webvr js meetup initial commit

node_modules/three/examples/js/nodes/accessors/ReflectNode.js

@@ -0,0 +1,68 @@
+/**
+ * @author sunag / http://www.sunag.com.br/
+ */
+
+THREE.ReflectNode = function( scope ) {
+
+	THREE.TempNode.call( this, 'v3', { unique: true } );
+
+	this.scope = scope || THREE.ReflectNode.CUBE;
+
+};
+
+THREE.ReflectNode.CUBE = 'cube';
+THREE.ReflectNode.SPHERE = 'sphere';
+THREE.ReflectNode.VECTOR = 'vector';
+
+THREE.ReflectNode.prototype = Object.create( THREE.TempNode.prototype );
+THREE.ReflectNode.prototype.constructor = THREE.ReflectNode;
+
+THREE.ReflectNode.prototype.getType = function( builder ) {
+
+	switch ( this.scope ) {
+		case THREE.ReflectNode.SPHERE:
+			return 'v2';
+	}
+
+	return this.type;
+
+};
+
+THREE.ReflectNode.prototype.generate = function( builder, output ) {
+
+	var result;
+
+	switch ( this.scope ) {
+
+		case THREE.ReflectNode.VECTOR:
+
+			builder.material.addFragmentNode( 'vec3 reflectVec = inverseTransformDirection( reflect( -normalize( vViewPosition ), normal ), viewMatrix );' );
+
+			result = 'reflectVec';
+
+			break;
+
+		case THREE.ReflectNode.CUBE:
+
+			var reflectVec = new THREE.ReflectNode( THREE.ReflectNode.VECTOR ).build( builder, 'v3' );
+
+			builder.material.addFragmentNode( 'vec3 reflectCubeVec = vec3( -1.0 * ' + reflectVec + '.x, ' + reflectVec + '.yz );' );
+
+			result = 'reflectCubeVec';
+
+			break;
+
+		case THREE.ReflectNode.SPHERE:
+
+			var reflectVec = new THREE.ReflectNode( THREE.ReflectNode.VECTOR ).build( builder, 'v3' );
+
+			builder.material.addFragmentNode( 'vec2 reflectSphereVec = normalize((viewMatrix * vec4(' + reflectVec + ', 0.0 )).xyz + vec3(0.0,0.0,1.0)).xy * 0.5 + 0.5;' );
+
+			result = 'reflectSphereVec';
+
+			break;
+	}
+
+	return builder.format( result, this.getType( this.type ), output );
+
+};