Sha256: 918df4a2711a711e9d484defd6eeeae44fa8ac8b16aeee8566854f1b99fed7a4
Contents?: true
Size: 1.69 KB
Versions: 4
Compression:
Stored size: 1.69 KB
Contents
(function (global, factory) {
if (typeof define === "function" && define.amd) {
define(["exports"], factory);
} else if (typeof exports !== "undefined") {
factory(exports);
} else {
var mod = {
exports: {}
};
factory(mod.exports);
global.KaleidoShader = mod.exports;
}
})(typeof globalThis !== "undefined" ? globalThis : typeof self !== "undefined" ? self : this, function (_exports) {
"use strict";
Object.defineProperty(_exports, "__esModule", {
value: true
});
_exports.KaleidoShader = void 0;
/**
* Kaleidoscope Shader
* Radial reflection around center point
* Ported from: http://pixelshaders.com/editor/
* by Toby Schachman / http://tobyschachman.com/
*
* sides: number of reflections
* angle: initial angle in radians
*/
var KaleidoShader = {
uniforms: {
'tDiffuse': {
value: null
},
'sides': {
value: 6.0
},
'angle': {
value: 0.0
}
},
vertexShader:
/* glsl */
"\n\n\t\tvarying vec2 vUv;\n\n\t\tvoid main() {\n\n\t\t\tvUv = uv;\n\t\t\tgl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );\n\n\t\t}",
fragmentShader:
/* glsl */
"\n\n\t\tuniform sampler2D tDiffuse;\n\t\tuniform float sides;\n\t\tuniform float angle;\n\n\t\tvarying vec2 vUv;\n\n\t\tvoid main() {\n\n\t\t\tvec2 p = vUv - 0.5;\n\t\t\tfloat r = length(p);\n\t\t\tfloat a = atan(p.y, p.x) + angle;\n\t\t\tfloat tau = 2. * 3.1416 ;\n\t\t\ta = mod(a, tau/sides);\n\t\t\ta = abs(a - tau/sides/2.) ;\n\t\t\tp = r * vec2(cos(a), sin(a));\n\t\t\tvec4 color = texture2D(tDiffuse, p + 0.5);\n\t\t\tgl_FragColor = color;\n\n\t\t}"
};
_exports.KaleidoShader = KaleidoShader;
});
Version data entries
4 entries across 4 versions & 1 rubygems