783 lines
17 KiB
C++
783 lines
17 KiB
C++
|
#include "Stdafx.h"
|
|||
|
|
#include <vector>
|
|||
|
|
#include <algorithm>
|
|||
|
|
#include <TopExp.hxx>
|
|||
|
|
#include <Precision.hxx>
|
|||
|
|
#include <ShapeAlgo.hxx>
|
|||
|
|
#include <BRepTools.hxx>
|
|||
|
|
//#include <Bnd_SeqOfBox.hxx>
|
|||
|
|
#include <BRepBndLib.hxx>
|
|||
|
|
#include <BRepExtrema_DistShapeShape.hxx>
|
|||
|
|
#include <TopTools_ListIteratorOfListOfShape.hxx>
|
|||
|
|
#include <ShapeAlgo.hxx>
|
|||
|
|
#include <TopTools_SequenceOfShape.hxx>
|
|||
|
|
#include <TopTools_DataMapOfShapeListOfShape.hxx>
|
|||
|
|
#include <TopTools_DataMapIteratorOfDataMapOfShapeListOfShape.hxx>
|
|||
|
|
|
|||
|
|
#include <ShapeAlgo_AlgoContainer.hxx>
|
|||
|
|
|
|||
|
|
#include <BRepBuilderAPI_FindPlane.hxx>
|
|||
|
|
#include <BRepTopAdaptor_FClass2d.hxx>
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
#include "ScBRepLib.h"
|
|||
|
|
|
|||
|
|
|
|||
|
|
ScBRepLib::ScBRepLib(void)
|
|||
|
|
{
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
ScBRepLib::~ScBRepLib(void)
|
|||
|
|
{
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
//辅助函数
|
|||
|
|
BOOL ScBRepLib::IsVertex(const TopoDS_Shape& aS)
|
|||
|
|
{
|
|||
|
|
return (!aS.IsNull() && (aS.ShapeType() == TopAbs_VERTEX));
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
BOOL ScBRepLib::IsEdge(const TopoDS_Shape& aS)
|
|||
|
|
{
|
|||
|
|
return (!aS.IsNull() && (aS.ShapeType() == TopAbs_EDGE));
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
BOOL ScBRepLib::IsWire(const TopoDS_Shape& aS)
|
|||
|
|
{
|
|||
|
|
return (!aS.IsNull() && (aS.ShapeType() == TopAbs_WIRE));
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
BOOL ScBRepLib::IsFace(const TopoDS_Shape& aS)
|
|||
|
|
{
|
|||
|
|
return (!aS.IsNull() && (aS.ShapeType() == TopAbs_FACE));
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
BOOL ScBRepLib::IsShell(const TopoDS_Shape& aS)
|
|||
|
|
{
|
|||
|
|
return (!aS.IsNull() && (aS.ShapeType() == TopAbs_SHELL));
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
BOOL ScBRepLib::IsSolid(const TopoDS_Shape& aS)
|
|||
|
|
{
|
|||
|
|
return (!aS.IsNull() && (aS.ShapeType() == TopAbs_SOLID));
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
BOOL ScBRepLib::IsCompound(const TopoDS_Shape& aS)
|
|||
|
|
{
|
|||
|
|
return (!aS.IsNull() && (aS.ShapeType() == TopAbs_COMPOUND));
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
BOOL ScBRepLib::IsCompSolid(const TopoDS_Shape& aS)
|
|||
|
|
{
|
|||
|
|
return (!aS.IsNull() && (aS.ShapeType() == TopAbs_COMPSOLID));
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
//将一条edge分割为两条
|
|||
|
|
BOOL ScBRepLib::SplitEdge(const TopoDS_Edge& aEdge,double t,
|
|||
|
|
TopoDS_Edge& aE1,TopoDS_Edge& aE2)
|
|||
|
|
{
|
|||
