very new to blender and not an expert. Coming from engineering field and want to learn more about rendering CFD/model results in Blender.
Right now I am struggling with adding a coloramp to a surface. I want the color to be based on the x/y/z values of the node coordinates. For example if I want to plot a water surface, I want it to be colored by z-value.
What I've done so far is:
- Created a plane mesh
- Added displacement modifier to the mesh to give it some bumpiness (z-values)
- In the shading editor, I added a Texture Coordinates node -> mapping node -> separate xyz node -> coloramp node -> principle bdsf node -> material output node
My node shading node set up is below.
Right now, when I use separate xyz node to color by x it works fine, and also by y. But if I choose z I get no coloring even though there is definitely z values?
Can anyone explain to me why this isn't working and how to get it working by coloring the surface using a colormap based on z values of the nodes?