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37 lines
723 B
37 lines
723 B
2 years ago
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import { MathUtils } from 'three';
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const _hsl = {};
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class ColorConverter {
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static setHSV( color, h, s, v ) {
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// https://gist.github.com/xpansive/1337890#file-index-js
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h = MathUtils.euclideanModulo( h, 1 );
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s = MathUtils.clamp( s, 0, 1 );
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v = MathUtils.clamp( v, 0, 1 );
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return color.setHSL( h, ( s * v ) / ( ( h = ( 2 - s ) * v ) < 1 ? h : ( 2 - h ) ), h * 0.5 );
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}
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static getHSV( color, target ) {
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color.getHSL( _hsl );
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// based on https://gist.github.com/xpansive/1337890#file-index-js
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_hsl.s *= ( _hsl.l < 0.5 ) ? _hsl.l : ( 1 - _hsl.l );
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target.h = _hsl.h;
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target.s = 2 * _hsl.s / ( _hsl.l + _hsl.s );
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target.v = _hsl.l + _hsl.s;
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return target;
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}
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}
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export { ColorConverter };
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