|
|
if(aEdge.IsNull())
|
|||
|
|
return FALSE;
|
|||
|
|
|
|||
|
|
double df,dl;
|
|||
|
|
Handle(Geom_Curve) aCur = BRep_Tool::Curve(aEdge,df,dl);
|
|||
|
|
if(aCur.IsNull())
|
|||
|
|
return FALSE;
|
|||
|
|
|
|||
|
|
if(df > dl)
|
|||
|
|
{
|
|||
|
|
double tmp = df;dl = df;df = tmp;
|
|||
|
|
}
|
|||
|
|
double dtol = 1e-6;
|
|||
|
|
if(t - dtol < df || t + dtol > dl)
|
|||
|
|
{
|
|||
|
|
return FALSE;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
//创建两个新的edge
|
|||
|
|
try
|
|||
|
|
{
|
|||
|
|
aE1 = BRepBuilderAPI_MakeEdge(aCur,df,t);
|
|||
|
|
aE2 = BRepBuilderAPI_MakeEdge(aCur,t,dl);
|
|||
|
|
if(aE1.IsNull() || aE2.IsNull())
|
|||
|
|
return FALSE;
|
|||
|
|
}
|
|||
|
|
catch (Standard_Failure)
|
|||
|
|
{
|
|||
|
|
return FALSE;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
return TRUE;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
//用一条edge分割另一条edge,新edge保存在list中，返回新edge的个数
|
|||
|
|
int ScBRepLib::SplitEdgeByEdge(const TopoDS_Edge& aE1,const TopoDS_Edge& aE2,
|
|||
|
|
TopTools_ListOfShape& shapeList)
|
|||
|
|
{
|
|||
|
|
int nC = 0;
|
|||
|
|
std::vector<double> arpars;//交点参数列表
|
|||
|
|
|
|||
|
|
//为每段生成一个新的edge。
|
|||
|
|
double df,dl;
|
|||
|
|
Handle(Geom_Curve) aCur = BRep_Tool::Curve(aE1,df,dl);
|
|||
|
|
if(aCur.IsNull())
|
|||
|
|
return FALSE;
|
|||
|
|
|
|||
|
|
if(df > dl)
|
|||
|
|
{
|
|||
|
|
double tmp = df;dl = df;df = tmp;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
//求交
|
|||
|
|
BRepExtrema_DistShapeShape dss(aE1,aE2);
|
|||
|
|
try{
|
|||
|
|
dss.Perform();
|
|||
|
|
}catch(Standard_Failure){
|
|||
|
|
return 0;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
nC = dss.NbSolution();
|
|||
|
|
if(nC == 0)
|
|||
|
|
return 0;
|
|||
|
|
|
|||
|
|
arpars.push_back(df);
|
|||
|
|
int iC = 0;
|
|||
|
|
gp_Pnt p1,p2;
|
|||
|
|
//依次获取参数
|
|||
|
|
for(int ix = 1;ix <= nC;ix ++)
|
|||
|
|
{
|
|||
|
|
double t ;
|
|||
|
|
if(dss.SupportTypeShape1(ix) == BRepExtrema_IsOnEdge)
|
|||
|
|
{
|
|||
|
|
//要判断一下距离
|
|||
|
|
p1 = dss.PointOnShape1(ix);
|
|||
|
|
p2 = dss.PointOnShape2(ix);
|
|||
|
|
if(p1.Distance(p2) < Precision::Confusion())
|
|||
|
|
{
|
|||
|
|
dss.ParOnEdgeS1(ix,t);
|
|||
|
|
arpars.push_back(t);
|
|||
|
|
iC ++;
|
|||
|
|
}
|
|||
|
|
else
|
|||
|
|
{
|
|||
|
|
//DTRACE("\n extrema point,not interpnt");
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
arpars.push_back(dl);
|
|||
|
|
|
|||
|
|
if(iC == 0)
|
|||
|
|
return 0;
|
|||
|
|
|
|||
|
|
//排序
|
|||
|
|
std::sort(arpars.begin(),arpars.end());
|
|||
|
|
|
|||
|
|
//为没对参数间生成一个edge
|
|||
|
|
double t1,t2;
|
|||
|
|
TopoDS_Edge aNE;
|
|||
|
|
nC = 0;
|
|||
|
|
for(int ix = 0;ix < arpars.size() - 1;ix ++)
|
|||
|
|
{
|
|||
|
|
t1 = arpars.at(ix);
|
|||
|
|
t2 = arpars.at(ix + 1);
|
|||
|
|
