+ /**
+ * The current Graphics2D AffineTransform for all nodes under the special
+ * spatialRoot : RTreeNode.
+ *
+ * This can be used to optimize the creation and of new AffineTransforms by
+ * not having to use Graphics2D.getTransform to retrieve the current
+ * transformation which always creates new instances.
+ */
+ public static final Key KEY_TRANSFORM_UNDER_SPATIAL_ROOT = new Key(2006) {
+ @Override
+ public boolean isCompatibleValue(Object val) {
+ return val instanceof AffineTransform || val == null;
+ }
+ };
+