Support for dynamic transforms for both elements and terminals

[simantics/platform.git] / bundles / org.simantics.scenegraph / src / org / simantics / scenegraph / g2d / AffineTransformFunctions.java

diff --git a/bundles/org.simantics.scenegraph/src/org/simantics/scenegraph/g2d/AffineTransformFunctions.java b/bundles/org.simantics.scenegraph/src/org/simantics/scenegraph/g2d/AffineTransformFunctions.java
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+++ b/bundles/org.simantics.scenegraph/src/org/simantics/scenegraph/g2d/AffineTransformFunctions.java
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+/*******************************************************************************
+ * Copyright (c) 2017 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     Semantum Oy - initial API and implementation
+ *******************************************************************************/
+package org.simantics.scenegraph.g2d;
+
+import java.awt.geom.AffineTransform;
+import java.awt.geom.NoninvertibleTransformException;
+import java.awt.geom.Point2D;
+
+import org.simantics.scl.runtime.tuple.Tuple2;
+
+/**
+ * @author Antti Villberg
+ * @since 1.29.0
+ */
+public class AffineTransformFunctions {
+
+       public static Tuple2 transform(AffineTransform transform, Tuple2 point) {
+               Point2D result = new Point2D.Double((Double) point.c0, (Double) point.c1);
+               transform.transform(result, result);
+               return new Tuple2(result.getX(), result.getY());
+       }
+
+       public static Tuple2 inverseTransform(AffineTransform transform, Tuple2 point) throws NoninvertibleTransformException {
+               Point2D result = new Point2D.Double((Double)point.c0, (Double)point.c1);
+               transform.inverseTransform(result, result);
+               return new Tuple2(result.getX(), result.getY());
+       }
+
+}