2 Commits

Author	SHA1	Message	Date
oan	7bd071edb1	0026106: BRepMesh - revision of data model ... Removed tight connections between data structures, auxiliary tools and algorithms in order to create extensible solution, easy for maintenance and improvements; Code is separated on several functional units responsible for specific operation for the sake of simplification of debugging and readability; Introduced new data structures enabling possibility to manipulate discrete model of particular entity (edge, wire, face) in order to perform computations locally instead of processing an entire model. The workflow of updated component can be divided on six parts: * Creation of model data structure: source TopoDS_Shape passed to algorithm is analyzed and exploded on faces and edges. For each topological entity corresponding reflection is created in data model. Note that underlying algorithms use data model as input and access it via common interface which allows user to create custom data model with necessary dependencies between particular entities; * Discretize edges 3D & 2D curves: 3D curve as well as associated set of 2D curves of each model edge is discretized in order to create coherent skeleton used as a base in faces meshing process. In case if some edge of source shape already contains polygonal data which suites specified parameters, it is extracted from shape and stored to the model as is. Each edge is processed separately, adjacency is not taken into account; * Heal discrete model: source TopoDS_Shape can contain problems, such as open-wire or self-intersections, introduced during design, exchange or modification of model. In addition, some problems like self-intersections can be introduced by roughly discretized edges. This stage is responsible for analysis of discrete model in order to detect and repair faced problems or refuse model’s part for further processing in case if problem cannot be solved; * Preprocess discrete model: defines actions specific for implemented approach to be performed before meshing of faces. By default, iterates over model faces and checks consistency of existing triangulations. Cleans topological faces and its adjacent edges from polygonal data in case of inconsistency or marks face of discrete model as not required for computation; * Discretize faces: represents core part performing mesh generation for particular face based on 2D discrete data related to processing face. Caches polygonal data associated with face’s edges in data model for further processing and stores generated mesh to TopoDS_Face; * Postprocess discrete model: defines actions specific for implemented approach to be performed after meshing of faces. By default, stores polygonal data obtained on previous stage to TopoDS_Edge objects of source model. Component is now spread over IMeshData, IMeshTools, BRepMeshData and BRepMesh units. <!break> 1. Extend "tricheck" DRAW-command in order to find degenerated triangles. 2. Class BRepMesh_FastDiscret::Parameters has been declared as deprecated. 3. NURBS range splitter: do not split intervals without necessity. Intervals are split only in case if it is impossible to compute normals directly on intervals. 4. Default value of IMeshTools_Parameters::MinSize has been changed. New value is equal to 0.1*Deflection. 5. Correction of test scripts: 1) perf mesh bug27119: requested deflection is increased from 1e-6 to 1e-5 to keep reasonable performance (but still reproducing original issue) 2) bugs mesh bug26692_1, 2: make snapshot of triangulation instead of wireframe (irrelevant) Correction in upgrade guide.	2018-11-02 17:06:40 +03:00
apv	cba287d62a	Update of tests database ... Test for 0025930: thickness of spherical cap is invalid Test for 0025939: SIGSEGV in MakeThickSolid Test for 0025940: MakeThickSolid creates C0 continuous edges Test for 0026604: GeomFill_Pipe doesn't fit given bounds Test for 0026655: ChFi3d_Builder algorithm fails to build fillets if some input edges connect with seam edges Test for 0026697: BRepFeat_MakePrism returns empty compound Test for 0026716: Mesher cannot create a mesh of brep model due to ShapeFix_Wire::FixShifted() Test for 0026735: Adjacent perpendicular edges are detected as overlapped by DRAW command checkoverlap. Test for 0026793: General Fuse algorithm produces incorrect result Test for 0026795: Unable to perform General Fuse operation on the attached faces Test for 0026842: bopsection result does not contain any edges. Test for 0026882: Edge/Edge intersection algorithm produces incorrect result Test for 0026883: Wrong result of Boolean Operation Test for 0026889: Very poor mesh result from shape Test for 0026928: Edges are meshed too coarsly Test for 0026933: Section works unstably due to incorrect work of the method IsExistingPaveBlock Test for 0026943: Wrong projection of helix on cylinder by ShapeConstruct_ProjectCurveOnSurface Test for 0026957: Unify same domain operation is slow for multiple shells Test for 0026978: Interactive selection is insensitive to swept shell Test for 0027004: ShapeUpgrade_UnifySameDomain produces invalid result Test for 0026280: Mechanism 'ShapeFix' is unable to heal a shape Test for 0026282: Mechanism 'ShapeFix' has errors revealed by wire tool 'FixTails' Test for 0026291: BRepMesh produces mesh with gap on the attached shape Test for 0026382: BRepMesh produces internal nodes outside the face interior Test for 0027453: Wrongly meshed surface Test for 0027524: The command checkshape does not find the maximal deviation between curves representations Test for 0026225: Wrong result of chamfer in case of coinciding bound of chamfer's surface with bound of a face Test for 0026295: Sweep fails with BRepFill_ContactOnBorder Test for 0026374: GeomFill_Profiler fails to unify BSplines if one has knot distance less than PConf Test for 0026558: Failing to build isoline for offset surface Test for 0026563: Boolean cut operation in new API multi-tool mode performs fuse instead of cut Test for 0026568: Exception when creating pipe Test for 0027419: Incorrect result of Edge/Face intersection Test for 0027469: Regression vs 6.9.1: Wrong result of Edge/Face intersection Test for 0027471: Wrong result of pipe Test for 0027472: Wrong result of cut Test for 0027614: Sewing returns result with too high tolerance Test for 0026154: Visualization - v3d viewer grid disappears due to automatic z-fit Test for 0026174: Loss of color after the second write of file (iges).	2017-08-18 12:13:40 +03:00