49 lines
860 B
JavaScript
49 lines
860 B
JavaScript
const KaleidoShader = {
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uniforms: {
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tDiffuse: { value: null },
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sides: { value: 6 },
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angle: { value: 0 }
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},
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vertexShader: (
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/* glsl */
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`
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varying vec2 vUv;
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void main() {
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vUv = uv;
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gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );
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}
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`
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),
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fragmentShader: (
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/* glsl */
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`
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uniform sampler2D tDiffuse;
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uniform float sides;
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uniform float angle;
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varying vec2 vUv;
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void main() {
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vec2 p = vUv - 0.5;
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float r = length(p);
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float a = atan(p.y, p.x) + angle;
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float tau = 2. * 3.1416 ;
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a = mod(a, tau/sides);
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a = abs(a - tau/sides/2.) ;
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p = r * vec2(cos(a), sin(a));
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vec4 color = texture2D(tDiffuse, p + 0.5);
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gl_FragColor = color;
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}
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`
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)
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};
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export {
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KaleidoShader
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};
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//# sourceMappingURL=KaleidoShader.js.map
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