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3 Commits

Author SHA1 Message Date
ifv
bdd09cfaf4 0031242: Scaling with different coefficients along axes produces invalid shape
GeomConvert_1.cxx:
Creation periodic BSpline surfaces from trimmed periodic surface if trim is boundaries of periodic domain is allowed

BRepTools_NurbsConvertModification.cxx:
Checking domain of 2dCurves if surfaces are periodic is added

Test case tests/bugs/mesh/bug30008_2 is modified according to current behavior

Test case tests/bugs/modalg_7/bug31242 is added
2019-12-23 11:49:04 +03:00
ifv
ba7f665dce 0030435: Improving performance of Approx_ComputeCLine
1. Approx_ComputeCLine.gxx, Approx_FitAndDivide.hxx, Approx_FitAndDivide2d.hxx, BRepFill_ComputeCLine.hxx
It is base modification, which allows improve performance of approximation with help of Approx_ComputeCLine. The main idea of improvement is using degree selection by inverse order - from maxdegree to mindegree. If tolerance for maxdegree is not reached, there is no sense to make approximation for current number of knots with lower degree, it is necessary to cut parametric interval.

2. ProjLib_ComputeApprox, ProjLib_ComputeApproxOnPolarSurface, ProjLib_ComputeApproxOnPolarSurface, ProjLib_ProjectOnPlane
It is additional modification of methods using Approx_ComputeCLine.
Mainly, modifications concern to more optimal choosing parameters for approximation algorithm.

3. BRepCheck_Face
Small improvement of method Intersect(...), which intersects two wires on face.

4. BRepTopAdaptor_FClass2d
Impovement of treatment infinitely narrow faces.

5. ChFi3d/ChFi3d_Builder_6.cxx
Small improvement, which forbids extension of singular boundary of surface.
It was TODO problem in tests/bugs/modalg_7/bug27711_3

6. IntTools_EdgeEdge.cxx
Improvement of performance for cases of searching common parts between line  and analytical curve

7. GeomliteTest_CurveCommands.cxx
Adding Draw command fitcurve. This command is analog of approxcurve, but uses Approx_FitAndDivide algorithm.
Mainly to have direct draw command for testing Approx_ComputeCLine.

8. Extrema_ExtElC.cxx

Treatment of case "infinite solutions" for extrema line-ellipse

9. Modification of some tests according to new behavior of algorithm.

10. tests/perf/moddata/bug30435
Test for new improved algorithm.

11. Implementation QAcommand OCC30435 in QABugs_20.cxx used in test bug30435
2019-04-22 14:03:45 +03:00
nbv
46478ffe32 0030008: BRepMesh does not respect angular deflection in internal area of bspline surface
1. Check whether the mesh satisfies the required angular deflection has been amended. Namely normals (to the surface) in the ends of any not "frontier" link are made collinear (with the given angular tolerance).

2. New parameters AngleInterior and DeflectionInterior have been added in IMeshTools_Parameters structure.

3. In case of thin long faces with internal edges, add points of internal edges to control parameters using grabParamsOfInternalEdges() in order to avoid aberrations on its ends. Disable addition of parameters from boundary edges in case of BSpline surface. Deviation can be controlled through the deflection parameter.

4. Grab parameters from edges in case if there is just a single interval on BSpline surface along U and V direction.
2018-11-02 17:06:41 +03:00