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// File: TopOpeBRepBuild_PaveClassifier.cxx
// Created: Thu Jun 17 18:44:17 1993
// Author: Jean Yves LEBEY
// <jyl@zerox>
#include <TopOpeBRepBuild_PaveClassifier.ixx>
#include <TopOpeBRepBuild_Pave.hxx>
#include <TopoDS.hxx>
#include <TopoDS_Vertex.hxx>
#include <BRep_Tool.hxx>
#include <ElCLib.hxx>
#include <Geom_Curve.hxx>
#include <Precision.hxx>
#include <TopExp.hxx>
#ifdef DEB
Standard_IMPORT Standard_Boolean TopOpeBRepTool_GettraceVC();
Standard_IMPORT Standard_Boolean TopOpeBRepTool_GettraceCLOV();
#endif
//=======================================================================
//function : TopOpeBRepBuild_PaveClassifier
//purpose :
//=======================================================================
TopOpeBRepBuild_PaveClassifier::TopOpeBRepBuild_PaveClassifier
(const TopoDS_Shape& E) :
myEdgePeriodic(Standard_False),
mySameParameters(Standard_False),
myClosedVertices(Standard_False)
{
myEdge = TopoDS::Edge(E);
if ( ! BRep_Tool::Degenerated(myEdge) ) {
TopLoc_Location loc;
Standard_Real f,l;
Handle(Geom_Curve) C = BRep_Tool::Curve(myEdge,loc,f,l);
if ( !C.IsNull() ) {
if (C->IsPeriodic()) {
TopoDS_Vertex v1,v2;
TopExp::Vertices(myEdge,v1,v2); // v1 FORWARD, v2 REVERSED
if ( !v1.IsNull() && !v2.IsNull() ) {
// --- the edge has vertices
myFirst = f;
Standard_Real fC = C->FirstParameter();
Standard_Real lC = C->LastParameter();
myPeriod = lC - fC;
myEdgePeriodic = mySameParameters = v1.IsSame(v2);
if ( mySameParameters ) {
myFirst = BRep_Tool::Parameter(v1,myEdge);
}
}
else {
// --- the edge has no vertices
myFirst = f;
myPeriod = l - f;
myEdgePeriodic = Standard_True;
mySameParameters = Standard_False;
}
}
}
#ifdef DEB
if (TopOpeBRepTool_GettraceVC()) {
cout<<endl;
if (myEdgePeriodic) {
cout<<"VC : periodic edge : myFirst "<<myFirst<<" myPeriod "<<myPeriod<<endl;
if (mySameParameters)cout<<"VC same parameters "<<endl;
else cout<<"VC no same parameters"<<endl;
}
else {
cout<<"VC : non periodic edge : f "<<f<<" l "<<l<<endl;
}
}
#endif
} // ! degenerated
}
//=======================================================================
//function : CompareOnNonPeriodic
//purpose :
//=======================================================================
TopAbs_State TopOpeBRepBuild_PaveClassifier::CompareOnNonPeriodic()
{
TopAbs_State state = TopAbs_UNKNOWN;
Standard_Boolean lower=Standard_False;
switch (myO2) {
case TopAbs_FORWARD : lower = Standard_False; break;
case TopAbs_REVERSED : lower = Standard_True; break;
case TopAbs_INTERNAL : state = TopAbs_IN; break;
case TopAbs_EXTERNAL : state = TopAbs_OUT; break;
}
if (state == TopAbs_UNKNOWN) {
if (myP1 == myP2) {
if ( myO1 == myO2 ) state = TopAbs_IN;
else state = TopAbs_OUT;
}
else if (myP1 < myP2) {
if (lower) state = TopAbs_IN;
else state = TopAbs_OUT;
}
else {
if (lower) state = TopAbs_OUT;
else state = TopAbs_IN;
}
}
#ifdef DEB
if (TopOpeBRepTool_GettraceVC()) {
cout<<"VC_NP : ";
if (myP1 == myP2) cout<<" p1 = p2";
else if (myP1 < myP2) cout<<" p1 < p2";
else if (myP1 > myP2) cout<<" p1 > p2";
cout<<" --> state "; TopAbs::Print(state,cout); cout<<endl;
}
#endif
return state;
}
//=======================================================================
//function : AdjustCase
//purpose :
//=======================================================================
Standard_Real TopOpeBRepBuild_PaveClassifier::AdjustCase(const Standard_Real p1,
const TopAbs_Orientation o,
const Standard_Real first,
const Standard_Real period,
const Standard_Real tol,
Standard_Integer& cas)
{
Standard_Real p2;
if ( Abs(p1-first) < tol ) { // p1 is first
if (o == TopAbs_REVERSED) {
p2 = p1 + period;
cas = 1;
}
else {
p2 = p1;
cas = 2;
}
}
else { // p1 is not on first
Standard_Real last = first+period;
if ( Abs(p1-last) < tol ) { // p1 is on last
p2 = p1;
cas = 3;
}
else { // p1 is not on last
p2 = ElCLib::InPeriod(p1,first,last);
cas = 4;
}
}
return p2;
}
//=======================================================================
//function : AdjustOnPeriodic
//purpose : (private)
//=======================================================================