if(fabs(t1 - t2) < 1e-6)
|
|||
|
|
continue;
|
|||
|
|
aNE = BRepBuilderAPI_MakeEdge(aCur,t1,t2);
|
|||
|
|
if(!aNE.IsNull())
|
|||
|
|
{
|
|||
|
|
//注意方向，保证新分割edge的顺序和edge的方向一致
|
|||
|
|
if(aE1.Orientation() == TopAbs_FORWARD)
|
|||
|
|
shapeList.Append(aNE);
|
|||
|
|
else
|
|||
|
|
shapeList.Prepend(aNE);
|
|||
|
|
nC ++;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
return nC;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
//用一条edge分割一个wire。新shape保存在list中，返回新shape的个数
|
|||
|
|
int ScBRepLib::SplitWireByEdge(const TopoDS_Wire& aWire,const TopoDS_Edge& aEdge,
|
|||
|
|
TopTools_ListOfShape& shapeList)
|
|||
|
|
{
|
|||
|
|
if(aWire.IsNull() || aEdge.IsNull())
|
|||
|
|
return 0;
|
|||
|
|
|
|||
|
|
int nC = 0,iC = 0,nNewC = 0;
|
|||
|
|
TopTools_ListOfShape tmplist,wlist;
|
|||
|
|
TopoDS_Wire aW;
|
|||
|
|
TopExp_Explorer ex;
|
|||
|
|
|
|||
|
|
//依次剖分wire中的edge，并进行必要的连接。
|
|||
|
|
for(ex.Init(aWire,TopAbs_EDGE);ex.More();ex.Next())
|
|||
|
|
{
|
|||
|
|
TopoDS_Edge aE = TopoDS::Edge(ex.Current());
|
|||
|
|
|
|||
|
|
tmplist.Clear();
|
|||
|
|
nC = ScBRepLib::SplitEdgeByEdge(aE,aEdge,tmplist);
|
|||
|
|
if(nC == 0)//没有新的edge
|
|||
|
|
{
|
|||
|
|
wlist.Append(aE);
|
|||
|
|
}
|
|||
|
|
else
|
|||
|
|
{
|
|||
|
|
TopTools_ListIteratorOfListOfShape ll(wlist);
|
|||
|
|
BRepBuilderAPI_MakeWire mw;
|
|||
|
|
for(;ll.More();ll.Next())
|
|||
|
|
mw.Add(TopoDS::Edge(ll.Value()));
|
|||
|
|
wlist.Clear();
|
|||
|
|
|
|||
|
|
//从新分割edge中找到和aW相邻的edge，并记录另一端的edge，该edge
|
|||
|
|
//和后续的edge相邻。
|
|||
|
|
iC = 0;
|
|||
|
|
TopTools_ListIteratorOfListOfShape ite(tmplist);
|
|||
|
|
for(;ite.More();ite.Next())
|
|||
|
|
{
|
|||
|
|
if(iC == 0)
|
|||
|
|
{
|
|||
|
|
mw.Add(TopoDS::Edge(ite.Value()));
|
|||
|
|
aW = mw.Wire();
|
|||
|
|
if(!aW.IsNull())
|
|||
|
|
{
|
|||
|
|
nNewC ++;
|
|||
|
|
shapeList.Append(aW);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
else if(iC == nC - 1)
|
|||
|
|
{
|
|||
|
|
wlist.Append(ite.Value());
|
|||
|
|
}
|
|||
|
|
else
|
|||
|
|
{
|
|||
|
|
nNewC ++;
|
|||
|
|
shapeList.Append(ite.Value());//新的edge
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
iC ++;
|
|||
|
|
}//end for
|
|||
|
|
}//end else
|
|||
|
|
}//end for
|
|||
|
|
if(wlist.Extent() > 0)
|
|||
|
|
{
|
|||
|
|
TopTools_ListIteratorOfListOfShape ll(wlist);
|
|||
|
|
BRepBuilderAPI_MakeWire mw;
|
|||
|
|
for(;ll.More();ll.Next())
|
|||
|
|
mw.Add(TopoDS::Edge(ll.Value()));
|
|||
|
|
TopoDS_Wire aW = mw.Wire();
|
|||
|
|
if(!aW.IsNull())
|
|||
|
|
{
|
|||
|
|
nNewC ++;
|
|||
|
|
shapeList.Append(aW);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
return nNewC;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
//用一条wire分割一个edge。
|
|||
|
|
int ScBRepLib::SplitEdgeByWire(const TopoDS_Edge& aEdge,const TopoDS_Wire& aWire,
