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OpenCascade/occt

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nds 9294c8f774 0028631: Modeling Algorithms - Crash while building a 2D circle tangent to another circle and passing through its center

Code correction includes also:
- extending GccEnt to have GccEnt_Position conversion to string value and backward;
- new GeometryTest_DrawableQualifiedCurve2d DRAW object to wrap GccEnt_QualifiedCirc/GccEnt_QualifiedLin.
  It is a DrawTrSurf_Curve2d with GccEnt_Position visualized in orange color.
- qcircle/qline DRAW command to create instance of GeometryTest_DrawableQualifiedCurve2d
- circ2d3Tan DRAW command to wrap GccAna_Circ2d3Tan taking qcircle/qline/point arguments.

2017-08-17 22:21:32 +03:00

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 qline l1 0 0 10 20
 qline l2 0 0 10 -40
 qline l3 160 0 -40 10
 circ2d3Tan tan1 l1 l2 l3
 checklength tan1_1 -l 213.09795279419643
 checklength tan1_2 -l 284.90187851033369
 checklength tan1_3 -l 131.38343888467227
 checklength tan1_4 -l 63.235238531994284