] ) + SQR( gradop[7][1] ) + SQR( gradop[8][1] ) + SQR( gradop[1][2] ) + SQR( gradop[2][2] ) +
SQR( gradop[3][2] ) + SQR( gradop[4][2] ) + SQR( gradop[5][2] ) + SQR( gradop[6][2] ) + SQR( gradop[7][2] ) +
SQR( gradop[8][2] ) + SQR( gradop[1][3] ) + SQR( gradop[2][3] ) + SQR( gradop[3][3] ) + SQR( gradop[4][3] ) +
SQR( gradop[5][3] ) + SQR( gradop[6][3] ) + SQR( gradop[7][3] ) + SQR( gradop[8][3] ) );
return (double)sqrt( aspect );
}
| C_FUNC_DEF double v_hex_distortion | ( | int | num_nodes, |
| double | coordinates[][3] | ||
| ) |
Calculates hex distortion metric.
distortion of a hex
Definition at line 2228 of file V_HexMetric.cpp.
References GaussIntegration::calculate_derivative_at_nodes_3d(), GaussIntegration::calculate_shape_function_3d_hex(), GaussIntegration::get_shape_func(), GaussIntegration::initialize(), maxNumberNodes, maxTotalNumberGaussPoints, VerdictVector::set(), and VERDICT_DBL_MAX.
Referenced by moab::VerdictWrapper::quality_measure(), and v_hex_quality().
{
// use 2x2 gauss points for linear hex and 3x3 for 2nd order hex
int number_of_gauss_points = 0;
if( num_nodes == 8 )
// 2x2 quadrature rule
number_of_gauss_points = 2;
else if( num_nodes == 20 )
// 3x3 quadrature rule
number_of_gauss_points = 3;
int number_dimension = 3;
int total_number_of_gauss_points = number_of_gauss_points * number_of_gauss_points * number_of_gauss_points;
double distortion = VERDICT_DBL_MAX;
// maxTotalNumberGaussPoints =27, maxNumberNodes = 20
// they are defined in GaussIntegration.hpp
// This is used to make these arrays static.
// I tried dynamically allocated arrays but the new and delete
// was very expensive
double shape_function[maxTotalNumberGaussPoints][maxNumberNodes];
double dndy1[maxTotalNumberGaussPoints][maxNumberNodes];
double dndy2[maxTotalNumberGaussPoints][maxNumberNodes];
double dndy3[maxTotalNumberGaussPoints][maxNumberNodes];
double weight[maxTotalNumberGaussPoints];
// create an object of GaussIntegration
GaussIntegration::initialize( number_of_gauss_points, num_nodes, number_dimension );
GaussIntegration::calculate_shape_function_3d_hex();
GaussIntegration::get_shape_func( shape_function[0], dndy1[0], dndy2[0], dndy3[0], weight );
VerdictVector xxi, xet, xze, xin;
double jacobian, minimum_jacobian;
double element_volume = 0.0;
minimum_jacobian = VERDICT_DBL_MAX;
// calculate element volume
int ife, ja;
for( ife = 0; ife < total_number_of_gauss_points; ife++ )
{
xxi.set( 0.0, 0.0, 0.0 );
xet.set( 0.0, 0.0, 0.0 );
xze.set( 0.0, 0.0, 0.0 );
for( ja = 0; ja < num_nodes; ja++ )
{
xin.set( coordinates[ja][0], coordinates[ja][1], coordinates[ja][2] );
xxi += dndy1[ife][ja] * xin;
xet += dndy2[ife][ja] * xin;
xze += dndy3[ife][ja] * xin;
}
jacobian = xxi % ( xet * xze );
if( minimum_jacobian > jacobian ) minimum_jacobian = jacobian;
element_volume += weight[ife] * jacobian;
}
// loop through all nodes
double dndy1_at_node[maxNumberNodes][maxNumberNodes];
double dndy2_at_node[maxNumberNodes][maxNumberNodes];
double dndy3_at_node[maxNumberNodes][maxNumberNodes];
GaussIntegration::calculate_derivative_at_nodes_3d( dndy1_at_node, dndy2_at_node, dndy3_at_node );
int node_id;
for( node_id = 0; node_id < num_nodes; node_id++ )
{
xxi.set( 0.0, 0.0, 0.0 );
xet.set( 0.0, 0.0, 0.0 );
xze.set( 0.0, 0.0, 0.0 );
for( ja = 0; ja < num_nodes; ja++ )
{
xin.set( coordinates[ja][0], coordinates[ja][1], coordinates[ja][2] );
xxi += dndy1_at_node[node_id][ja] * xin;
xet += dndy2_at_node[node_id][ja] * xin;
xze += dndy3_at_node[node_id][ja] * xin;
}
jacobian = xxi % ( xet * xze );
if( minimum_jacobian > jacobian ) minimum_jacobian = jacobian;
}
distortion = minimum_jacobian / element_volume * 8.;
return (double)distortion;
}
| C_FUNC_DEF double v_hex_edge_ratio | ( | int | , |
| double | coordinates[][3] | ||
| ) |
Calculates hex edge ratio metric.
the edge ratio of a hex
NB (P. Pebay 01/23/07): Hmax / Hmin where Hmax and Hmin are respectively the maximum and the minimum edge lengths
Definition at line 529 of file V_HexMetric.cpp.
References VerdictVector::length_squared(), make_hex_edges(), VERDICT_DBL_MAX, VERDICT_DBL_MIN, VERDICT_MAX, and VERDICT_MIN.
Referenced by moab::VerdictWrapper::quality_measure(), and v_hex_quality().
{
VerdictVector edges[12];
make_hex_edges( coordinates, edges );
double a2 = edges[0].length_squared();
double b2 = edges[1].length_squared();
double c2 = edges[2].length_squared();
double d2 = edges[3].length_squared();
double e2 = edges[4].length_squared();
double f2 = edges[5].length_squared();
double g2 = edges[6].length_squared();
double h2 = edges[7].length_squared();
double i2 = edges[8].length_squared();
double j2 = edges[9].length_squared();
double k2 = edges[10].length_squared();
double l2 = edges[11].length_squared();
double mab, mcd, mef, Mab, Mcd, Mef;
double mgh, mij, mkl, Mgh, Mij, Mkl;
if( a2 < b2 )
{
mab = a2;
Mab = b2;
}
else // b2 <= a2
{
mab = b2;
Mab = a2;
}
if( c2 < d2 )
{
mcd = c2;
Mcd = d2;
}
else // d2 <= c2
{
mcd = d2;
Mcd = c2;
}
if( e2 < f2 )
{
mef = e2;
Mef = f2;
}
else // f2 <= e2
{
mef = f2;
Mef = e2;
}
if( g2 < h2 )
{
mgh = g2;
Mgh = h2;
}
else // h2 <= g2
{
mgh = h2;
Mgh = g2;
}
if( i2 < j2 )
{
mij = i2;
Mij = j2;
}
else // j2 <= i2
{
mij = j2;
Mij = i2;
}
if( k2 < l2 )
{
mkl = k2;
Mkl = l2;
}
else // l2 <= k2
{
mkl = l2;
Mkl = k2;
}
double m2;
m2 = mab < mcd ? mab : mcd;
m2 = m2 < mef ? m2 : mef;
m2 = m2 < mgh ? m2 : mgh;
m2 = m2 < mij ? m2 : mij;
m2 = m2 < mkl ? m2 : mkl;
if( m2 < VERDICT_DBL_MIN ) return (double)VERDICT_DBL_MAX;
double M2;
M2 = Mab > Mcd ? Mab : Mcd;
M2 = M2 > Mef ? M2 : Mef;
M2 = M2 > Mgh ? M2 : Mgh;
M2 = M2 > Mij ? M2 : Mij;
M2 = M2 > Mkl ? M2 : Mkl;
m2 = m2 < mef ? m2 : mef;
M2 = Mab > Mcd ? Mab : Mcd;
M2 = M2 > Mef ? M2 : Mef;
double edge_ratio = sqrt( M2 / m2 );
if( edge_ratio > 0 ) return (double)VERDICT_MIN( edge_ratio, VERDICT_DBL_MAX );
return (double)VERDICT_MAX( edge_ratio, -VERDICT_DBL_MAX );
}
| int v_hex_get_weight | ( | VerdictVector & | v1, |
| VerdictVector & | v2, | ||
| VerdictVector & | v3 | ||
| ) |
weights based on the average size of a hex
Definition at line 39 of file V_HexMetric.cpp.
References VerdictVector::set(), and verdict_hex_size.
Referenced by v_hex_quality(), and v_hex_relative_size_squared().
{
if( verdict_hex_size == 0 ) return 0;
v1.set( 1, 0, 0 );
v2.set( 0, 1, 0 );
v3.set( 0, 0, 1 );
double scale = pow( verdict_hex_size / ( v1 % ( v2 * v3 ) ), 0.33333333333 );
v1 *= scale;
v2 *= scale;
v3 *= scale;
return 1;
}
| C_FUNC_DEF double v_hex_jacobian | ( | int | , |
| double | coordinates[][3] | ||
| ) |
Calculates hex jacobian metric.
jacobian of a hex
Minimum pointwise volume of local map at 8 corners & center of hex
Definition at line 1382 of file V_HexMetric.cpp.
References calc_hex_efg(), make_hex_nodes, VERDICT_DBL_MAX, VERDICT_MAX, and VERDICT_MIN.
Referenced by moab::VerdictWrapper::quality_measure().
{
VerdictVector node_pos[8];
make_hex_nodes( coordinates, node_pos );
double jacobian = VERDICT_DBL_MAX;
double current_jacobian;
VerdictVector xxi, xet, xze;
xxi = calc_hex_efg( 1, node_pos );
xet = calc_hex_efg( 2, node_pos );
xze = calc_hex_efg( 3, node_pos );
current_jacobian = xxi % ( xet * xze ) / 64.0;
if( current_jacobian < jacobian )
{
jacobian = current_jacobian;
}
// J(0,0,0):
xxi = node_pos[1] - node_pos[0];
xet = node_pos[3] - node_pos[0];
xze = node_pos[4] - node_pos[0];
current_jacobian = xxi % ( xet * xze );
if( current_jacobian < jacobian )
{
jacobian = current_jacobian;
}
// J(1,0,0):
xxi = node_pos[2] - node_pos[1];
xet = node_pos[0] - node_pos[1];
xze = node_pos[5] - node_pos[1];
current_jacobian = xxi % ( xet * xze );
if( current_jacobian < jacobian )
{
jacobian = current_jacobian;
}
// J(1,1,0):
xxi = node_pos[3] - node_pos[2];
xet = node_pos[1] - node_pos[2];
xze = node_pos[6] - node_pos[2];
current_jacobian = xxi % ( xet * xze );
if( current_jacobian < jacobian )
{
jacobian = current_jacobian;
}
// J(0,1,0):
xxi = node_pos[0] - node_pos[3];
xet = node_pos[2] - node_pos[3];
xze = node_pos[7] - node_pos[3];
current_jacobian = xxi % ( xet * xze );
if( current_jacobian < jacobian )
{
jacobian = current_jacobian;
}
// J(0,0,1):
xxi = node_pos[7] - node_pos[4];
xet = node_pos[5] - node_pos[4];
xze = node_pos[0] - node_pos[4];
current_jacobian = xxi % ( xet * xze );
if( current_jacobian < jacobian )
{
jacobian = current_jacobian;
}
// J(1,0,1):
xxi = node_pos[4] - node_pos[5];
xet = node_pos[6] - node_pos[5];
xze = node_pos[1] - node_pos[5];
current_jacobian = xxi % ( xet * xze );
if( current_jacobian < jacobian )
{
jacobian = current_jacobian;
}
// J(1,1,1):
xxi = node_pos[5] - node_pos[6];
xet = node_pos[7] - node_pos[6];
xze = node_pos[2] - node_pos[6];
current_jacobian = xxi % ( xet * xze );
if( current_jacobian < jacobian )
{
jacobian = current_jacobian;
}
// J(0,1,1):
xxi = node_pos[6] - node_pos[7];
xet = node_pos[4] - node_pos[7];
xze = node_pos[3] - node_pos[7];
current_jacobian = xxi % ( xet * xze );
if( current_jacobian < jacobian )
{
jacobian = current_jacobian;
}
if( jacobian > 0 ) return (double)VERDICT_MIN( jacobian, VERDICT_DBL_MAX );
return (double)VERDICT_MAX( jacobian, -VERDICT_DBL_MAX );
}
| C_FUNC_DEF double v_hex_max_aspect_frobenius | ( | int | , |
| double | coordinates[][3] | ||
| ) |
Calculates hex condition metric.
maximum Frobenius condition number of a hex
Maximum Frobenius condition number of the Jacobian matrix at 8 corners NB (P. Pebay 01/25/07): this metric is calculated by taking the maximum of the 8 Frobenius aspects at each corner of the hex, when the reference corner is right isosceles.