|
|||
|
|
TopTools_ListOfShape& shapeList)
|
|||
|
|
{
|
|||
|
|
int nC = 0,iC;
|
|||
|
|
std::vector<double> arpars;//交点参数列表
|
|||
|
|
|
|||
|
|
//为每段生成一个新的edge。
|
|||
|
|
double df,dl;
|
|||
|
|
Handle(Geom_Curve) aCur = BRep_Tool::Curve(aEdge,df,dl);
|
|||
|
|
if(aCur.IsNull())
|
|||
|
|
return FALSE;
|
|||
|
|
|
|||
|
|
if(df > dl)
|
|||
|
|
{
|
|||
|
|
double tmp = df;dl = df;df = tmp;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
arpars.push_back(df);
|
|||
|
|
|
|||
|
|
double t;
|
|||
|
|
gp_Pnt p1,p2;
|
|||
|
|
TopExp_Explorer ex;
|
|||
|
|
|
|||
|
|
iC = 0;
|
|||
|
|
for(ex.Init(aWire,TopAbs_EDGE);ex.More();ex.Next())
|
|||
|
|
{
|
|||
|
|
TopoDS_Edge aE = TopoDS::Edge(ex.Current());
|
|||
|
|
|
|||
|
|
//求交
|
|||
|
|
BRepExtrema_DistShapeShape dss(aEdge,aE);
|
|||
|
|
try{
|
|||
|
|
dss.Perform();
|
|||
|
|
}catch(Standard_Failure){
|
|||
|
|
continue;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
//获取交点
|
|||
|
|
for(int ix = 1;ix <= dss.NbSolution();ix ++)
|
|||
|
|
{
|
|||
|
|
if(dss.SupportTypeShape1(ix) == BRepExtrema_IsOnEdge)
|
|||
|
|
{
|
|||
|
|
//要判断一下距离
|
|||
|
|
p1 = dss.PointOnShape1(ix);
|
|||
|
|
p2 = dss.PointOnShape2(ix);
|
|||
|
|
if(p1.Distance(p2) < Precision::Confusion())
|
|||
|
|
{
|
|||
|
|
dss.ParOnEdgeS1(ix,t);
|
|||
|
|
arpars.push_back(t);
|
|||
|
|
iC ++;
|
|||
|
|
}
|
|||
|
|
else
|
|||
|
|
{
|
|||
|
|
//DTRACE("\n extrema point,not interpnt");
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
if(iC == 0)
|
|||
|
|
return 0;//无交点
|
|||
|
|
|
|||
|
|
arpars.push_back(dl);
|
|||
|
|
std::sort(arpars.begin(),arpars.end());
|
|||
|
|
|
|||
|
|
//生成新的edge
|
|||
|
|
double t1,t2;
|
|||
|
|
TopoDS_Edge aNE;
|
|||
|
|
nC = 0;
|
|||
|
|
for(int ix = 0;ix < arpars.size() - 1;ix ++)
|
|||
|
|
{
|
|||
|
|
t1 = arpars.at(ix);
|
|||
|
|
t2 = arpars.at(ix + 1);
|
|||
|
|
if(fabs(t1 - t2) < 1e-6)
|
|||
|
|
continue;
|
|||
|
|
aNE = BRepBuilderAPI_MakeEdge(aCur,t1,t2);
|
|||
|
|
if(!aNE.IsNull())
|
|||
|
|
{
|
|||
|
|
//注意方向，保证新分割edge的顺序和edge的方向一致
|
|||
|
|
if(aEdge.Orientation() == TopAbs_FORWARD)
|
|||
|
|
shapeList.Append(aNE);
|
|||
|
|
else
|
|||
|
|
shapeList.Prepend(aNE);
|
|||
|
|
nC ++;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
return nC;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
//用一个wire分割另一个wire
|
|||
|
|
int ScBRepLib::SplitWireByWire(const TopoDS_Wire& aW1,const TopoDS_Wire& aW2,
|
|||
|
|
TopTools_ListOfShape& shapeList)
|
|||
|
|
{
|
|||
|
|
if(aW1.IsNull() || aW2.IsNull())
|
|||
|
|
return 0;
|
|||
|
|
|
|||
|
|
int nC = 0,iC = 0,nNewC = 0;
|
|||
|
|
TopTools_ListOfShape tmplist,wlist;
|
|||
|
|
TopoDS_Wire aW;
|
|||
|
|
TopExp_Explorer ex;
|
|||
|
|
|
|||
|
|
//依次剖分wire中的edge，并进行必要的连接。
|
|||
|
|
for(ex.Init(aW1,TopAbs_EDGE);ex.More();ex.Next())
