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d5f74e42d6
License statement text corrected; compiler warnings caused by Bison 2.41 disabled for MSVC; a few other compiler warnings on 54-bit Windows eliminated by appropriate type cast Wrong license statements corrected in several files. Copyright and license statements added in XSD and GLSL files. Copyright year updated in some files. Obsolete documentation files removed from DrawResources.
331 lines
12 KiB
C++
331 lines
12 KiB
C++
// Created on: 2003-09-16
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// Created by: Alexander SOLOVYOV
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// Copyright (c) 2003-2014 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#include <MeshVS_DataSource.ixx>
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#include <MeshVS_Tool.hxx>
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#include <MeshVS_Buffer.hxx>
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#include <gp.hxx>
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#include <gp_Vec.hxx>
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#include <TColgp_Array1OfPnt.hxx>
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#include <TColStd_MapIteratorOfPackedMapOfInteger.hxx>
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//================================================================
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// Function : Get3DGeom
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// Purpose :
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//================================================================
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Standard_Boolean MeshVS_DataSource::Get3DGeom( const Standard_Integer /*ID*/,
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Standard_Integer& /*NbNodes*/,
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Handle( MeshVS_HArray1OfSequenceOfInteger )& /*Data*/ ) const
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{
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return Standard_False;
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}
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//================================================================
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// Function : GetNormal
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// Purpose :
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//================================================================
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Standard_Boolean MeshVS_DataSource::GetNormal ( const Standard_Integer Id,
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const Standard_Integer Max,
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Standard_Real &nx,
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Standard_Real &ny,
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Standard_Real &nz ) const
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{
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if ( Max <= 0 )
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return Standard_False;
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MeshVS_Buffer aCoordsBuf (3*Max*sizeof(Standard_Real));
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TColStd_Array1OfReal Coords ( aCoordsBuf, 1, 3*Max );
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Standard_Integer nbNodes;
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MeshVS_EntityType Type;
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Standard_Boolean res = Standard_False;
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if ( !GetGeom ( Id, Standard_True, Coords, nbNodes, Type ) )
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return res;
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if ( Type == MeshVS_ET_Face && nbNodes >= 3 )
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{
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Standard_Real x1 = Coords( 1 );
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Standard_Real y1 = Coords( 2 );
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Standard_Real z1 = Coords( 3 );
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Standard_Real x2 = Coords( 4 );
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Standard_Real y2 = Coords( 5 );
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Standard_Real z2 = Coords( 6 );
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Standard_Real x3 = Coords( ( nbNodes - 1 ) * 3 + 1 );
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Standard_Real y3 = Coords( ( nbNodes - 1 ) * 3 + 2 );
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Standard_Real z3 = Coords( ( nbNodes - 1 ) * 3 + 3 );
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Standard_Real p1 = x2 - x1, p2 = y2 - y1, p3 = z2 - z1,
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q1 = x3 - x1, q2 = y3 - y1, q3 = z3 - z1;
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nx = p2*q3 - p3*q2;
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ny = p3*q1 - p1*q3;
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nz = p1*q2 - p2*q1;
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Standard_Real len = sqrt ( nx*nx + ny*ny + nz*nz );
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if ( len <= gp::Resolution() )
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{
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nx = ny = nz = 0;
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return res;
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}
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nx /= len; ny /= len; nz /= len;
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res = Standard_True;
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}
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return res;
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}
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//================================================================
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// Function : GetNodeNormal
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// Purpose :
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//================================================================
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Standard_Boolean MeshVS_DataSource::GetNodeNormal
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( const Standard_Integer /*ranknode*/,
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const Standard_Integer /*Id*/,
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Standard_Real &/*nx*/,
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Standard_Real &/*ny*/,
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Standard_Real &/*nz*/ ) const
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{
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return Standard_False;
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}
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//================================================================
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// Function : GetNormalsByElement
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// Purpose :
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//================================================================
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Standard_Boolean MeshVS_DataSource::GetNormalsByElement(const Standard_Integer Id,
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const Standard_Boolean IsNodal,
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const Standard_Integer MaxNodes,
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Handle(TColStd_HArray1OfReal)& Normals) const
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{
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MeshVS_Buffer aCoordsBuf (3*MaxNodes*sizeof(Standard_Real));
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TColStd_Array1OfReal Coords ( aCoordsBuf, 1, 3*MaxNodes );
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Standard_Integer NbNodes;
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MeshVS_EntityType Type;
