So I thought recently, what if I used Bump Maps to distort Textures like a lens:
The intuition behind how this works is that we…
- Take a Bump Map
- Feed it into the Bump Node so we can acquire our new, bumpy Normals.
- Project it back into UV Space by using the relationship between the x-coordinate in UV Space and the uv-generated Tangent.
- Then we can use it to distort our UV position vector, and in turn, the “Vector” input on our texture.
Here are the “active ingredients”:
And the “inactive ingredients” (i.e. all the stuff I did for this specific example: including the procedural crosshatch texture, the little white splotch that I used for the Bump Map, etc.),
The .BLEND file, for the curious among ye!
“Bump Lensing” bump_lensing.blend (618.4 KB) [Blender 2.79b File]
Curious to see if anyone might adapt, improve, or what have you Peace and God bless!