|
|||
|
|
{
|
|||
|
|
TopoDS_Edge aE = TopoDS::Edge(ex.Current());
|
|||
|
|
|
|||
|
|
tmplist.Clear();
|
|||
|
|
nC = ScBRepLib::SplitEdgeByWire(aE,aW2,tmplist);
|
|||
|
|
if(nC == 0)//没有新的edge
|
|||
|
|
{
|
|||
|
|
wlist.Append(aE);
|
|||
|
|
}
|
|||
|
|
else
|
|||
|
|
{
|
|||
|
|
TopTools_ListIteratorOfListOfShape ll(wlist);
|
|||
|
|
BRepBuilderAPI_MakeWire mw;
|
|||
|
|
for(;ll.More();ll.Next())
|
|||
|
|
mw.Add(TopoDS::Edge(ll.Value()));
|
|||
|
|
wlist.Clear();
|
|||
|
|
|
|||
|
|
//从新分割edge中找到和aW相邻的edge，并记录另一端的edge，该edge
|
|||
|
|
//和后续的edge相邻。
|
|||
|
|
iC = 0;
|
|||
|
|
TopTools_ListIteratorOfListOfShape ite(tmplist);
|
|||
|
|
for(;ite.More();ite.Next())
|
|||
|
|
{
|
|||
|
|
if(iC == 0)
|
|||
|
|
{
|
|||
|
|
mw.Add(TopoDS::Edge(ite.Value()));
|
|||
|
|
aW = mw.Wire();
|
|||
|
|
if(!aW.IsNull())
|
|||
|
|
{
|
|||
|
|
nNewC ++;
|
|||
|
|
shapeList.Append(aW);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
else if(iC == nC - 1)
|
|||
|
|
{
|
|||
|
|
wlist.Append(ite.Value());
|
|||
|
|
}
|
|||
|
|
else
|
|||
|
|
{
|
|||
|
|
nNewC ++;
|
|||
|
|
shapeList.Append(ite.Value());//新的edge
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
iC ++;
|
|||
|
|
}//end for
|
|||
|
|
}//end else
|
|||
|
|
}//end for
|
|||
|
|
if(wlist.Extent() > 0)
|
|||
|
|
{
|
|||
|
|
TopTools_ListIteratorOfListOfShape ll(wlist);
|
|||
|
|
BRepBuilderAPI_MakeWire mw;
|
|||
|
|
for(;ll.More();ll.Next())
|
|||
|
|
mw.Add(TopoDS::Edge(ll.Value()));
|
|||
|
|
TopoDS_Wire aW = mw.Wire();
|
|||
|
|
if(!aW.IsNull())
|
|||
|
|
{
|
|||
|
|
nNewC ++;
|
|||
|
|
shapeList.Append(aW);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
return nNewC;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
//edge和wire是否相连
|
|||
|
|
BOOL ScBRepLib::IsConnected(const TopoDS_Wire& aW,const TopoDS_Edge& aE)
|
|||
|
|
{
|
|||
|
|
if(aW.IsNull() || aE.IsNull())
|
|||
|
|
return FALSE;
|
|||
|
|
|
|||
|
|
TopoDS_Vertex v1,v2,v3,v4;
|
|||
|
|
TopExp::Vertices(aE,v1,v2);
|
|||
|
|
TopExp::Vertices(aW,v3,v4);
|
|||
|
|
gp_Pnt p1,p2,p3,p4;
|
|||
|
|
p1 = BRep_Tool::Pnt(v1);
|
|||
|
|
p2 = BRep_Tool::Pnt(v2);
|
|||
|
|
p3 = BRep_Tool::Pnt(v3);
|
|||
|
|
p4 = BRep_Tool::Pnt(v4);
|
|||
|
|
double dTol = Precision::Confusion();
|
|||
|
|
if(p1.Distance(p3) < dTol || p1.Distance(p4) < dTol ||
|
|||
|
|
p2.Distance(p3) < dTol || p2.Distance(p4) < dTol)
|
|||
|
|
return TRUE;
|
|||
|
|
|
|||
|
|
return FALSE;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
//使用BRepTools::OuterWire的代码，略作修改。
|
|||
|
|
TopoDS_Wire ScBRepLib::OuterWire(const TopoDS_Face& aFace)
|
|||
|
|
{
|
|||
|
|
TopoDS_Wire Wres;
|
|||
|
|
TopExp_Explorer expw (aFace,TopAbs_WIRE);
|
|||
|
|
BOOL bOverlap = FALSE;//是否包围盒相互覆盖
|
|||
|
|
|
|||
|
|
if (expw.More())
|
|||
|
|
{
|
|||
|
|
