-// Copyright (C) 2007-2013 CEA/DEN, EDF R&D, OPEN CASCADE
+// Copyright (C) 2007-2022 CEA/DEN, EDF R&D, OPEN CASCADE
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
-// version 2.1 of the License.
+// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
#include "GEOM_EdgeSource.h"
#include "GEOM_WireframeFace.h"
#include "GEOM_ShadingFace.h"
+#include "GEOMUtils.hxx"
#include <Bnd_Box.hxx>
#include <BRep_Tool.hxx>
#include <TopoDS.hxx>
#include <TopTools_ListOfShape.hxx>
-#define MAX2(X, Y) (Abs(X) > Abs(Y) ? Abs(X) : Abs(Y))
-#define MAX3(X, Y, Z) (MAX2(MAX2(X,Y), Z))
-
-#define DEFAULT_DEFLECTION 0.001
+#include <TopExp.hxx>
+#include <vtkAppendPolyData.h>
+#include <vtkPolyData.h>
+#include <BRepBuilderAPI_Copy.hxx>
namespace GEOM
{
- void MeshShape(const TopoDS_Shape theShape,
- float& theDeflection,
- bool theForced ) {
-
- Standard_Real aDeflection = theDeflection <= 0 ? DEFAULT_DEFLECTION : theDeflection;
-
- //If deflection <= 0, than return default deflection
- if(theDeflection <= 0)
- theDeflection = aDeflection;
-
- // Is shape triangulated?
- Standard_Boolean alreadymeshed = Standard_True;
- TopExp_Explorer ex;
- TopLoc_Location aLoc;
- for (ex.Init(theShape, TopAbs_FACE); ex.More(); ex.Next()) {
- const TopoDS_Face& aFace = TopoDS::Face(ex.Current());
- Handle(Poly_Triangulation) aPoly = BRep_Tool::Triangulation(aFace,aLoc);
- if(aPoly.IsNull()) {
- alreadymeshed = Standard_False;
- break;
- }
- }
-
- if(!alreadymeshed || theForced) {
- Bnd_Box B;
- BRepBndLib::Add(theShape, B);
- if ( B.IsVoid() )
- return; // NPAL15983 (Bug when displaying empty groups)
- Standard_Real aXmin, aYmin, aZmin, aXmax, aYmax, aZmax;
- B.Get(aXmin, aYmin, aZmin, aXmax, aYmax, aZmax);
-
- // This magic line comes from Prs3d_ShadedShape.gxx in OCCT
- aDeflection = MAX3(aXmax-aXmin, aYmax-aYmin, aZmax-aZmin) * aDeflection * 4;
-
- //Clean triangulation before compute incremental mesh
- BRepTools::Clean(theShape);
-
- //Compute triangulation
- BRepMesh_IncrementalMesh MESH(theShape,aDeflection);
- }
- }
-
- void SetShape(const TopoDS_Shape& theShape,
- const TopTools_IndexedDataMapOfShapeListOfShape& theEdgeMap,
- bool theIsVector,
- GEOM_EdgeSource* theIsolatedEdgeSource,
- GEOM_EdgeSource* theOneFaceEdgeSource,
- GEOM_EdgeSource* theSharedEdgeSource,
- GEOM_WireframeFace* theWireframeFaceSource,
- GEOM_ShadingFace* theShadingFaceSource)
+ void ShapeToVTK( const TopoDS_Shape& theShape,
+ const TopTools_IndexedDataMapOfShapeListOfShape& theEdgeMap,
+ bool theIsVector,
+ GEOM_VertexSource* theStandaloneVertexSource,
+ GEOM_EdgeSource* theIsolatedEdgeSource,
+ GEOM_EdgeSource* theOneFaceEdgeSource,
+ GEOM_EdgeSource* theSharedEdgeSource,
+ GEOM_WireframeFace* theWireframeFaceSource,
+ GEOM_ShadingFace* theShadingFaceSource )
{
