webvr js meetup initial commit

node_modules/three/examples/js/crossfade/gui.js

@@ -0,0 +1,39 @@
+var transitionParams = {
+	"useTexture": true,
+	"transition": 0.5,
+	"transitionSpeed": 2.0,
+	"texture": 5,
+	"loopTexture": true,
+	"animateTransition": true,
+	"textureThreshold": 0.3
+};
+
+function initGUI() {
+	
+	var gui = new dat.GUI();
+
+	gui.add( transitionParams, "useTexture" ).onChange( function( value ) {
+		
+		transition.useTexture( value );
+		
+	} );
+	
+	gui.add( transitionParams, 'loopTexture' );
+	
+	gui.add( transitionParams, 'texture', { Perlin: 0, Squares: 1, Cells: 2, Distort: 3, Gradient: 4, Radial: 5 } ).onChange( function( value ) {
+		
+		transition.setTexture( value );
+		
+	} ).listen();
+		
+	gui.add( transitionParams, "textureThreshold", 0, 1, 0.01 ).onChange( function( value ) {
+		
+		transition.setTextureThreshold( value );
+		
+	} );
+
+	gui.add( transitionParams, "animateTransition" );
+	gui.add( transitionParams, "transition", 0, 1, 0.01 ).listen();
+	gui.add( transitionParams, "transitionSpeed", 0.5, 5, 0.01 );
+	
+}

node_modules/three/examples/js/crossfade/scenes.js

@@ -0,0 +1,111 @@
+function generateGeometry( objectType, numObjects ) {
+
+	var geometry = new THREE.Geometry();
+
+	function applyVertexColors( g, c ) {
+
+		g.faces.forEach( function( f ) {
+
+			var n = ( f instanceof THREE.Face3 ) ? 3 : 4;
+
+			for ( var j = 0; j < n; j ++ ) {
+
+				f.vertexColors[ j ] = c;
+
+			}
+
+		} );
+
+	}
+
+	for ( var i = 0; i < numObjects; i ++ ) {
+
+		var position = new THREE.Vector3();
+
+		position.x = Math.random() * 10000 - 5000;
+		position.y = Math.random() * 6000 - 3000;
+		position.z = Math.random() * 8000 - 4000;
+
+		var rotation = new THREE.Euler();
+
+		rotation.x = Math.random() * 2 * Math.PI;
+		rotation.y = Math.random() * 2 * Math.PI;
+		rotation.z = Math.random() * 2 * Math.PI;
+
+		var scale = new THREE.Vector3();
+
+		var geom, color = new THREE.Color();
+
+		scale.x = Math.random() * 200 + 100;
+
+		if ( objectType == "cube" ) {
+
+			geom = new THREE.BoxGeometry( 1, 1, 1 );
+			scale.y = Math.random() * 200 + 100;
+			scale.z = Math.random() * 200 + 100;
+			color.setRGB( 0, 0, Math.random() + 0.1 );
+
+		} else if ( objectType == "sphere" ) {
+
+			geom = new THREE.IcosahedronGeometry( 1, 1 );
+			scale.y = scale.z = scale.x;
+			color.setRGB( Math.random() + 0.1, 0, 0 );
+
+		}
+
+		// give the geom's vertices a random color, to be displayed
+		applyVertexColors( geom, color );
+
+		var mesh = new THREE.Mesh( geom );
+		mesh.position.copy( position );
+		mesh.rotation.copy( rotation );
+		mesh.scale.copy( scale );
+		mesh.updateMatrix();
+
+		geometry.merge( mesh.geometry, mesh.matrix );
+
+	}
+
+	return geometry;
+
+}
+
+function Scene ( type, numObjects, cameraZ, fov, rotationSpeed, clearColor ) {
+
+	this.clearColor = clearColor;
+
+	this.camera = new THREE.PerspectiveCamera( fov, window.innerWidth / window.innerHeight, 1, 10000 );
+	this.camera.position.z = cameraZ;
+
+	// Setup scene
+	this.scene = new THREE.Scene();
+	this.scene.add( new THREE.AmbientLight( 0x555555 ) );
+
+	var light = new THREE.SpotLight( 0xffffff, 1.5 );
+	light.position.set( 0, 500, 2000 );
+	this.scene.add( light );
+
+	this.rotationSpeed = rotationSpeed;
+	defaultMaterial = new THREE.MeshPhongMaterial( { color: 0xffffff, shading: THREE.FlatShading, vertexColors: THREE.VertexColors } );
+	this.mesh = new THREE.Mesh( generateGeometry( type, numObjects ), defaultMaterial );
+	this.scene.add( this.mesh );
+
+	renderTargetParameters = { minFilter: THREE.LinearFilter, magFilter: THREE.LinearFilter, format: THREE.RGBFormat, stencilBuffer: false };
+	this.fbo = new THREE.WebGLRenderTarget( window.innerWidth, window.innerHeight, renderTargetParameters );
+
+	this.render = function( delta, rtt ) {
+
+		this.mesh.rotation.x += delta * this.rotationSpeed.x;
+		this.mesh.rotation.y += delta * this.rotationSpeed.y;
+		this.mesh.rotation.z += delta * this.rotationSpeed.z;
+
+		renderer.setClearColor( this.clearColor );
+
+		if ( rtt )
+			renderer.render( this.scene, this.camera, this.fbo, true );
+		else
+			renderer.render( this.scene, this.camera );
+
+	};
+
+}