Definition at line 1243 of file V_HexMetric.cpp.
References calc_hex_efg(), condition_comp(), make_hex_nodes, VERDICT_DBL_MAX, VERDICT_MAX, and VERDICT_MIN.
Referenced by moab::VerdictWrapper::quality_measure(), and v_hex_condition().
{
VerdictVector node_pos[8];
make_hex_nodes( coordinates, node_pos );
double condition = 0.0, current_condition;
VerdictVector xxi, xet, xze;
xxi = calc_hex_efg( 1, node_pos );
xet = calc_hex_efg( 2, node_pos );
xze = calc_hex_efg( 3, node_pos );
current_condition = condition_comp( xxi, xet, xze );
if( current_condition > condition )
{
condition = current_condition;
}
// J(0,0,0):
xxi = node_pos[1] - node_pos[0];
xet = node_pos[3] - node_pos[0];
xze = node_pos[4] - node_pos[0];
current_condition = condition_comp( xxi, xet, xze );
if( current_condition > condition )
{
condition = current_condition;
}
// J(1,0,0):
xxi = node_pos[2] - node_pos[1];
xet = node_pos[0] - node_pos[1];
xze = node_pos[5] - node_pos[1];
current_condition = condition_comp( xxi, xet, xze );
if( current_condition > condition )
{
condition = current_condition;
}
// J(1,1,0):
xxi = node_pos[3] - node_pos[2];
xet = node_pos[1] - node_pos[2];
xze = node_pos[6] - node_pos[2];
current_condition = condition_comp( xxi, xet, xze );
if( current_condition > condition )
{
condition = current_condition;
}
// J(0,1,0):
xxi = node_pos[0] - node_pos[3];
xet = node_pos[2] - node_pos[3];
xze = node_pos[7] - node_pos[3];
current_condition = condition_comp( xxi, xet, xze );
if( current_condition > condition )
{
condition = current_condition;
}
// J(0,0,1):
xxi = node_pos[7] - node_pos[4];
xet = node_pos[5] - node_pos[4];
xze = node_pos[0] - node_pos[4];
current_condition = condition_comp( xxi, xet, xze );
if( current_condition > condition )
{
condition = current_condition;
}
// J(1,0,1):
xxi = node_pos[4] - node_pos[5];
xet = node_pos[6] - node_pos[5];
xze = node_pos[1] - node_pos[5];
current_condition = condition_comp( xxi, xet, xze );
if( current_condition > condition )
{
condition = current_condition;
}
// J(1,1,1):
xxi = node_pos[5] - node_pos[6];
xet = node_pos[7] - node_pos[6];
xze = node_pos[2] - node_pos[6];
current_condition = condition_comp( xxi, xet, xze );
if( current_condition > condition )
{
condition = current_condition;
}
// J(1,1,1):
xxi = node_pos[6] - node_pos[7];
xet = node_pos[4] - node_pos[7];
xze = node_pos[3] - node_pos[7];
current_condition = condition_comp( xxi, xet, xze );
if( current_condition > condition )
{
condition = current_condition;
}
condition /= 3.0;
if( condition > 0 ) return (double)VERDICT_MIN( condition, VERDICT_DBL_MAX );
return (double)VERDICT_MAX( condition, -VERDICT_DBL_MAX );
}
| C_FUNC_DEF double v_hex_max_edge_ratio | ( | int | , |
| double | coordinates[][3] | ||
| ) |
Calculates hex maximum of edge ratio.
max edge ratio of a hex
Maximum edge length ratio at hex center
Definition at line 643 of file V_HexMetric.cpp.
References calc_hex_efg(), VerdictVector::length(), make_hex_nodes, safe_ratio(), VERDICT_DBL_MAX, VERDICT_MAX, and VERDICT_MIN.
Referenced by moab::VerdictWrapper::quality_measure().
{
double aspect;
VerdictVector node_pos[8];
make_hex_nodes( coordinates, node_pos );
double aspect_12, aspect_13, aspect_23;
VerdictVector efg1 = calc_hex_efg( 1, node_pos );
VerdictVector efg2 = calc_hex_efg( 2, node_pos );
VerdictVector efg3 = calc_hex_efg( 3, node_pos );
double mag_efg1 = efg1.length();
double mag_efg2 = efg2.length();
double mag_efg3 = efg3.length();
aspect_12 = safe_ratio( VERDICT_MAX( mag_efg1, mag_efg2 ), VERDICT_MIN( mag_efg1, mag_efg2 ) );
aspect_13 = safe_ratio( VERDICT_MAX( mag_efg1, mag_efg3 ), VERDICT_MIN( mag_efg1, mag_efg3 ) );
aspect_23 = safe_ratio( VERDICT_MAX( mag_efg2, mag_efg3 ), VERDICT_MIN( mag_efg2, mag_efg3 ) );
aspect = VERDICT_MAX( aspect_12, VERDICT_MAX( aspect_13, aspect_23 ) );
if( aspect > 0 ) return (double)VERDICT_MIN( aspect, VERDICT_DBL_MAX );
return (double)VERDICT_MAX( aspect, -VERDICT_DBL_MAX );
}
| C_FUNC_DEF double v_hex_med_aspect_frobenius | ( | int | , |
| double | coordinates[][3] | ||
| ) |
Calculates hex condition metric.
the average Frobenius aspect of a hex
NB (P. Pebay 01/20/07): this metric is calculated by averaging the 8 Frobenius aspects at each corner of the hex, when the reference corner is right isosceles.
Definition at line 1164 of file V_HexMetric.cpp.
References condition_comp(), make_hex_nodes, VERDICT_DBL_MAX, VERDICT_MAX, and VERDICT_MIN.
Referenced by moab::VerdictWrapper::quality_measure(), and v_hex_quality().
{
VerdictVector node_pos[8];
make_hex_nodes( coordinates, node_pos );
double med_aspect_frobenius = 0.;
VerdictVector xxi, xet, xze;
// J(0,0,0):
xxi = node_pos[1] - node_pos[0];
xet = node_pos[3] - node_pos[0];
xze = node_pos[4] - node_pos[0];
med_aspect_frobenius += condition_comp( xxi, xet, xze );
// J(1,0,0):
xxi = node_pos[2] - node_pos[1];
xet = node_pos[0] - node_pos[1];
xze = node_pos[5] - node_pos[1];
med_aspect_frobenius += condition_comp( xxi, xet, xze );
// J(1,1,0):
xxi = node_pos[3] - node_pos[2];
xet = node_pos[1] - node_pos[2];
xze = node_pos[6] - node_pos[2];
med_aspect_frobenius += condition_comp( xxi, xet, xze );
// J(0,1,0):
xxi = node_pos[0] - node_pos[3];
xet = node_pos[2] - node_pos[3];
xze = node_pos[7] - node_pos[3];
med_aspect_frobenius += condition_comp( xxi, xet, xze );
// J(0,0,1):
xxi = node_pos[7] - node_pos[4];
xet = node_pos[5] - node_pos[4];
xze = node_pos[0] - node_pos[4];
med_aspect_frobenius += condition_comp( xxi, xet, xze );
// J(1,0,1):
xxi = node_pos[4] - node_pos[5];
xet = node_pos[6] - node_pos[5];
xze = node_pos[1] - node_pos[5];
med_aspect_frobenius += condition_comp( xxi, xet, xze );
// J(1,1,1):
xxi = node_pos[5] - node_pos[6];
xet = node_pos[7] - node_pos[6];
xze = node_pos[2] - node_pos[6];
med_aspect_frobenius += condition_comp( xxi, xet, xze );
// J(1,1,1):
xxi = node_pos[6] - node_pos[7];
xet = node_pos[4] - node_pos[7];
xze = node_pos[3] - node_pos[7];
med_aspect_frobenius += condition_comp( xxi, xet, xze );
med_aspect_frobenius /= 24.;
if( med_aspect_frobenius > 0 ) return (double)VERDICT_MIN( med_aspect_frobenius, VERDICT_DBL_MAX );
return (double)VERDICT_MAX( med_aspect_frobenius, -VERDICT_DBL_MAX );
}
| C_FUNC_DEF double v_hex_oddy | ( | int | , |
| double | coordinates[][3] | ||
| ) |
Calculates hex oddy metric.
oddy of a hex
General distortion measure based on left Cauchy-Green Tensor
Definition at line 1014 of file V_HexMetric.cpp.
References calc_hex_efg(), make_hex_nodes, oddy_comp(), VerdictVector::set(), VERDICT_DBL_MAX, VERDICT_MAX, and VERDICT_MIN.
Referenced by moab::VerdictWrapper::quality_measure().
