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Subject: going crazy (new model creating screw up?)

b16a1 opened this issue on Jul 16, 2002 ยท 8 posts
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b16a1 ( ) posted Tue, 16 July 2002 at 12:16 PM ยท edited Sat, 10 August 2024 at 2:16 AM

Well... I'm trying to model something new... But for some reason it won't import correctly... Here's the story: I made a new model in Cinema 4D, then exported it as an OBJ and did the whole PHIBuilding thing. I then load it into poser to find Parts of it showing backwards!?!?! I've had this problem before and now it happened again, so I tried using an existing poser figure. after simply exporting it from Cinema and reloading it in poser it has the same old problem. Now I think I'm doing everything right (even tried using UVMapper to redo the UV's) but it still shows some stuff backwards... ow: after rendering it does show up like it should... (but it makes posing it a living hell) anybody see what I'm missing ... or whatever is going wrong?

Valandar ( ) posted Tue, 16 July 2002 at 12:49 PM

It's that it's not exporting the normals correctly...

Remember, kids! Napalm is Nature's Toothpaste!

SAMS3D ( ) posted Tue, 16 July 2002 at 12:52 PM

Before you save your file in UV mapper, try clicking the check box, Reverse winding order in the OBJ export options screen and see if it helps. Sharen

b16a1 ( ) posted Tue, 16 July 2002 at 1:00 PM

YESSSSS,.... tnx... tried both, but the winding order did it!!! cool... now I can finally try to do some custom work :D

SAMS3D ( ) posted Tue, 16 July 2002 at 1:03 PM

Cool, I am glad it worked....that happens to us all the time too. Sharen

b16a1 ( ) posted Tue, 16 July 2002 at 1:10 PM

yeah we all have to start somewhere :) now to get the bones setup correctly... (read somewhere it might be a good shortcut to use a fake head / neck to do that... might be an idea?)

SAMS3D ( ) posted Tue, 16 July 2002 at 1:23 PM

geez, I guess, never tried that...Sharen

terminusnord ( ) posted Tue, 16 July 2002 at 1:58 PM

Normals are a funny thing. In a 3D file format, the direction that the polygon surface is facing (in or out) is typically determined either by the order of the vertices in the face--whether they are numbered in a clockwise or counterclockwise fashion--or by a separate piece of data which is the normal vector for each polygon. The wavefront OBJ format uses both of these techniques, which is what causes problems. Poser uses the vertices order, whereas other 3D programs prefer the normal vector data, and often their "invert normals" commands only affect the latter (thus having no effect in Poser) This is why UVMapper offers both ways to reverse normals. The winding way reverses the vertices order, which is what you need for Poser. -Adam

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