opencascade如何用一个面裁剪另外一个面

opencascade如何用一个面裁剪另外一个面

void trim_plane_by_plane_2(TopoDS_Shape aS1, TopoDS_Shape aS2)
{
    BRepAlgoAPI_Section sec(aS1, aS2, false);
    sec.ComputePCurveOn1(true);
    sec.Approximation(true);
    sec.Build();
    TopoDS_Shape aInterCurve = sec.Shape();
    TopoDS_Face aFace = TopoDS::Face(aS1);

    BRepFeat_SplitShape ssplit(aS1);
    TopExp_Explorer ex;
    for (ex.Init(aInterCurve, TopAbs_EDGE, TopAbs_SHAPE); ex.More(); ex.Next())

    {
        TopoDS_Edge aE = TopoDS::Edge(ex.Current());
        TopoDS_Shape aF;
        if (sec.HasAncestorFaceOn1(aE, aF))
        {
            TopoDS_Face aAncFace = TopoDS::Face(aF);
            if (aAncFace.IsSame(aFace))
                ssplit.Add(aE, aFace);
        }
    }
    ssplit.Build();
    TopTools_ListOfShape shapeList = ssplit.Modified(aFace);
    TopTools_ListIteratorOfListOfShape ite(shapeList);
    for (; ite.More(); ite.Next())
    {
        TopoDS_Shape aS = ite.Value();
        Handle(AIS_Shape) aiss = new AIS_Shape(aS);
        m_context->Display(aiss, true);
    }
}

opencascade如何用一个面裁剪另外一个面（2）

原文链接

void split_plane_by_plane(TopoDS_Shape tool_face, TopoDS_Shape object_tool)
{
    // Build section by the split plane for the cylinder.
    BRepAlgoAPI_Section aSection(object_tool, tool_face, Standard_False);
    aSection.ComputePCurveOn1(Standard_True);
    aSection.Approximation(Standard_True);
    aSection.Build();

    // Split the cylinder shape.
    BRepFeat_SplitShape aShapeSpliter(object_tool);
    for (TopExp_Explorer i(aSection.Shape(), TopAbs_EDGE); i.More(); i.Next())
    {
        TopoDS_Shape anEdge = i.Current();
        TopoDS_Shape aFace;
        if (aSection.HasAncestorFaceOn1(anEdge, aFace))
        {
            TopoDS_Edge E = TopoDS::Edge(anEdge);
            TopoDS_Face F = TopoDS::Face(aFace);
            aShapeSpliter.Add(E, F);
        }
    }
    aShapeSpliter.Build();

    // Rebuild left and right shape.
    BRep_Builder aBuilder;
    TopoDS_Compound aLeftCompound;
    TopoDS_Compound aRightCompound;

    aBuilder.MakeCompound(aLeftCompound);
    aBuilder.MakeCompound(aRightCompound);

    // Left shape.
    TopTools_MapOfShape aLeftShapeMap;
    const TopTools_ListOfShape& aLeftShapes = aShapeSpliter.Left();
    for (auto i = aLeftShapes.cbegin(); i != aLeftShapes.cend(); i++)
    {
        aLeftShapeMap.Add(*i);
        aBuilder.Add(aLeftCompound, *i);
        display(aLeftCompound);
    }

    // Right shape.
    TopTools_IndexedMapOfShape aShapeMap;
    TopExp::MapShapes(aShapeSpliter.Shape(), TopAbs_FACE, aShapeMap);

    for (auto i = aShapeMap.cbegin(); i != aShapeMap.cend(); i++)
    {
        if (!aLeftShapeMap.Contains(*i))
        {
            aBuilder.Add(aRightCompound, *i);
            display(aRightCompound);
        }
    }
}

 

 

opencascade如何用一个面裁剪另外一个面（2）_hasancestorfaceon1-CSDN博客

voidsplit_plane_by_plane(TopoDS_Shape tool_face, TopoDS_Shape object_tool){// Build section by the split plane for the cylinder. BRepAlgoAPI_Section aSection(object_tool, tool_face, Standard_False); aSection.ComputePCurveOn1(Standard_True); aSection.Approximation(Standard_True); aSection.Build();// Split the cylinder shape. BRepFeat_SplitShape aShapeSpliter(object_tool);for(TopExp_Explorer i(aSection.Shape(), TopAbs_EDGE); i.More(); i.Next()){ TopoDS_Shape anEdge = i.Current(); TopoDS_Shape aFace;if(aSection.HasAncestorFaceOn1(anEdge, aFace)){ TopoDS_Edge E = TopoDS::Edge(anEdge); TopoDS_Face F = TopoDS::Face(aFace); aShapeSpliter.Add(E, F);}} aShapeSpliter.Build();// Rebuild left and right shape. BRep_Builder aBuilder; TopoDS_Compound aLeftCompound; TopoDS_Compound aRightCompound; aBuilder.MakeCompound(aLeftCompound); aBuilder.MakeCompound(aRightCompound);// Left shape. TopTools_MapOfShape aLeftShapeMap;const TopTools_ListOfShape& aLeftShapes = aShapeSpliter.Left();for(auto i = aLeftShapes.cbegin(); i != aLeftShapes.cend(); i++){ aLeftShapeMap.Add(*i); aBuilder.Add(aLeftCompound,*i);display(aLeftCompound);}// Right shape. TopTools_IndexedMapOfShape aShapeMap; TopExp::MapShapes(aShapeSpliter.Shape(), TopAbs_FACE, aShapeMap);for(auto i = aShapeMap.cbegin(); i != aShapeMap.cend(); i++){if(!aLeftShapeMap.Contains(*i)){ aBuilder.Add(aRightCompound,*i);display(aRightCompound);}}}