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+--- Thread: object emission problem (/showthread.php?tid=1076)
object emission problem - sasmitr - 10-18-2010
Hi,
I am trying to emit smoke from geometry but i get jagged edges around the surface of the geometry.
Attached is the file which shows the undesirable texture on any object.
Regards.
Re: object emission problem - jrand - 10-19-2010
Looks like the polygons on the emission geometry to me. Increase the face count.
Re: object emission problem - sasmitr - 10-19-2010
Hi,
tried increasing the face count but only the pattern of the emission gets refined but its still there. Also tried simulating with very high spacing value still its does not gets solved. I tried also increasing the jitter value in the render dialog which somewhat helps but does not solve the problem.
Regards.
Re: object emission problem - sitnisati - 10-19-2010
Hello,
Is that sphere present in rendering ?
If so, what happens when you hide it ?
Kresimir
Re: object emission problem - sasmitr - 10-19-2010
Hi Kresimir,
The sphere is hidden during rendering.
regards.
Re: object emission problem - FabianB - 10-19-2010
Looks like a self-shadowing problem to me! Try to increase the jitter on the shadows!
Re: object emission problem - sasmitr - 10-20-2010
No its not a self-shadowing problem. Tried changing the shadow type as well as increasing the jitter amount. The texture appears to form on the surface of the emitting object.
Re: object emission problem - sitnisati - 10-20-2010
Geometry is voxelized and this is something hard to avoid.
Did you try rendering with step size 20 and jittering 100, that should improve it ?
Kresimir
Re: object emission problem - sasmitr - 10-21-2010
Hi,
It does not seem to very much improve the quality of the render. When the object is close to the camera it gives very ugly results. Any tips as to how to emit smoke from object without getting the artifacts.
Regards.
Re: object emission problem - FabianB - 10-22-2010
sasmitr Wrote:Hi,
It does not seem to very much improve the quality of the render. When the object is close to the camera it gives very ugly results. Any tips as to how to emit smoke from object without getting the artifacts.
Regards.
Yes, use a noise map for emission, real smoke would never emit that evenly.
Re: object emission problem - sasmitr - 10-23-2010
Hi,
tried that on different test. But it seems the smoke emitting from the part of object seems voxelized.
Regards.
Re: object emission problem - FabianB - 10-23-2010
Hey I made some tests and was able to replicate your problem!
It's easy to fix with the smoke afc:
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