0001906: add Parameters isRelative, theAngDeflection of BRepMesh_IncrementalMesh in MeshFromShape Gui command - FreeCAD Tracker

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ID	Project	Category	View Status	Date Submitted	Last Update

0001906	FreeCAD	Feature	public	2015-01-08 14:53	2017-09-30 14:16

Reporter	shoogen	Assigned To	wmayer
Priority	low	Severity	feature	Reproducibility	N/A
Status	closed	Resolution	fixed
Fixed in Version	0.17

Summary	0001906: add Parameters isRelative, theAngDeflection of BRepMesh_IncrementalMesh in MeshFromShape Gui command
Description	expose the additional Parameters isRelative, theAngDeflection of BRepMesh_IncrementalMesh in MeshFromShape taskview gui command.
Tags	Mesh, Task View

FreeCAD Information

wmayer 2015-01-11 12:23 administrator ~0005612	Note, in order to create a mesh from a shape the function StlTransfer::BuildIncrementalMesh is used because this creates a valid mesh. However, the problem is that StlTransfer::BuildIncrementalMesh doesn't offer the requested additional parameters. The class BRepMesh_IncrementalMesh may produce triangles where a vertex of one triangle lies on an edge of another triangle which is not allowed for a valid mesh. Since the output triangles of this class is used for display purposes it doesn't matter.

shoogen 2015-01-12 11:23 developer ~0005631	We could either assure that the shape has allready a triangulation with the wanted angular deflection. Or ask OCCT to change https://github.com/tpaviot/oce/blob/master/src/StlTransfer/StlTransfer.cxx#L120

shoogen 2015-01-17 14:16 developer ~0005666	> The class BRepMesh_IncrementalMesh may produce triangles where a vertex of one triangle lies on an edge of another triangle Are you sure whether this is still the case? http://tracker.dev.opencascade.org/view.php?id=25357#c36174

wmayer 2015-01-17 14:53 administrator ~0005667	No. But anyway, one has to duplicate the whole code of StlTransfer::BuildIncrementalMesh just to be able to pass the angle deflection.

shoogen 2015-02-05 22:56 developer ~0005768	> But anyway, one has to duplicate the whole code of StlTransfer::BuildIncrementalMesh just to be able to pass the angle deflection. From OCCT 6.8.1 on this will not be an issue anymore. https://github.com/5263/FreeCAD/commit/086201a2ee5a3c60044faeecfdc8e7a2c988b7f8 git://github.com/5263/FreeCAD dev-stlmesh

wmayer 2017-09-30 14:16 administrator ~0010220	https://github.com/FreeCAD/FreeCAD/commit/93c32f0aa93ec622c38293fce9cf7b69c124f778

Date Modified	Username	Field	Change
2015-01-08 14:53	shoogen	New Issue
2015-01-08 14:53	shoogen	Tag Attached: Task View
2015-01-08 14:54	shoogen	Tag Attached: Mesh
2015-01-11 12:23	wmayer	Note Added: 0005612
2015-01-12 11:23	shoogen	Note Added: 0005631
2015-01-17 14:16	shoogen	Note Added: 0005666
2015-01-17 14:53	wmayer	Note Added: 0005667
2015-02-05 22:56	shoogen	Note Added: 0005768
2015-02-12 13:30	wmayer	Changeset attached	=> FreeCAD Master master cd771f65
2017-02-10 09:59	wmayer	Assigned To	=> wmayer
2017-02-10 09:59	wmayer	Status	new => assigned
2017-09-30 14:16	wmayer	Status	assigned => closed
2017-09-30 14:16	wmayer	Resolution	open => fixed
2017-09-30 14:16	wmayer	Fixed in Version	=> 0.17
2017-09-30 14:16	wmayer	Note Added: 0010220