{
double oddy = 0.0, current_oddy;
VerdictVector xxi, xet, xze;
VerdictVector node_pos[8];
make_hex_nodes( coordinates, node_pos );
xxi = calc_hex_efg( 1, node_pos );
xet = calc_hex_efg( 2, node_pos );
xze = calc_hex_efg( 3, node_pos );
current_oddy = oddy_comp( xxi, xet, xze );
if( current_oddy > oddy )
{
oddy = current_oddy;
}
xxi.set( coordinates[1][0] - coordinates[0][0], coordinates[1][1] - coordinates[0][1],
coordinates[1][2] - coordinates[0][2] );
xet.set( coordinates[3][0] - coordinates[0][0], coordinates[3][1] - coordinates[0][1],
coordinates[3][2] - coordinates[0][2] );
xze.set( coordinates[4][0] - coordinates[0][0], coordinates[4][1] - coordinates[0][1],
coordinates[4][2] - coordinates[0][2] );
current_oddy = oddy_comp( xxi, xet, xze );
if( current_oddy > oddy )
{
oddy = current_oddy;
}
xxi.set( coordinates[2][0] - coordinates[1][0], coordinates[2][1] - coordinates[1][1],
coordinates[2][2] - coordinates[1][2] );
xet.set( coordinates[0][0] - coordinates[1][0], coordinates[0][1] - coordinates[1][1],
coordinates[0][2] - coordinates[1][2] );
xze.set( coordinates[5][0] - coordinates[1][0], coordinates[5][1] - coordinates[1][1],
coordinates[5][2] - coordinates[1][2] );
current_oddy = oddy_comp( xxi, xet, xze );
if( current_oddy > oddy )
{
oddy = current_oddy;
}
xxi.set( coordinates[3][0] - coordinates[2][0], coordinates[3][1] - coordinates[2][1],
coordinates[3][2] - coordinates[2][2] );
xet.set( coordinates[1][0] - coordinates[2][0], coordinates[1][1] - coordinates[2][1],
coordinates[1][2] - coordinates[2][2] );
xze.set( coordinates[6][0] - coordinates[2][0], coordinates[6][1] - coordinates[2][1],
coordinates[6][2] - coordinates[2][2] );
current_oddy = oddy_comp( xxi, xet, xze );
if( current_oddy > oddy )
{
oddy = current_oddy;
}
xxi.set( coordinates[0][0] - coordinates[3][0], coordinates[0][1] - coordinates[3][1],
coordinates[0][2] - coordinates[3][2] );
xet.set( coordinates[2][0] - coordinates[3][0], coordinates[2][1] - coordinates[3][1],
coordinates[2][2] - coordinates[3][2] );
xze.set( coordinates[7][0] - coordinates[3][0], coordinates[7][1] - coordinates[3][1],
coordinates[7][2] - coordinates[3][2] );
current_oddy = oddy_comp( xxi, xet, xze );
if( current_oddy > oddy )
{
oddy = current_oddy;
}
xxi.set( coordinates[7][0] - coordinates[4][0], coordinates[7][1] - coordinates[4][1],
coordinates[7][2] - coordinates[4][2] );
xet.set( coordinates[5][0] - coordinates[4][0], coordinates[5][1] - coordinates[4][1],
coordinates[5][2] - coordinates[4][2] );
xze.set( coordinates[0][0] - coordinates[4][0], coordinates[0][1] - coordinates[4][1],
coordinates[0][2] - coordinates[4][2] );
current_oddy = oddy_comp( xxi, xet, xze );
if( current_oddy > oddy )
{
oddy = current_oddy;
}
xxi.set( coordinates[4][0] - coordinates[5][0], coordinates[4][1] - coordinates[5][1],
coordinates[4][2] - coordinates[5][2] );
xet.set( coordinates[6][0] - coordinates[5][0], coordinates[6][1] - coordinates[5][1],
coordinates[6][2] - coordinates[5][2] );
xze.set( coordinates[1][0] - coordinates[5][0], coordinates[1][1] - coordinates[5][1],
coordinates[1][2] - coordinates[5][2] );
current_oddy = oddy_comp( xxi, xet, xze );
if( current_oddy > oddy )
{
oddy = current_oddy;
}
xxi.set( coordinates[5][0] - coordinates[6][0], coordinates[5][1] - coordinates[6][1],
coordinates[5][2] - coordinates[6][2] );
xet.set( coordinates[7][0] - coordinates[6][0], coordinates[7][1] - coordinates[6][1],
coordinates[7][2] - coordinates[6][2] );
xze.set( coordinates[2][0] - coordinates[6][0], coordinates[2][1] - coordinates[6][1],
coordinates[2][2] - coordinates[6][2] );
current_oddy = oddy_comp( xxi, xet, xze );
if( current_oddy > oddy )
{
oddy = current_oddy;
}
xxi.set( coordinates[6][0] - coordinates[7][0], coordinates[6][1] - coordinates[7][1],
coordinates[6][2] - coordinates[7][2] );
xet.set( coordinates[4][0] - coordinates[7][0], coordinates[4][1] - coordinates[7][1],
coordinates[4][2] - coordinates[7][2] );
xze.set( coordinates[3][0] - coordinates[7][0], coordinates[3][1] - coordinates[7][1],
coordinates[3][2] - coordinates[7][2] );
current_oddy = oddy_comp( xxi, xet, xze );
if( current_oddy > oddy )
{
oddy = current_oddy;
}
if( oddy > 0 ) return (double)VERDICT_MIN( oddy, VERDICT_DBL_MAX );
return (double)VERDICT_MAX( oddy, -VERDICT_DBL_MAX );
}
| C_FUNC_DEF void v_hex_quality | ( | int | num_nodes, |
| double | coordinates[][3], | ||
| unsigned int | metrics_request_flag, | ||
| HexMetricVals * | metric_vals | ||
| ) |
Calculates quality metrics for hexahedral elements.
multiple quality metrics of a hex
Definition at line 2651 of file V_HexMetric.cpp.
References calc_hex_efg(), HexMetricVals::condition, condition_comp(), diag_length(), HexMetricVals::diagonal, HexMetricVals::dimension, HexMetricVals::distortion, HexMetricVals::edge_ratio, HexMetricVals::jacobian, VerdictVector::length(), length_squared(), VerdictVector::length_squared(), make_edge_length_squares, make_hex_edges(), make_hex_nodes, HexMetricVals::max_edge_ratio, HexMetricVals::med_aspect_frobenius, VerdictVector::normalize(), HexMetricVals::oddy, oddy_comp(), HexMetricVals::relative_size_squared, safe_ratio(), HexMetricVals::scaled_jacobian, HexMetricVals::shape, HexMetricVals::shape_and_size, HexMetricVals::shear, HexMetricVals::shear_and_size, HexMetricVals::skew, HexMetricVals::stretch, HexMetricVals::taper, V_HEX_CONDITION, V_HEX_DIAGONAL, v_hex_diagonal(), V_HEX_DIMENSION, v_hex_dimension(), V_HEX_DISTORTION, v_hex_distortion(), V_HEX_EDGE_RATIO, v_hex_edge_ratio(), v_hex_get_weight(), V_HEX_JACOBIAN, V_HEX_MAX_EDGE_RATIO, V_HEX_MED_ASPECT_FROBENIUS, v_hex_med_aspect_frobenius(), V_HEX_ODDY, V_HEX_RELATIVE_SIZE_SQUARED, V_HEX_SCALED_JACOBIAN, V_HEX_SHAPE, V_HEX_SHAPE_AND_SIZE, V_HEX_SHEAR, V_HEX_SHEAR_AND_SIZE, V_HEX_SKEW, V_HEX_STRETCH, V_HEX_TAPER, V_HEX_VOLUME, v_hex_volume(), VERDICT_DBL_MAX, VERDICT_DBL_MIN, VERDICT_FALSE, VERDICT_MAX, VERDICT_MIN, VERDICT_TRUE, and HexMetricVals::volume.
Referenced by moab::VerdictWrapper::all_quality_measures().
{
memset( metric_vals, 0, sizeof( HexMetricVals ) );
// max edge ratio, skew, taper, and volume
if( metrics_request_flag & ( V_HEX_MAX_EDGE_RATIO | V_HEX_SKEW | V_HEX_TAPER ) )
{
VerdictVector node_pos[8];
make_hex_nodes( coordinates, node_pos );
VerdictVector efg1, efg2, efg3;
efg1 = calc_hex_efg( 1, node_pos );
efg2 = calc_hex_efg( 2, node_pos );
efg3 = calc_hex_efg( 3, node_pos );
if( metrics_request_flag & V_HEX_MAX_EDGE_RATIO )
{
double max_edge_ratio_12, max_edge_ratio_13, max_edge_ratio_23;
double mag_efg1 = efg1.length();
double mag_efg2 = efg2.length();
double mag_efg3 = efg3.length();
max_edge_ratio_12 = safe_ratio( VERDICT_MAX( mag_efg1, mag_efg2 ), VERDICT_MIN( mag_efg1, mag_efg2 ) );
max_edge_ratio_13 = safe_ratio( VERDICT_MAX( mag_efg1, mag_efg3 ), VERDICT_MIN( mag_efg1, mag_efg3 ) );
max_edge_ratio_23 = safe_ratio( VERDICT_MAX( mag_efg2, mag_efg3 ), VERDICT_MIN( mag_efg2, mag_efg3 ) );
metric_vals->max_edge_ratio =
(double)VERDICT_MAX( max_edge_ratio_12, VERDICT_MAX( max_edge_ratio_13, max_edge_ratio_23 ) );
}
if( metrics_request_flag & V_HEX_SKEW )
{
VerdictVector vec1 = efg1;
VerdictVector vec2 = efg2;
VerdictVector vec3 = efg3;
if( vec1.normalize() <= VERDICT_DBL_MIN || vec2.normalize() <= VERDICT_DBL_MIN ||
vec3.normalize() <= VERDICT_DBL_MIN )
{
metric_vals->skew = (double)VERDICT_DBL_MAX;
}
else
{
double skewx = fabs( vec1 % vec2 );
double skewy = fabs( vec1 % vec3 );
double skewz = fabs( vec2 % vec3 );
metric_vals->skew = (double)( VERDICT_MAX( skewx, VERDICT_MAX( skewy, skewz ) ) );
}
}
if( metrics_request_flag & V_HEX_TAPER )
{
VerdictVector efg12 = calc_hex_efg( 12, node_pos );
VerdictVector efg13 = calc_hex_efg( 13, node_pos );
VerdictVector efg23 = calc_hex_efg( 23, node_pos );
double taperx = fabs( safe_ratio( efg12.length(), VERDICT_MIN( efg1.length(), efg2.length() ) ) );
double tapery = fabs( safe_ratio( efg13.length(), VERDICT_MIN( efg1.length(), efg3.length() ) ) );
double taperz = fabs( safe_ratio( efg23.length(), VERDICT_MIN( efg2.length(), efg3.length() ) ) );
metric_vals->taper = (double)VERDICT_MAX( taperx, VERDICT_MAX( tapery, taperz ) );
}
}
if( metrics_request_flag & V_HEX_VOLUME )
{
metric_vals->volume = v_hex_volume( 8, coordinates );
}
if( metrics_request_flag &
( V_HEX_JACOBIAN | V_HEX_SCALED_JACOBIAN | V_HEX_CONDITION | V_HEX_SHEAR | V_HEX_SHAPE |
V_HEX_RELATIVE_SIZE_SQUARED | V_HEX_SHAPE_AND_SIZE | V_HEX_SHEAR_AND_SIZE | V_HEX_STRETCH ) )
{
static const double two_thirds = 2.0 / 3.0;
VerdictVector edges[12];
// the length squares
double length_squared[12];
// make vectors from coordinates
make_hex_edges( coordinates, edges );
// calculate the length squares if we need to
if( metrics_request_flag &
( V_HEX_JACOBIAN | V_HEX_SHEAR | V_HEX_SCALED_JACOBIAN | V_HEX_SHAPE | V_HEX_SHAPE_AND_SIZE |
V_HEX_RELATIVE_SIZE_SQUARED | V_HEX_SHEAR_AND_SIZE | V_HEX_STRETCH ) )
make_edge_length_squares( edges, length_squared );
double jacobian = VERDICT_DBL_MAX, scaled_jacobian = VERDICT_DBL_MAX, condition = 0.0, shear = 1.0, shape = 1.0,
oddy = 0.0;
double current_jacobian, current_scaled_jacobian, current_condition, current_shape, detw = 0, det_sum = 0,
current_oddy;
VerdictBoolean rel_size_error = VERDICT_FALSE;
VerdictVector xxi, xet, xze;
// get weights if we need based on average size of a hex
if( metrics_request_flag & ( V_HEX_RELATIVE_SIZE_SQUARED | V_HEX_SHAPE_AND_SIZE | V_HEX_SHEAR_AND_SIZE ) )
