webvr js meetup initial commit

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

@@ -0,0 +1,35 @@
+/**
+ * @author sunag / http://www.sunag.com.br/
+ */
+
+THREE.ScreenUVNode = function( resolution ) {
+
+	THREE.TempNode.call( this, 'v2' );
+
+	this.resolution = resolution;
+
+};
+
+THREE.ScreenUVNode.prototype = Object.create( THREE.TempNode.prototype );
+THREE.ScreenUVNode.prototype.constructor = THREE.ScreenUVNode;
+
+THREE.ScreenUVNode.prototype.generate = function( builder, output ) {
+
+	var material = builder.material;
+	var result;
+
+	if ( builder.isShader( 'fragment' ) ) {
+
+		result = '(gl_FragCoord.xy/' + this.resolution.build( builder, 'v2' ) + ')';
+
+	} else {
+
+		console.warn( "THREE.ScreenUVNode is not compatible with " + builder.shader + " shader." );
+
+		result = 'vec2( 0.0 )';
+
+	}
+
+	return builder.format( result, this.getType( builder ), output );
+
+};