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EgtGeomKernel 2.3l1 :

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- in IntersTriaTria aggiunto riconoscimento triangoli coincidenti
- in IntersTriaTria aggiunta distinzione tra intersezione sovrapposta equiversa e controversa.
This commit is contained in:
DarioS
2021-12-06 16:47:36 +01:00
parent 6cdfdf6db8
commit ca83aaa249
4 changed files with 44 additions and 9 deletions
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IntersTriaTria.cpp
+31 -2
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@@ -83,8 +83,37 @@ IntersTriaTria( const Triangle3d& trTria1, const Triangle3d& trTria2, Point3d& p
// se i triangoli sono complanari
if ( nResPP == IPPT_OVERLAPS ||
((( nVertPos1 == 0 && nVertNeg1 == 0) || ( nVertPos2 == 0 && nVertNeg2 == 0)) &&
( trTria1.GetN() ^ trTria2.GetN()).SqLen() < 25 * SIN_EPS_ANG_SMALL * SIN_EPS_ANG_SMALL))
return IntersCoplanarTriaTria( trTria1, trTria2, vTria) ;
( trTria1.GetN() ^ trTria2.GetN()).SqLen() < 25 * SIN_EPS_ANG_SMALL * SIN_EPS_ANG_SMALL)) {
// verifica per triangoli con normali controverse
bool bCounter = false ;
Triangle3d trMyTria2 = trTria2 ;
if ( trTria1.GetN() * trTria2.GetN() < 0) {
Point3d ptV0 = trMyTria2.GetP( 0) ;
trMyTria2.SetP( 0, trMyTria2.GetP( 1)) ;
trMyTria2.SetP( 1, ptV0) ;
trMyTria2.Validate() ;
bCounter = true ;
}
// verifica per triangoli coincidenti
bool bAreSameTria = ( ( AreSamePointExact( trTria1.GetP( 0), trMyTria2.GetP( 0)) &&
AreSamePointExact( trTria1.GetP( 1), trMyTria2.GetP( 1)) &&
AreSamePointExact( trTria1.GetP( 2), trMyTria2.GetP( 2))) ||
( AreSamePointExact( trTria1.GetP( 0), trMyTria2.GetP( 1)) &&
AreSamePointExact( trTria1.GetP( 1), trMyTria2.GetP( 2)) &&
AreSamePointExact( trTria1.GetP( 2), trMyTria2.GetP( 0))) ||
( AreSamePointExact( trTria1.GetP( 0), trMyTria2.GetP( 2)) &&
AreSamePointExact( trTria1.GetP( 1), trMyTria2.GetP( 0)) &&
AreSamePointExact( trTria1.GetP( 2), trMyTria2.GetP( 1)))) &&
( AreSameVectorExact( trTria1.GetN(), trMyTria2.GetN())) ;
if ( bAreSameTria) {
vTria.emplace_back( trTria1) ;
return ( bCounter ? ITTT_COUNTER_OVERLAPS : ITTT_OVERLAPS) ;
}
if ( ITTT_OVERLAPS == IntersCoplanarTriaTria( trTria1, trMyTria2, vTria)) {
return ( bCounter ? ITTT_COUNTER_OVERLAPS : ITTT_OVERLAPS) ;
}
return ITTT_NO ;
}
// limito la linea di intersezione con il primo triangolo
Point3d ptSt1, ptEn1 ;