webvr js meetup initial commit

node_modules/three/examples/js/nodes/utils/NormalMapNode.js

@@ -0,0 +1,42 @@
+/**
+ * @author sunag / http://www.sunag.com.br/
+ */
+
+THREE.NormalMapNode = function( value, uv, scale, normal, position ) {
+
+	THREE.TempNode.call( this, 'v3' );
+
+	this.value = value;
+	this.scale = scale || new THREE.FloatNode( 1 );
+
+	this.normal = normal || new THREE.NormalNode( THREE.NormalNode.LOCAL );
+	this.position = position || new THREE.PositionNode( THREE.NormalNode.VIEW );
+
+};
+
+THREE.NormalMapNode.prototype = Object.create( THREE.TempNode.prototype );
+THREE.NormalMapNode.prototype.constructor = THREE.NormalMapNode;
+
+THREE.NormalMapNode.prototype.generate = function( builder, output ) {
+
+	var material = builder.material;
+
+	builder.include( 'perturbNormal2Arb' );
+
+	if ( builder.isShader( 'fragment' ) ) {
+
+		return builder.format( 'perturbNormal2Arb(-' + this.position.build( builder, 'v3' ) + ',' +
+			this.normal.build( builder, 'v3' ) + ',' +
+			this.value.build( builder, 'v3' ) + ',' +
+			this.value.coord.build( builder, 'v2' ) + ',' +
+			this.scale.build( builder, 'v2' ) + ')', this.getType( builder ), output );
+
+	} else {
+
+		console.warn( "THREE.NormalMapNode is not compatible with " + builder.shader + " shader." );
+
+		return builder.format( 'vec3( 0.0 )', this.getType( builder ), output );
+
+	}
+
+};