LYGIA Shader Library

elasticInOut (lygia/animation/easing/elasticInOut)

Elastic in/out easing. From https://github.com/stackgl/glsl-easings

Dependencies:

Use:

elasticInOut(<float> x)

Check it on Github



#ifndef FNC_ELASTICINOUT
#define FNC_ELASTICINOUT
float elasticInOut(in float t) {
    return t < 0.5
        ? 0.5 * sin(+13.0 * HALF_PI * 2.0 * t) * pow(2.0, 10.0 * (2.0 * t - 1.0))
        : 0.5 * sin(-13.0 * HALF_PI * ((2.0 * t - 1.0) + 1.0)) * pow(2.0, -10.0 * (2.0 * t - 1.0)) + 1.0;
}
#endif

Examples

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