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displacement behaviour

Posted: Thu May 29, 2008 4:41 pm
by tok
When I saw Kurt's steel rope on the materials board I felt like trying to create a bit more used one myself. On the standard model the result looked quite ok, but when I applied Kurt's and my material each to a simple pipe the displacement went mad. What's wrong with my files?

Image Image Image

Posted: Thu May 29, 2008 4:57 pm
by KurtS
Hi tok,

the main problem is that you did not subdivide your model. The triangles are very, very long - and will require extreme precision values and rendering times to look good. Open the file in Studio and enable "hidden line" to see the triangles. (The view mode "Hidden Line" is the only view mode that unhides the triangles. :?)

Posted: Thu May 29, 2008 5:13 pm
by tok
The long triangles again - sigh ... I really must get rid of Sketchup, but did not have the time yet to try something new.

Thank you, Kurt!

Posted: Fri May 30, 2008 10:39 am
by Tim Ellis
I had the same problem with my tests for this mxm.

Drop the offset to 0.000 and lower the displacement height, to match the scale of your 'rope' object. The displacement map in the mxm has a high white value, which if you clamp it in Photoshop to 200 using 'Levels' you will get a result that doesn't invert the mesh as much during displacement.

Also as said above, sub-divide the object too.


Tim.