webvr js meetup initial commit

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

@@ -0,0 +1,87 @@
+/**
+ * @author sunag / http://www.sunag.com.br/
+ */
+
+THREE.PositionNode = function( scope ) {
+
+	THREE.TempNode.call( this, 'v3' );
+
+	this.scope = scope || THREE.PositionNode.LOCAL;
+
+};
+
+THREE.PositionNode.LOCAL = 'local';
+THREE.PositionNode.WORLD = 'world';
+THREE.PositionNode.VIEW = 'view';
+THREE.PositionNode.PROJECTION = 'projection';
+
+THREE.PositionNode.prototype = Object.create( THREE.TempNode.prototype );
+THREE.PositionNode.prototype.constructor = THREE.PositionNode;
+
+THREE.PositionNode.prototype.getType = function( builder ) {
+
+	switch ( this.scope ) {
+		case THREE.PositionNode.PROJECTION:
+			return 'v4';
+	}
+
+	return this.type;
+
+};
+
+THREE.PositionNode.prototype.isShared = function( builder ) {
+
+	switch ( this.scope ) {
+		case THREE.PositionNode.LOCAL:
+		case THREE.PositionNode.WORLD:
+			return false;
+	}
+
+	return true;
+
+};
+
+THREE.PositionNode.prototype.generate = function( builder, output ) {
+
+	var material = builder.material;
+	var result;
+
+	switch ( this.scope ) {
+
+		case THREE.PositionNode.LOCAL:
+
+			material.requestAttribs.position = true;
+
+			if ( builder.isShader( 'vertex' ) ) result = 'transformed';
+			else result = 'vPosition';
+
+			break;
+
+		case THREE.PositionNode.WORLD:
+
+			material.requestAttribs.worldPosition = true;
+
+			if ( builder.isShader( 'vertex' ) ) result = 'vWPosition';
+			else result = 'vWPosition';
+
+			break;
+
+		case THREE.PositionNode.VIEW:
+
+			if ( builder.isShader( 'vertex' ) ) result = '-mvPosition.xyz';
+			else result = 'vViewPosition';
+
+			break;
+
+		case THREE.PositionNode.PROJECTION:
+
+			if ( builder.isShader( 'vertex' ) ) result = '(projectionMatrix * modelViewMatrix * vec4( position, 1.0 ))';
+			else result = 'vec4( 0.0 )';
+
+			break;
+
+	}
+
+	return builder.format( result, this.getType( builder ), output );
+
+};