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anisotrophy shader animation problems
hi,
so i’m using one of the built-in shaders with anisotrophy to make it appear like a brushed metal. the problem is when i animated the texture, each frame radically changes the “lines” in the brushed metal, making it appear like noise. i’m having trouble understanding why it’s doing this/how to fix it. any information?
thanks,
-mike
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5 Replies
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More info please, which shader? What anisotrophy settings? Animated how? Post an example?
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its the danel shader. i started off using one of the ‘radial’ presets and tweaked the projection mode to auto planar and some other settings to get a flat brushed metal look. here’s a clip illustrating the problem i’m having. once the logo setttles at the end, the shader radically changes every frame…due to the ‘scratches’ and lighting? i’m assuming? i got some reasonably better results by raising the attenuation setting to about 1000%, but lost most of the scratches. i then raised the scale to about 200% and got some of the look back, but not the same.
https://client.montgomerycreative.com/aplequest/media/quicktimes/preview_render01_0328.mov
thanks,
-mike
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What is the projection of the texture? It looks like the texture is not rotating with the object. Can you post the scene?
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the texture has spherical projection, and the shader anisotrophy has auto planar projection.
here is a link where you should be able to download the scene. its c4d 9.6.
https://client.montgomerycreative.com/aplequest/media/quicktimes/0328_logo.c4d
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was playing with it, haven’t had time in the last bit but it was looking like it’s a function of anisptrophy. Even a straight picture bump map has more movement with object (or light movement) than you would expect. With a picture based bump/specular map it’s much quieter ‘side to side’ though. So I would go with that or tighten the scale a lot smaller so the appearant light movement across the surface is less disturbing.
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