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https://git.dev.opencascade.org/repos/occt.git
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a2176e6524
Added Qt sample OCCTOverview providing examples of use of OCCT API with relevant code and demonstration of results in the viewer. Off-topic: some unused images are removed from dox/introduction/images/
119 lines
4.0 KiB
C++
119 lines
4.0 KiB
C++
// Copyright (c) 2020 OPEN CASCADE SAS
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//
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// This file is part of the examples of the Open CASCADE Technology software library.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE
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#include "TriangulationSamples.h"
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#include "MakeBottle.h"
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#include <AIS_Shape.hxx>
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#include <AIS_Triangulation.hxx>
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#include <BRepMesh_IncrementalMesh.hxx>
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#include <BRep_Tool.hxx>
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#include <BRep_Builder.hxx>
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#include <BRepBuilderAPI_MakeEdge.hxx>
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#include <Poly_Triangulation.hxx>
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#include <TopExp_Explorer.hxx>
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#include <TopoDS.hxx>
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#include <TopoDS_Compound.hxx>
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#include <TopoDS_Edge.hxx>
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#include <TopoDS_Face.hxx>
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#include <TopoDS_Shape.hxx>
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void TriangulationSamples::ExecuteSample (const TCollection_AsciiString& theSampleName)
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{
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Standard_Boolean anIsSamplePresent = Standard_True;
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FindSourceCode(theSampleName);
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if (theSampleName == "Triangulation3dSample")
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{
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Triangulation3dSample();
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}
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else
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{
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myResult << "No function found: " << theSampleName;
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myCode += TCollection_AsciiString("No function found: ") + theSampleName;
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anIsSamplePresent = Standard_False;
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}
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myIsProcessed = anIsSamplePresent;
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}
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void TriangulationSamples::Triangulation3dSample()
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{
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TopoDS_Shape aBottle = MakeBottle(50, 70, 30);
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BRepMesh_IncrementalMesh(aBottle, 1);
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BRep_Builder aBuilder;
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TopoDS_Compound aCompound;
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aBuilder.MakeCompound(aCompound);
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Standard_Integer aNbTriangles(0);
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for (TopExp_Explorer anExplorer(aBottle, TopAbs_FACE); anExplorer.More(); anExplorer.Next())
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{
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TopoDS_Face aFace = TopoDS::Face(anExplorer.Current());
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TopLoc_Location aLocation;
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Handle(Poly_Triangulation) aTriangulation = BRep_Tool::Triangulation(aFace, aLocation);
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TColgp_Array1OfPnt aTriangNodes(1, (aTriangulation->NbNodes()));
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aTriangNodes = aTriangulation->Nodes();
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Poly_Array1OfTriangle aTriangles(1, aTriangulation->NbTriangles());
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aTriangles = aTriangulation->Triangles();
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for (Standard_Integer i = 1; i <= (aTriangulation->NbTriangles()); i++)
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{
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Poly_Triangle trian = aTriangles.Value(i);
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Standard_Integer index1, index2, index3, M = 0, N = 0;
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trian.Get(index1, index2, index3);
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for (Standard_Integer j = 1; j <= 3; j++)
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{
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switch (j)
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{
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case 1:
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M = index1;
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N = index2;
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break;
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case 2:
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N = index3;
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break;
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case 3:
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M = index2;
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}
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BRepBuilderAPI_MakeEdge anEdgeMaker(aTriangNodes.Value(M), aTriangNodes.Value(N));
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if (anEdgeMaker.IsDone())
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{
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aBuilder.Add(aCompound, anEdgeMaker.Edge());
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}
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}
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}
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Handle(AIS_Triangulation) anAisTriangulation = new AIS_Triangulation(aTriangulation);
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aNbTriangles += aTriangulation->NbTriangles();
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myObject3d.Append(anAisTriangulation);
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}
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Handle(AIS_Shape) anAisCompound = new AIS_Shape(aCompound);
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myObject3d.Append(anAisCompound);
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Handle(AIS_Shape) AISBottle = new AIS_Shape(aBottle);
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myObject3d.Append(AISBottle);
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myResult << "Compute the triangulation on a shape: " << aNbTriangles;
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}
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