Multi-color material vray, using masks(?)

Rendering V-Ray
#1

I have one big mesh, and I want each node(A,B,C,D) to be rendered in a different color! more over I want the a gradient change of the color smoothly between the corners, for this rendering visual I need only the top view (left picture), but just showing you the right one so you understand it is a 3D mesh and the material will be transparent so I am expecting to see in ,multi-levels…

SEE THE EXAMPLE: render_top_perspective|690x419

#2

Hi @naama.glauber

Okay so it should be a fairly quick solution, steps below.

Step 1: create material and apply gradient to diffuse

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Step 2: Turn gradient to four corner creating 4 colours with 1/3 ‘position’ between them (0,0.33,0.66,1) and uncheck ‘tile U/V’
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Step 3: Create a square above all Geometry just a little bigger than everything. With everything selected apply a planar map using the square as a ‘bounding box’ guide (snap to the corners of the square).
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Step 4: enjoy :smiley:
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You can also use a Photoshop made gradient for better definition in corner colours.
240_F_137603789_J0fNLK976iDTlkHZ9lNf0bFRqt9XSBqc

#3

Thanks a lot Nicholas!

I have three more questions:

  1. I didn’t understand if what you said about the corner’s colours by photoshop is a post process? if not, where can I change it to specific colours?

  2. The results now are not sufficient for now, for what I searching and I’m wondering if there is a chance to use 4 different materials and combining them that way…?

  3. in case I have 5 or 6 corners (here I have only 4…) How can I use this procedure?

This is a really great help!
Naama

#4

Sorry spent way to long trying to work out if V-Ray could do exactly what you want.

  1. All I meant by the photoshop part was that instead of using a ‘gradient texture’ built in the V-Ray gradient node, you would instead make a gradient in photoshop then use it as a bitmap in your material.
    Not a post process, you just get more flexibility and colour definition in photoshop.
    So - Photoshop gradient - export png - import as bitmap to material - planar map material on objects
    Rather than - create material - make gradient in vray - planar map material on objects

  2. Honestly cannot find a damn thing on this, I can create a trillion textures on top of each other, but when it comes to specifying a corner for each texture and blending them you’ve had it.
    Best solution Photoshop, or substance painter, something along those lines.

    Blend%20material
    Blend material.jpg2100×2100 529 KB

    Would also work for normal maps, displacement etc…

  3. Photoshop again
    There’s a reason why in 3D there’s a program workflow, no single software can do everything.

Hope this in some way helps, also check out Chaos group forum, there’s specific sections for Rhino V-Ray :+1: