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akella/warp.glsl

Created December 23, 2018 08:42
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warp
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warp.glsl
vec2 warp(vec2 pos, vec2 amplitude)
{
pos = pos * 2.0-1.0;
pos.x *= 1.0 - (pos.y*pos.y)*amplitude.x * 0.2;
pos.y *= 1.0 + (pos.x*pos.x)*amplitude.y;
return pos*0.5 + 0.5;
}
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