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igs import ZSURF (#2329)
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dudko  
#1 Posted : Thursday, May 21, 2009 5:28:17 AM(UTC)
dudko

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Hi Tim and All,
I wonder punchcad can not correctly display this igs file.
There is a special option?
Reading the file also takes a long time!!!

Picture 1 = Import to VC6
Picture 2 = Import to other
Zip = igs.file

Best reg ED
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jdi000  
#2 Posted : Thursday, May 21, 2009 5:48:40 AM(UTC)
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Hi, Ed

Did you try to turn off auto heal and use the follow 3d option in the iges import?

What resolution is the object set at?


Regards

Jason
Windows 11, 10
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dudko  
#3 Posted : Thursday, May 21, 2009 6:45:35 AM(UTC)
dudko

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Hi Jason,
New screeshot with resolution "SuperFine", not satisfactory.
auto heal=off
optin=follow 3d

You have a better results ???

Reg'rds ED
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Steve.M  
#4 Posted : Thursday, May 21, 2009 8:16:50 AM(UTC)
Steve.M

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Hi Ed,

It is just a display problem due to poly count. You can force a change in the display.

A quick play gives the result shown in pic:-

I will post the steps if that is the result you are looking for?


- Steve
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Steve.M  
#5 Posted : Thursday, May 21, 2009 8:37:34 AM(UTC)
Steve.M

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Ed,

Here are the steps.

NOTE: this does not change the object type, only its display (poly count).

Pic 01. Original import. Right click the object and select "Change type" then select "Meshes"
Pic02 . Follow steps to change output, but ensure you press "Cancel" when changed.
Pic03, Result.

- Steve
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ttrw  
#6 Posted : Thursday, May 21, 2009 9:35:57 AM(UTC)
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Originally Posted by: Steve.M Go to Quoted Post

Pic02 . Follow steps to change output, but ensure you press "Cancel" when changed.


Crikey!! Can it get more complicated than this?? :confused: lol!
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Steve.M  
#7 Posted : Thursday, May 21, 2009 9:48:53 AM(UTC)
Steve.M

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Originally Posted by: ttrw Go to Quoted Post
Crikey!! Can it get more complicated than this??



:D:D

Its just the way VC/Shark creates the display meshes by default :D To keep poly count low for display update. As someone once mentioned, the display is a throw back to 386 era :D


- Steve
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dudko  
#8 Posted : Thursday, May 21, 2009 10:36:37 AM(UTC)
dudko

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:D
Thank you for instructions and screenshots.
Good work Steven, very tricky.

Regards ED
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Steve.M  
#9 Posted : Thursday, May 21, 2009 11:04:42 AM(UTC)
Steve.M

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Hi,

Hope the info helps.

I have been playing more, and there does appear to be a limitation with Acis/VC on meshing, as I can easily bring up errors/crashing when changing some settings

So please be cautious


- Steve
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zumer  
#10 Posted : Thursday, May 21, 2009 7:33:35 PM(UTC)
zumer

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ZSurf's IGES representation is very dense, with lots of control points. I've used PolyCAD with ZSurf IGES files to trim them and reduce the definition by deleting every second U and V row. Initially laborious, but it reduces file size and loading time dramatically. It's been pointed out to me before that PolyCAD is windows only.

*edit* just remembered that you can reduce the control point resolution of the IGES output by reducing the resolution of the picture you're processing in ZSurf. ie use a smaller picture and you won't need to change it to a mesh to change the parameters.
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zumer  
#11 Posted : Friday, May 22, 2009 1:10:31 AM(UTC)
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Originally Posted by: Steve.M Go to Quoted Post
Ed,



NOTE: this does not change the object type, only its display (poly count).


- Steve


I don't think that's right. ZSurf's IGES output is a spline surface, not a mesh. Whatever zoom level you use, it shouldn't display edges.
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Steve.M  
#12 Posted : Friday, May 22, 2009 11:58:03 AM(UTC)
Steve.M

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Originally Posted by: zumer Go to Quoted Post
I don't think that's right. ZSurf's IGES output is a spline surface, not a mesh.


To see an object in VC/Shark it needs to be rendered, and the rendering is done by facets/polgons being placed over the surface, otherwise you would not see a rendered surface :)

After importing the surf, change the display to wireframe, you will not see the actual surface, only its outline.

- Steve
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zumer  
#13 Posted : Friday, May 22, 2009 8:37:25 PM(UTC)
zumer

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Thanks, Steve, you're right. I was struggling to reproduce your steps and didn't cancel. I'll pay more attention.

murray
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dudko  
#14 Posted : Saturday, June 20, 2009 5:05:34 AM(UTC)
dudko

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Hi!
here is other trouble, when display isolines is on, see pict.

UserPostedImage
*
*
and after your edit this highresolution surface, the resolution changing automaticly back to lowresolution and must be new recalculated.
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Steve.M  
#15 Posted : Sunday, June 21, 2009 7:35:14 AM(UTC)
Steve.M

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Hi ED,

I can understand an auto regeneration of surface poly after changing such an option as isolines, so (IMHO) would expect it to revert to a default setting.

Tim as mentioned various possible changes to the display, so we will need to wait to see the outcome. In the meantime, manually changing this does not have issues.

Regards,

- Steve
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