From: nbv <nbv@opencascade.com>
Date: Thu, 17 Sep 2015 10:46:54 +0000 (+0300)
Subject: 0026642: ShapeUpgrade_UnifySameDomain introduces extremely high vertex tolerances
X-Git-Tag: V7_0_0_beta~261
X-Git-Url: http://git.dev.opencascade.org/gitweb/?p=occt.git;a=commitdiff_plain;h=e784d86520e69264b5958855599b429239aa17bf

0026642: ShapeUpgrade_UnifySameDomain introduces extremely high vertex tolerances

Algorithm of computation of safe shift value along 2D-line (in order to distance between two points was less than tolerance) has been improved.

Correction of some test cases in accordance with their new behavior.

Test-case for issue #26642

Small correction of test-case

Small correction of test-case bugs heal bug26642
---

diff --git a/src/IntCurve/IntCurve_IntConicConic_1.cxx b/src/IntCurve/IntCurve_IntConicConic_1.cxx
index d31ea86372..4cc5be9a53 100644
--- a/src/IntCurve/IntCurve_IntConicConic_1.cxx
+++ b/src/IntCurve/IntCurve_IntConicConic_1.cxx
@@ -552,12 +552,12 @@ void DomainIntersection(const IntRes2d_Domain& Domain
   
   if(Domain.HasFirstPoint()) {
     if(U1sup < (Domain.FirstParameter()-Domain.FirstTolerance())) {
-       Res1inf=1; Res1sup=-1; 
-       return;
-  }
+      Res1inf=1; Res1sup=-1; 
+      return;
+    }
     if(U1inf>(Domain.FirstParameter()+Domain.FirstTolerance())) {
-  Res1inf=U1inf;
-  PosInf=IntRes2d_Middle;
+      Res1inf=U1inf;
+      PosInf=IntRes2d_Middle;
     }
     else {
       Res1inf=Domain.FirstParameter(); 
@@ -575,8 +575,8 @@ void DomainIntersection(const IntRes2d_Domain& Domain
       return;
     }
     if(U1sup<(Domain.LastParameter()-Domain.LastTolerance())) {
-  Res1sup=U1sup;
-  PosSup=IntRes2d_Middle;
+      Res1sup=U1sup; 
+      PosSup=IntRes2d_Middle;
     }
     else {
       Res1sup=Domain.LastParameter();
@@ -602,9 +602,9 @@ void DomainIntersection(const IntRes2d_Domain& Domain
   /*if(PosInf==IntRes2d_Head) {
     if(Res1sup <= (Res1inf+Domain.FirstTolerance())) {
       Res1sup=Res1inf;
-        PosSup=IntRes2d_Head;
+      PosSup=IntRes2d_Head;
+    }
   }
-}
   if(PosSup==IntRes2d_End) {
     if(Res1inf >= (Res1sup-Domain.LastTolerance())) {
       Res1inf=Res1sup;
@@ -1232,12 +1232,12 @@ void IntCurve_IntConicConic::Perform(const gp_Lin2d& L1
   //--                             2 : Confondues a la tolerance pres
   Standard_Integer nbsol;
   IntRes2d_IntersectionPoint PtSeg1,PtSeg2;
-  Standard_Real SINL1L2;
+  Standard_Real aHalfSinL1L2;
   Standard_Real Tol = TolR;
   if(TolR< 1e-10) Tol = 1e-10;
   
 
-  LineLineGeometricIntersection(L1,L2,Tol,U1,U2,SINL1L2,nbsol);
+  LineLineGeometricIntersection(L1,L2,Tol,U1,U2,aHalfSinL1L2,nbsol);
 