{
v_hex_get_weight( xxi, xet, xze );
detw = xxi % ( xet * xze );
if( detw < VERDICT_DBL_MIN ) rel_size_error = VERDICT_TRUE;
}
xxi = edges[0] - edges[2] + edges[4] - edges[6];
xet = edges[1] - edges[3] + edges[5] - edges[7];
xze = edges[8] + edges[9] + edges[10] + edges[11];
current_jacobian = xxi % ( xet * xze ) / 64.0;
if( current_jacobian < jacobian ) jacobian = current_jacobian;
if( metrics_request_flag & ( V_HEX_SCALED_JACOBIAN | V_HEX_SHEAR | V_HEX_SHEAR_AND_SIZE ) )
{
current_jacobian *= 64.0;
current_scaled_jacobian =
current_jacobian / sqrt( xxi.length_squared() * xet.length_squared() * xze.length_squared() );
if( current_scaled_jacobian < scaled_jacobian ) shear = scaled_jacobian = current_scaled_jacobian;
}
if( metrics_request_flag & V_HEX_CONDITION )
{
current_condition = condition_comp( xxi, xet, xze );
if( current_condition > condition )
{
condition = current_condition;
}
}
if( metrics_request_flag & V_HEX_ODDY )
{
current_oddy = oddy_comp( xxi, xet, xze );
if( current_oddy > oddy )
{
oddy = current_oddy;
}
}
// J(0,0,0)
current_jacobian = edges[0] % ( -edges[3] * edges[8] );
if( current_jacobian < jacobian ) jacobian = current_jacobian;
if( metrics_request_flag & ( V_HEX_RELATIVE_SIZE_SQUARED | V_HEX_SHAPE_AND_SIZE | V_HEX_SHEAR_AND_SIZE ) )
{
det_sum += current_jacobian;
}
if( metrics_request_flag & ( V_HEX_SCALED_JACOBIAN | V_HEX_SHEAR | V_HEX_SHEAR_AND_SIZE ) )
{
if( length_squared[0] <= VERDICT_DBL_MIN || length_squared[3] <= VERDICT_DBL_MIN ||
length_squared[8] <= VERDICT_DBL_MIN )
{
current_scaled_jacobian = VERDICT_DBL_MAX;
}
else
{
current_scaled_jacobian =
current_jacobian / sqrt( length_squared[0] * length_squared[3] * length_squared[8] );
}
if( current_scaled_jacobian < scaled_jacobian ) shear = scaled_jacobian = current_scaled_jacobian;
}
if( metrics_request_flag & V_HEX_CONDITION )
{
current_condition = condition_comp( edges[0], -edges[3], edges[8] );
if( current_condition > condition )
{
condition = current_condition;
}
}
if( metrics_request_flag & V_HEX_ODDY )
{
current_oddy = oddy_comp( edges[0], -edges[3], edges[8] );
if( current_oddy > oddy )
{
oddy = current_oddy;
}
}
if( metrics_request_flag & ( V_HEX_SHAPE | V_HEX_SHAPE_AND_SIZE ) )
{
if( current_jacobian > VERDICT_DBL_MIN )
current_shape = 3 * pow( current_jacobian, two_thirds ) /
( length_squared[0] + length_squared[3] + length_squared[8] );
else
current_shape = 0;
if( current_shape < shape )
{
shape = current_shape;
}
}
// J(1,0,0)
current_jacobian = edges[1] % ( -edges[0] * edges[9] );
if( current_jacobian < jacobian ) jacobian = current_jacobian;
if( metrics_request_flag & ( V_HEX_RELATIVE_SIZE_SQUARED | V_HEX_SHAPE_AND_SIZE | V_HEX_SHEAR_AND_SIZE ) )
{
det_sum += current_jacobian;
}
if( metrics_request_flag & ( V_HEX_SCALED_JACOBIAN | V_HEX_SHEAR | V_HEX_SHEAR_AND_SIZE ) )
{
if( length_squared[1] <= VERDICT_DBL_MIN || length_squared[0] <= VERDICT_DBL_MIN ||
length_squared[9] <= VERDICT_DBL_MIN )
{
current_scaled_jacobian = VERDICT_DBL_MAX;
}
else
{
current_scaled_jacobian =
current_jacobian / sqrt( length_squared[1] * length_squared[0] * length_squared[9] );
}
if( current_scaled_jacobian < scaled_jacobian ) shear = scaled_jacobian = current_scaled_jacobian;
}
if( metrics_request_flag & V_HEX_CONDITION )
{
current_condition = condition_comp( edges[1], -edges[0], edges[9] );
if( current_condition > condition )
{
condition = current_condition;
}
}
if( metrics_request_flag & V_HEX_ODDY )
{
current_oddy = oddy_comp( edges[1], -edges[0], edges[9] );
if( current_oddy > oddy )
{
oddy = current_oddy;
}
}
if( metrics_request_flag & ( V_HEX_SHAPE | V_HEX_SHAPE_AND_SIZE ) )
{
if( current_jacobian > VERDICT_DBL_MIN )
current_shape = 3 * pow( current_jacobian, two_thirds ) /
( length_squared[1] + length_squared[0] + length_squared[9] );
else
current_shape = 0;
if( current_shape < shape )
{
shape = current_shape;
}
}
// J(1,1,0)
current_jacobian = edges[2] % ( -edges[1] * edges[10] );
if( current_jacobian < jacobian ) jacobian = current_jacobian;
if( metrics_request_flag & ( V_HEX_RELATIVE_SIZE_SQUARED | V_HEX_SHAPE_AND_SIZE | V_HEX_SHEAR_AND_SIZE ) )
{
det_sum += current_jacobian;
}
if( metrics_request_flag & ( V_HEX_SCALED_JACOBIAN | V_HEX_SHEAR | V_HEX_SHEAR_AND_SIZE ) )
{
if( length_squared[2] <= VERDICT_DBL_MIN || length_squared[1] <= VERDICT_DBL_MIN ||
length_squared[10] <= VERDICT_DBL_MIN )
{
current_scaled_jacobian = VERDICT_DBL_MAX;
}
else
{
current_scaled_jacobian =
current_jacobian / sqrt( length_squared[2] * length_squared[1] * length_squared[10] );
}
if( current_scaled_jacobian < scaled_jacobian ) shear = scaled_jacobian = current_scaled_jacobian;
}
if( metrics_request_flag & V_HEX_CONDITION )
{
current_condition = condition_comp( edges[2], -edges[1], edges[10] );
if( current_condition > condition )
{
condition = current_condition;
}
}
if( metrics_request_flag & V_HEX_ODDY )
{
current_oddy = oddy_comp( edges[2], -edges[1], edges[10] );
if( current_oddy > oddy )
{
oddy = current_oddy;
}
}
if( metrics_request_flag & ( V_HEX_SHAPE | V_HEX_SHAPE_AND_SIZE ) )
{
if( current_jacobian > VERDICT_DBL_MIN )
current_shape = 3 * pow( current_jacobian, two_thirds ) /
( length_squared[2] + length_squared[1] + length_squared[10] );
else
current_shape = 0;
if( current_shape < shape )
{
shape = current_shape;
}
}
// J(0,1,0)
current_jacobian = edges[3] % ( -edges[2] * edges[11] );
if( current_jacobian < jacobian ) jacobian = current_jacobian;
if( metrics_request_flag & ( V_HEX_RELATIVE_SIZE_SQUARED | V_HEX_SHAPE_AND_SIZE | V_HEX_SHEAR_AND_SIZE ) )
{
det_sum += current_jacobian;
}
if( metrics_request_flag & ( V_HEX_SCALED_JACOBIAN | V_HEX_SHEAR | V_HEX_SHEAR_AND_SIZE ) )
{
if( length_squared[3] <= VERDICT_DBL_MIN || length_squared[2] <= VERDICT_DBL_MIN ||
length_squared[11] <= VERDICT_DBL_MIN )
{
current_scaled_jacobian = VERDICT_DBL_MAX;
}
else
{
current_scaled_jacobian =
current_jacobian / sqrt( length_squared[3] * length_squared[2] * length_squared[11] );
}
if( current_scaled_jacobian < scaled_jacobian ) shear = scaled_jacobian = current_scaled_jacobian;
}
if( metrics_request_flag & V_HEX_CONDITION )
{
current_condition = condition_comp( edges[3], -edges[2], edges[11] );
if( current_condition > condition )
{
condition = current_condition;
}
}
if( metrics_request_flag & V_HEX_ODDY )
{
current_oddy = oddy_comp( edges[3], -edges[2], edges[11] );
if( current_oddy > oddy )
{
oddy = current_oddy;
}
}
if( metrics_request_flag & ( V_HEX_SHAPE | V_HEX_SHAPE_AND_SIZE ) )
{
if( current_jacobian > VERDICT_DBL_MIN )
current_shape = 3 * pow( current_jacobian, two_thirds ) /
( length_squared[3] + length_squared[2] + length_squared[11] );
else
current_shape = 0;
if( current_shape < shape )
{
shape = current_shape;
}
}
// J(0,0,1)
current_jacobian = edges[4] % ( -edges[8] * -edges[7] );
if( current_jacobian < jacobian ) jacobian = current_jacobian;
if( metrics_request_flag & ( V_HEX_RELATIVE_SIZE_SQUARED | V_HEX_SHAPE_AND_SIZE | V_HEX_SHEAR_AND_SIZE ) )
{
det_sum += current_jacobian;
}
if( metrics_request_flag & ( V_HEX_SCALED_JACOBIAN | V_HEX_SHEAR | V_HEX_SHEAR_AND_SIZE ) )
{
if( length_squared[4] <= VERDICT_DBL_MIN || length_squared[8] <= VERDICT_DBL_MIN ||
length_squared[7] <= VERDICT_DBL_MIN )
{
current_scaled_jacobian = VERDICT_DBL_MAX;
}
else
{
current_scaled_jacobian =
current_jacobian / sqrt( length_squared[4] * length_squared[8] * length_squared[7] );
}
if( current_scaled_jacobian < scaled_jacobian ) shear = scaled_jacobian = current_scaled_jacobian;
}
if( metrics_request_flag & V_HEX_CONDITION )
{
current_condition = condition_comp( edges[4], -edges[8], -edges[7] );
if( current_condition > condition )
{
condition = current_condition;
}
}
if( metrics_request_flag & V_HEX_ODDY )
{
current_oddy = oddy_comp( edges[4], -edges[8], -edges[7] );
if( current_oddy > oddy )
{
oddy = current_oddy;
}
}
if( metrics_request_flag & ( V_HEX_SHAPE | V_HEX_SHAPE_AND_SIZE ) )
{
if( current_jacobian > VERDICT_DBL_MIN )
current_shape = 3 * pow( current_jacobian, two_thirds ) /
( length_squared[4] + length_squared[8] + length_squared[7] );
else
current_shape = 0;
if( current_shape < shape )
{
shape = current_shape;
}
}
// J(1,0,1)
current_jacobian = -edges[4] % ( edges[5] * -edges[9] );
if( current_jacobian < jacobian ) jacobian = current_jacobian;
if( metrics_request_flag & ( V_HEX_RELATIVE_SIZE_SQUARED | V_HEX_SHAPE_AND_SIZE | V_HEX_SHEAR_AND_SIZE ) )
{
det_sum += current_jacobian;
}
if( metrics_request_flag & ( V_HEX_SCALED_JACOBIAN | V_HEX_SHEAR | V_HEX_SHEAR_AND_SIZE ) )
{
if( length_squared[4] <= VERDICT_DBL_MIN || length_squared[5] <= VERDICT_DBL_MIN ||
length_squared[9] <= VERDICT_DBL_MIN )
{
current_scaled_jacobian = VERDICT_DBL_MAX;
}
else
{
current_scaled_jacobian =
current_jacobian / sqrt( length_squared[4] * length_squared[5] * length_squared[9] );
}
if( current_scaled_jacobian < scaled_jacobian ) shear = scaled_jacobian = current_scaled_jacobian;
}
if( metrics_request_flag & V_HEX_CONDITION )
{
current_condition = condition_comp( -edges[4], edges[5], -edges[9] );
if( current_condition > condition )
{
condition = current_condition;
}
}
if( metrics_request_flag & V_HEX_ODDY )
{
current_oddy = oddy_comp( -edges[4], edges[5], -edges[9] );
if( current_oddy > oddy )
{
oddy = current_oddy;
}
}
if( metrics_request_flag & ( V_HEX_SHAPE | V_HEX_SHAPE_AND_SIZE ) )
{
if( current_jacobian > VERDICT_DBL_MIN )