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Standard_Boolean res = Standard_False;
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if ( MaxNodes <= 0 )
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return res;
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if ( !GetGeom ( Id, Standard_True, Coords, NbNodes, Type ) )
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return res;
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Standard_Integer aNbNormals = NbNodes;
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Handle( MeshVS_HArray1OfSequenceOfInteger ) aTopo;
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if ( Type == MeshVS_ET_Volume )
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{
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if( !Get3DGeom( Id, NbNodes, aTopo ) )
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return res;
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// calculate number of normals for faces of volume
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aNbNormals = aTopo->Upper() - aTopo->Lower() + 1;
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}
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Handle(TColStd_HArray1OfReal) aNormals = new TColStd_HArray1OfReal(1, 3 * aNbNormals );
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Standard_Boolean allNormals = ( Type == MeshVS_ET_Face && IsNodal );
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// Try returning nodal normals if possible
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for( Standard_Integer k=1; k<=NbNodes && allNormals; k++ )
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allNormals = GetNodeNormal( k,
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Id,
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aNormals->ChangeValue(3 * k - 2),
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aNormals->ChangeValue(3 * k - 1),
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aNormals->ChangeValue(3 * k ) );
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// Nodal normals not available or not needed
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if ( !allNormals )
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{
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switch ( Type )
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{
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// Compute a face normal and duplicate it for all element`s nodes
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case MeshVS_ET_Face:
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res = GetNormal( Id,
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MaxNodes,
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aNormals->ChangeValue(1),
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aNormals->ChangeValue(2),
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aNormals->ChangeValue(3) );
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if ( res )
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{
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for( Standard_Integer k=2; k<=NbNodes; k++ )
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{
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aNormals->ChangeValue(3 * k - 2) = aNormals->Value(1);
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aNormals->ChangeValue(3 * k - 1) = aNormals->Value(2);
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aNormals->ChangeValue(3 * k ) = aNormals->Value(3);
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}
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}
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break;
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// Compute normals for each of volum`s faces - not for each node!
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case MeshVS_ET_Volume:
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{
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gp_Vec norm;
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Standard_Integer low = Coords.Lower();
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for ( Standard_Integer k = aTopo->Lower(), last = aTopo->Upper(), i = 1; k <= last; k++, i++ )
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{
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const TColStd_SequenceOfInteger& aSeq = aTopo->Value( k );
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Standard_Integer m = aSeq.Length(), ind;
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norm.SetCoord( 0, 0, 0 );
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MeshVS_Buffer PolyNodesBuf (3*m*sizeof(Standard_Real));
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TColStd_Array1OfReal PolyNodes( PolyNodesBuf, 0, 3*m );
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PolyNodes.SetValue( 0, m );
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for( Standard_Integer j=1; j<=m; j++ )
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{
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ind = aSeq.Value( j );
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PolyNodes.SetValue( 3*j-2, Coords( low+3*ind ) );
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PolyNodes.SetValue( 3*j-1, Coords( low+3*ind+1 ) );
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PolyNodes.SetValue( 3*j, Coords( low+3*ind+2 ) );
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}
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MeshVS_Tool::GetAverageNormal( PolyNodes, norm );
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aNormals->ChangeValue(i * 3 - 2) = norm.X();
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aNormals->ChangeValue(i * 3 - 1) = norm.Y();
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aNormals->ChangeValue(i * 3 ) = norm.Z();
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}
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res = Standard_True;
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}
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break;
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default:
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return res;
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} // switch ( Type )
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} // if ( !allNormals )
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if ( res || allNormals )
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Normals = aNormals;
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return ( res || allNormals );
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}
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//================================================================
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// Function : GetAllGroups
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// Purpose :
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//================================================================
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void MeshVS_DataSource::GetAllGroups( TColStd_PackedMapOfInteger& /*Ids*/ ) const
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{
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}
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//================================================================
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// Function : GetGroup
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// Purpose :
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//================================================================
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Standard_Boolean MeshVS_DataSource::GetGroup( const Standard_Integer /*Id*/,
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MeshVS_EntityType& Type,
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TColStd_PackedMapOfInteger& /*Ids*/ ) const
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{
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Type = MeshVS_ET_NONE;
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return Standard_False;
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}
