Continuing to explore Touch… I came up with this brush that paints vegetation over other geometry. In addition, I did ink that spreads, I also implemented a propagation mode (feedback) for the “ink spill”. I was also able to make this propagation respect the rock’s slope using a threshold parameter: if the “slope” is steeper than the set value, the vegetation doesn’t advance—it goes around the incline until it finds a way to climb.
I’ll post more tests later in other situations, on other surfaces, and with other inputs.
The video is on my Instagram — follow me if you like the result.
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https://www.instagram.com/p/DUUmgB2j1cN/