current_shape = 3 * pow( current_jacobian, two_thirds ) /
( length_squared[4] + length_squared[5] + length_squared[9] );
else
current_shape = 0;
if( current_shape < shape )
{
shape = current_shape;
}
}
// J(1,1,1)
current_jacobian = -edges[5] % ( edges[6] * -edges[10] );
if( current_jacobian < jacobian ) jacobian = current_jacobian;
if( metrics_request_flag & ( V_HEX_RELATIVE_SIZE_SQUARED | V_HEX_SHAPE_AND_SIZE | V_HEX_SHEAR_AND_SIZE ) )
{
det_sum += current_jacobian;
}
if( metrics_request_flag & ( V_HEX_SCALED_JACOBIAN | V_HEX_SHEAR | V_HEX_SHEAR_AND_SIZE ) )
{
if( length_squared[5] <= VERDICT_DBL_MIN || length_squared[6] <= VERDICT_DBL_MIN ||
length_squared[10] <= VERDICT_DBL_MIN )
{
current_scaled_jacobian = VERDICT_DBL_MAX;
}
else
{
current_scaled_jacobian =
current_jacobian / sqrt( length_squared[5] * length_squared[6] * length_squared[10] );
}
if( current_scaled_jacobian < scaled_jacobian ) shear = scaled_jacobian = current_scaled_jacobian;
}
if( metrics_request_flag & V_HEX_CONDITION )
{
current_condition = condition_comp( -edges[5], edges[6], -edges[10] );
if( current_condition > condition )
{
condition = current_condition;
}
}
if( metrics_request_flag & V_HEX_ODDY )
{
current_oddy = oddy_comp( -edges[5], edges[6], -edges[10] );
if( current_oddy > oddy )
{
oddy = current_oddy;
}
}
if( metrics_request_flag & ( V_HEX_SHAPE | V_HEX_SHAPE_AND_SIZE ) )
{
if( current_jacobian > VERDICT_DBL_MIN )
current_shape = 3 * pow( current_jacobian, two_thirds ) /
( length_squared[5] + length_squared[6] + length_squared[10] );
else
current_shape = 0;
if( current_shape < shape )
{
shape = current_shape;
}
}
// J(0,1,1)
current_jacobian = -edges[6] % ( edges[7] * -edges[11] );
if( current_jacobian < jacobian ) jacobian = current_jacobian;
if( metrics_request_flag & ( V_HEX_RELATIVE_SIZE_SQUARED | V_HEX_SHAPE_AND_SIZE | V_HEX_SHEAR_AND_SIZE ) )
{
det_sum += current_jacobian;
}
if( metrics_request_flag & ( V_HEX_SCALED_JACOBIAN | V_HEX_SHEAR | V_HEX_SHEAR_AND_SIZE ) )
{
if( length_squared[6] <= VERDICT_DBL_MIN || length_squared[7] <= VERDICT_DBL_MIN ||
length_squared[11] <= VERDICT_DBL_MIN )
{
current_scaled_jacobian = VERDICT_DBL_MAX;
}
else
{
current_scaled_jacobian =
current_jacobian / sqrt( length_squared[6] * length_squared[7] * length_squared[11] );
}
if( current_scaled_jacobian < scaled_jacobian ) shear = scaled_jacobian = current_scaled_jacobian;
}
if( metrics_request_flag & V_HEX_CONDITION )
{
current_condition = condition_comp( -edges[6], edges[7], -edges[11] );
if( current_condition > condition )
{
condition = current_condition;
}
}
if( metrics_request_flag & V_HEX_ODDY )
{
current_oddy = oddy_comp( -edges[6], edges[7], -edges[11] );
if( current_oddy > oddy )
{
oddy = current_oddy;
}
}
if( metrics_request_flag & ( V_HEX_SHAPE | V_HEX_SHAPE_AND_SIZE ) )
{
if( current_jacobian > VERDICT_DBL_MIN )
current_shape = 3 * pow( current_jacobian, two_thirds ) /
( length_squared[6] + length_squared[7] + length_squared[11] );
else
current_shape = 0;
if( current_shape < shape )
{
shape = current_shape;
}
}
if( metrics_request_flag & ( V_HEX_RELATIVE_SIZE_SQUARED | V_HEX_SHAPE_AND_SIZE | V_HEX_SHEAR_AND_SIZE ) )
{
if( det_sum > VERDICT_DBL_MIN && rel_size_error != VERDICT_TRUE )
{
double tau = det_sum / ( 8 * detw );
metric_vals->relative_size_squared = (double)VERDICT_MIN( tau * tau, 1.0 / tau / tau );
}
else
metric_vals->relative_size_squared = 0.0;
}
// set values from above calculations
if( metrics_request_flag & V_HEX_JACOBIAN ) metric_vals->jacobian = (double)jacobian;
if( metrics_request_flag & V_HEX_SCALED_JACOBIAN ) metric_vals->scaled_jacobian = (double)scaled_jacobian;
if( metrics_request_flag & V_HEX_CONDITION ) metric_vals->condition = (double)( condition / 3.0 );
if( metrics_request_flag & V_HEX_SHEAR )
{
if( shear < VERDICT_DBL_MIN ) // shear has range 0 to +1
shear = 0;
metric_vals->shear = (double)shear;
}
if( metrics_request_flag & V_HEX_SHAPE ) metric_vals->shape = (double)shape;
if( metrics_request_flag & V_HEX_SHAPE_AND_SIZE )
metric_vals->shape_and_size = (double)( shape * metric_vals->relative_size_squared );
if( metrics_request_flag & V_HEX_SHEAR_AND_SIZE )
metric_vals->shear_and_size = (double)( shear * metric_vals->relative_size_squared );
if( metrics_request_flag & V_HEX_ODDY ) metric_vals->oddy = (double)oddy;
if( metrics_request_flag & V_HEX_STRETCH )
{
static const double HEX_STRETCH_SCALE_FACTOR = sqrt( 3.0 );
double min_edge = length_squared[0];
for( int j = 1; j < 12; j++ )
min_edge = VERDICT_MIN( min_edge, length_squared[j] );
double max_diag = diag_length( 1, coordinates );
metric_vals->stretch = (double)( HEX_STRETCH_SCALE_FACTOR * ( safe_ratio( sqrt( min_edge ), max_diag ) ) );
}
}
if( metrics_request_flag & V_HEX_DIAGONAL ) metric_vals->diagonal = v_hex_diagonal( num_nodes, coordinates );
if( metrics_request_flag & V_HEX_DIMENSION ) metric_vals->dimension = v_hex_dimension( num_nodes, coordinates );
if( metrics_request_flag & V_HEX_DISTORTION ) metric_vals->distortion = v_hex_distortion( num_nodes, coordinates );
// take care of any overflow problems
// max_edge_ratio
if( metric_vals->max_edge_ratio > 0 )
metric_vals->max_edge_ratio = (double)VERDICT_MIN( metric_vals->max_edge_ratio, VERDICT_DBL_MAX );
else
metric_vals->max_edge_ratio = (double)VERDICT_MAX( metric_vals->max_edge_ratio, -VERDICT_DBL_MAX );
// skew
if( metric_vals->skew > 0 )
metric_vals->skew = (double)VERDICT_MIN( metric_vals->skew, VERDICT_DBL_MAX );
else
metric_vals->skew = (double)VERDICT_MAX( metric_vals->skew, -VERDICT_DBL_MAX );
// taper
if( metric_vals->taper > 0 )
metric_vals->taper = (double)VERDICT_MIN( metric_vals->taper, VERDICT_DBL_MAX );
else
metric_vals->taper = (double)VERDICT_MAX( metric_vals->taper, -VERDICT_DBL_MAX );
// volume
if( metric_vals->volume > 0 )
metric_vals->volume = (double)VERDICT_MIN( metric_vals->volume, VERDICT_DBL_MAX );
else
metric_vals->volume = (double)VERDICT_MAX( metric_vals->volume, -VERDICT_DBL_MAX );
// stretch
if( metric_vals->stretch > 0 )
metric_vals->stretch = (double)VERDICT_MIN( metric_vals->stretch, VERDICT_DBL_MAX );
else
metric_vals->stretch = (double)VERDICT_MAX( metric_vals->stretch, -VERDICT_DBL_MAX );
// diagonal
if( metric_vals->diagonal > 0 )
metric_vals->diagonal = (double)VERDICT_MIN( metric_vals->diagonal, VERDICT_DBL_MAX );
else
metric_vals->diagonal = (double)VERDICT_MAX( metric_vals->diagonal, -VERDICT_DBL_MAX );
// dimension
if( metric_vals->dimension > 0 )
metric_vals->dimension = (double)VERDICT_MIN( metric_vals->dimension, VERDICT_DBL_MAX );
else
metric_vals->dimension = (double)VERDICT_MAX( metric_vals->dimension, -VERDICT_DBL_MAX );
// oddy
if( metric_vals->oddy > 0 )
metric_vals->oddy = (double)VERDICT_MIN( metric_vals->oddy, VERDICT_DBL_MAX );
else
metric_vals->oddy = (double)VERDICT_MAX( metric_vals->oddy, -VERDICT_DBL_MAX );
// condition
if( metric_vals->condition > 0 )
metric_vals->condition = (double)VERDICT_MIN( metric_vals->condition, VERDICT_DBL_MAX );
else
metric_vals->condition = (double)VERDICT_MAX( metric_vals->condition, -VERDICT_DBL_MAX );
// jacobian
if( metric_vals->jacobian > 0 )
metric_vals->jacobian = (double)VERDICT_MIN( metric_vals->jacobian, VERDICT_DBL_MAX );
else
metric_vals->jacobian = (double)VERDICT_MAX( metric_vals->jacobian, -VERDICT_DBL_MAX );
// scaled_jacobian
if( metric_vals->scaled_jacobian > 0 )
metric_vals->scaled_jacobian = (double)VERDICT_MIN( metric_vals->scaled_jacobian, VERDICT_DBL_MAX );
else
metric_vals->scaled_jacobian = (double)VERDICT_MAX( metric_vals->scaled_jacobian, -VERDICT_DBL_MAX );
// shear
if( metric_vals->shear > 0 )
metric_vals->shear = (double)VERDICT_MIN( metric_vals->shear, VERDICT_DBL_MAX );
else
metric_vals->shear = (double)VERDICT_MAX( metric_vals->shear, -VERDICT_DBL_MAX );
// shape
if( metric_vals->shape > 0 )
metric_vals->shape = (double)VERDICT_MIN( metric_vals->shape, VERDICT_DBL_MAX );
else
metric_vals->shape = (double)VERDICT_MAX( metric_vals->shape, -VERDICT_DBL_MAX );
// relative_size_squared
if( metric_vals->relative_size_squared > 0 )
metric_vals->relative_size_squared = (double)VERDICT_MIN( metric_vals->relative_size_squared, VERDICT_DBL_MAX );
else
metric_vals->relative_size_squared =
(double)VERDICT_MAX( metric_vals->relative_size_squared, -VERDICT_DBL_MAX );
// shape_and_size
if( metric_vals->shape_and_size > 0 )
metric_vals->shape_and_size = (double)VERDICT_MIN( metric_vals->shape_and_size, VERDICT_DBL_MAX );
else
metric_vals->shape_and_size = (double)VERDICT_MAX( metric_vals->shape_and_size, -VERDICT_DBL_MAX );
// shear_and_size
if( metric_vals->shear_and_size > 0 )
metric_vals->shear_and_size = (double)VERDICT_MIN( metric_vals->shear_and_size, VERDICT_DBL_MAX );
else
metric_vals->shear_and_size = (double)VERDICT_MAX( metric_vals->shear_and_size, -VERDICT_DBL_MAX );
// distortion
if( metric_vals->distortion > 0 )
metric_vals->distortion = (double)VERDICT_MIN( metric_vals->distortion, VERDICT_DBL_MAX );
else
metric_vals->distortion = (double)VERDICT_MAX( metric_vals->distortion, -VERDICT_DBL_MAX );
if( metrics_request_flag & V_HEX_MED_ASPECT_FROBENIUS )
metric_vals->med_aspect_frobenius = v_hex_med_aspect_frobenius( 8, coordinates );
if( metrics_request_flag & V_HEX_EDGE_RATIO ) metric_vals->edge_ratio = v_hex_edge_ratio( 8, coordinates );
}
| C_FUNC_DEF double v_hex_relative_size_squared | ( | int | , |
| double | coordinates[][3] | ||
| ) |
Calculates hex relative size metric.
