Mesh Oriented datABase  (version 5.4.1)
Array-based unstructured mesh datastructure
Public Member Functions | Static Public Member Functions | Private Attributes
moab::AxisBox Class Reference

Class representing axis-aligned bounding box. More...

#include <AxisBox.hpp>

Public Member Functions

 AxisBox ()
 AxisBox (const double *min, const double *max)
 AxisBox (const double *point)
AxisBox & operator&= (const AxisBox &other)
AxisBox & operator|= (const AxisBox &other)
AxisBox & operator|= (const double *point)
const double * minimum () const
const double * maximum () const
double * minimum ()
double * maximum ()
void center (double *center_out) const
void diagonal (double *diagonal_out) const
bool intersects (const AxisBox &other, double tolerance) const
 Check if two boxes intersect.
bool intersects (const double *point, double tolerance) const
 Check if box contains point.
bool valid () const
 Check that box is valid.
void closest_position_within_box (const double *input_position, double *output_position) const
 Find closest position on/within box to input position.

Static Public Member Functions

static ErrorCode get_tag (Tag &tag_handle_out, Interface *interface, const char *tag_name=0)
static ErrorCode calculate (AxisBox &box_out, EntityHandle set, Interface *interface)
static ErrorCode calculate (AxisBox &box_out, const Range &elements, Interface *interface)

Private Attributes

double minVect [3]
double maxVect [3]

Detailed Description

Class representing axis-aligned bounding box.

Author:
Jason Kraftcheck ([email protected])
Date:
August, 2006

Definition at line 30 of file AxisBox.hpp.

Constructor & Destructor Documentation

moab::AxisBox::AxisBox ( ) [inline]

Definition at line 134 of file AxisBox.hpp.

References maxVect, and minVect.

Referenced by calculate().

{
    minVect[0] = minVect[1] = minVect[2] = std::numeric_limits< double >::max();
    maxVect[0] = maxVect[1] = maxVect[2] = -std::numeric_limits< double >::max();
}
moab::AxisBox::AxisBox ( const double *  min,
const double *  max 
) [inline]

Definition at line 140 of file AxisBox.hpp.

References maxVect, and minVect.

{
    minVect[0] = min[0];
    minVect[1] = min[1];
    minVect[2] = min[2];
    maxVect[0] = max[0];
    maxVect[1] = max[1];
    maxVect[2] = max[2];
}
moab::AxisBox::AxisBox ( const double *  point) [inline]

Definition at line 150 of file AxisBox.hpp.

References maxVect, and minVect.

{
    minVect[0] = maxVect[0] = point[0];
    minVect[1] = maxVect[1] = point[1];
    minVect[2] = maxVect[2] = point[2];
}

Member Function Documentation

ErrorCode moab::AxisBox::calculate ( AxisBox &  box_out,
EntityHandle  set,
Interface *  interface 
) [static]

Calculate a box bounding the entities contained in the passed set

Definition at line 41 of file AxisBox.cpp.

References ErrorCode, moab::Interface::get_entities_by_handle(), and MB_SUCCESS.

{
    Range range;
    ErrorCode rval = interface->get_entities_by_handle( set, range );
    if( MB_SUCCESS != rval ) return rval;

    return calculate( box, range, interface );
}
ErrorCode moab::AxisBox::calculate ( AxisBox &  box_out,
const Range &  elements,
Interface *  interface 
) [static]

Calculate a box bounding the vertices/elements in the passed Range

Definition at line 50 of file AxisBox.cpp.

References AxisBox(), moab::Range::begin(), ErrorCode, moab::Interface::get_adjacencies(), moab::Interface::get_coords(), moab::Range::lower_bound(), MB_SUCCESS, MBENTITYSET, MBVERTEX, moab::Range::merge(), moab::Range::size(), and moab::Range::upper_bound().

{
    ErrorCode rval;
    Range vertices;
    Range elements;

    elements.merge( entities.upper_bound( MBVERTEX ), entities.lower_bound( MBENTITYSET ) );
    rval = interface->get_adjacencies( elements, 0, false, vertices );
    if( MB_SUCCESS != rval ) return rval;

    vertices.merge( entities.begin(), entities.upper_bound( MBVERTEX ) );

    std::vector< double > coords( 3 * vertices.size() );
    rval = interface->get_coords( vertices, &coords[0] );
    if( MB_SUCCESS != rval ) return rval;

    box                                     = AxisBox();
    std::vector< double >::const_iterator i = coords.begin();
    for( ; i != coords.end(); i += 3 )
        box |= &*i;

    return MB_SUCCESS;
}
void moab::AxisBox::center ( double *  center_out) const [inline]

Definition at line 187 of file AxisBox.hpp.

References maxVect, and minVect.

{
    center_out[0] = 0.5 * ( minVect[0] + maxVect[0] );
    center_out[1] = 0.5 * ( minVect[1] + maxVect[1] );
    center_out[2] = 0.5 * ( minVect[2] + maxVect[2] );
}
void moab::AxisBox::closest_position_within_box ( const double *  input_position,
double *  output_position 
) const [inline]

Find closest position on/within box to input position.

Find the closest position in the solid box to the input position. If the input position is on or within the box, then the output position will be the same as the input position. If the input position is outside the box, the outside position will be the closest point on the box boundary to the input position.

Definition at line 220 of file AxisBox.hpp.

References maxVect, and minVect.

{
    for( int i = 0; i < 3; ++i )
    {
        if( input_position[i] < minVect[i] )
            output_position[i] = minVect[i];
        else if( input_position[i] > maxVect[i] )
            output_position[i] = maxVect[i];
        else
            output_position[i] = input_position[i];
    }
}
void moab::AxisBox::diagonal ( double *  diagonal_out) const [inline]

Definition at line 194 of file AxisBox.hpp.