if (theShape.ShapeType() == TopAbs_COMPOUND) {
TopoDS_Iterator anItr(theShape);
for (; anItr.More(); anItr.Next()) {
- SetShape(anItr.Value(),theEdgeMap,theIsVector,
- theIsolatedEdgeSource,
- theOneFaceEdgeSource,
- theSharedEdgeSource,
- theWireframeFaceSource,
- theShadingFaceSource);
+ ShapeToVTK( anItr.Value(),theEdgeMap,theIsVector,
+ theStandaloneVertexSource,
+ theIsolatedEdgeSource,
+ theOneFaceEdgeSource,
+ theSharedEdgeSource,
+ theWireframeFaceSource,
+ theShadingFaceSource );
}
}
break;
}
case TopAbs_VERTEX: {
+ if ( theStandaloneVertexSource ) {
+ const TopoDS_Vertex& aVertex = TopoDS::Vertex(theShape);
+ theStandaloneVertexSource->AddVertex(aVertex);
+ }
break;
}
default: {
}
}
}
+
+ vtkPolyData* GetVTKData( const TopoDS_Shape& theShape, float theDeflection )
+ {
+ vtkPolyData* ret = 0;
+
+ BRepBuilderAPI_Copy aCopy(theShape);
+ if (aCopy.IsDone() ) {
+
+ TopoDS_Shape aShape = aCopy.Shape();
+
+ try {
+ GEOM_VertexSource* myVertexSource = GEOM_VertexSource::New();
+ GEOM_EdgeSource* myIsolatedEdgeSource = GEOM_EdgeSource::New();
+ GEOM_EdgeSource* myOneFaceEdgeSource = GEOM_EdgeSource::New();
+ GEOM_EdgeSource* mySharedEdgeSource = GEOM_EdgeSource::New();
+ GEOM_WireframeFace* myWireframeFaceSource = GEOM_WireframeFace::New();
+ GEOM_ShadingFace* myShadingFaceSource = GEOM_ShadingFace::New();
+
+ vtkAppendPolyData* myAppendFilter = vtkAppendPolyData::New();
+ myAppendFilter->AddInputConnection( myVertexSource->GetOutputPort() );
+ myAppendFilter->AddInputConnection( myIsolatedEdgeSource->GetOutputPort() );
+ myAppendFilter->AddInputConnection( myOneFaceEdgeSource->GetOutputPort() );
+ myAppendFilter->AddInputConnection( mySharedEdgeSource->GetOutputPort() );
+ myAppendFilter->AddInputConnection( myShadingFaceSource->GetOutputPort() );
+
+ bool anIsVector = false;
+
+ GEOMUtils::MeshShape( aShape, theDeflection );
+ TopExp_Explorer aVertexExp( aShape, TopAbs_VERTEX );
+ for( ; aVertexExp.More(); aVertexExp.Next() ) {
+ const TopoDS_Vertex& aVertex = TopoDS::Vertex( aVertexExp.Current() );
+ myVertexSource->AddVertex( aVertex );
+ }
+
+ TopTools_IndexedDataMapOfShapeListOfShape anEdgeMap;
+ TopExp::MapShapesAndAncestors( aShape, TopAbs_EDGE, TopAbs_FACE, anEdgeMap );
+
+ ShapeToVTK( aShape,
+ anEdgeMap,
+ anIsVector,
+ 0,
+ myIsolatedEdgeSource,
+ myOneFaceEdgeSource,
+ mySharedEdgeSource,
+ myWireframeFaceSource,
+ myShadingFaceSource );
+
+ myAppendFilter->Update();
+
+ myVertexSource->Delete();
+ myIsolatedEdgeSource->Delete();
+ myOneFaceEdgeSource->Delete();
+ mySharedEdgeSource->Delete();
+ myWireframeFaceSource->Delete();
+ myShadingFaceSource->Delete();
+
+ ret = vtkPolyData::New();
+ ret->ShallowCopy(myAppendFilter->GetOutput());
+ myAppendFilter->Delete();
+ }
+ catch(Standard_Failure&) {
+ }
+ }
+ return ret;
+ }
}