relative size of a hex
Min( J, 1/J ), where J is determinant of weighted Jacobian matrix
Definition at line 2090 of file V_HexMetric.cpp.
References make_hex_nodes, size, v_hex_get_weight(), VERDICT_DBL_MAX, VERDICT_DBL_MIN, VERDICT_MAX, and VERDICT_MIN.
Referenced by moab::VerdictWrapper::quality_measure(), v_hex_shape_and_size(), and v_hex_shear_and_size().
{
double size = 0;
double tau;
VerdictVector xxi, xet, xze;
double det, det_sum = 0;
v_hex_get_weight( xxi, xet, xze );
// This is the average relative size
double detw = xxi % ( xet * xze );
if( detw < VERDICT_DBL_MIN ) return 0;
VerdictVector node_pos[8];
make_hex_nodes( coordinates, node_pos );
// J(0,0,0):
xxi = node_pos[1] - node_pos[0];
xet = node_pos[3] - node_pos[0];
xze = node_pos[4] - node_pos[0];
det = xxi % ( xet * xze );
det_sum += det;
// J(1,0,0):
xxi = node_pos[2] - node_pos[1];
xet = node_pos[0] - node_pos[1];
xze = node_pos[5] - node_pos[1];
det = xxi % ( xet * xze );
det_sum += det;
// J(0,1,0):
xxi = node_pos[3] - node_pos[2];
xet = node_pos[1] - node_pos[2];
xze = node_pos[6] - node_pos[2];
det = xxi % ( xet * xze );
det_sum += det;
// J(1,1,0):
xxi = node_pos[0] - node_pos[3];
xet = node_pos[2] - node_pos[3];
xze = node_pos[7] - node_pos[3];
det = xxi % ( xet * xze );
det_sum += det;
// J(0,1,0):
xxi = node_pos[7] - node_pos[4];
xet = node_pos[5] - node_pos[4];
xze = node_pos[0] - node_pos[4];
det = xxi % ( xet * xze );
det_sum += det;
// J(1,0,1):
xxi = node_pos[4] - node_pos[5];
xet = node_pos[6] - node_pos[5];
xze = node_pos[1] - node_pos[5];
det = xxi % ( xet * xze );
det_sum += det;
// J(1,1,1):
xxi = node_pos[5] - node_pos[6];
xet = node_pos[7] - node_pos[6];
xze = node_pos[2] - node_pos[6];
det = xxi % ( xet * xze );
det_sum += det;
// J(1,1,1):
xxi = node_pos[6] - node_pos[7];
xet = node_pos[4] - node_pos[7];
xze = node_pos[3] - node_pos[7];
det = xxi % ( xet * xze );
det_sum += det;
if( det_sum > VERDICT_DBL_MIN )
{
tau = det_sum / ( 8 * detw );
tau = VERDICT_MIN( tau, 1.0 / tau );
size = tau * tau;
}
if( size > 0 ) return (double)VERDICT_MIN( size, VERDICT_DBL_MAX );
return (double)VERDICT_MAX( size, -VERDICT_DBL_MAX );
}
| C_FUNC_DEF double v_hex_scaled_jacobian | ( | int | , |
| double | coordinates[][3] | ||
| ) |
Calculates hex scaled jacobian metric.
scaled jacobian of a hex
Minimum Jacobian divided by the lengths of the 3 edge vectors
Definition at line 1507 of file V_HexMetric.cpp.
References calc_hex_efg(), VerdictVector::length_squared(), make_hex_nodes, VERDICT_DBL_MAX, VERDICT_DBL_MIN, VERDICT_MAX, and VERDICT_MIN.
Referenced by moab::VerdictWrapper::quality_measure().
{
double jacobi, min_norm_jac = VERDICT_DBL_MAX;
// double min_jacobi = VERDICT_DBL_MAX;
double temp_norm_jac, lengths;
double len1_sq, len2_sq, len3_sq;
VerdictVector xxi, xet, xze;
VerdictVector node_pos[8];
make_hex_nodes( coordinates, node_pos );
xxi = calc_hex_efg( 1, node_pos );
xet = calc_hex_efg( 2, node_pos );
xze = calc_hex_efg( 3, node_pos );
jacobi = xxi % ( xet * xze );
// if( jacobi < min_jacobi) { min_jacobi = jacobi; }
len1_sq = xxi.length_squared();
len2_sq = xet.length_squared();
len3_sq = xze.length_squared();
if( len1_sq <= VERDICT_DBL_MIN || len2_sq <= VERDICT_DBL_MIN || len3_sq <= VERDICT_DBL_MIN )
return (double)VERDICT_DBL_MAX;
lengths = sqrt( len1_sq * len2_sq * len3_sq );
temp_norm_jac = jacobi / lengths;
if( temp_norm_jac < min_norm_jac )
min_norm_jac = temp_norm_jac;
else
temp_norm_jac = jacobi;
// J(0,0,0):
xxi = node_pos[1] - node_pos[0];
xet = node_pos[3] - node_pos[0];
xze = node_pos[4] - node_pos[0];
jacobi = xxi % ( xet * xze );
// if( jacobi < min_jacobi ) { min_jacobi = jacobi; }
len1_sq = xxi.length_squared();
len2_sq = xet.length_squared();
len3_sq = xze.length_squared();
if( len1_sq <= VERDICT_DBL_MIN || len2_sq <= VERDICT_DBL_MIN || len3_sq <= VERDICT_DBL_MIN )
return (double)VERDICT_DBL_MAX;
lengths = sqrt( len1_sq * len2_sq * len3_sq );
temp_norm_jac = jacobi / lengths;
if( temp_norm_jac < min_norm_jac )
min_norm_jac = temp_norm_jac;
else
temp_norm_jac = jacobi;
// J(1,0,0):
xxi = node_pos[2] - node_pos[1];
xet = node_pos[0] - node_pos[1];
xze = node_pos[5] - node_pos[1];
jacobi = xxi % ( xet * xze );
// if( jacobi < min_jacobi ) { min_jacobi = jacobi; }
len1_sq = xxi.length_squared();
len2_sq = xet.length_squared();
len3_sq = xze.length_squared();
if( len1_sq <= VERDICT_DBL_MIN || len2_sq <= VERDICT_DBL_MIN || len3_sq <= VERDICT_DBL_MIN )
return (double)VERDICT_DBL_MAX;
lengths = sqrt( len1_sq * len2_sq * len3_sq );
temp_norm_jac = jacobi / lengths;
if( temp_norm_jac < min_norm_jac )
min_norm_jac = temp_norm_jac;
else
temp_norm_jac = jacobi;
// J(1,1,0):
xxi = node_pos[3] - node_pos[2];
xet = node_pos[1] - node_pos[2];
xze = node_pos[6] - node_pos[2];
jacobi = xxi % ( xet * xze );
// if( jacobi < min_jacobi ) { min_jacobi = jacobi; }
len1_sq = xxi.length_squared();
len2_sq = xet.length_squared();
len3_sq = xze.length_squared();
if( len1_sq <= VERDICT_DBL_MIN || len2_sq <= VERDICT_DBL_MIN || len3_sq <= VERDICT_DBL_MIN )
return (double)VERDICT_DBL_MAX;
lengths = sqrt( len1_sq * len2_sq * len3_sq );
temp_norm_jac = jacobi / lengths;
if( temp_norm_jac < min_norm_jac )
min_norm_jac = temp_norm_jac;
else
temp_norm_jac = jacobi;
// J(0,1,0):
xxi = node_pos[0] - node_pos[3];
xet = node_pos[2] - node_pos[3];
xze = node_pos[7] - node_pos[3];
jacobi = xxi % ( xet * xze );
// if( jacobi < min_jacobi ) { min_jacobi = jacobi; }
len1_sq = xxi.length_squared();
len2_sq = xet.length_squared();
len3_sq = xze.length_squared();
if( len1_sq <= VERDICT_DBL_MIN || len2_sq <= VERDICT_DBL_MIN || len3_sq <= VERDICT_DBL_MIN )
return (double)VERDICT_DBL_MAX;
lengths = sqrt( len1_sq * len2_sq * len3_sq );
temp_norm_jac = jacobi / lengths;
if( temp_norm_jac < min_norm_jac )
min_norm_jac = temp_norm_jac;
else
temp_norm_jac = jacobi;
// J(0,0,1):
xxi = node_pos[7] - node_pos[4];
xet = node_pos[5] - node_pos[4];
xze = node_pos[0] - node_pos[4];
jacobi = xxi % ( xet * xze );
// if( jacobi < min_jacobi ) { min_jacobi = jacobi; }
len1_sq = xxi.length_squared();
len2_sq = xet.length_squared();
len3_sq = xze.length_squared();
if( len1_sq <= VERDICT_DBL_MIN || len2_sq <= VERDICT_DBL_MIN || len3_sq <= VERDICT_DBL_MIN )
return (double)VERDICT_DBL_MAX;
lengths = sqrt( len1_sq * len2_sq * len3_sq );
temp_norm_jac = jacobi / lengths;
if( temp_norm_jac < min_norm_jac )
