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@@ -28,7 +28,7 @@
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</head>
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<body>
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- <div id="info"><a href="http://threejs.org" target="_blank">three.js</a> - custom attributes example - particles - billboards - alphatest</div>
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+ <div id="info"><a href="http://threejs.org" target="_blank">three.js</a> - custom attributes example - billboards - alphatest</div>
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<div id="container"></div>
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<script src="../build/three.min.js"></script>
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@@ -91,7 +91,7 @@
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var object, uniforms, attributes;
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- var vc1;
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+ var vertices1;
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var WIDTH = window.innerWidth;
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var HEIGHT = window.innerHeight;
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@@ -106,35 +106,8 @@
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scene = new THREE.Scene();
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- attributes = {
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-
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- size: { type: 'f', value: [] },
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- ca: { type: 'c', value: [] }
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-
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- };
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-
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- uniforms = {
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-
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- amplitude: { type: "f", value: 1.0 },
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- color: { type: "c", value: new THREE.Color( 0xffffff ) },
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- texture: { type: "t", value: THREE.ImageUtils.loadTexture( "textures/sprites/ball.png" ) },
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-
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- };
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-
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- uniforms.texture.value.wrapS = uniforms.texture.value.wrapT = THREE.RepeatWrapping;
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-
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- var shaderMaterial = new THREE.ShaderMaterial( {
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-
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- uniforms: uniforms,
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- attributes: attributes,
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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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- });
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-
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-
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var radius = 100, inner = 0.6 * radius;
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- var geometry = new THREE.Geometry();
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+ var vertices = [];
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for ( var i = 0; i < 100000; i ++ ) {
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@@ -148,23 +121,34 @@
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( vertex.y > inner || vertex.y < -inner ) ||
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( vertex.z > inner || vertex.z < -inner ) )
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- geometry.vertices.push( vertex );
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+ vertices.push( vertex );
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}
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- vc1 = geometry.vertices.length;
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+ vertices1 = vertices.length;
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radius = 200;
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var geometry2 = new THREE.BoxGeometry( radius, 0.1 * radius, 0.1 * radius, 50, 5, 5 );
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+ var matrix = new THREE.Matrix4();
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+ var position = new THREE.Vector3();
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+ var rotation = new THREE.Euler();
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+ var quaternion = new THREE.Quaternion();
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+ var scale = new THREE.Vector3( 1, 1, 1 );
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+
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function addGeo( geo, x, y, z, ry ) {
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- var mesh = new THREE.Mesh( geo );
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- mesh.position.set( x, y, z );
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- mesh.rotation.y = ry;
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- mesh.updateMatrix();
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+ position.set( x, y, z );
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+ rotation.set( 0, ry, 0 );
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+
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+ matrix.compose( position, quaternion.setFromEuler( rotation ), scale );
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- geometry.merge( mesh.geometry, mesh.matrix );
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+ for ( var i = 0, l = geo.vertices.length; i < l; i ++ ) {
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+
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+ var vertex = geo.vertices[ i ];
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+ vertices.push( vertex.clone().applyMatrix4( matrix ) );
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+
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+ }
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}
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@@ -191,39 +175,64 @@
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addGeo( geometry3, -110, 0, 110, 0 );
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addGeo( geometry3, -110, 0, -110, 0 );
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- // particle system
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-
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- object = new THREE.PointCloud( geometry, shaderMaterial );
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-
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- // custom attributes
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+ var positions = new Float32Array( vertices.length * 3 );
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+ var colors = new Float32Array( vertices.length * 3 );
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+ var sizes = new Float32Array( vertices.length );
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- var vertices = object.geometry.vertices;
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+ var vertex;
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+ var color = new THREE.Color();
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- var values_size = attributes.size.value;
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- var values_color = attributes.ca.value;
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+ for ( var i = 0; i < vertices.length; i ++ ) {
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- for ( var v = 0; v < vertices.length; v ++ ) {
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+ vertex = vertices[ i ];
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+ vertex.toArray( positions, i * 3 );
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- values_size[ v ] = 10;
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- values_color[ v ] = new THREE.Color( 0xffffff );
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+ if ( i < vertices1 ) {
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- if ( v < vc1 ) {
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-
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- values_color[ v ].setHSL( 0.5 + 0.2 * ( v / vc1 ), 1, 0.5 );
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+ color.setHSL( 0.5 + 0.2 * ( i / vertices1 ), 1, 0.5 );
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} else {
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- values_size[ v ] = 55;
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- values_color[ v ].setHSL( 0.1, 1, 0.5 );
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+ color.setHSL( 0.1, 1, 0.5 );
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}
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+ color.toArray( colors, i * 3 );
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+
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+ sizes[ i ] = i < vertices1 ? 10 : 40;
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+
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}
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- //console.log( vertices.length );
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+ var geometry = new THREE.BufferGeometry();
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+ geometry.addAttribute( 'position', new THREE.BufferAttribute( positions, 3 ) );
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+ geometry.addAttribute( 'ca', new THREE.BufferAttribute( colors, 3 ) );
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+ geometry.addAttribute( 'size', new THREE.BufferAttribute( sizes, 1 ) );
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+
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+ //
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+
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+ var texture = THREE.ImageUtils.loadTexture( "textures/sprites/ball.png" );
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+ texture.wrapS = THREE.RepeatWrapping;
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+ texture.wrapT = THREE.RepeatWrapping;
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+
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+ var material = new THREE.ShaderMaterial( {
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+
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+ uniforms: {
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+ amplitude: { type: "f", value: 1.0 },
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+ color: { type: "c", value: new THREE.Color( 0xffffff ) },
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+ texture: { type: "t", value: texture },
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+ },
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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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+ });
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+ //
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+
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+ object = new THREE.PointCloud( geometry, material );
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scene.add( object );
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+ //
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+
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renderer = new THREE.WebGLRenderer();
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renderer.setPixelRatio( window.devicePixelRatio );
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renderer.setSize( WIDTH, HEIGHT );
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@@ -266,11 +275,16 @@
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object.rotation.y = object.rotation.z = 0.02 * time;
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- for( var i = 0; i < attributes.size.value.length; i ++ ) {
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+ var geometry = object.geometry;
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+ var attributes = geometry.attributes;
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+
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+ for ( var i = 0; i < attributes.size.array.length; i ++ ) {
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- if ( i < vc1 )
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- attributes.size.value[ i ] = Math.max(0, 26 + 32 * Math.sin( 0.1 * i + 0.6 * time ));
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+ if ( i < vertices1 ) {
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+ attributes.size.array[ i ] = Math.max(0, 26 + 32 * Math.sin( 0.1 * i + 0.6 * time ));
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+
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+ }
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}
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@@ -280,7 +294,6 @@
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}
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-
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</script>
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</body>
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