O2D:...

plugin/idl/pattern.idl

Index: plugin/idl/pattern.idl
===================================================================
--- plugin/idl/pattern.idl	(revision 71191)
+++ plugin/idl/pattern.idl	(working copy)
@@ -75,6 +75,24 @@
                                       double green,
                                       double blue,
                                       double alpha);
+
+  %[
+    Set the affine transformation matrix that maps user space to pattern space.
+    The default matrix is the identity matrix, so that no transformation occurs.
+
+    \param xx xx component of the affine transformation
+    \param yx yx component of the affine transformation
+    \param xy xy component of the affine transformation
+    \param yy yy component of the affine transformation
+    \param x0 X translation component of the affine transformation
+    \param y0 Y translation component of the affine transformation
+  %]

[fbarchard, 2011/01/19 18:51:20]

this is a 2x2 matrix rotation?  So you can rotate by an arbitrary angle?

[Tristan Schmelcher 2, 2011/01/20 00:26:16]

No, it is an affine transform, i.e. a 3x3 matrix. It is more powerful than a
linear transform. Rotation is possible, but we are only going to use it for
reflection.

+  void SetAffineTransform(double xx,
+                          double yx,
+                          double xy,
+                          double yy,
+                          double x0,
+                          double y0);
 };  // Pattern
 
 }  // namespace o2d