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Radiosity + Ray trace truble
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  • Joined: 06 November 2007 09:03 AM

Hi,

I have a trouble with a file. I’m mixing radiosity (diffuse surfaces) and ray traced (specular surfaces) objects in the same scene. The RS objects are illuminated with photometric free point lights. And the RT objects are excluded from advanced lighting, but they use the same photometric lights. I’ve used this technic in the past and It works but now I’m in trouble. The photometric lights don’t affect the specular objects. Several of them looks totally dark. The RT objects must to be lighted and rendered without the radiosity solution. What am I doing wrong?. I’m working with 3D Max 6.

Tnanks in advance.

Ricardo.



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Can you post a stripped down, zipped version of the file?



Tim Wilbers [FA]

College of Arts and Sciences
Department of Visual Arts
University of Dayton
http://www.udayton.edu/
3ds Max: 7.5, 8, 9, 2008, 2009, 2010

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Off course.

Thanks.



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I’m analyzing my trouble and it’s about the diffuse maps or colors. When I used raytraced materials with high specular levels the objects generate relfections, but seems to be wihout color. I don’t know if the photometric lights don’t work pretty good with raytraced materials.

Regards.



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Yes, it appears that no light is hitting the three RT objects.

I’m missing the maps.
I selected each of the 3 RT- objects in turn and added the materials in the Material Editor and reassigned them to the objects, just to be sure I had the right materials on the correct objects.
Only the one Raytrace material has bitmaps, and I turned those off.

I selected FPoint01 (instanced with the other 34) and went to Include in General Parameters rollout. In the Exclude/Include dialog, switch Include to Exclude. Caluculate the Radiosity solution and render.

This is what I got.



Tim Wilbers [FA]

College of Arts and Sciences
Department of Visual Arts
University of Dayton
http://www.udayton.edu/
3ds Max: 7.5, 8, 9, 2008, 2009, 2010

Attachment Attachment
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Here it is with your Blanco Mate material set to 0,0,255 for the Diffuse color.



Tim Wilbers [FA]

College of Arts and Sciences
Department of Visual Arts
University of Dayton
http://www.udayton.edu/
3ds Max: 7.5, 8, 9, 2008, 2009, 2010

Attachment Attachment
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A simple two questions:

Which are the effects of photometric lights on specular objects trought radiosity solution?. I noticed two things: the bitmaps looks overexposed or sometimes dark. 

What I can do with my model. Should I generate an altenative standard lighing system to my specular obejcts?.

Thanks in advance.



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