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OnShapes imports .stp file with incorrect face vertex coordinates
dale_kramer
Member Posts: 6 ✭
I have an acsii text .stp file that imports into OnShape without parsing errors.
However, the coordinates of where 3 faces meet seems to be about 5mm out of position with respect to the value of the x,y,z coordinates for that intersection vertex that are seen the asci text of the .stp file.
I think the issue is better explained with these two images:
.
.
.
Here is the contents of the step file showing the results of a search for any X coordinate with +- 0.00000005 meters of the X coordinate which OnShape shows for the 'out of position' vertex:
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.
.
When I import the exact same .stp file into Rhino 5, the vertex visually appears positioned correctly:
.
.
.
When I search the asci text of the .stp file for the coordinates that Rhino reports for that vertex, 4 are found within 0.00000001 m of the Rhino point, which confirms that Rhino is importing the vertex correctly:
.
.
.
My conclusion is that OnShape is in error here and does not import the coordinates of that vertex correctly (it places that vertex ~5mm away from the correct location).
Is that a fair conclusion here and what can be done about it?
I have attached the raw ascii .stp file in question here...
However, the coordinates of where 3 faces meet seems to be about 5mm out of position with respect to the value of the x,y,z coordinates for that intersection vertex that are seen the asci text of the .stp file.
I think the issue is better explained with these two images:
.
.
.
Here is the contents of the step file showing the results of a search for any X coordinate with +- 0.00000005 meters of the X coordinate which OnShape shows for the 'out of position' vertex:
.
.
.
When I import the exact same .stp file into Rhino 5, the vertex visually appears positioned correctly:
.
.
.
When I search the asci text of the .stp file for the coordinates that Rhino reports for that vertex, 4 are found within 0.00000001 m of the Rhino point, which confirms that Rhino is importing the vertex correctly:
.
.
.
My conclusion is that OnShape is in error here and does not import the coordinates of that vertex correctly (it places that vertex ~5mm away from the correct location).
Is that a fair conclusion here and what can be done about it?
I have attached the raw ascii .stp file in question here...
0
Comments
Step file came by exporting .3dm file as step file from Rhino.
Is this the URL you want ?
https://cad.onshape.com/documents/2c09c9b07e32696bf5a8c224/w/f6098161c79f563a4cf2c690/e/a57ac176362298be74020792
"What happens if you export the good result from Rhino and import it into Onshape?" => It is still good BAD in OnShape (Sorry I originally said good here and just edited it to say BAD at 12:52 EST) which I would assume because the .stp is in existence since it was first created by an export from Rhino.
If you don't mind, how do I file a bug, I thought that is what this forum category was for?
Sorry, I am OnShape newbie ...
Sorry, I don't use either of those but I will look for some way to get access to them..
Is there a way to reference this topic in the bug report?