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simple UV
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Post by andras // Feb 19, 2008, 10:36am
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andras
Total Posts: 111
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Hi:jumpy: again !
I imported an object with UV from Blender. I use OBJ luuv-script.
And here is the result: The whole object is black. Why?
http://www.andras2.extra.hu/UVb.JPG |
Post by TomG // Feb 19, 2008, 11:02am
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TomG
Total Posts: 3397
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Can't quite see what the object is - it looks a little odd with its geometry for one thing (the different colored areas in the real-time grab suggest the renderer is having a hard time figuring out what the surface is meant to be, so could be problematic geometry).
Lots of things to try. Repaint it with a different material in case the material settings happen to have the shaders all zero. Apply a UV map to it in case the UV map was not exported from Blender.
Next try Fix Bad Geometry tool and see what happens. Then try boolean subtract with a cube that is not touching the object, with delete edges enabled, see if any errors come up. Try flipping the normals see if it renders then.
Next try selecting all the faces on one side of the object and sweeping them.
Also look to see if there are options in the Blender export for OBJs, and try adjusting those. You may want to sweep the object in Blender (it does look like a single flat piece of geometry, and that could give some bad geometry issues - if swept into something more solid before being exported it may avoid those problems).
Let us know what happens with these tests :) A wireframe view of the object might be helpful too in this instance, to better see what is going on with the geometry.
HTH!
Tom |
Post by prodigy // Feb 19, 2008, 12:45pm
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prodigy
Total Posts: 3029
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Hi, My vote is for Tom's point number 2..
Luv, has problems with vray materials that's why when you render, the image is black.
Try pick your color and reselect the reflectance shaders.. that may solve the problem...
Good luck |
Post by hultek43 // Feb 19, 2008, 9:58pm
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hultek43
Total Posts: 234
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I imported an object with UV from Blender. I use OBJ luuv-script.
Any error messages when importing? |
Post by Tiles // Feb 19, 2008, 10:20pm
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Tiles
Total Posts: 1037
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Blenders OBJ exporter is a bit buggy i found. Doesn't export normals for example, even when ticked. So i would blame Blender in this case here, not LUUV.
For the black object, did you have a texture applied at this object at all? Shaders rarely transfer between different software. And so you get a black object then. |
Post by jamesmc // Feb 20, 2008, 1:29am
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jamesmc
Total Posts: 2566
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I know that objects that I import from other application, the Diffuse is way too dark.
In the image below, note that on objects 1 and 2 (the top two) the UV's did not import correctly and the diffuse is way too dark (0.3)
In the second row, I increased the Diffuse on the middle left object to 0.76 and left the diffuse on the middle right object at 0.3. Both items were UV'd in trueSpace with cubic projection.
The bottom cube is a caligari cube with the texture painted on and UV'd in Caligari. The diffuse was left at 0.3
rendered in Vray |
Post by andras // Feb 20, 2008, 1:42am
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andras
Total Posts: 111
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:banana:
Five point to Prodigy and Jamesmc...Thanks...The shader was faild:
http://www.andras2.extra.hu/1b.JPG
http://www.andras2.extra.hu/2b.JPG |
Post by prodigy // Feb 20, 2008, 3:23am
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prodigy
Total Posts: 3029
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Cool, glad to help :) |
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