node_modules/three/examples/js/crossfade/transition.js

@@ -0,0 +1,161 @@
+function Transition ( sceneA, sceneB ) {
+
+	this.scene = new THREE.Scene();
+
+	this.cameraOrtho = new THREE.OrthographicCamera( window.innerWidth / - 2, window.innerWidth / 2, window.innerHeight / 2, window.innerHeight / - 2, - 10, 10 );
+
+	this.textures = [];
+	for ( var i = 0; i < 6; i ++ )
+		this.textures[ i ] = new THREE.TextureLoader().load( 'textures/transition/transition' + ( i + 1 ) + '.png' );
+
+	this.quadmaterial = new THREE.ShaderMaterial( {
+
+		uniforms: {
+
+			tDiffuse1: {
+				value: null
+			},
+			tDiffuse2: {
+				value: null
+			},
+			mixRatio: {
+				value: 0.0
+			},
+			threshold: {
+				value: 0.1
+			},
+			useTexture: {
+				value: 1
+			},
+			tMixTexture: {
+				value: this.textures[ 0 ]
+			}
+		},
+		vertexShader: [
+
+			"varying vec2 vUv;",
+
+			"void main() {",
+
+			"vUv = vec2( uv.x, uv.y );",
+			"gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );",
+
+			"}"
+
+		].join( "\n" ),
+		fragmentShader: [
+
+			"uniform float mixRatio;",
+
+			"uniform sampler2D tDiffuse1;",
+			"uniform sampler2D tDiffuse2;",
+			"uniform sampler2D tMixTexture;",
+
+			"uniform int useTexture;",
+			"uniform float threshold;",
+
+			"varying vec2 vUv;",
+
+			"void main() {",
+
+			"vec4 texel1 = texture2D( tDiffuse1, vUv );",
+			"vec4 texel2 = texture2D( tDiffuse2, vUv );",
+
+			"if (useTexture==1) {",
+
+				"vec4 transitionTexel = texture2D( tMixTexture, vUv );",
+				"float r = mixRatio * (1.0 + threshold * 2.0) - threshold;",
+				"float mixf=clamp((transitionTexel.r - r)*(1.0/threshold), 0.0, 1.0);",
+
+				"gl_FragColor = mix( texel1, texel2, mixf );",
+			"} else {",
+
+				"gl_FragColor = mix( texel2, texel1, mixRatio );",
+
+			"}",
+		"}"
+
+		].join( "\n" )
+
+	} );
+
+	quadgeometry = new THREE.PlaneBufferGeometry( window.innerWidth, window.innerHeight );
+
+	this.quad = new THREE.Mesh( quadgeometry, this.quadmaterial );
+	this.scene.add( this.quad );
+
+	// Link both scenes and their FBOs
+	this.sceneA = sceneA;
+	this.sceneB = sceneB;
+
+	this.quadmaterial.uniforms.tDiffuse1.value = sceneA.fbo.texture;
+	this.quadmaterial.uniforms.tDiffuse2.value = sceneB.fbo.texture;
+
+	this.needChange = false;
+
+	this.setTextureThreshold = function ( value ) {
+
+		this.quadmaterial.uniforms.threshold.value = value;
+
+	};
+
+	this.useTexture = function ( value ) {
+
+		this.quadmaterial.uniforms.useTexture.value = value ? 1 : 0;
+
+	};
+
+	this.setTexture = function ( i ) {
+
+		this.quadmaterial.uniforms.tMixTexture.value = this.textures[ i ];
+
+	};
+
+	this.render = function( delta ) {
+
+		// Transition animation
+		if ( transitionParams.animateTransition ) {
+
+			var t = ( 1 + Math.sin( transitionParams.transitionSpeed * clock.getElapsedTime() / Math.PI ) ) / 2;
+			transitionParams.transition = THREE.Math.smoothstep( t, 0.3, 0.7 );
+
+			// Change the current alpha texture after each transition
+			if ( transitionParams.loopTexture && ( transitionParams.transition == 0 || transitionParams.transition == 1 ) ) {
+
+				if ( this.needChange ) {
+
+					transitionParams.texture = ( transitionParams.texture + 1 ) % this.textures.length;
+					this.quadmaterial.uniforms.tMixTexture.value = this.textures[ transitionParams.texture ];
+					this.needChange = false;
+
+				}
+
+			} else
+				this.needChange = true;
+
+		}
+
+		this.quadmaterial.uniforms.mixRatio.value = transitionParams.transition;
+
+		// Prevent render both scenes when it's not necessary
+		if ( transitionParams.transition == 0 ) {
+
+			this.sceneB.render( delta, false );
+
+		} else if ( transitionParams.transition == 1 ) {
+
+			this.sceneA.render( delta, false );
+
+		} else {
+
+			// When 0<transition<1 render transition between two scenes
+
+			this.sceneA.render( delta, true );
+			this.sceneB.render( delta, true );
+			renderer.render( this.scene, this.cameraOrtho, null, true );
+
+		}
+
+	}
+
+}