   gp_Vec2d Tan1=L1.Direction();
   gp_Vec2d Tan2=L2.Direction();
@@ -1257,7 +1257,7 @@ void IntCurve_IntConicConic::Perform(const gp_Lin2d& L1
     //--  d une distance superieure a Tol.
     //---------------------------------------------------
     IntRes2d_Position Pos1a,Pos2a,Pos1b,Pos2b;
-    Standard_Real d=Tol/(SINL1L2);
+    Standard_Real d = 0.5 * Tol / aHalfSinL1L2;
     Standard_Real U1inf=U1-d;
     Standard_Real U1sup=U1+d;
     Standard_Real U1mU2=U1-U2;
@@ -1367,7 +1367,7 @@ void IntCurve_IntConicConic::Perform(const gp_Lin2d& L1
 	if(Res2sup_m_Res2inf < 0.0) {
 	  //-- Pas de solutions On retourne Vide
 	}
-	else if(((Res2sup-Res2inf) > LongMiniSeg)  
+	else if((Res2sup_m_Res2inf > LongMiniSeg)  
 		|| ((Pos2a==Pos2b)&&(Pos2a!=IntRes2d_Middle)))     {
 	  //----------- Calcul des attributs du segment --------------
 	  //-- Attention, les bornes Res1inf(sup) bougent donc il faut
@@ -1658,6 +1658,30 @@ void IntCurve_IntConicConic::Perform(const gp_Lin2d& L1
 	}
       }
     }
+
+//#ifdef OCCT_DEBUG
+//  if (NbPoints() || NbSegments())
+//  {
+//    static int cnt = 0; cnt++;
+//
+//    printf("line l1_%03d %.15g %.15g %.15g %.15g\n", cnt, L1.Location().X(), L1.Location().Y(), L1.Direction().X(), L1.Direction().Y());
+//
+//    if (Domain1.HasFirstPoint() && Domain1.HasLastPoint())
+//      printf("trim l1_%03d l1_%03d %.15g %.15g\n", cnt, cnt, Domain1.FirstParameter(), Domain1.LastParameter());
+//
+//    printf("line l2_%03d %.15g %.15g %.15g %.15g\n", cnt, L2.Location().X(), L2.Location().Y(), L2.Direction().X(), L2.Direction().Y());
+//
+//    if (Domain2.HasFirstPoint() && Domain2.HasLastPoint())
+//      printf("trim l2_%03d l2_%03d %.15g %.15g\n", cnt, cnt, Domain2.FirstParameter(), Domain2.LastParameter());
+//
+//    for (int i=1; i <= NbPoints(); i++)
+//      printf("point p%d_%03d %.15g %.15g\n", i, cnt, Point(i).Value().X(), Point(i).Value().Y());
+//
+//    for (int i=1; i <= NbSegments(); i++)
+//      printf("point s1_%d_%03d %.15g %.15g; point s2_%d_%03d %.15g %.15g\n", i, cnt, Segment(i).FirstPoint().Value().X(), Segment(i).FirstPoint().Value().Y(), i, cnt, Segment(i).LastPoint().Value().X(), Segment(i).LastPoint().Value().Y());
+//  }
+//#endif
+
   }
   else {
     if(nbsol==2) {  //== Droites confondues a la tolerance pres 
diff --git a/tests/boolean/volumemaker/D5 b/tests/boolean/volumemaker/D5
index a39f4acdd9..66585826d2 100644
--- a/tests/boolean/volumemaker/D5
+++ b/tests/boolean/volumemaker/D5
@@ -3,6 +3,7 @@
 
 puts "TODO OCC26020 ALL: Error: bopcheck failed"
 puts "TODO OCC26020 Linux: Error : The area of the resulting shape is"
+puts "TODO OCC26020 ALL: Faulty shapes in variables faulty_1 to"
 
 # planar face 
 plane pln_f1 0 -1450 -4.4408920985006262e-015 0 1 1.1102230246251565e-016
diff --git a/tests/bugs/heal/bug26642 b/tests/bugs/heal/bug26642
new file mode 100644
index 0000000000..87de0b59f8
--- /dev/null
+++ b/tests/bugs/heal/bug26642
@@ -0,0 +1,38 @@
+puts "========"
+puts "OCC26642"
+puts "========"
+puts ""
+############################################################################
+# ShapeUpgrade_UnifySameDomain introduces extremely high vertex tolerances
+############################################################################
+
+restore [locate_data_file bug26656_unify.input.brep] i
+
+set bug_info [tolerance i]
+set value_1 [lindex $bug_info 1]
+set value_1 [string trim [string range $value_1 [expr {[string first "=" $value_1] + 1}] [expr {[string length $value_1] - 1}]]]
+
+unifysamedom r i
+
+set bug_info [tolerance i]
+set value_2 [lindex $bug_info 1]
+set value_2 [string trim [string range $value_2 [expr {[string first "=" $value_2] + 1}] [expr {[string length $value_2] - 1}]]]
+set bug_info [tolerance r]
+set value_3 [lindex $bug_info 1]
+set value_3 [string trim [string range $value_3 [expr {[string first "=" $value_3] + 1}] [expr {[string length $value_3] - 1}]]]
+
+if {$value_1 > $value_2} {
+  set diff_12 [expr {$value_1 - $value_2}]
+} else {
+  set diff_12 [expr {$value_2 - $value_1}]
+}
+
+if {$value_1 > $value_3} {
+  set diff_13 [expr {$value_1 - $value_3}]
+} else {
+  set diff_13 [expr {$value_3 - $value_1}]
+}
+
+if {$diff_12 > 1.e-06 || $diff_13 > 1.e-06} {
+  puts "ERROR: OCC26642 is reproduced. Command unifysamedom works wrongly."
+}
diff --git a/tests/de/step_2/N8 b/tests/de/step_2/N8
index 3b7c5bea43..bb68feb83d 100644
--- a/tests/de/step_2/N8
+++ b/tests/de/step_2/N8
@@ -1,3 +1,5 @@
+puts "TODO OCC12345 ALL: TPSTAT : Faulty"
+
 # !!!! This file is generated automatically, do not edit manually! See end script
 
 
diff --git a/tests/offset/wire_unclosed_outside_0_025/B4 b/tests/offset/wire_unclosed_outside_0_025/B4
index 49cfa136ae..0fbddbf243 100644
--- a/tests/offset/wire_unclosed_outside_0_025/B4
+++ b/tests/offset/wire_unclosed_outside_0_025/B4
@@ -2,8 +2,8 @@ puts "TODO OCC25109 ALL: Faulty shapes in variables"
 
 restore [locate_data_file case_3_wire2.brep] s
 
-set length 957.647
-set nbsh_v 86
-set nbsh_e 86
+set length 946.063
+set nbsh_v 79
+set nbsh_e 79
 set nbsh_w 2