I'm searching for a way take a an image, or a portion of an image on a webpage and render this or a similar animation effect, where the image is "wavy". Examples:
the "spirit" area:
the robe area:
the robe area:
Preferably I'd like to control the speed and modulation of the waves parametrically.
To me it looks like some sort of displacement map. I thought about either using a fragment shader threejs \ seriously.js or using a canvas element to achieve the same image manipulation, but I'm unsure of the algorithm to use.
What would be a way to achieve this?
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