X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.scenegraph%2Fsrc%2Forg%2Fsimantics%2Fscenegraph%2Fg2d%2FIdentityAffineTransform.java;fp=bundles%2Forg.simantics.scenegraph%2Fsrc%2Forg%2Fsimantics%2Fscenegraph%2Fg2d%2FIdentityAffineTransform.java;h=2eb989b902212865db2643b7596808f3c96f3533;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git

diff --git a/bundles/org.simantics.scenegraph/src/org/simantics/scenegraph/g2d/IdentityAffineTransform.java b/bundles/org.simantics.scenegraph/src/org/simantics/scenegraph/g2d/IdentityAffineTransform.java
new file mode 100644
index 000000000..2eb989b90
--- /dev/null
+++ b/bundles/org.simantics.scenegraph/src/org/simantics/scenegraph/g2d/IdentityAffineTransform.java
@@ -0,0 +1,164 @@
+/*******************************************************************************
+ * Copyright (c) 2012 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:
+ *     VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.scenegraph.g2d;
+
+import java.awt.geom.AffineTransform;
+import java.awt.geom.NoninvertibleTransformException;
+
+/**
+ * An optimization for memory consumption to keep down the allocation of
+ * unnecessary identity-type affine transforms. This will be used as the default
+ * affine transform in {@link G2DNode} and {@link G2DParentNode}.
+ * 
+ * @author Tuukka Lehtonen
+ */
+public class IdentityAffineTransform extends AffineTransform {
+
+    public static final IdentityAffineTransform INSTANCE = new IdentityAffineTransform();
+
+    private static final long serialVersionUID = 7843049586639496587L;
+
+    private IdentityAffineTransform() {
+        // No self-construction.
+    }
+
+    @Override
+    public boolean isIdentity() {
+        return true;
+    }
+
+    @Override
+    public void translate(double tx, double ty) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public void rotate(double theta) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public void rotate(double theta, double anchorx, double anchory) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public void rotate(double vecx, double vecy) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public void rotate(double vecx, double vecy, double anchorx, double anchory) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public void quadrantRotate(int numquadrants) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public void quadrantRotate(int numquadrants, double anchorx, double anchory) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public void scale(double sx, double sy) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public void shear(double shx, double shy) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public void setToIdentity() {
+        // NOP
+    }
+
+    @Override
+    public void setToTranslation(double tx, double ty) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public void setToRotation(double theta) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public void setToRotation(double theta, double anchorx, double anchory) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public void setToRotation(double vecx, double vecy) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public void setToRotation(double vecx, double vecy, double anchorx, double anchory) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public void setToQuadrantRotation(int numquadrants) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public void setToQuadrantRotation(int numquadrants, double anchorx, double anchory) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public void setToScale(double sx, double sy) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public void setToShear(double shx, double shy) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public void setTransform(AffineTransform Tx) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public void setTransform(double m00, double m10, double m01, double m11, double m02, double m12) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public void concatenate(AffineTransform Tx) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public void preConcatenate(AffineTransform Tx) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public void invert() throws NoninvertibleTransformException {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public Object clone() {
+        return new AffineTransform();
+    }
+
+}
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