min_norm_jac = temp_norm_jac;
else
temp_norm_jac = jacobi;
// J(1,0,1):
xxi = node_pos[4] - node_pos[5];
xet = node_pos[6] - node_pos[5];
xze = node_pos[1] - node_pos[5];
jacobi = xxi % ( xet * xze );
// if( jacobi < min_jacobi ) { min_jacobi = jacobi; }
len1_sq = xxi.length_squared();
len2_sq = xet.length_squared();
len3_sq = xze.length_squared();
if( len1_sq <= VERDICT_DBL_MIN || len2_sq <= VERDICT_DBL_MIN || len3_sq <= VERDICT_DBL_MIN )
return (double)VERDICT_DBL_MAX;
lengths = sqrt( len1_sq * len2_sq * len3_sq );
temp_norm_jac = jacobi / lengths;
if( temp_norm_jac < min_norm_jac )
min_norm_jac = temp_norm_jac;
else
temp_norm_jac = jacobi;
// J(1,1,1):
xxi = node_pos[5] - node_pos[6];
xet = node_pos[7] - node_pos[6];
xze = node_pos[2] - node_pos[6];
jacobi = xxi % ( xet * xze );
// if( jacobi < min_jacobi ) { min_jacobi = jacobi; }
len1_sq = xxi.length_squared();
len2_sq = xet.length_squared();
len3_sq = xze.length_squared();
if( len1_sq <= VERDICT_DBL_MIN || len2_sq <= VERDICT_DBL_MIN || len3_sq <= VERDICT_DBL_MIN )
return (double)VERDICT_DBL_MAX;
lengths = sqrt( len1_sq * len2_sq * len3_sq );
temp_norm_jac = jacobi / lengths;
if( temp_norm_jac < min_norm_jac )
min_norm_jac = temp_norm_jac;
else
temp_norm_jac = jacobi;
// J(0,1,1):
xxi = node_pos[6] - node_pos[7];
xet = node_pos[4] - node_pos[7];
xze = node_pos[3] - node_pos[7];
jacobi = xxi % ( xet * xze );
// if( jacobi < min_jacobi ) { min_jacobi = jacobi; }
len1_sq = xxi.length_squared();
len2_sq = xet.length_squared();
len3_sq = xze.length_squared();
if( len1_sq <= VERDICT_DBL_MIN || len2_sq <= VERDICT_DBL_MIN || len3_sq <= VERDICT_DBL_MIN )
return (double)VERDICT_DBL_MAX;
lengths = sqrt( len1_sq * len2_sq * len3_sq );
temp_norm_jac = jacobi / lengths;
if( temp_norm_jac < min_norm_jac ) min_norm_jac = temp_norm_jac;
// else
// temp_norm_jac = jacobi;
if( min_norm_jac > 0 ) return (double)VERDICT_MIN( min_norm_jac, VERDICT_DBL_MAX );
return (double)VERDICT_MAX( min_norm_jac, -VERDICT_DBL_MAX );
}
| C_FUNC_DEF double v_hex_shape | ( | int | , |
| double | coordinates[][3] | ||
| ) |
Calculates hex shape metric.
shape of a hex
3/Condition number of weighted Jacobian matrix
Definition at line 1931 of file V_HexMetric.cpp.
References make_hex_nodes, VERDICT_DBL_MAX, VERDICT_DBL_MIN, VERDICT_MAX, and VERDICT_MIN.
Referenced by moab::VerdictWrapper::quality_measure(), and v_hex_shape_and_size().
{
double det, shape;
double min_shape = 1.0;
static const double two_thirds = 2.0 / 3.0;
VerdictVector xxi, xet, xze;
VerdictVector node_pos[8];
make_hex_nodes( coordinates, node_pos );
// J(0,0,0):
xxi = node_pos[1] - node_pos[0];
xet = node_pos[3] - node_pos[0];
xze = node_pos[4] - node_pos[0];
det = xxi % ( xet * xze );
if( det > VERDICT_DBL_MIN )
shape = 3 * pow( det, two_thirds ) / ( xxi % xxi + xet % xet + xze % xze );
else
return 0;
if( shape < min_shape )
{
min_shape = shape;
}
// J(1,0,0):
xxi = node_pos[2] - node_pos[1];
xet = node_pos[0] - node_pos[1];
xze = node_pos[5] - node_pos[1];
det = xxi % ( xet * xze );
if( det > VERDICT_DBL_MIN )
shape = 3 * pow( det, two_thirds ) / ( xxi % xxi + xet % xet + xze % xze );
else
return 0;
if( shape < min_shape )
{
min_shape = shape;
}
// J(1,1,0):
xxi = node_pos[3] - node_pos[2];
xet = node_pos[1] - node_pos[2];
xze = node_pos[6] - node_pos[2];
det = xxi % ( xet * xze );
if( det > VERDICT_DBL_MIN )
shape = 3 * pow( det, two_thirds ) / ( xxi % xxi + xet % xet + xze % xze );
else
return 0;
if( shape < min_shape )
{
min_shape = shape;
}
// J(0,1,0):
xxi = node_pos[0] - node_pos[3];
xet = node_pos[2] - node_pos[3];
xze = node_pos[7] - node_pos[3];
det = xxi % ( xet * xze );
if( det > VERDICT_DBL_MIN )
shape = 3 * pow( det, two_thirds ) / ( xxi % xxi + xet % xet + xze % xze );
else
return 0;
if( shape < min_shape )
{
min_shape = shape;
}
// J(0,0,1):
xxi = node_pos[7] - node_pos[4];
xet = node_pos[5] - node_pos[4];
xze = node_pos[0] - node_pos[4];
det = xxi % ( xet * xze );
if( det > VERDICT_DBL_MIN )
shape = 3 * pow( det, two_thirds ) / ( xxi % xxi + xet % xet + xze % xze );
else
return 0;
if( shape < min_shape )
{
min_shape = shape;
}
// J(1,0,1):
xxi = node_pos[4] - node_pos[5];
xet = node_pos[6] - node_pos[5];
xze = node_pos[1] - node_pos[5];
det = xxi % ( xet * xze );
if( det > VERDICT_DBL_MIN )
shape = 3 * pow( det, two_thirds ) / ( xxi % xxi + xet % xet + xze % xze );
else
return 0;
if( shape < min_shape )
{
min_shape = shape;
}
// J(1,1,1):
xxi = node_pos[5] - node_pos[6];
xet = node_pos[7] - node_pos[6];
xze = node_pos[2] - node_pos[6];
det = xxi % ( xet * xze );
if( det > VERDICT_DBL_MIN )
shape = 3 * pow( det, two_thirds ) / ( xxi % xxi + xet % xet + xze % xze );
else
return 0;
if( shape < min_shape )
{
min_shape = shape;
}
// J(1,1,1):
xxi = node_pos[6] - node_pos[7];
xet = node_pos[4] - node_pos[7];
xze = node_pos[3] - node_pos[7];
det = xxi % ( xet * xze );
if( det > VERDICT_DBL_MIN )
shape = 3 * pow( det, two_thirds ) / ( xxi % xxi + xet % xet + xze % xze );
else
return 0;
if( shape < min_shape )
{
min_shape = shape;
}
if( min_shape <= VERDICT_DBL_MIN ) min_shape = 0;
if( min_shape > 0 ) return (double)VERDICT_MIN( min_shape, VERDICT_DBL_MAX );
return (double)VERDICT_MAX( min_shape, -VERDICT_DBL_MAX );
}
| C_FUNC_DEF double v_hex_shape_and_size | ( | int | num_nodes, |
| double | coordinates[][3] | ||
| ) |
Calculates hex shape-size metric.
shape and size of a hex
Product of Shape and Relative Size
Definition at line 2198 of file V_HexMetric.cpp.
References size, v_hex_relative_size_squared(), v_hex_shape(), VERDICT_DBL_MAX, VERDICT_MAX, and VERDICT_MIN.
Referenced by moab::VerdictWrapper::quality_measure().
{
double size = v_hex_relative_size_squared( num_nodes, coordinates );
double shape = v_hex_shape( num_nodes, coordinates );
double shape_size = size * shape;
if( shape_size > 0 ) return (double)VERDICT_MIN( shape_size, VERDICT_DBL_MAX );
return (double)VERDICT_MAX( shape_size, -VERDICT_DBL_MAX );
}
| C_FUNC_DEF double v_hex_shear | ( | int | , |
| double | coordinates[][3] | ||
| ) |
Calculates hex shear metric.
shear of a hex
3/Condition number of Jacobian Skew matrix
Definition at line 1733 of file V_HexMetric.cpp.
References VerdictVector::length_squared(), make_hex_nodes, VERDICT_DBL_MAX, VERDICT_DBL_MIN, VERDICT_MAX, and VERDICT_MIN.
Referenced by moab::VerdictWrapper::quality_measure(), and v_hex_shear_and_size().