Wres = TopoDS::Wire(expw.Current());
|
|||
|
|
expw.Next();
|
|||
|
|
if (expw.More())
|
|||
|
|
{
|
|||
|
|
Standard_Real UMin, UMax, VMin, VMax;
|
|||
|
|
Standard_Real umin, umax, vmin, vmax;
|
|||
|
|
BRepTools::UVBounds(aFace,Wres,UMin,UMax,VMin,VMax);
|
|||
|
|
while (expw.More())
|
|||
|
|
{
|
|||
|
|
const TopoDS_Wire& W = TopoDS::Wire(expw.Current());
|
|||
|
|
BRepTools::UVBounds(aFace,W,umin, umax, vmin, vmax);
|
|||
|
|
//如下简单判断范围可能不行，例如：一个大的外wire和一个小的wire，当小环很
|
|||
|
|
//贴近大环时，由于包围盒算法，可能导致两种包围盒重叠，导致错误的选择。
|
|||
|
|
//下面算法适用于好的情况。
|
|||
|
|
if ((umin <= UMin) &&
|
|||
|
|
(umax >= UMax) &&
|
|||
|
|
(vmin <= VMin) &&
|
|||
|
|
(vmax >= VMax))
|
|||
|
|
{//w包围盒包围了记录的包围盒。
|
|||
|
|
Wres = W;
|
|||
|
|
UMin = umin;
|
|||
|
|
UMax = umax;
|
|||
|
|
VMin = vmin;
|
|||
|
|
VMax = vmax;
|
|||
|
|
}
|
|||
|
|
else
|
|||
|
|
{
|
|||
|
|
//判断是否重叠
|
|||
|
|
if(umin > UMax || umax < UMin || vmin > VMax || vmax < VMin)
|
|||
|
|
{//不可能重叠
|
|||
|
|
}
|
|||
|
|
else
|
|||
|
|
{
|
|||
|
|
//如果一个区间在另一个区间内，则d1,d2应当异号。
|
|||
|
|
double Ud1 = UMax - umax,Ud2 = UMin - umin;
|
|||
|
|
double Vd1 = VMax - vmax,Vd2 = VMin - vmin;
|
|||
|
|
if((Ud1 * Ud2 >= 0.0) && (Vd1 * Vd2 > 0.0) ||
|
|||
|
|
(Ud1 * Ud2 > 0.0) && (Vd1 * Vd2 >= 0.0))
|
|||
|
|
{
|
|||
|
|
// DTRACE("\n wire overlap [%f,%f]*[%f,%f] ps [%f,%f]*[%f,%f]",
|
|||
|
|
// umin,umax,vmin,vmax,UMin,UMax,VMin,VMax);
|
|||
|
|
bOverlap = TRUE;
|
|||
|
|
break;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
expw.Next();
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
if(!bOverlap)
|
|||
|
|
{
|
|||
|
|
return Wres;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
//重叠使用另一个算法
|
|||
|
|
TopoDS_Wire aOWire;
|
|||
|
|
try
|
|||
|
|
{
|
|||
|
|
aOWire = ShapeAlgo::AlgoContainer()->OuterWire(aFace);//Note:aFace 出现异常???
|
|||
|
|
}
|
|||
|
|
catch(Standard_Failure)
|
|||
|
|
{
|
|||
|
|
aOWire = Wres;//返回先前的。
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
return aOWire;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
//根据一系列wire,创建平面face.wire不相交,可能相互包含.主要用于从文字轮廓
|
|||
|
|
//生成一系列平面.
|
|||
|
|
int ScBRepLib::BuildPlnFace(TopTools_ListOfShape& aWList,TopTools_ListOfShape& aFList)
|
|||
|
|
{
|
|||
|
|
int nFs = 0;
|
|||
|
|
|
|||
|
|
//先根据包围盒,判断是否相互包含.
|
|||
|
|
NCollection_Sequence<Bnd_Box> seqBox;
|
|||
|
|
//Bnd_SeqOfBox seqBox;
|
|||
|
|
Bnd_Box bb;
|
|||
|
|
TopTools_SequenceOfShape seqW,seqAlone;
|
|||
|
|
TopTools_ListIteratorOfListOfShape its(aWList);
|
|||
|
|
for(;its.More();its.Next())
|
|||
|
|
{
|
|||
|
|
TopoDS_Wire aW = TopoDS::Wire(its.Value());
|
|||
|
|
BRepBndLib::Add(aW,bb);
|
|||
|
|
seqBox.Append(bb);
|
|||
|
|
seqW.Append(aW);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
TopTools_DataMapOfShapeListOfShape mSS;//记录了包含关系,key的shape包含了list中的shape.
