View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0022618 | Open CASCADE | OCCT:Visualization | public | 2011-06-21 22:03 | 2023-08-01 15:09 |
| Reporter | Assigned To | ||||
| Priority | low | Severity | feature | ||
| Status | assigned | Resolution | open | ||
| OS | All | ||||
| Target Version | Unscheduled | ||||
| Summary | 0022618: Visualization - Tool for building generic wireframe representation of a face | ||||
| Description | The problem of building a wireframe representation (a set of polylines for the face' edges and isolines) of a topological face is not new at all. 1. Currently, there are several similar classes in OCCT in StdPrs and Prs3d packages. The complete set of such classes is to be identified and listed in this bug. One more similar tool can be found in SALOME GEOM module. AIS_Shape class currently use StdPrs_WFDeflectionRestrictedFace class (through Prs3d_WFShape) for this purpose. But this class does not build a generic wireframe mesh containing points and polylines. Instead, it fills Prs3d_Presentation with internal OCCT data. Thus it is extremely difficult to reuse this class outside OCCT 3D viewer. SALOME GEOM module uses OCC2VTK_WireframeFace class to build wireframe representation for VTK viewer. This class uses slightly different (at the first glance) implementation of isoline building algorithm. It is not generic, either, as it fills VTK data structures. Meanwhile, sometimes it is necessary to have wireframe representation in the form of generic polylines, to pass it to some third-party 3D engine or just to avoid dependency on SALOME. Today the most straightforward solution is copy/paste-based... 2. The idea is to compare the existing implementations and create a generic tool somewhere, presumably at the level of BRepMesh package. The name of such a tool is to be discussed (I suggest something like BRepMesh_IsoBuilder). This tool should fill generic data structures, such as a list of Poly_Polygon3D containers. In case if Poly_Triangulation is available for the underlying face, it looks very interesting to analyze the possibility of building the polylines on the triangulation and creating Poly_PolygonOnTriangulation containers instead, so as to use exactly the same discrete geometry as for shaded face representation, that would minimize visual artifacts when wireframe and shaded representations are combined in a 3D scene. However, such optimization is to be analyzed carefully. 3. Finally, AIS_Shape should be migrated to this new tool, and obsolete StdPrs and Prs3d classes should be removed. The same procedure could be also applied to OCC2VTK_WireframeFace if necessary. | ||||
| Tags | No tags attached. | ||||
| Test case number | |||||
| related to | 0023519 | closed | bugmaster | Community | Mixing wireframe and shaded visualization impacts performance |
| related to | 0022877 | closed | bugmaster | Open CASCADE | Draw Harness - add plugin for VIS component |
| related to | 0025300 | closed | Open CASCADE | Visualization - Build wireframe representation consistent with the shape's triangulation | |
| related to | 0027596 | closed | bugmaster | Open CASCADE | Visualization, StdPrs_WFShape - pack isolines into single group of primitives |
| related to | 0030599 | assigned | Open CASCADE | Visualization - implement StdPrs_SectionLines tool | |
| related to | 0031973 | new | Open CASCADE | Visualization - deprecate StdPrs_WFDeflectionRestrictedFace tool | |
| related to | 0023984 | closed | bugmaster | Open CASCADE | Incorrect visualization of wires in wireframe mode |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2011-08-02 11:24 | bugmaster | Category | OCCT:VIZ => OCCT:Visualization |
| 2011-10-03 14:39 |
|
Fixed in Version | EMPTY => |
| 2011-10-03 14:39 |
|
Target Version | => 6.5.3 |
| 2011-10-03 14:39 |
|
Description Updated | |
| 2012-03-22 06:38 |
|
Target Version | 6.5.3 => 6.5.4 |
| 2012-10-20 10:15 |
|
Assigned To | bugmaster => san |
| 2012-10-20 10:15 |
|
Status | new => feedback |
| 2012-10-20 10:20 |
|
Target Version | 6.5.4 => Unscheduled |
| 2012-10-27 03:50 |
|
Description Updated | |
| 2012-10-27 03:52 |
|
Status | feedback => assigned |
| 2012-10-27 03:53 |
|
Assigned To | san => abv |
| 2012-10-27 03:53 |
|
Status | assigned => feedback |
| 2012-10-29 09:12 |
|
Assigned To | abv => san |
| 2012-10-29 09:12 |
|
Status | feedback => assigned |
| 2012-11-15 20:36 |
|
Relationship added | related to 0023519 |
| 2014-02-13 11:20 | kgv | Priority | normal => low |
| 2014-02-13 11:21 | kgv | Relationship added | related to 0022877 |
| 2014-02-17 15:24 | kgv | Product Version | => 7.0.0 |
| 2014-02-17 15:24 | kgv | Product Version | 7.0.0 => |
| 2014-02-17 15:24 | kgv | Target Version | Unscheduled => 7.0.0 |
| 2014-02-17 16:26 | kgv | Relationship added | related to 0023984 |
| 2014-09-29 22:36 | kgv | Target Version | 7.0.0 => 7.1.0 |
| 2014-09-30 19:44 |
|
Relationship added | related to 0025300 |
| 2016-06-16 20:47 | kgv | Relationship added | related to 0027596 |
| 2016-10-25 09:38 | kgv | Target Version | 7.1.0 => 7.2.0 |
| 2017-07-20 10:52 | kgv | Target Version | 7.2.0 => 7.4.0 |
| 2019-05-07 11:44 | kgv | Relationship added | related to 0030599 |
| 2019-08-13 12:04 | kgv | Target Version | 7.4.0 => 7.5.0 |
| 2019-09-04 12:08 | kgv | Summary | Tool for building generic wireframe representation of a face => Visualization - Tool for building generic wireframe representation of a face |
| 2020-09-21 17:20 | kgv | Target Version | 7.5.0 => 7.6.0 |
| 2020-12-03 15:34 | kgv | Relationship added | related to 0031973 |
| 2021-08-24 14:26 | kgv | Target Version | 7.6.0 => 7.7.0 |
| 2022-08-17 11:57 | kgv | Target Version | 7.7.0 => 7.8.0 |
| 2023-08-01 15:09 | dpasukhi | Target Version | 7.8.0 => Unscheduled |
