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I'm trying to animate an expanding circle as a texture on a sphere. I've tried using a wave texture, but that doesn't seem to be working. It has to start as a point (very small circle), then expand out a little way like a rock dropped in a pond (with no waves) and then disappear. The coordinates it starts on as well as its maximum size has to be random and repeat. It has to fade out at maximum size.

I'm stumped. Can this be done with anything but a custom written procedural?

Thanks!

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  • $\begingroup$ It's fairly simple to make one sequence animated manually, but changing location in repetitive manner could be quite tedious (by hand). If you want I can make an answer with manual setup - only one sequence. $\endgroup$ – cgslav Oct 16 '17 at 23:06
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circle texture demo

Use a gradient node and modify its color with a ramp node.

sphere texture nodes

Then drive its location with an empty.

empty driver

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  • $\begingroup$ That's great, could you mark the answer as accepted? $\endgroup$ – 3pointedit Nov 9 '17 at 8:07

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