|
|||
|
|
for(int ix = 1;ix <= seqW.Length();ix ++)
|
|||
|
|
{
|
|||
|
|
TopoDS_Wire aW1 = TopoDS::Wire(seqW.Value(ix));
|
|||
|
|
const Bnd_Box& bb1 = seqBox.Value(ix);
|
|||
|
|
|
|||
|
|
BOOL bInter = FALSE;
|
|||
|
|
for(int jx = 1;jx <= seqW.Length();jx ++)
|
|||
|
|
{
|
|||
|
|
if(ix == jx)
|
|||
|
|
continue;
|
|||
|
|
|
|||
|
|
TopoDS_Wire aW2 = TopoDS::Wire(seqW.Value(jx));
|
|||
|
|
const Bnd_Box& bb2 = seqBox.Value(jx);
|
|||
|
|
|
|||
|
|
if(bb1.IsOut(bb2) && bb2.IsOut(bb1))
|
|||
|
|
{
|
|||
|
|
continue;
|
|||
|
|
}
|
|||
|
|
else
|
|||
|
|
{
|
|||
|
|
//相交,判断两者的关系.先1后2,和先2后1.注意:包围盒相交甚至包含,但wire本身可能不相交
|
|||
|
|
if(ScBRepLib::IsWire2InWire1(aW1,aW2))
|
|||
|
|
{
|
|||
|
|
if(!mSS.IsBound(aW1))
|
|||
|
|
{
|
|||
|
|
TopTools_ListOfShape aList;
|
|||
|
|
mSS.Bind(aW1,aList);
|
|||
|
|
}
|
|||
|
|
BOOL bF = FALSE;
|
|||
|
|
TopTools_ListIteratorOfListOfShape lit;
|
|||
|
|
for(lit.Initialize(mSS.Find(aW1));lit.More();lit.Next())
|
|||
|
|
{
|
|||
|
|
if(aW2.IsEqual(lit.Value()))
|
|||
|
|
{
|
|||
|
|
bF = TRUE;
|
|||
|
|
break;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
if(!bF)
|
|||
|
|
mSS.ChangeFind(aW1).Append(aW2);
|
|||
|
|
bInter = TRUE;
|
|||
|
|
}
|
|||
|
|
else if(ScBRepLib::IsWire2InWire1(aW2,aW1))
|
|||
|
|
{
|
|||
|
|
if(!mSS.IsBound(aW2))
|
|||
|
|
{
|
|||
|
|
TopTools_ListOfShape aList;
|
|||
|
|
mSS.Bind(aW2,aList);
|
|||
|
|
}
|
|||
|
|
BOOL bF = FALSE;
|
|||
|
|
TopTools_ListIteratorOfListOfShape lit;
|
|||
|
|
for(lit.Initialize(mSS.Find(aW2));lit.More();lit.Next())
|
|||
|
|
{
|
|||
|
|
if(aW1.IsEqual(lit.Value()))
|
|||
|
|
{
|
|||
|
|
bF = TRUE;
|
|||
|
|
break;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
if(!bF)
|
|||
|
|
mSS.ChangeFind(aW2).Append(aW1);
|
|||
|
|
bInter = TRUE;
|
|||
|
|
}
|
|||
|
|
else
|
|||
|
|
{
|
|||
|
|
continue;//包围盒相交,实际不相交
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
if(!bInter)//什么都不相交,独立的wire
|
|||
|
|
{
|
|||
|
|
seqAlone.Append(aW1);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
//对相互包含的wire,判断相应关系,创建平面
|
|||
|
|
TopTools_DataMapIteratorOfDataMapOfShapeListOfShape mapit;
|
|||
|
|
for(mapit.Initialize(mSS);mapit.More();mapit.Next())
|
|||
|
|
{
|
|||
|
|
TopoDS_Wire aOW = TopoDS::Wire(mapit.Key());
|
|||
|
|
const TopTools_ListOfShape& aList = mapit.Value();
|
|||
|
|
|
|||
|
|
//创建face
|
|||
|
|
TopoDS_Face aF = ScBRepLib::BuildPlaneFace(aOW,aList);
|
|||
|
|
if(!aF.IsNull())
|
|||
|
|
{
|
|||
|
|
aFList.Append(aF);
|
|||
|
|
nFs ++;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
//对独立的wire创建平面.
|
|||
|
|
for(int ix = 1;ix <= seqAlone.Length();ix ++)
|
|||
|
|
{
|
|||
|
|
TopoDS_Wire aW = TopoDS::Wire(seqAlone.Value(ix));
|
|||
|
|
BRepBuilderAPI_MakeFace MF(aW,Standard_True);
|
|||
|
|
if(MF.IsDone())
|
|||
|
|
{
|
|||
|
|
TopoDS_Face aNF = MF.Face();
|
|||
|
|
if(!aNF.IsNull())
|
|||
|
|
{
|
|||
|
|
aFList.Append(aNF);
|
|||
|
|
nFs ++;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
return nFs;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
//wire 1是否包含wire2.
