occt: master 81093856

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Author Committer Branch Timestamp Parent
msv bugmaster master 2016-05-04 01:12:28 master 4f51d9d7
Changeset 0027362: Meshing performance

1) BRepMesh_FastDiscretFace.cxx:
- exclude planes from procedure of inserting internal points.
- localize declaration of the container aNewVertices in each method where it is needed.
- correct the logic of the method insertInternalVerticesOther, so that to separate the processes of removing extra points and addition of new points in different cycles, thus making the code more clear and in addition stable.
- insert useful output of intermediate mesh to a file in control() method for debug purposes (with definition DEBUG_MESH).

2) Add global functions MeshTest_DrawTriangles and MeshTest_DrawLinks to draw mesh data in debug session.

3) BRepMesh_FastDiscret:
- in the method Add calculations of deflections have been simplified for non-relative mode.
- replace the attribute MinDist with Deflection in EdgeAttributes structure. Correct its computation so that later to store this value as deflection of the polygon.

4) Make protection against exception in the method BRepMesh_Delaun::addTriangle() when an added triangle creates a third connection of a mesh edge.

5) BRepMesh_EdgeTessellator.cxx, BRepMesh_EdgeTessellationExtractor.cxx: use Geom2dAdaptor_Curve in order to use b-spline cache while computing value on a curve.

6) In BndLib_Box2dCurve::PerformBSpline, avoid creating new b-spline in case of requested parameter range differ from natural bounds insignificantly.

7) In GeomAdaptor classes, postpone building of cache till the time of its actual usage. So, creation of an adapter to compute intervals of continuity does not lead to creation of internal cache.

8) In the methods BRepAdaptor_Curve::Bezier and BSpline do not call Transformed() if transformation is identity.

9) In the classes Geom_BSplineCurve, Geom_BSplineSurface, Geom_BezierCurve, Geom_BezierSurface, Geom2d_BSplineCurve, Geom2d_BezierCurve change the method Pole() to return the point by const reference.

10) In CPnts_AbscissaPoint.cxx, compute derivative by D1 instead of DN to make use of b-spline cache.

11) Change test cases to actual state:
  - Number of triangles/nodes can grow due to more accurate work with deflection of edges. Now the edge is tessellated using its own tolerance instead of maximal tolerance of all shapes in the face.
  - Accept new numbers of mesh errors (free links, free nodes) for really bad shapes.
  - Correct the test "bugs/mesh/bug25612" to produce stable result.
  - Disable redundant checks in test cases bug25378* (lower limit for computation time).

- Speed up iso-lines computation for offset of bspline surfaces. For that use adaptor instead of original surface in evaluator of approximation.
- Add output of polylines for debug of insertInternalVerticesOther().

Reference data in test case bugs\moddata_2\bug453_3 have been changed to be close to expected theoretical values. This makes the test give stable result on different platforms.
mod - dox/dev_guides/debug/debug.md Diff File
mod - src/BndLib/BndLib_Add2dCurve.cxx Diff File
mod - src/BRepAdaptor/BRepAdaptor_Curve.cxx Diff File
mod - src/BRepMesh/BRepMesh_Delaun.cxx Diff File
mod - src/BRepMesh/BRepMesh_Delaun.hxx Diff File
mod - src/BRepMesh/BRepMesh_EdgeTessellationExtractor.cxx Diff File
mod - src/BRepMesh/BRepMesh_EdgeTessellationExtractor.hxx Diff File
mod - src/BRepMesh/BRepMesh_EdgeTessellator.cxx Diff File
mod - src/BRepMesh/BRepMesh_EdgeTessellator.hxx Diff File
mod - src/BRepMesh/BRepMesh_FastDiscret.cxx Diff File
mod - src/BRepMesh/BRepMesh_FastDiscret.hxx Diff File
mod - src/BRepMesh/BRepMesh_FastDiscretFace.cxx Diff File
mod - src/BRepMesh/BRepMesh_FastDiscretFace.hxx Diff File
mod - src/BRepMesh/BRepMesh_GeomTool.cxx Diff File
mod - src/BRepMesh/BRepMesh_GeomTool.hxx Diff File
mod - src/BRepMesh/BRepMesh_ShapeTool.cxx Diff File
mod - src/BRepMesh/BRepMesh_ShapeTool.hxx Diff File
mod - src/CPnts/CPnts_AbscissaPoint.cxx Diff File
mod - src/Geom/Geom_BezierCurve.cxx Diff File
mod - src/Geom/Geom_BezierCurve.hxx Diff File
mod - src/Geom/Geom_BezierSurface.cxx Diff File
mod - src/Geom/Geom_BezierSurface.hxx Diff File
mod - src/Geom/Geom_BSplineCurve.hxx Diff File
mod - src/Geom/Geom_BSplineCurve_1.cxx Diff File
mod - src/Geom/Geom_BSplineSurface.hxx Diff File
mod - src/Geom/Geom_BSplineSurface_1.cxx Diff File
mod - src/Geom/Geom_OffsetSurface.cxx Diff File
mod - src/Geom2d/Geom2d_BezierCurve.cxx Diff File
mod - src/Geom2d/Geom2d_BezierCurve.hxx Diff File
mod - src/Geom2d/Geom2d_BSplineCurve.hxx Diff File
mod - src/Geom2d/Geom2d_BSplineCurve_1.cxx Diff File
mod - src/Geom2dAdaptor/Geom2dAdaptor_Curve.cxx Diff File
mod - src/Geom2dAdaptor/Geom2dAdaptor_Curve.hxx Diff File
mod - src/GeomAdaptor/GeomAdaptor_Curve.cxx Diff File
mod - src/GeomAdaptor/GeomAdaptor_Curve.hxx Diff File
mod - src/GeomAdaptor/GeomAdaptor_Surface.cxx Diff File
mod - src/GeomAdaptor/GeomAdaptor_Surface.hxx Diff File
mod - src/MeshTest/FILES Diff File
add - src/MeshTest/MeshTest_Debug.cxx Diff File
mod - tests/blend/simple/G6 Diff File
mod - tests/bugs/iges/bug306 Diff File
mod - tests/bugs/mesh/bug23631 Diff File
mod - tests/bugs/mesh/bug25378_1_1 Diff File
mod - tests/bugs/mesh/bug25378_1_2 Diff File
mod - tests/bugs/mesh/bug25378_1_3 Diff File
mod - tests/bugs/mesh/bug25378_3_3 Diff File
mod - tests/bugs/mesh/bug25519 Diff File
mod - tests/bugs/mesh/bug25612 Diff File
mod - tests/bugs/modalg_2/bug264_0 Diff File
mod - tests/bugs/modalg_2/bug287 Diff File
mod - tests/bugs/modalg_2/bug292 Diff File
mod - tests/bugs/moddata_1/bug22759 Diff File
mod - tests/bugs/moddata_2/bug453_3 Diff File
mod - tests/bugs/moddata_2/fra62476_2 Diff File
mod - tests/bugs/moddata_3/bug25737_1 Diff File
mod - tests/bugs/vis/bug288_5 Diff File
mod - tests/mesh/data/advanced/A7 Diff File
mod - tests/mesh/data/standard/C7 Diff File
mod - tests/mesh/data/standard/J8 Diff File
mod - tests/mesh/data/standard/L2 Diff File
mod - tests/mesh/data/standard/L6 Diff File
mod - tests/mesh/data/standard/U7 Diff File
mod - tests/mesh/data/standard/V4 Diff File
mod - tests/mesh/data/standard/W4 Diff File
mod - tests/mesh/data/standard/X3 Diff File