three-stdlib/shaders/KaleidoShader.cjs.map

stand-alone library of threejs examples

{"version":3,"file":"KaleidoShader.cjs","sources":["../../src/shaders/KaleidoShader.ts"],"sourcesContent":["/**\n * Kaleidoscope Shader\n * Radial reflection around center point\n * Ported from: http://pixelshaders.com/editor/\n * by Toby Schachman / http://tobyschachman.com/\n *\n * sides: number of reflections\n * angle: initial angle in radians\n */\n\nexport const KaleidoShader = {\n  uniforms: {\n    tDiffuse: { value: null },\n    sides: { value: 6.0 },\n    angle: { value: 0.0 },\n  },\n\n  vertexShader: [\n    'varying vec2 vUv;',\n\n    'void main() {',\n\n    '\tvUv = uv;',\n    '\tgl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );',\n\n    '}',\n  ].join('\\n'),\n\n  fragmentShader: [\n    'uniform sampler2D tDiffuse;',\n    'uniform float sides;',\n    'uniform float angle;',\n\n    'varying vec2 vUv;',\n\n    'void main() {',\n\n    '\tvec2 p = vUv - 0.5;',\n    '\tfloat r = length(p);',\n    '\tfloat a = atan(p.y, p.x) + angle;',\n    '\tfloat tau = 2. * 3.1416 ;',\n    '\ta = mod(a, tau/sides);',\n    '\ta = abs(a - tau/sides/2.) ;',\n    '\tp = r * vec2(cos(a), sin(a));',\n    '\tvec4 color = texture2D(tDiffuse, p + 0.5);',\n    '\tgl_FragColor = color;',\n\n    '}',\n  ].join('\\n'),\n}\n"],"names":[],"mappings":";;AAUO,MAAM,gBAAgB;AAAA,EAC3B,UAAU;AAAA,IACR,UAAU,EAAE,OAAO,KAAK;AAAA,IACxB,OAAO,EAAE,OAAO,EAAI;AAAA,IACpB,OAAO,EAAE,OAAO,EAAI;AAAA,EACtB;AAAA,EAEA,cAAc;AAAA,IACZ;AAAA,IAEA;AAAA,IAEA;AAAA,IACA;AAAA,IAEA;AAAA,EAAA,EACA,KAAK,IAAI;AAAA,EAEX,gBAAgB;AAAA,IACd;AAAA,IACA;AAAA,IACA;AAAA,IAEA;AAAA,IAEA;AAAA,IAEA;AAAA,IACA;AAAA,IACA;AAAA,IACA;AAAA,IACA;AAAA,IACA;AAAA,IACA;AAAA,IACA;AAAA,IACA;AAAA,IAEA;AAAA,EAAA,EACA,KAAK,IAAI;AACb;;"}