mirror of
https://github.com/Doodle3D/Doodle3D-Slicer.git
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59 lines
1013 B
JavaScript
59 lines
1013 B
JavaScript
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/**
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* @author felixturner / http://airtight.cc/
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*
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* Mirror Shader
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* Copies half the input to the other half
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*
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* side: side of input to mirror (0 = left, 1 = right, 2 = top, 3 = bottom)
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*/
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THREE.MirrorShader = {
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uniforms: {
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"tDiffuse": { type: "t", value: null },
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"side": { type: "i", value: 1 }
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},
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vertexShader: [
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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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].join("\n"),
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fragmentShader: [
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"uniform sampler2D tDiffuse;",
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"uniform int side;",
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"varying vec2 vUv;",
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"void main() {",
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"vec2 p = vUv;",
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"if (side == 0){",
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"if (p.x > 0.5) p.x = 1.0 - p.x;",
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"}else if (side == 1){",
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"if (p.x < 0.5) p.x = 1.0 - p.x;",
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"}else if (side == 2){",
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"if (p.y < 0.5) p.y = 1.0 - p.y;",
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"}else if (side == 3){",
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"if (p.y > 0.5) p.y = 1.0 - p.y;",
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"} ",
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"vec4 color = texture2D(tDiffuse, p);",
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"gl_FragColor = color;",
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"}"
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].join("\n")
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};
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