webvr js meetup initial commit

node_modules/three/examples/js/nodes/math/OperatorNode.js

@@ -0,0 +1,56 @@
+/**
+ * @author sunag / http://www.sunag.com.br/
+ */
+
+THREE.OperatorNode = function( a, b, op ) {
+
+	THREE.TempNode.call( this );
+
+	this.a = a;
+	this.b = b;
+	this.op = op || THREE.OperatorNode.ADD;
+
+};
+
+THREE.OperatorNode.ADD = '+';
+THREE.OperatorNode.SUB = '-';
+THREE.OperatorNode.MUL = '*';
+THREE.OperatorNode.DIV = '/';
+
+THREE.OperatorNode.prototype = Object.create( THREE.TempNode.prototype );
+THREE.OperatorNode.prototype.constructor = THREE.OperatorNode;
+
+THREE.OperatorNode.prototype.getType = function( builder ) {
+
+	var a = this.a.getType( builder );
+	var b = this.b.getType( builder );
+
+	if ( builder.isFormatMatrix( a ) ) {
+
+		return 'v4';
+
+	} else if ( builder.getFormatLength( b ) > builder.getFormatLength( a ) ) {
+
+		// use the greater length vector
+
+		return b;
+
+	}
+
+	return a;
+
+};
+
+THREE.OperatorNode.prototype.generate = function( builder, output ) {
+
+	var material = builder.material,
+		data = material.getDataNode( this.uuid );
+
+	var type = this.getType( builder );
+
+	var a = this.a.build( builder, type );
+	var b = this.b.build( builder, type );
+
+	return builder.format( '(' + a + this.op + b + ')', type, output );
+
+};