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78aade7569
Extend "proximity" command to be able to compute the proximity value; Implement classes for calculate proximity value between two shapes; Add possibility to set up the number of sample points for the input shapes; Add tests lowalgos/proximity.
150 lines
4.9 KiB
C++
150 lines
4.9 KiB
C++
// Created on: 2014-10-20
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// Created by: Denis BOGOLEPOV
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// Copyright (c) 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 <BRepExtrema_ShapeProximity.hxx>
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#include <Precision.hxx>
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#include <TopExp_Explorer.hxx>
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// Assign a map of sub-shapes (edges/faces) of a given shape
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static Standard_Boolean initSubShapes(const TopoDS_Shape& theShape,
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BRepExtrema_ShapeList& theSubshapesList,
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Handle(BRepExtrema_TriangleSet)& theTriangleSet)
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{
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theSubshapesList.Clear();
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for (TopExp_Explorer anIter(theShape, TopAbs_FACE); anIter.More(); anIter.Next())
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{
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theSubshapesList.Append(anIter.Current());
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}
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for (TopExp_Explorer anIter(theShape, TopAbs_EDGE); anIter.More(); anIter.Next())
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{
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theSubshapesList.Append(anIter.Current());
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}
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if (theTriangleSet.IsNull())
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theTriangleSet = new BRepExtrema_TriangleSet;
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return theTriangleSet->Init(theSubshapesList);
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}
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//=======================================================================
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//function : BRepExtrema_ShapeProximity
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//purpose : Creates uninitialized proximity tool
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//=======================================================================
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BRepExtrema_ShapeProximity::BRepExtrema_ShapeProximity (const Standard_Real theTolerance)
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: myTolerance (theTolerance),
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myElementSet1 (new BRepExtrema_TriangleSet),
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myElementSet2 (new BRepExtrema_TriangleSet),
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myNbSamples1 (0),
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myNbSamples2 (0)
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{
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// Should be initialized later
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myIsInitS1 = myIsInitS2 = Standard_False;
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}
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//=======================================================================
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//function : BRepExtrema_ShapeProximity
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//purpose : Creates proximity tool for the given two shapes
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//=======================================================================
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BRepExtrema_ShapeProximity::BRepExtrema_ShapeProximity (const TopoDS_Shape& theShape1,
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const TopoDS_Shape& theShape2,
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const Standard_Real theTolerance)
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: myTolerance (theTolerance),
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myElementSet1 (new BRepExtrema_TriangleSet),
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myElementSet2 (new BRepExtrema_TriangleSet),
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myNbSamples1 (0),
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myNbSamples2 (0)
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{
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LoadShape1 (theShape1);
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LoadShape2 (theShape2);
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}
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//=======================================================================
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//function : LoadShape1
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//purpose : Loads 1st shape into proximity tool
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//=======================================================================
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Standard_Boolean BRepExtrema_ShapeProximity::LoadShape1 (const TopoDS_Shape& theShape1)
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{
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myIsInitS1 = initSubShapes(theShape1, myShapeList1, myElementSet1);
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if (myTolerance == Precision::Infinite())
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{
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myProxValTool.MarkDirty();
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}
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else
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{
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myOverlapTool.MarkDirty();
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}
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return myIsInitS1;
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}
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//=======================================================================
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//function : LoadShape2
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//purpose : Loads 2nd shape into proximity tool
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//=======================================================================
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Standard_Boolean BRepExtrema_ShapeProximity::LoadShape2 (const TopoDS_Shape& theShape2)
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{
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myIsInitS2 = initSubShapes(theShape2, myShapeList2, myElementSet2);
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if (myTolerance == Precision::Infinite())
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{
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myProxValTool.MarkDirty();
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}
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else
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{
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myOverlapTool.MarkDirty();
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}
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return myIsInitS2;
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}
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//=======================================================================
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//function : Perform
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//purpose : Performs search of overlapped faces
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//=======================================================================
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void BRepExtrema_ShapeProximity::Perform()
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{
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if (myTolerance == Precision::Infinite())
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{
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if (!myIsInitS1 || !myIsInitS2 || myProxValTool.IsDone())
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{
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return;
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}
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myProxValTool.LoadTriangleSets (myElementSet1,
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myElementSet2);
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myProxValTool.LoadShapeLists (myShapeList1,
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myShapeList2);
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myProxValTool.Perform (myTolerance);
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myProxValTool.ProximityPoints(myProxPoint1, myProxPoint2);
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myProxValTool.ProximityPointsStatus (myProxPntStatus1, myProxPntStatus2);
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}
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else
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{
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if (!myIsInitS1 || !myIsInitS2 || myOverlapTool.IsDone())
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{
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return;
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}
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myOverlapTool.LoadTriangleSets (myElementSet1,
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myElementSet2);
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myOverlapTool.Perform (myTolerance);
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}
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}
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