Indigo Renderer Forum

Hello,


can someone tell me if this is a bug?




The black border does not seem ok for me.

Regards

Phil

I'd say those normals are facing the wrong direction. I don't know what modeler you use, but try flipping all normals to the outside.

Thanks skypa,

I will check the normal this evening, but I don´t think they are wrong.
I use Pro/Engineer as modeller and than I export in obj, then Blender and then Indigo.
For me it could be a shadow, but it really looks strange.
The 2 parts have nk material and are very reflective, could this be a problem?
I wil ljust try to render the picture longer, perhaps this will help.

regards, Phil

Have you tried rendering it in blender and seeing if the same problem is there?

Also which two nk files did you use?

You could also try to render it with a diffuse material or other light conditions to see whether it is a normal or lighting (shadow) problem.

[quote="Phil"]Hello,


can someone tell me if this is a bug?


[img]http://img62.imageshack.us/img62/1700/test1xt2.png[/img]

The black border does not seem ok for me.

Regards

Phil[/quote]


Is there a space between the mirrored disk and the mirrored support brackets? If there is a space then the dark area may be the space not getting light. Or reaching the max bousnce amount. Just a thought. Us a diffused surface to see what that looks like.

Hi m1j,

yes theres is a space, I am just investigating this.
What do you mean with "reaching the max bousnce amount"

@ all, is in indigo the same problem like in povray when we have too much reflective surfaces?

regards, phil

Hi,

I made some new render, and I changed the material bracket.

in the first picture the material were:

<phong>
<nk_data>nkdata/Al.nk</nk_data>
<exponent>4000</exponent>
</phong>

for the bracket and

<phong>
<nk_data>nkdata/Cr.nk</nk_data>
<exponent>9000</exponent>
</phong>

for the wheel

Now I changed the bracket material in:
<phong>
<diffuse>0.7 0.7 0.7</diffuse>
<specular>0.149 0.149 0.149</specular>
<fresnel_scale>0.800</fresnel_scale>
<exponent>320.000</exponent>
</phong>

Here is the result



Now I can clearly see that there is a shadow, it is not black anymore.

It is a bit difficult to find the good parameters.

Thanks for you reply,

Phil