13 lines
No EOL
564 B
Text
13 lines
No EOL
564 B
Text
/*
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contributors: Inigo Quiles
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description: |
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A nice choice to remap the 0..1 interval into 0..1, such that the corners are mapped to 0 and the center to 1. You can then rise the parabolar to a power k to control its shape. From https://iquilezles.org/articles/functions/
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use: <float> parabola(<float> x, <float> k)
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examples:
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- https://raw.githubusercontent.com/patriciogonzalezvivo/lygia_examples/main/math_functions.frag
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*/
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#ifndef FNC_PARABOLA
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#define FNC_PARABOLA
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float parabola(const float x, const float k ) { return pow( 4.0*x*(1.0-x), k ); }
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#endif |