CAD Model Transfer Process: Difference between revisions
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From [http://www.designcad.com.au/drupal/sites/default/files/export_models.pdf, DesignCAD.com]: | From [http://www.designcad.com.au/drupal/sites/default/files/export_models.pdf, DesignCAD.com]: | ||
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If you have used SketchUp, you know that it works all the time in the | *If you have used SketchUp, you know that it works all the time in the | ||
3D environment unless you tell it otherwise. SketchUp encourages you | 3D environment unless you tell it otherwise. SketchUp encourages you | ||
to build your model in perspective mode and to apply materials to | to build your model in perspective mode and to apply materials to | ||
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parts to the model. | parts to the model. | ||
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SketchUp can do this because it builds its models | *SketchUp can do this because it builds its models | ||
using triangular meshes; many surveying packages do the same when | using triangular meshes; many surveying packages do the same when | ||
they are asked to create terrain models of land surfaces. Complex 3D | they are asked to create terrain models of land surfaces. Complex 3D | ||
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not used. | not used. | ||
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This fundamental difference in storing model geometry places severe | *This fundamental difference in storing model geometry places severe | ||
limitations on the model when it arrives in the CAD environment. | limitations on the model when it arrives in the CAD environment. | ||
The figure below shows the warehouse model above in the AutoCAD | The figure below shows the warehouse model above in the AutoCAD | ||
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translates these triangles to to 3DFACES. | translates these triangles to to 3DFACES. | ||
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<b>To See Figure Below, Click Link Above to Source</b> | <b>*To See Figure Below, Click Link Above to Source</b> | ||
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To sum up, we suggest that movement of models should be towards | *To sum up, we suggest that movement of models should be towards | ||
SketchUp from your CAD software, not the other way around. | SketchUp from your CAD software, not the other way around. | ||
[[Category:Process]] | [[Category:Process]] | ||
Revision as of 20:59, 11 October 2012
Resources
A tentative process for transferring 3D CAD Models between different platforms would be through *Autodesk's free FBX Converter.
From DesignCAD.com:
- If you have used SketchUp, you know that it works all the time in the
3D environment unless you tell it otherwise. SketchUp encourages you
to build your model in perspective mode and to apply materials to
surfaces as you go. Despite this level of sophistication, SketchUp still
operates very quickly, even on fairly modest computer equipment -
there is no noticeable deterioration in performance as you add new
parts to the model.
- SketchUp can do this because it builds its models
using triangular meshes; many surveying packages do the same when
they are asked to create terrain models of land surfaces. Complex 3D
entities such as Coons patches, surfaces of revolution and so on which
are used by software such as AutoCAD, IntelliCAD and MicroStation are
not used.
- This fundamental difference in storing model geometry places severe
limitations on the model when it arrives in the CAD environment.
The figure below shows the warehouse model above in the AutoCAD
environment after we had exploded it and selected one of the faces.
Note the appearance of many triangles. Incidentally, AutoCAD
translates these triangles to to 3DFACES.
*To See Figure Below, Click Link Above to Source
- To sum up, we suggest that movement of models should be towards
SketchUp from your CAD software, not the other way around.