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smoothing materials within one object
Hi,I am new to the forum and relatively new to Cinema, please forgive any possible posting transgressions before hand. I have reached a stage that I could not figure out in Blender; hence the change to Cinema!
I have set up a plane (40×40 squares) and have divided it into two polygon selections (left side 24×40 & right side 24×40; I have overlapped them in hopes of blending the two together for a smooth transition). I have one material on the left (water) and another on the right (Mabel shader). Rendering produces expected results, one material ends and the other begins.
My question is haw do I merge these two together so that they blend together creating a smooth transition from one to the other. This is a stage of materials I have never been able to figure out. Thank you for any help you would be willing to extend! Attached is a screen shot of what the interactive render looks like now.
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4 Replies
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You can either do it with two materials or with one material employing the layer shader.
In the former case you would stack the materials on your object. The second material would have a gradient in the alpha channel to accomplish the blend.
In the latter case you would use a gradient as a layer mask to blend between your two shaders.
Example: 1421_blendmats.c4d.zip
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extremely helpful…thank you! I stumbled on the first way, you showed me another way. What I am working my way towards is being able to do this in only small areas. Say If I had a flat chunk of steel with several spots of rust and/or corrosion sporadically located throughout the plan. With the manner shown I could have rust on one side and clean steel on the other…but not very realistic “per say”. How could I set this up so that these spaces of rust blend into the surrounding “clean steel”? I created an alpha channel in Photoshop and applied that with the attached results. Is this simply the only way of achieving this effect?
In this picture the alpha channel was the darker rust while the light area was the actual painted metal (needs work I know but this is for learning purposes!) Any suggestions or ideas? I guess I was hoping there was an internal method for being able to make all those spots and then blend into the parent (under) material…are these imported alphas simply the way to go?
Nice work by the way and thank you very much!!!!
J
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Nice material!
I think using those kind of alphas (sometimes called grunge maps) is probably the best way to get realistic results. You can also use combinations of procedural noises as layer masks or alphas.
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Cineversity has a number of free tutorials about texturing. General 3D – Reference/Materials And Textures
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