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#include <ShapeFix_SplitCommonVertex.ixx>
#include <BRep_Tool.hxx>
#include <BRep_Builder.hxx>
#include <gp_Pnt.hxx>
#include <ShapeAnalysis_Edge.hxx>
#include <ShapeBuild_ReShape.hxx>
#include <ShapeBuild_Edge.hxx>
#include <ShapeExtend.hxx>
#include <ShapeExtend_WireData.hxx>
#include <TopExp_Explorer.hxx>
#include <TopoDS_Iterator.hxx>
#include <TopoDS.hxx>
#include <TopoDS_Face.hxx>
#include <TopoDS_Wire.hxx>
#include <TopoDS_Edge.hxx>
#include <TopoDS_Vertex.hxx>
#include <TopTools_SequenceOfShape.hxx>
#include <TopTools_DataMapOfShapeShape.hxx>
//=======================================================================
//function : ShapeFix_SplitCommonVertex
//purpose :
//=======================================================================
ShapeFix_SplitCommonVertex::ShapeFix_SplitCommonVertex()
{
myStatus = ShapeExtend::EncodeStatus ( ShapeExtend_OK );
SetPrecision(Precision::Confusion());
}
//=======================================================================
//function : Init
//purpose :
//=======================================================================
void ShapeFix_SplitCommonVertex::Init(const TopoDS_Shape& S)
{
myShape = S;
if ( Context().IsNull() )
SetContext ( new ShapeBuild_ReShape );
myResult = myShape;
Context()->Apply(myShape);
}
//=======================================================================
//function : Perform
//purpose :
//=======================================================================
void ShapeFix_SplitCommonVertex::Perform()
{
TopAbs_ShapeEnum st = myShape.ShapeType();
if(st>TopAbs_FACE) return;
for(TopExp_Explorer itf(myShape,TopAbs_FACE); itf.More(); itf.Next()) {
TopoDS_Shape tmpFace = Context()->Apply(itf.Current());
TopoDS_Face F = TopoDS::Face(tmpFace);
if(F.IsNull()) continue;
// analys face and split if necessary
TopTools_SequenceOfShape wires;
for(TopoDS_Iterator itw(F,Standard_False); itw.More(); itw.Next()) {
if(itw.Value().ShapeType() != TopAbs_WIRE)
continue;
wires.Append(itw.Value());
}
if(wires.Length()<2) continue;
TopTools_DataMapOfShapeShape MapVV;
MapVV.Clear();
for(Standard_Integer nw1=1; nw1<wires.Length(); nw1++) {
TopoDS_Wire w1 = TopoDS::Wire(wires.Value(nw1));
Handle(ShapeExtend_WireData) sewd1 = new ShapeExtend_WireData(w1);
for(Standard_Integer nw2=nw1+1; nw2<=wires.Length(); nw2++) {
TopoDS_Wire w2 = TopoDS::Wire(wires.Value(nw2));
Handle(ShapeExtend_WireData) sewd2 = new ShapeExtend_WireData(w2);
for(TopExp_Explorer expv1(w1,TopAbs_VERTEX); expv1.More(); expv1.Next()) {
TopoDS_Vertex V1 = TopoDS::Vertex(expv1.Current());
for(TopExp_Explorer expv2(w2,TopAbs_VERTEX); expv2.More(); expv2.Next()) {
TopoDS_Vertex V2 = TopoDS::Vertex(expv2.Current());
if(V1==V2) {
// common vertex exists
TopoDS_Vertex Vnew;
if(MapVV.IsBound(V2)) {
Vnew = TopoDS::Vertex(MapVV.Find(V2));
}
else {
gp_Pnt P = BRep_Tool::Pnt(V2);
Standard_Real tol = BRep_Tool::Tolerance(V2);
BRep_Builder B;
B.MakeVertex(Vnew,P,tol);
MapVV.Bind(V2,Vnew);
}
ShapeBuild_Edge sbe;
ShapeAnalysis_Edge sae;
for(Standard_Integer ne2=1; ne2<=sewd2->NbEdges(); ne2++) {
TopoDS_Edge E = sewd2->Edge(ne2);
TopoDS_Vertex FV = sae.FirstVertex(E);
TopoDS_Vertex LV = sae.LastVertex(E);
Standard_Boolean IsCoinc = Standard_False;
if(FV==V2) {
FV=Vnew;
IsCoinc = Standard_True;
}
if(LV==V2) {
LV=Vnew;
IsCoinc = Standard_True;
}
if(IsCoinc) {
TopoDS_Edge NewE = sbe.CopyReplaceVertices(E,FV,LV);
Context()->Replace(E,NewE);
}
}
}
}
}
}
}
}
myShape = Context()->Apply(myShape);
}
//=======================================================================
//function : Shape
//purpose :
//=======================================================================
TopoDS_Shape ShapeFix_SplitCommonVertex::Shape()
{
return myShape;
}
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