{
double shear;
double min_shear = 1.0;
VerdictVector xxi, xet, xze;
double det, len1_sq, len2_sq, len3_sq, lengths;
VerdictVector node_pos[8];
make_hex_nodes( coordinates, node_pos );
// J(0,0,0):
xxi = node_pos[1] - node_pos[0];
xet = node_pos[3] - node_pos[0];
xze = node_pos[4] - node_pos[0];
len1_sq = xxi.length_squared();
len2_sq = xet.length_squared();
len3_sq = xze.length_squared();
if( len1_sq <= VERDICT_DBL_MIN || len2_sq <= VERDICT_DBL_MIN || len3_sq <= VERDICT_DBL_MIN ) return 0;
lengths = sqrt( len1_sq * len2_sq * len3_sq );
det = xxi % ( xet * xze );
if( det < VERDICT_DBL_MIN )
{
return 0;
}
shear = det / lengths;
min_shear = VERDICT_MIN( shear, min_shear );
// J(1,0,0):
xxi = node_pos[2] - node_pos[1];
xet = node_pos[0] - node_pos[1];
xze = node_pos[5] - node_pos[1];
len1_sq = xxi.length_squared();
len2_sq = xet.length_squared();
len3_sq = xze.length_squared();
if( len1_sq <= VERDICT_DBL_MIN || len2_sq <= VERDICT_DBL_MIN || len3_sq <= VERDICT_DBL_MIN ) return 0;
lengths = sqrt( len1_sq * len2_sq * len3_sq );
det = xxi % ( xet * xze );
if( det < VERDICT_DBL_MIN )
{
return 0;
}
shear = det / lengths;
min_shear = VERDICT_MIN( shear, min_shear );
// J(1,1,0):
xxi = node_pos[3] - node_pos[2];
xet = node_pos[1] - node_pos[2];
xze = node_pos[6] - node_pos[2];
len1_sq = xxi.length_squared();
len2_sq = xet.length_squared();
len3_sq = xze.length_squared();
if( len1_sq <= VERDICT_DBL_MIN || len2_sq <= VERDICT_DBL_MIN || len3_sq <= VERDICT_DBL_MIN ) return 0;
lengths = sqrt( len1_sq * len2_sq * len3_sq );
det = xxi % ( xet * xze );
if( det < VERDICT_DBL_MIN )
{
return 0;
}
shear = det / lengths;
min_shear = VERDICT_MIN( shear, min_shear );
// J(0,1,0):
xxi = node_pos[0] - node_pos[3];
xet = node_pos[2] - node_pos[3];
xze = node_pos[7] - node_pos[3];
len1_sq = xxi.length_squared();
len2_sq = xet.length_squared();
len3_sq = xze.length_squared();
if( len1_sq <= VERDICT_DBL_MIN || len2_sq <= VERDICT_DBL_MIN || len3_sq <= VERDICT_DBL_MIN ) return 0;
lengths = sqrt( len1_sq * len2_sq * len3_sq );
det = xxi % ( xet * xze );
if( det < VERDICT_DBL_MIN )
{
return 0;
}
shear = det / lengths;
min_shear = VERDICT_MIN( shear, min_shear );
// J(0,0,1):
xxi = node_pos[7] - node_pos[4];
xet = node_pos[5] - node_pos[4];
xze = node_pos[0] - node_pos[4];
len1_sq = xxi.length_squared();
len2_sq = xet.length_squared();
len3_sq = xze.length_squared();
if( len1_sq <= VERDICT_DBL_MIN || len2_sq <= VERDICT_DBL_MIN || len3_sq <= VERDICT_DBL_MIN ) return 0;
lengths = sqrt( len1_sq * len2_sq * len3_sq );
det = xxi % ( xet * xze );
if( det < VERDICT_DBL_MIN )
{
return 0;
}
shear = det / lengths;
min_shear = VERDICT_MIN( shear, min_shear );
// J(1,0,1):
xxi = node_pos[4] - node_pos[5];
xet = node_pos[6] - node_pos[5];
xze = node_pos[1] - node_pos[5];
len1_sq = xxi.length_squared();
len2_sq = xet.length_squared();
len3_sq = xze.length_squared();
if( len1_sq <= VERDICT_DBL_MIN || len2_sq <= VERDICT_DBL_MIN || len3_sq <= VERDICT_DBL_MIN ) return 0;
lengths = sqrt( len1_sq * len2_sq * len3_sq );
det = xxi % ( xet * xze );
if( det < VERDICT_DBL_MIN )
{
return 0;
}
shear = det / lengths;
min_shear = VERDICT_MIN( shear, min_shear );
// J(1,1,1):
xxi = node_pos[5] - node_pos[6];
xet = node_pos[7] - node_pos[6];
xze = node_pos[2] - node_pos[6];
len1_sq = xxi.length_squared();
len2_sq = xet.length_squared();
len3_sq = xze.length_squared();
if( len1_sq <= VERDICT_DBL_MIN || len2_sq <= VERDICT_DBL_MIN || len3_sq <= VERDICT_DBL_MIN ) return 0;
lengths = sqrt( len1_sq * len2_sq * len3_sq );
det = xxi % ( xet * xze );
if( det < VERDICT_DBL_MIN )
{
return 0;
}
shear = det / lengths;
min_shear = VERDICT_MIN( shear, min_shear );
// J(0,1,1):
xxi = node_pos[6] - node_pos[7];
xet = node_pos[4] - node_pos[7];
xze = node_pos[3] - node_pos[7];
len1_sq = xxi.length_squared();
len2_sq = xet.length_squared();
len3_sq = xze.length_squared();
if( len1_sq <= VERDICT_DBL_MIN || len2_sq <= VERDICT_DBL_MIN || len3_sq <= VERDICT_DBL_MIN ) return 0;
lengths = sqrt( len1_sq * len2_sq * len3_sq );
det = xxi % ( xet * xze );
if( det < VERDICT_DBL_MIN )
{
return 0;
}
shear = det / lengths;
min_shear = VERDICT_MIN( shear, min_shear );
if( min_shear <= VERDICT_DBL_MIN ) min_shear = 0;
if( min_shear > 0 ) return (double)VERDICT_MIN( min_shear, VERDICT_DBL_MAX );
return (double)VERDICT_MAX( min_shear, -VERDICT_DBL_MAX );
}
| C_FUNC_DEF double v_hex_shear_and_size | ( | int | num_nodes, |
| double | coordinates[][3] | ||
| ) |
Calculates hex shear-size metric.
shear and size of a hex
Product of Shear and Relative Size
Definition at line 2214 of file V_HexMetric.cpp.
References size, v_hex_relative_size_squared(), v_hex_shear(), VERDICT_DBL_MAX, VERDICT_MAX, and VERDICT_MIN.
Referenced by moab::VerdictWrapper::quality_measure().
{
double size = v_hex_relative_size_squared( num_nodes, coordinates );
double shear = v_hex_shear( num_nodes, coordinates );
double shear_size = shear * size;
if( shear_size > 0 ) return (double)VERDICT_MIN( shear_size, VERDICT_DBL_MAX );
return (double)VERDICT_MAX( shear_size, -VERDICT_DBL_MAX );
}
| C_FUNC_DEF double v_hex_skew | ( | int | , |
| double | coordinates[][3] | ||
| ) |
Calculates hex skew metric.
skew of a hex
Maximum ||cosA|| where A is the angle between edges at hex center.
Definition at line 674 of file V_HexMetric.cpp.
References calc_hex_efg(), make_hex_nodes, VerdictVector::normalize(), VERDICT_DBL_MAX, VERDICT_DBL_MIN, VERDICT_MAX, and VERDICT_MIN.
Referenced by moab::VerdictWrapper::quality_measure().
{
VerdictVector node_pos[8];
make_hex_nodes( coordinates, node_pos );
double skew_1, skew_2, skew_3;
VerdictVector efg1 = calc_hex_efg( 1, node_pos );
VerdictVector efg2 = calc_hex_efg( 2, node_pos );
VerdictVector efg3 = calc_hex_efg( 3, node_pos );
if( efg1.normalize() <= VERDICT_DBL_MIN ) return VERDICT_DBL_MAX;
if( efg2.normalize() <= VERDICT_DBL_MIN ) return VERDICT_DBL_MAX;
if( efg3.normalize() <= VERDICT_DBL_MIN ) return VERDICT_DBL_MAX;
skew_1 = fabs( efg1 % efg2 );
skew_2 = fabs( efg1 % efg3 );
skew_3 = fabs( efg2 % efg3 );
double skew = ( VERDICT_MAX( skew_1, VERDICT_MAX( skew_2, skew_3 ) ) );
if( skew > 0 ) return (double)VERDICT_MIN( skew, VERDICT_DBL_MAX );
return (double)VERDICT_MAX( skew, -VERDICT_DBL_MAX );
}
| C_FUNC_DEF double v_hex_stretch | ( | int | , |
| double | coordinates[][3] | ||
| ) |
Calculates hex stretch metric.
stretch of a hex
sqrt(3) * minimum edge length / maximum diagonal length
Definition at line 753 of file V_HexMetric.cpp.
References diag_length(), hex_edge_length(), safe_ratio(), VERDICT_DBL_MAX, VERDICT_MAX, and VERDICT_MIN.
Referenced by moab::VerdictWrapper::quality_measure().
{
static const double HEX_STRETCH_SCALE_FACTOR = sqrt( 3.0 );
double min_edge = hex_edge_length( 0, coordinates );
double max_diag = diag_length( 1, coordinates );
double stretch = HEX_STRETCH_SCALE_FACTOR * safe_ratio( min_edge, max_diag );
if( stretch > 0 ) return (double)VERDICT_MIN( stretch, VERDICT_DBL_MAX );
return (double)VERDICT_MAX( stretch, -VERDICT_DBL_MAX );
}
| C_FUNC_DEF double v_hex_taper | ( | int | , |
| double | coordinates[][3] | ||
| ) |
Calculates hex taper metric.
taper of a hex
Maximum ratio of lengths derived from opposite edges.
Definition at line 704 of file V_HexMetric.cpp.
References calc_hex_efg(), VerdictVector::length(), make_hex_nodes, safe_ratio(), VERDICT_DBL_MAX, VERDICT_MAX, and VERDICT_MIN.
Referenced by moab::VerdictWrapper::quality_measure().
{
VerdictVector node_pos[8];
make_hex_nodes( coordinates, node_pos );
VerdictVector efg1 = calc_hex_efg( 1, node_pos );
VerdictVector efg2 = calc_hex_efg( 2, node_pos );
VerdictVector efg3 = calc_hex_efg( 3, node_pos );
VerdictVector efg12 = calc_hex_efg( 12, node_pos );
VerdictVector efg13 = calc_hex_efg( 13, node_pos );
VerdictVector efg23 = calc_hex_efg( 23, node_pos );
double taper_1 = fabs( safe_ratio( efg12.length(), VERDICT_MIN( efg1.length(), efg2.length() ) ) );
double taper_2 = fabs( safe_ratio( efg13.length(), VERDICT_MIN( efg1.length(), efg3.length() ) ) );
double taper_3 = fabs( safe_ratio( efg23.length(), VERDICT_MIN( efg2.length(), efg3.length() ) ) );
double taper = (double)VERDICT_MAX( taper_1, VERDICT_MAX( taper_2, taper_3 ) );
if( taper > 0 ) return (double)VERDICT_MIN( taper, VERDICT_DBL_MAX );
return (double)VERDICT_MAX( taper, -VERDICT_DBL_MAX );
}
| C_FUNC_DEF double v_hex_volume | ( | int | , |
| double | coordinates[][3] | ||
| ) |
Calculates hex volume.
volume of a hex
Jacobian at hex center
Definition at line 732 of file V_HexMetric.cpp.
References calc_hex_efg(), make_hex_nodes, VERDICT_DBL_MAX, VERDICT_MAX, and VERDICT_MIN.
Referenced by moab::VerdictWrapper::quality_measure(), and v_hex_quality().
{
VerdictVector node_pos[8];
make_hex_nodes( coordinates, node_pos );
VerdictVector efg1 = calc_hex_efg( 1, node_pos );
VerdictVector efg2 = calc_hex_efg( 2, node_pos );
VerdictVector efg3 = calc_hex_efg( 3, node_pos );
double volume;
volume = (double)( efg1 % ( efg2 * efg3 ) ) / 64.0;
if( volume > 0 ) return (double)VERDICT_MIN( volume, VERDICT_DBL_MAX );
return (double)VERDICT_MAX( volume, -VERDICT_DBL_MAX );
}
| C_FUNC_DEF void v_set_hex_size | ( | double | size | ) |
returns the average volume of a hex
Sets average size (volume) of hex, needed for v_hex_relative_size(...)
Definition at line 57 of file V_HexMetric.cpp.
References size, and verdict_hex_size.
Referenced by moab::VerdictWrapper::set_size().
{
verdict_hex_size = size;
}
| double verdict_hex_size = 0 |
the average volume of a hex
Definition at line 36 of file V_HexMetric.cpp.
Referenced by v_hex_get_weight(), and v_set_hex_size().
1.7.6.1.
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