52 lines
1.2 KiB
Markdown
52 lines
1.2 KiB
Markdown
## Spiral wave
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## [code](https://github.com/Bleuje/processing-animations-code/blob/main/code/spiralwave/spiralwave.pde)
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### comments
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(space to separate text from distracting gif)
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For the surface shape, we have a function that gives the 3D position by basically getting the height in function of position on 2D plane. This height is computed with a sinusoid and with a delay that's the distance to center + the angle to this center (obtained with atan2 function).
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A black mesh is drawn by drawing a lot of tiny triangles on the surface.
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Some particles with random parameters/positions are drawn on the surface, moving outwards (simply moving in lines in the 2D parameters input of the surface). The [replacement technique](https://bleuje.com/tutorial4/) is used, and its parameters make them move at different speed compared to the mesh wave.
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### more information and links
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Year: 2021
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On bleuje site: https://bleuje.com/gifanimationsite/single/spiralwave/
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On social media:
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- tumblr: https://necessary-disorder.tumblr.com/post/651898885464326144
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- twitter: https://twitter.com/etiennejcb/status/1470031412711641094
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