References maxVect, and minVect.

{
    diagonal_out[0] = maxVect[0] - minVect[0];
    diagonal_out[1] = maxVect[1] - minVect[1];
    diagonal_out[2] = maxVect[2] - minVect[2];
}
ErrorCode moab::AxisBox::get_tag ( Tag &  tag_handle_out,
Interface *  interface,
const char *  tag_name = 0 
) [static]

Definition at line 31 of file AxisBox.cpp.

References moab::AXIS_BOX_TAG_NAME, MB_TAG_BYTES, MB_TAG_CREAT, MB_TAG_DENSE, MB_TYPE_DOUBLE, and moab::Interface::tag_get_handle().

{
    assert( sizeof( AxisBox ) == 6 * sizeof( double ) );

    if( !tagname ) tagname = AXIS_BOX_TAG_NAME;

    return interface->tag_get_handle( tagname, sizeof( AxisBox ), MB_TYPE_DOUBLE, tag_out,
                                      MB_TAG_DENSE | MB_TAG_CREAT | MB_TAG_BYTES );
}
bool moab::AxisBox::intersects ( const AxisBox &  other,
double  tolerance 
) const [inline]

Check if two boxes intersect.

Check if two boxes are within the specified tolerance of each other. If tolerance is less than zero, then boxes must overlap by at least the magnitude of the tolerance to be considered intersecting.

Definition at line 201 of file AxisBox.hpp.

References maxVect, minVect, and moab::tolerance.

{
    return minVect[0] - other.maxVect[0] <= tolerance && minVect[1] - other.maxVect[1] <= tolerance &&
           minVect[2] - other.maxVect[2] <= tolerance && other.minVect[0] - maxVect[0] <= tolerance &&
           other.minVect[1] - maxVect[1] <= tolerance && other.minVect[2] - maxVect[2] <= tolerance;
}
bool moab::AxisBox::intersects ( const double *  point,
double  tolerance 
) const [inline]

Check if box contains point.

Check if a position is in or on the box, within the specified tolerance

Definition at line 208 of file AxisBox.hpp.

References maxVect, minVect, and moab::tolerance.

{
    return minVect[0] - point[0] <= tolerance && minVect[1] - point[1] <= tolerance &&
           minVect[2] - point[2] <= tolerance && maxVect[0] - point[0] <= tolerance &&
           maxVect[1] - point[1] <= tolerance && maxVect[2] - point[2] <= tolerance;
}
const double* moab::AxisBox::maximum ( ) const [inline]

Definition at line 61 of file AxisBox.hpp.

References maxVect.

Referenced by moab::operator||().

    {
        return maxVect;
    }
double* moab::AxisBox::maximum ( ) [inline]

Definition at line 71 of file AxisBox.hpp.

References maxVect.

    {
        return maxVect;
    }
const double* moab::AxisBox::minimum ( ) const [inline]

Definition at line 56 of file AxisBox.hpp.

References minVect.

Referenced by moab::operator||().

    {
        return minVect;
    }
double* moab::AxisBox::minimum ( ) [inline]

Definition at line 66 of file AxisBox.hpp.

References minVect.

    {
        return minVect;
    }
AxisBox & moab::AxisBox::operator&= ( const AxisBox &  other) [inline]

intersect

Definition at line 157 of file AxisBox.hpp.

References maxVect, and minVect.

{
    for( int i = 0; i < 3; ++i )
    {
        if( minVect[i] < other.minVect[i] ) minVect[i] = other.minVect[i];
        if( maxVect[i] > other.maxVect[i] ) maxVect[i] = other.maxVect[i];
    }
    return *this;
}
AxisBox & moab::AxisBox::operator|= ( const AxisBox &  other) [inline]

unite

Definition at line 167 of file AxisBox.hpp.

References maxVect, and minVect.

{
    for( int i = 0; i < 3; ++i )
    {
        if( minVect[i] > other.minVect[i] ) minVect[i] = other.minVect[i];
        if( maxVect[i] < other.maxVect[i] ) maxVect[i] = other.maxVect[i];
    }
    return *this;
}
AxisBox & moab::AxisBox::operator|= ( const double *  point) [inline]

unite

Definition at line 177 of file AxisBox.hpp.

References maxVect, and minVect.

{
    for( int i = 0; i < 3; ++i )
    {
        if( minVect[i] > point[i] ) minVect[i] = point[i];
        if( maxVect[i] < point[i] ) maxVect[i] = point[i];
    }
    return *this;
}
bool moab::AxisBox::valid ( ) const [inline]

Check that box is valid.

Check that box is defined (contains at least a single point.)

Definition at line 215 of file AxisBox.hpp.

References maxVect, and minVect.

{
    return minVect[0] <= maxVect[0] && minVect[1] <= maxVect[1] && minVect[2] <= maxVect[2];
}

Member Data Documentation

double moab::AxisBox::maxVect[3] [private]

Definition at line 112 of file AxisBox.hpp.

Referenced by AxisBox(), center(), closest_position_within_box(), diagonal(), intersects(), maximum(), operator&=(), operator|=(), and valid().

double moab::AxisBox::minVect[3] [private]

Definition at line 112 of file AxisBox.hpp.

Referenced by AxisBox(), center(), closest_position_within_box(), diagonal(), intersects(), minimum(), operator&=(), operator|=(), and valid().

List of all members.

The documentation for this class was generated from the following files:
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