|
|||
|
|
BOOL ScBRepLib::IsWire2InWire1(const TopoDS_Wire& aW1,const TopoDS_Wire& aW2)
|
|||
|
|
{
|
|||
|
|
BRepBuilderAPI_FindPlane fpln(aW1);
|
|||
|
|
if(!fpln.Found())
|
|||
|
|
return FALSE;
|
|||
|
|
|
|||
|
|
gp_Pln aPln = fpln.Plane()->Pln();
|
|||
|
|
//构造face
|
|||
|
|
BRepBuilderAPI_MakeFace mf(aPln,aW1);
|
|||
|
|
if(!mf.IsDone())
|
|||
|
|
return FALSE;
|
|||
|
|
|
|||
|
|
TopoDS_Face aNF = mf.Face();
|
|||
|
|
|
|||
|
|
//判断w2的一个点是否在mf上.
|
|||
|
|
BOOL bIN = FALSE;
|
|||
|
|
int nC = 0;
|
|||
|
|
BRepTopAdaptor_FClass2d fcls(aNF,Precision::PConfusion());
|
|||
|
|
|
|||
|
|
TopExp_Explorer ex;
|
|||
|
|
for(ex.Init(aW2,TopAbs_VERTEX);ex.More();ex.Next())
|
|||
|
|
{
|
|||
|
|
TopoDS_Vertex aV = TopoDS::Vertex(ex.Current());
|
|||
|
|
gp_Pnt pnt = BRep_Tool::Pnt(aV);
|
|||
|
|
|
|||
|
|
GeomAPI_ProjectPointOnSurf pp(pnt,fpln.Plane());
|
|||
|
|
if(pp.IsDone() && pp.NbPoints() > 0)
|
|||
|
|
{
|
|||
|
|
gp_Pnt2d uv;
|
|||
|
|
double u,v;
|
|||
|
|
pp.LowerDistanceParameters(u,v);
|
|||
|
|
uv.SetCoord(u,v);
|
|||
|
|
//验证是否在aW1内部
|
|||
|
|
TopAbs_State sta = fcls.Perform(uv);
|
|||
|
|
if(sta == TopAbs_IN)
|
|||
|
|
{
|
|||
|
|
bIN = TRUE;
|
|||
|
|
break;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
else
|
|||
|
|
{
|
|||
|
|
nC ++;
|
|||
|
|
if(nC > 3)
|
|||
|
|
break;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
return bIN;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
//从一个外环和一组内环创建face
|
|||
|
|
TopoDS_Face ScBRepLib::BuildPlaneFace(const TopoDS_Wire& aOW,const TopTools_ListOfShape& aIWList)
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
TopoDS_Face aNF;
|
|||
|
|
|
|||
|
|
try{
|
|||
|
|
//先使用外环创建一个平面
|
|||
|
|
BRepBuilderAPI_MakeFace MF(aOW,Standard_True);
|
|||
|
|
if(MF.IsDone())
|
|||
|
|
{
|
|||
|
|
aNF = MF.Face();
|
|||
|
|
if(aNF.IsNull())
|
|||
|
|
return aNF;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
//下面依次对内环进行判断,主要是要保证环闭合,并且环的方向正确
|
|||
|
|
BRep_Builder B;
|
|||
|
|
TopTools_ListIteratorOfListOfShape lit;
|
|||
|
|
for(lit.Initialize(aIWList);lit.More();lit.Next())
|
|||
|
|
{
|
|||
|
|
TopoDS_Wire aW = TopoDS::Wire(lit.Value());
|
|||
|
|
|
|||
|
|
if(aW.IsNull() || !BRep_Tool::IsClosed(aW))
|
|||
|
|
{
|
|||
|
|
//DTRACE("\n inner wire make null or not closed.");
|
|||
|
|
continue;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
//判断内环的方向
|
|||
|
|
TopoDS_Shape aTS = aNF.EmptyCopied();
|
|||
|
|
TopoDS_Face aTF = TopoDS::Face(aTS);
|
|||
|
|
aTF.Orientation(TopAbs_FORWARD);
|
|||
|
|
B.Add(aTF,aW);
|
|||
|
|
BRepTopAdaptor_FClass2d fcls(aTF,Precision::PConfusion());
|
|||
|
|
TopAbs_State sta = fcls.PerformInfinitePoint();
|
|||
|
|
if(sta == TopAbs_OUT)
|
|||
|
|
aW.Reverse();
|
|||
|
|
|
|||
|
|
MF.Add(aW);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
//获取最终的face
|
|||
|
|
aNF = MF.Face();
|
|||
|
|
|
|||
|
|
}catch(Standard_Failure){
|
|||
|
|
return aNF;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
return aNF;
|
|||
|
|
}
|