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General => Terragen Discussion => Topic started by: Volker Harun on January 20, 2016, 03:15:12 AM

Title: OBJ Mapping conversion
Post by: Volker Harun on January 20, 2016, 03:15:12 AM
I am running into a problem, that I used to have a workflow for. But I lost that knowledge ;-)

Having an OBJ from Groboto, it does not shade properly in TG2. The shading applies to the OBJ's faces as a single colour/displacement.

I used to import it to a 3rd-Party-App, exported it and remapped in Blender.
With Blender as standalone I have no success.

What am I missing?
Do I have to triangulate the faces? Any mysterious UV-Stuff, that I refuse to know? Any App, that does this magic for me without the need to remap the OBJ?

Thanks in advance,
Volker ;-)
Title: Re: OBJ Mapping conversion
Post by: Dune on January 20, 2016, 03:23:56 AM
I think it doesn't export normals, so best try is to take trhough Poseray and recalculate normals. It will get heavier though. I have the same with a thatched roof (hair fibres) I'm exporting from ZBrush. Does look awful (flat) in preview in TG. But it renders well, strangely.
Title: Re: OBJ Mapping conversion
Post by: Volker Harun on January 20, 2016, 03:54:21 AM
I'll try poseray later this day ... thanks for the idea :-)
Title: Re: OBJ Mapping conversion
Post by: Volker Harun on January 20, 2016, 06:41:58 AM
I disabled the UV-Export in Groboto and the procedural shading of objects works now :-)
Title: Re: OBJ Mapping conversion
Post by: bobbystahr on January 20, 2016, 01:18:40 PM
Quote from: Volker Harun on January 20, 2016, 06:41:58 AM
I disabled the UV-Export in Groboto and the procedural shading of objects works now :-)

Good to know that  about Groboto...thanks for sussing it out.
Title: Re: OBJ Mapping conversion
Post by: j meyer on January 20, 2016, 01:25:39 PM
Bobby - it's not Groboto specific - if you want to shade your model procedural
you don't want it to be UV mapped or you have to use world space. It's always the same.
Just like here
http://www.planetside.co.uk/forums/index.php/topic,20209.msg199715.html#msg199715
;)
Title: Re: OBJ Mapping conversion
Post by: bobbystahr on January 20, 2016, 02:44:53 PM
Thanks jochen...I suspected as much as I have started overcoming my fear of my colourblindness and bashing on with the ever useful Power Fractal shader.