CGTalk - How do hooks work?

amsmf

08-25-2003, 02:58 PM

Has anyone heard from Arthur Walasek? I'm trying to use his obj Importer/exporter and I'm finding that my models are breaking up at the points where hooks exist. The mesh will be okay until it gets to a hook, where it turns the hook into a vertice which is not connected to the edge the hook was originally connected to. This creates "holes" in the mesh.

If not for this issue I think I'd have some ease with exporting.

Ran13

08-25-2003, 05:06 PM

Poly-based apps have no idea what a "hook" is.

Whether you export as OBJ, 3DS, or any other poly-based format, what you are seeing will occur. The solutions are:

1) don't use hooks if you plan to export to a poly-based format. You can use 5-point patches, but plan to close the holes manually.

2) if you MUST use hooks, put them in a place that will not distort when animated. That way the split edge will never reveal itself.

hoochoochoochoo

08-27-2003, 04:13 PM

if you are exporting to something that can edit the mesh then leave holes that you can close up in your poly app.

It's often a lot more trouble to find and repair ALL those hooked or 5 point patches after they turn into polygons...

CGTalk Moderation

01-15-2006, 11:00 PM

This thread has been automatically closed as it remained inactive for 12 months. If you wish to continue the discussion, please create a new thread in the appropriate forum.