FreeCADView Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0000363 | FreeCAD | Bug | public | 2011-05-28 01:20 | 2011-05-30 12:02 |
| Reporter | unauthenticated | Assigned To | |||
| Priority | normal | Severity | minor | Reproducibility | always |
| Status | closed | Resolution | fixed | ||
| Product Version | 0.11 | ||||
| Fixed in Version | 0.12 | ||||
| Summary | 0000363: Problem exporting in STEP format | ||||
| Description | Hi, I'm importing a triangle mesh (containing faces, vertices, normals, and indices) of .obj format to freeCAD, and then I export it to STEP format. And what I got is only few information and there's no geometry information in the exported file : ISO-10303-21; HEADER; FILE_DESCRIPTION(('FreeCAD Model'),'2;1'); FILE_NAME('D:/Home/EonStrife/fromFREECAD.stp','2011-05-28T10:36:02',( 'FreeCAD'),('FreeCAD'),'Open CASCADE STEP processor 6.3','FreeCAD', 'Unknown'); FILE_SCHEMA(('AUTOMOTIVE_DESIGN_CC2 { 1 2 10303 214 -1 1 5 4 }')); ENDSEC; DATA; #1 = APPLICATION_PROTOCOL_DEFINITION('committee draft', 'automotive_design',1997,0000002); 0000002 = APPLICATION_CONTEXT( 'core data for automotive mechanical design processes'); 0000003 = SHAPE_DEFINITION_REPRESENTATION(0000004,0000010); 0000004 = PRODUCT_DEFINITION_SHAPE('','',0000005); 0000005 = PRODUCT_DEFINITION('design','',0000006,0000009); 0000006 = PRODUCT_DEFINITION_FORMATION('','',0000007); 0000007 = PRODUCT('Open CASCADE STEP translator 6.3 1', 'Open CASCADE STEP translator 6.3 1','',(0000008)); 0000008 = MECHANICAL_CONTEXT('',0000002,'mechanical'); 0000009 = PRODUCT_DEFINITION_CONTEXT('part definition',0000002,'design'); 0000010 = SHAPE_REPRESENTATION('',(0000011),0000015); 0000011 = AXIS2_PLACEMENT_3D('',0000012,0000013,0000014); 0000012 = CARTESIAN_POINT('',(0.E+000,0.E+000,0.E+000)); 0000013 = DIRECTION('',(0.E+000,0.E+000,1.)); 0000014 = DIRECTION('',(1.,0.E+000,-0.E+000)); 0000015 = ( GEOMETRIC_REPRESENTATION_CONTEXT(3) GLOBAL_UNCERTAINTY_ASSIGNED_CONTEXT((0000019)) GLOBAL_UNIT_ASSIGNED_CONTEXT( (0000016,0000017,0000018)) REPRESENTATION_CONTEXT('Context #1', '3D Context with UNIT and UNCERTAINTY') ); 0000016 = ( LENGTH_UNIT() NAMED_UNIT(*) SI_UNIT(.MILLI.,.METRE.) ); 0000017 = ( NAMED_UNIT(*) PLANE_ANGLE_UNIT() SI_UNIT($,.RADIAN.) ); 0000018 = ( NAMED_UNIT(*) SI_UNIT($,.STERADIAN.) SOLID_ANGLE_UNIT() ); 0000019 = UNCERTAINTY_MEASURE_WITH_UNIT(LENGTH_MEASURE(1.E-007),0000016, 'distance_accuracy_value','confusion accuracy'); 0000020 = PRODUCT_TYPE('part',$,(0000007)); ENDSEC; END-ISO-10303-21; | ||||
| Tags | No tags attached. | ||||
| FreeCAD Information | |||||
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Correction : not a triangle mesh, but a quad mesh |
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That is because, I think, meshes are not taken into account by the Part module (responsible for exporting to brep, step and iges). I'm not sure how practical/easy it would be to export meshes to step format... |
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yeah..need to check the STEP documentation. So far, can't find any tools that can convert mesh to STEP..I wonder if it's impossible.. |
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One solution is to convert your meshes to Part shapes (via the Part->Make Part from Mesh command). Then they will be exported to STEP. But Converting meshes to parts can be a rather heavy operation that will only be interesting if your meshes are quite simple, otherwise the part objects will be almost unmanageable. |
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To make a BREP of a mesh object follow the way Yorik suggested. Afterwards you can export this object to STEP. I guess what you did is loading the quad mesh, selected it and tried to export this to STEP. However, the export function inside only checks for special objects and ignores all the others. I think it's better to print at least a message when an object is ignored. |
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Fixed in r4532. A message is printed when ignoring objects from being exported to STEP, IGES or BREP. |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2011-05-28 01:20 | unauthenticated | New Issue | |
| 2011-05-28 04:32 | unauthenticated | Note Added: 0000865 | |
| 2011-05-28 21:18 | yorik | Note Added: 0000866 | |
| 2011-05-30 00:02 | unauthenticated | Note Added: 0000872 | |
| 2011-05-30 11:35 | yorik | Note Added: 0000873 | |
| 2011-05-30 11:48 | wmayer | Note Added: 0000874 | |
| 2011-05-30 12:02 | wmayer | Note Added: 0000875 | |
| 2011-05-30 12:02 | wmayer | Status | new => closed |
| 2011-05-30 12:02 | wmayer | Resolution | open => fixed |
| 2011-05-30 12:02 | wmayer | Fixed in Version | => 0.12 |
