0031661: Modeling Data - Exception when projecting parabola or hyperbola to plane

ProjLib/ProjLib_ProjectOnPlane.cxx - formatting

0031661: Modeling Data - Algorithm crashes when projecting parabola or hyperbola to plane

ProjLib/ProjLib_ProjectOnPlane.cxx - building of analytical parabola and hyperbola is added
bugs/moddata_3/bug31661_* - new test cases are added

src/ProjLib/ProjLib_ProjectOnPlane.hxx

@@ -199,9 +199,12 @@ public:
 
 protected:
 
+  void GetTrimmedResult(const Handle(Geom_Curve)& theProjCurve);
 
+  Standard_Boolean BuildParabolaByApex(Handle(Geom_Curve)& theGeomParabolaPtr);
+  Standard_Boolean BuildHyperbolaByApex(Handle(Geom_Curve)& theGeomParabolaPtr);
 
-
+  void BuildByApprox(const Standard_Real theLimitParameter);
 
 private:
 

tests/bugs/moddata_3/bug31661_1

@@ -0,0 +1,26 @@
+puts ""
+puts "=========================================================================="
+puts "OCC31661: Modeling Data - Algorithm crashes when projecting parabola or hyperbola to plane"
+puts "=========================================================================="
+puts ""
+
+parabola p 0 0 0  1 1 1  2 0 -2  10
+plane pln 0 0 0  0 0 1
+projonplane r p pln 0
+
+if {![regexp {Parabola} [dump r]]} {
+  puts "ERROR: Projected curve is not a parabola"
+}
+
+trim p p -100 100
+projonplane rp p pln 0
+
+if {![regexp {Parabola} [dump rp]]} {
+  puts "ERROR: Projected curve is not a parabola"
+}
+
+checklength rp -l 408.40363195229503
+bounds rp t1 t2
+checkreal t1 [dval t1] -91.077748943768597 1.e-7 1.e-7
+checkreal t2 [dval t2] 72.221567418462357 1.e-7 1.e-7
+

tests/bugs/moddata_3/bug31661_2

@@ -0,0 +1,26 @@
+puts ""
+puts "=========================================================================="
+puts "OCC31661: Modeling Data - Algorithm crashes when projecting parabola or hyperbola to plane"
+puts "=========================================================================="
+puts ""
+
+hyperbola h 0 0 0  1 1 1  2 0 -2  10 10
+plane pln 0 0 0  0 0 1
+projonplane rh h pln 0
+
+if {![regexp {Hyperbola} [dump rh]]} {
+  puts "ERROR: Projected curve is not a hyperbola"
+}
+
+trim h h -5 5
+projonplane rh h pln 0
+
+if {![regexp {Hyperbola} [dump rh]]} {
+  puts "ERROR: Projected curve is not a hyperbola"
+}
+
+checklength rh -l 1664.3732976598988
+bounds rh t1 t2
+checkreal t1 [dval t1] -5.23179933356147 1.e-7 1.e-7
+checkreal t2 [dval t2] 4.76820064934972 1.e-7 1.e-7
+