Merge pull request #11525 from sunag/86dev

UVTransformNode

examples/js/nodes/utils/UVTransformNode.js

@@ -0,0 +1,48 @@
+/**
+ * @author sunag / http://www.sunag.com.br/
+ */
+
+THREE.UVTransformNode = function () {
+
+	THREE.FunctionNode.call( this, "( uvTransform * vec4( uvNode, 0, 1 ) ).xy", "vec2" );
+
+	this.uv = new THREE.UVNode();
+	this.transform = new THREE.Matrix4Node();
+
+};
+
+THREE.UVTransformNode.prototype = Object.create( THREE.FunctionNode.prototype );
+THREE.UVTransformNode.prototype.constructor = THREE.UVTransformNode;
+
+THREE.UVTransformNode.prototype.generate = function ( builder, output ) {
+
+	this.keywords[ "uvNode" ] = this.uv;
+	this.keywords[ "uvTransform" ] = this.transform;
+
+	return THREE.FunctionNode.prototype.generate.call( this, builder, output );
+
+};
+
+THREE.UVTransformNode.prototype.compose = function () {
+
+	var defaultPivot = new THREE.Vector2( .5, .5 ),
+		tempVector = new THREE.Vector3(),
+		tempMatrix = new THREE.Matrix4();
+
+	return function compose( translate, rotate, scale, optionalCenter ) {
+
+		optionalCenter = optionalCenter !== undefined ? optionalCenter : defaultPivot;
+
+		var matrix = this.transform.value;
+
+		matrix.identity()
+			.setPosition( tempVector.set( - optionalCenter.x, - optionalCenter.y, 0 ) )
+			.premultiply( tempMatrix.makeRotationZ( rotate ) )
+			.multiply( tempMatrix.makeScale( scale.x, scale.y, 0 ) )
+			.multiply( tempMatrix.makeTranslation( translate.x, translate.y, 0 ) );
+
+		return this;
+
+	};
+
+}();