mirror of
https://github.com/Doodle3D/Doodle3D-Slicer.git
synced 2024-12-25 20:33:50 +01:00
69 lines
1.3 KiB
JavaScript
69 lines
1.3 KiB
JavaScript
|
/**
|
||
|
|
* @author alteredq / http://alteredqualia.com/
|
||
|
|
*
|
||
|
|
* Dot screen shader
|
||
|
|
* based on glfx.js sepia shader
|
||
|
|
* https://github.com/evanw/glfx.js
|
||
|
|
*/
|
||
|
|
|
||
|
|
THREE.DotScreenShader = {
|
||
|
|
|
||
|
|
uniforms: {
|
||
|
|
|
||
|
|
"tDiffuse": { type: "t", value: null },
|
||
|
|
"tSize": { type: "v2", value: new THREE.Vector2( 256, 256 ) },
|
||
|
|
"center": { type: "v2", value: new THREE.Vector2( 0.5, 0.5 ) },
|
||
|
|
"angle": { type: "f", value: 1.57 },
|
||
|
|
"scale": { type: "f", value: 1.0 }
|
||
|
|
|
||
|
|
},
|
||
|
|
|
||
|
|
vertexShader: [
|
||
|
|
|
||
|
|
"varying vec2 vUv;",
|
||
|
|
|
||
|
|
"void main() {",
|
||
|
|
|
||
|
|
"vUv = uv;",
|
||
|
|
"gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );",
|
||
|
|
|
||
|
|
"}"
|
||
|
|
|
||
|
|
].join("\n"),
|
||
|
|
|
||
|
|
fragmentShader: [
|
||
|
|
|
||
|
|
"uniform vec2 center;",
|
||
|
|
"uniform float angle;",
|
||
|
|
"uniform float scale;",
|
||
|
|
"uniform vec2 tSize;",
|
||
|
|
|
||
|
|
"uniform sampler2D tDiffuse;",
|
||
|
|
|
||
|
|
"varying vec2 vUv;",
|
||
|
|
|
||
|
|
"float pattern() {",
|
||
|
|
|
||
|
|
"float s = sin( angle ), c = cos( angle );",
|
||
|
|
|
||
|
|
"vec2 tex = vUv * tSize - center;",
|
||
|
|
"vec2 point = vec2( c * tex.x - s * tex.y, s * tex.x + c * tex.y ) * scale;",
|
||
|
|
|
||
|
|
"return ( sin( point.x ) * sin( point.y ) ) * 4.0;",
|
||
|
|
|
||
|
|
"}",
|
||
|
|
|
||
|
|
"void main() {",
|
||
|
|
|
||
|
|
"vec4 color = texture2D( tDiffuse, vUv );",
|
||
|
|
|
||
|
|
"float average = ( color.r + color.g + color.b ) / 3.0;",
|
||
|
|
|
||
|
|
"gl_FragColor = vec4( vec3( average * 10.0 - 5.0 + pattern() ), color.a );",
|
||
|
|
|
||
|
|
"}"
|
||
|
|
|
||
|
|
].join("\n")
|
||
|
|
|
||
|
|
};
|