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// File: BOP_Area2dBuilder.cxx
//modified by NIZNHY-PKV Tue Apr 3 15:50:23 2001
// Created: Thu Dec 21 17:07:40 1995
// Author: Jean Yves LEBEY
// <jyl@meteox>
//Copyright: Matra Datavision 1995
#include <BOP_Area2dBuilder.ixx>
#include <BOP_Loop.hxx>
#include <BOP_ListIteratorOfListOfLoop.hxx>
//=======================================================================
//function : BOP_Area2dBuilder::BOP_Area2dBuilder
//purpose :
//=======================================================================
BOP_Area2dBuilder::BOP_Area2dBuilder()
{
}
//=======================================================================
//function : BOP_Area2dBuilder::BOP_Area2dBuilder
//purpose :
//=======================================================================
BOP_Area2dBuilder::BOP_Area2dBuilder(BOP_LoopSet& LS,
BOP_LoopClassifier& LC,
const Standard_Boolean ForceClass)
{
InitAreaBuilder(LS,LC,ForceClass);
}
//=======================================================================
//function : InitAreaBuilder
//purpose :
//=======================================================================
void BOP_Area2dBuilder::InitAreaBuilder(BOP_LoopSet& LS,
BOP_LoopClassifier& LC,
const Standard_Boolean ForceClass)
{
TopAbs_State state;
Standard_Boolean Loopinside;
Standard_Boolean loopoutside;
BOP_ListIteratorOfListOfListOfLoop AreaIter;
BOP_ListIteratorOfListOfLoop LoopIter;
// boundaryloops : list of boundary loops out of the areas.
BOP_ListOfLoop boundaryloops;
myArea.Clear(); // Clear the list of Area to be built
for (LS.InitLoop(); LS.MoreLoop(); LS.NextLoop()) {
// process a new loop : L is the new current Loop
const Handle(BOP_Loop)& L = LS.Loop();
Standard_Boolean boundaryL = L->IsShape();
//
//const TopoDS_Shape& aSL=L->Shape();
//
// L = shape et ForceClass : on traite L comme un block
// L = shape et !ForceClass : on traite L comme un pur shape
// L = !shape : on traite L comme un block
Standard_Boolean traitercommeblock = (!boundaryL) || ForceClass;
if ( !traitercommeblock ) {
// the loop L is a boundary loop :
// - try to insert it in an existing area, such as L is inside all
// the block loops. Only block loops of the area are compared.
// - if L could not be inserted, store it in list of boundary loops.
Loopinside = Standard_False;
AreaIter.Initialize(myArea);
for (; AreaIter.More(); AreaIter.Next()) {
BOP_ListOfLoop& aArea = AreaIter.Value();
if ( aArea.IsEmpty() ) {
continue;
}
state = CompareLoopWithListOfLoop(LC,L,aArea,BOP_BLOCK );
if (state == TopAbs_UNKNOWN){
Atomize(state,TopAbs_IN);
}
Loopinside = ( state == TopAbs_IN);
if ( Loopinside ) {
break;
}
} // end of Area scan
if ( Loopinside ) {
BOP_ListOfLoop& aArea = AreaIter.Value();
ADD_Loop_TO_LISTOFLoop(L, aArea);
}
else if ( ! Loopinside ) {
ADD_Loop_TO_LISTOFLoop(L, boundaryloops);
}
} // end of boundary loop
else {
// the loop L is a block loop
// if L is IN theArea :
// - stop area scan, insert L in theArea.
// - remove from the area all the loops outside L
// - make a new area with them, unless they are all boundary
// - if they are all boundary put them back in boundaryLoops
// else :
// - create a new area with L.
// - insert boundary loops that are IN the new area
// (and remove them from 'boundaryloops')
//
Standard_Integer aNbAreas, aNbLoops;
Loopinside = Standard_False;
//
aNbAreas=myArea.Extent();
if (aNbAreas) {
AreaIter.Initialize(myArea);
for (; AreaIter.More(); AreaIter.Next()) {
BOP_ListOfLoop& aArea = AreaIter.Value();
aNbLoops=aArea.Extent();
if (!aNbLoops){
continue;
}
//
state = CompareLoopWithListOfLoop(LC, L, aArea, BOP_ANYLOOP);
//
if (state == TopAbs_UNKNOWN){
Atomize(state,TopAbs_IN);
}
//
Loopinside = (state==TopAbs_IN);
if ( Loopinside ){
break;
}
} // end of Area scan
}
//
if ( Loopinside) {
BOP_ListOfLoop& aArea = AreaIter.Value();
Standard_Boolean allShape = Standard_True;
BOP_ListOfLoop removedLoops;
LoopIter.Initialize(aArea);
while (LoopIter.More()) {
const Handle(BOP_Loop)& curL = LoopIter.Value();
state = LC.Compare(curL, L);
if (state == TopAbs_UNKNOWN) {
Atomize(state,TopAbs_IN); // not OUT
}
//
loopoutside = ( state == TopAbs_OUT );
//
if ( loopoutside ) {
// remove the loop from the area
ADD_Loop_TO_LISTOFLoop(curL, removedLoops);
allShape = allShape && curL->IsShape();
REM_Loop_FROM_LISTOFLoop(LoopIter, aArea);
}
else {
LoopIter.Next();
}
}// while (LoopIter.More()) {
//
// insert the loop in the area
ADD_Loop_TO_LISTOFLoop(L, aArea);
if ( ! removedLoops.IsEmpty() ) {
if ( allShape ) {
ADD_LISTOFLoop_TO_LISTOFLoop (removedLoops,boundaryloops);
}
else {
// make a new area with the removed loops
BOP_ListOfLoop thelistofloop;
myArea.Append(thelistofloop);
ADD_LISTOFLoop_TO_LISTOFLoop(removedLoops, myArea.Last());
}
}
} // Loopinside == True
else {
Standard_Integer ashapeinside,ablockinside;
BOP_ListOfLoop thelistofloop1;
myArea.Append(thelistofloop1);
BOP_ListOfLoop& newArea0 = myArea.Last();
ADD_Loop_TO_LISTOFLoop(L, newArea0);
LoopIter.Initialize(boundaryloops);
while ( LoopIter.More() ) {
ashapeinside = ablockinside = Standard_False;
const Handle(BOP_Loop)& lb = LoopIter.Value();
state = LC.Compare(lb,L);
if (state == TopAbs_UNKNOWN){
Atomize(state,TopAbs_IN);
}
ashapeinside = (state == TopAbs_IN);
if (ashapeinside) {
state = LC.Compare(L,lb);
if (state == TopAbs_UNKNOWN){
Atomize(state,TopAbs_IN);
}
ablockinside = (state == TopAbs_IN);
}
if ( ashapeinside && ablockinside ) {
const Handle(BOP_Loop)& curL = LoopIter.Value();
ADD_Loop_TO_LISTOFLoop(curL, newArea0);
REM_Loop_FROM_LISTOFLoop(LoopIter,boundaryloops);
}
else {
LoopIter.Next();
}
} // end of boundaryloops scan
} // Loopinside == False
} // end of block loop
} // end of LoopSet LS scan
if ( ! boundaryloops.IsEmpty() ) {
if ( myArea.IsEmpty() ) {
BOP_ListOfLoop newArea3;
newArea3.Append(boundaryloops);
myArea.Append(newArea3);
}
}
InitArea();
}
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