mirror of
https://github.com/patriciogonzalezvivo/thebookofshaders
synced 2024-11-19 15:25:41 +00:00
91 lines
2.7 KiB
HTML
91 lines
2.7 KiB
HTML
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<!-- Copyright 2015 Patricio Gonzalez Vivo (http://patriciogonzalezvivo.com) -->
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<body>
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<div id="container"></div>
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<script src="http://threejs.org/build/three.min.js"></script>
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<script id="vertexShader" type="x-shader/x-vertex">
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void main() {
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gl_Position = vec4( position, 1.0 );
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}
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</script>
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<script id="fragmentShader" type="x-shader/x-fragment">
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uniform vec2 u_resolution;
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uniform vec2 u_mouse;
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uniform float u_time;
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void main() {
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vec2 st = gl_FragCoord.xy/u_resolution.xy;
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gl_FragColor=vec4(st.x,st.y,0.0,1.0);
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}
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</script>
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<script>
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var container;
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var camera, scene, renderer;
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var uniforms;
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var mouse = {x:0, y:0};
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document.onmousemove = getMouseXY;
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init();
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animate();
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function getMouseXY(e) {
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mouse.x = e.pageX;
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mouse.y = e.pageY;
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}
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function init() {
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container = document.getElementById( 'container' );
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camera = new THREE.Camera();
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camera.position.z = 1;
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scene = new THREE.Scene();
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var geometry = new THREE.PlaneBufferGeometry( 2, 2 );
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uniforms = {
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u_time: { type: "f", value: 1.0 },
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u_mouse: { type: "v2", value: new THREE.Vector2() },
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u_resolution: { type: "v2", value: new THREE.Vector2() }
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};
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var material = new THREE.ShaderMaterial( {
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uniforms: uniforms,
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vertexShader: document.getElementById( 'vertexShader' ).textContent,
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fragmentShader: document.getElementById( 'fragmentShader' ).textContent
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} );
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var mesh = new THREE.Mesh( geometry, material );
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scene.add( mesh );
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renderer = new THREE.WebGLRenderer();
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renderer.setPixelRatio( window.devicePixelRatio );
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container.appendChild( renderer.domElement );
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onWindowResize();
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window.addEventListener( 'resize', onWindowResize, false );
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}
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function onWindowResize( event ) {
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renderer.setSize( window.innerWidth, window.innerHeight );
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uniforms.u_resolution.value.x = renderer.domElement.width;
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uniforms.u_resolution.value.y = renderer.domElement.height;
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uniforms.u_mouse.value.x = mouse.x;
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uniforms.u_mouse.value.y = mouse.y;
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}
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function animate() {
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requestAnimationFrame( animate );
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render();
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}
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function render() {
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uniforms.u_time.value += 0.05;
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renderer.render( scene, camera );
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}
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</script>
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</body>
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