16 lines
514 B
GLSL
16 lines
514 B
GLSL
/*
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contributors: Hugh Kennedy (https://github.com/hughsk)
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description: Circular in/out easing. From https://github.com/stackgl/glsl-easings
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use: circularInOut(<float> x)
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examples:
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- https://raw.githubusercontent.com/patriciogonzalezvivo/lygia_examples/main/animation_easing.frag
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*/
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#ifndef FNC_CIRCULARINOUT
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#define FNC_CIRCULARINOUT
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float circularInOut(in float t) {
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return t < 0.5
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? 0.5 * (1.0 - sqrt(1.0 - 4.0 * t * t))
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: 0.5 * (sqrt((3.0 - 2.0 * t) * (2.0 * t - 1.0)) + 1.0);
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}
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#endif
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