MOAB: Mesh Oriented datABase  (version 5.3.0)
XYRectangle.cpp
Go to the documentation of this file.
00001 /* *****************************************************************
00002     MESQUITE -- The Mesh Quality Improvement Toolkit
00003 
00004     Copyright 2007 Sandia National Laboratories.  Developed at the
00005     University of Wisconsin--Madison under SNL contract number
00006     624796.  The U.S. Government and the University of Wisconsin
00007     retain certain rights to this software.
00008 
00009     This library is free software; you can redistribute it and/or
00010     modify it under the terms of the GNU Lesser General Public
00011     License as published by the Free Software Foundation; either
00012     version 2.1 of the License, or (at your option) any later version.
00013 
00014     This library is distributed in the hope that it will be useful,
00015     but WITHOUT ANY WARRANTY; without even the implied warranty of
00016     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00017     Lesser General Public License for more details.
00018 
00019     You should have received a copy of the GNU Lesser General Public License
00020     (lgpl.txt) along with this library; if not, write to the Free Software
00021     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00022 
00023     (2007) kraftche@cae.wisc.edu
00024 
00025   ***************************************************************** */
00026 
00027 /** \file XYRectangle.cpp
00028  *  \brief
00029  *  \author Jason Kraftcheck
00030  */
00031 
00032 #include "Mesquite.hpp"
00033 #include "XYRectangle.hpp"
00034 #include "MsqError.hpp"
00035 #include "MsqVertex.hpp"
00036 
00037 namespace MBMesquite
00038 {
00039 
00040 XYRectangle::XYRectangle( double w, double h, double x, double y, double z, Plane p )
00041     : normalDir( p ), widthDir( ( p + 1 ) % 3 ), heightDir( ( p + 2 ) % 3 )
00042 {
00043     minCoords[0] = maxCoords[0] = x;
00044     minCoords[1] = maxCoords[1] = y;
00045     minCoords[2] = maxCoords[2] = z;
00046     maxCoords[widthDir] += w;
00047     maxCoords[heightDir] += h;
00048 }
00049 
00050 void XYRectangle::setup( Mesh* mesh, MsqError& err )
00051 {
00052     const double epsilon = 1e-4;
00053     if( maxCoords[widthDir] - minCoords[widthDir] <= epsilon ||
00054         maxCoords[heightDir] - minCoords[heightDir] <= epsilon ||
00055         maxCoords[normalDir] - minCoords[normalDir] > epsilon )
00056     {
00057         MSQ_SETERR( err )( "Invalid rectangle dimensions", MsqError::INVALID_STATE );
00058         return;
00059     }
00060 
00061     mConstraints.clear();
00062 
00063     std::vector< Mesh::EntityHandle > vertices;
00064     mesh->get_all_vertices( vertices, err );MSQ_ERRRTN( err );
00065     if( vertices.empty() )
00066     {
00067         MSQ_SETERR( err )( "Empty mesh", MsqError::INVALID_MESH );
00068         return;
00069     }
00070 
00071     std::vector< MsqVertex > coords( vertices.size() );
00072     mesh->vertices_get_coordinates( arrptr( vertices ), arrptr( coords ), coords.size(), err );MSQ_ERRRTN( err );
00073 
00074     for( size_t i = 0; i < vertices.size(); ++i )
00075     {
00076         for( int d = 0; d < 3; ++d )
00077         {
00078             if( d == normalDir ) continue;
00079             if( minCoords[d] - coords[i][d] > epsilon || coords[i][d] - maxCoords[d] > epsilon )
00080             {
00081                 MSQ_SETERR( err )
00082                 ( MsqError::INVALID_MESH, "Invalid vertex coordinate: (%f,%f,%f)\n", coords[i][0], coords[i][1],
00083                   coords[i][2] );
00084                 return;
00085             }
00086             else if( coords[i][d] - minCoords[d] < epsilon )
00087             {
00088                 VertexConstraint c( d, minCoords[d] );
00089                 mConstraints.insert( constraint_t::value_type( vertices[i], c ) );
00090             }
00091             else if( maxCoords[d] - coords[i][d] < epsilon )
00092             {
00093                 VertexConstraint c( d, maxCoords[d] );
00094                 mConstraints.insert( constraint_t::value_type( vertices[i], c ) );
00095             }
00096         }
00097     }
00098 }
00099 
00100 void XYRectangle::snap_to( Mesh::VertexHandle vertex, Vector3D& coordinate ) const
00101 {
00102     // everything gets moved into the plane
00103     coordinate[normalDir] = minCoords[normalDir];
00104     // apply other constraints
00105     constraint_t::const_iterator i = mConstraints.lower_bound( vertex );
00106     for( ; i != mConstraints.end() && i->first == vertex; ++i )
00107         coordinate[i->second.axis] = i->second.coord;
00108 }
00109 
00110 void XYRectangle::vertex_normal_at( Mesh::VertexHandle /*handle*/, Vector3D& norm ) const
00111 {
00112     norm.set( 0, 0, 0 );
00113     norm[normalDir] = 1.0;
00114 }
00115 
00116 void XYRectangle::element_normal_at( Mesh::ElementHandle /*handle*/, Vector3D& norm ) const
00117 {
00118     norm.set( 0, 0, 0 );
00119     norm[normalDir] = 1.0;
00120 }
00121 
00122 void XYRectangle::vertex_normal_at( const Mesh::VertexHandle* /*vertices*/, Vector3D normals[], unsigned count,
00123                                     MsqError& ) const
00124 {
00125     Vector3D norm( 0, 0, 0 );
00126     norm[normalDir] = 1.0;
00127     std::fill( normals, normals + count, norm );
00128 }
00129 
00130 void XYRectangle::closest_point( Mesh::VertexHandle vertex, const Vector3D& position, Vector3D& closest,
00131                                  Vector3D& normal, MsqError& ) const
00132 {
00133     normal = position;
00134     vertex_normal_at( vertex, normal );
00135     closest    = position;
00136     closest[2] = 0;
00137 }
00138 
00139 void XYRectangle::domain_DoF( const Mesh::VertexHandle* vertices, unsigned short* dof_array, size_t num_handles,
00140                               MsqError& ) const
00141 {
00142     for( unsigned i = 0; i < num_handles; ++i )
00143     {
00144         // everything is at least constrained to XY-plane
00145         dof_array[i] = 2;
00146         // each additional constraint reduces degrees of freedom
00147         constraint_t::const_iterator j = mConstraints.lower_bound( vertices[i] );
00148         for( ; j != mConstraints.end() && j->first == vertices[i]; ++j )
00149             --dof_array[i];
00150     }
00151 }
00152 
00153 }  // namespace MBMesquite
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Defines