Hey, I am playing around with the shader-editor and want to do something like this.
Basicly… a gradient from the edges of a face (Tri, quad or n-gon) to its center.
I Already have achieved something … it kinda works with one triangled face but doesn’t exactly delivers.
is this even possible? I mean it should be, right?
Edit:
I left the second multiply in, even if its basiclly useless. Its a leftover from something that didn’t worked. However, it doesn’t change the outcome of the achievement.
So, you want the gradient to start from the edges of the object ?
Yes/no … I want it to start from the edges on a Face and if possible not only on Trigons but also on N-Gons
Since I need it for flat planes, I am not sure if this is a suitable solution.
I will chek ti out anyways.
Oh, I understand now it’s an ngon in your example. I thought they were multiple triangles. Hmmm, there might be a way to do it in geonodes by subdividing the geometry. I’m not sure.
Best I could do :
gradient_poly.blend (932.3 KB)
It doesn’t work very well with ngons because of the way the subdivision process interpolates attributes, but there may be a way around that, using topology checks. I don’t have time to investigate further.
I tried to do it in shader as well but no luck so far, the parametric coordinates aren’t sufficient, they will always output triangles.
edit If the subdivide node were to output new geometry as an anonymous attribute, we would be set…
Not procedural, but- lightmap pack with a large margin. In texture paint mode, make an image texture. fill all faces with white. Open that image texture in a photo editor- affinity photo, photoshop, etc. Select all the white. Shrink your selection, and fill the new selection with black. Deselect everything and add a Gaussian blur until the gradient looks right
this user seems to have achieved the effect in Blender 2.79.
However, he reports of it not being possible anymore.
https://blender.stackexchange.com/questions/142460/gradient-following-the-shape-of-a-face
@tichy i just tried this and it works perfectly, does it have to be procedural? If you just care about the end result, this is probably the best you’re going to get visually
do you mean your proposed solution with the lightmap packs?
Not yet. I will.
However, I would like to do it procedurally
Could a Fresnel node do it?
No, not per face. There’s no way to do this procedurally per face because shading data is stored in triangles