void TopOpeBRepBuild_PaveClassifier::AdjustOnPeriodic()
{
if ( ! ToAdjustOnPeriodic() ) return;
#ifdef DEB
Standard_Real p1 = myP1, p2 = myP2;
#endif
Standard_Real tol = Precision::PConfusion();
if (mySameParameters) {
myP1 = AdjustCase(myP1,myO1,myFirst,myPeriod,tol,myCas1);
myP2 = AdjustCase(myP2,myO2,myFirst,myPeriod,tol,myCas2);
}
else if (myO1 != myO2 ) {
if (myO1 == TopAbs_FORWARD) myP2 = AdjustCase(myP2,myO2,myP1,myPeriod,tol,myCas2);
if (myO2 == TopAbs_FORWARD) myP1 = AdjustCase(myP1,myO1,myP2,myPeriod,tol,myCas1);
}
#ifdef DEB
if (TopOpeBRepTool_GettraceVC()) {
cout<<"p1 "<<p1<<" ";TopAbs::Print(myO1,cout);cout<<" --> "<<myP1<<endl;
cout<<"p2 "<<p2<<" ";TopAbs::Print(myO2,cout);cout<<" --> "<<myP2<<endl;
}
#endif
}
//=======================================================================
//function : ToAdjustOnPeriodic
//purpose : (private)
//=======================================================================
Standard_Boolean TopOpeBRepBuild_PaveClassifier::ToAdjustOnPeriodic() const
{
Standard_Boolean toadjust = ( (mySameParameters) || (myO1 != myO2 ) );
return toadjust;
}
//=======================================================================
//function : CompareOnPeriodic
//purpose :
//=======================================================================
TopAbs_State TopOpeBRepBuild_PaveClassifier::CompareOnPeriodic()
{
TopAbs_State state;
if ( ToAdjustOnPeriodic() ) {
state = CompareOnNonPeriodic();
}
else if (myO1 == TopAbs_FORWARD) {
state = TopAbs_OUT;
myCas1 = myCas2 = 5;
}
else if (myO1 == TopAbs_REVERSED) {
state = TopAbs_OUT;
myCas1 = myCas2 = 6;
}
else {
state = TopAbs_OUT;
myCas1 = myCas2 = 7;
}
#ifdef DEB
if (TopOpeBRepTool_GettraceVC()) {
cout<<"VC_P : cas "<<myCas1<<"__"<<myCas2;
cout<<" --> state "; TopAbs::Print(state,cout); cout<<endl;
}
#endif
return state;
}
//=======================================================================
//function : Compare
//purpose :
//=======================================================================
TopAbs_State TopOpeBRepBuild_PaveClassifier::Compare
(const Handle(TopOpeBRepBuild_Loop)& L1,
const Handle(TopOpeBRepBuild_Loop)& L2)
{
const Handle(TopOpeBRepBuild_Pave)& PV1 =
*((Handle(TopOpeBRepBuild_Pave)*)&(L1));
const Handle(TopOpeBRepBuild_Pave)& PV2 =
*((Handle(TopOpeBRepBuild_Pave)*)&(L2));
myCas1 = myCas2 = 0; // debug
myO1 = PV1->Vertex().Orientation();
myO2 = PV2->Vertex().Orientation();
myP1 = PV1->Parameter();
myP2 = PV2->Parameter();
#ifdef DEB
if (TopOpeBRepTool_GettraceVC()) {
cout<<endl<<"VC : "<<myP1<<" "<<myP2<<" ";
TopAbs::Print(myO1,cout); cout<<" "; TopAbs::Print(myO2,cout);
cout<<" (p "<<myEdgePeriodic;
cout<<" s "<<mySameParameters<<" c "<<myClosedVertices<<")"<<endl;
}
#endif
if ( myEdgePeriodic && ToAdjustOnPeriodic() ) {
AdjustOnPeriodic();
}
TopAbs_State state;
if (myEdgePeriodic)
state = CompareOnPeriodic();
else
state = CompareOnNonPeriodic();
#ifdef DEB
if (TopOpeBRepTool_GettraceVC()) {
cout<<"VC : --> final state "; TopAbs::Print(state,cout); cout<<endl;
}
#endif
return state;
}
//=======================================================================
//function : SetFirstParameter
//purpose :
//=======================================================================
void TopOpeBRepBuild_PaveClassifier::SetFirstParameter
(const Standard_Real P)
{
myFirst = P;
mySameParameters = Standard_True;
#ifdef DEB
if (TopOpeBRepTool_GettraceVC())
cout<<endl<<"VC : set first parameter "<<myFirst<<endl;
#endif
}
//=======================================================================
//function : ClosedVertices
//purpose :
//=======================================================================
void TopOpeBRepBuild_PaveClassifier::ClosedVertices
(const Standard_Boolean Closed)
{
myClosedVertices = Closed;
#ifdef DEB
if (TopOpeBRepTool_GettraceCLOV()) {
myEdgePeriodic = Closed;
cout<<"::::::::::::::::::::::::"<<endl;
cout<<"VC : myClosedVertices"<<myClosedVertices<<endl;
cout<<"VC : myEdgePeriodic "<<myEdgePeriodic<<endl;
cout<<"::::::::::::::::::::::::"<<endl;
}
#endif
}
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