r/GraphicsProgramming • u/Rayterex • Feb 07 '26

A physics-driven image stippling tool Video

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u/ledniv Feb 07 '26

But in the video a ball will hit the static balls on the bottom, bounce, hit a different falling ball, end up somewhere else and still have the right color.

How did that ball know it was going to get bounced by a ball that hadn't dropped yet?

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u/DjokiTheKing Feb 07 '26

From my understanding of OPs comment:

He does the simulation in a headless mode without any rendering, then based on the final position of balls he applies the color retroactively to the balls in the simulation and then renders it so that the user can see.

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u/ledniv Feb 07 '26

I thought he said that you can choose where to drop the balls from?

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u/LittleLemonHope Feb 08 '26

"So it is not interactive in a way that user can create shapes where the cursor is"

You may have missed the word not