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//================================================================
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// Function : GetGroupAddr
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// Purpose :
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//================================================================
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Standard_Address MeshVS_DataSource::GetGroupAddr(const Standard_Integer /*ID*/) const
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{
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return NULL;
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}
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//================================================================
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// Function : IsAdvancedSelectionEnabled
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// Purpose :
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//================================================================
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Standard_Boolean MeshVS_DataSource::IsAdvancedSelectionEnabled() const
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{
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return Standard_False;
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}
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//================================================================
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// Function : GetDetectedEntities
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// Purpose :
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//================================================================
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Standard_Boolean MeshVS_DataSource::GetDetectedEntities(const Handle(MeshVS_Mesh)& /*theMesh*/,
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const Standard_Real /*X*/,
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const Standard_Real /*Y*/,
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const Standard_Real /*aTol*/,
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Handle(TColStd_HPackedMapOfInteger)& /*Nodes*/,
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Handle(TColStd_HPackedMapOfInteger)& /*Elements*/,
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Standard_Real& /*DMin*/)
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{
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return Standard_False;
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}
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//================================================================
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// Function : GetDetectedEntities
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// Purpose :
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//================================================================
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Standard_Boolean MeshVS_DataSource::GetDetectedEntities(const Handle(MeshVS_Mesh)& /*theMesh*/,
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const Standard_Real /*XMin*/,
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const Standard_Real /*YMin*/,
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const Standard_Real /*XMax*/,
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const Standard_Real /*YMax*/,
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const Standard_Real /*aTol*/,
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Handle(TColStd_HPackedMapOfInteger)& /*Nodes*/,
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Handle(TColStd_HPackedMapOfInteger)& /*Elements*/)
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{
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return Standard_False;
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}
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//================================================================
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// Function : GetDetectedEntities
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// Purpose :
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//================================================================
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Standard_Boolean MeshVS_DataSource::GetDetectedEntities(const Handle(MeshVS_Mesh)& /*theMesh*/,
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const TColgp_Array1OfPnt2d& /*Polyline*/,
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const Bnd_Box2d& /*aBox*/,
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const Standard_Real /*aTol*/,
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Handle(TColStd_HPackedMapOfInteger)& /*Nodes*/,
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Handle(TColStd_HPackedMapOfInteger)& /*Elements*/)
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{
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return Standard_False;
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}
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//================================================================
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// Function : GetDetectedEntities
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// Purpose :
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//================================================================
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Standard_Boolean MeshVS_DataSource::GetDetectedEntities(const Handle(MeshVS_Mesh)& /*theMesh*/,
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Handle(TColStd_HPackedMapOfInteger)& /*Nodes*/,
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Handle(TColStd_HPackedMapOfInteger)& /*Elements*/)
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{
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return Standard_False;
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}
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//================================================================
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// Function : GetBoundingBox
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// Purpose :
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//================================================================
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Bnd_Box MeshVS_DataSource::GetBoundingBox() const
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{
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// Compute the 3D bounding box for mesh
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Bnd_Box aBox;
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const TColStd_PackedMapOfInteger& aNodes = GetAllNodes();
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if( aNodes.Extent() )
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{
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Standard_Real aCoordsBuf[ 3 ];
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TColStd_Array1OfReal aCoords (*aCoordsBuf, 1, 3);
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Standard_Integer nbNodes;
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MeshVS_EntityType aType;
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TColStd_MapIteratorOfPackedMapOfInteger anIter (aNodes);
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for ( ; anIter.More(); anIter.Next() )
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{
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Standard_Integer aKey = anIter.Key();
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if ( !GetGeom ( aKey, Standard_False, aCoords, nbNodes, aType ) )
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continue;
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aBox.Add( gp_Pnt( aCoordsBuf[0], aCoordsBuf[1], aCoordsBuf[2] ) );
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}
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}
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return aBox;
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}
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