Index: src/graphics.h.in
===================================================================
RCS file: /cvs/octave/src/graphics.h.in,v
retrieving revision 1.50
diff -c -p -r1.50 graphics.h.in
*** src/graphics.h.in	28 Jan 2008 22:42:19 -0000	1.50
--- src/graphics.h.in	30 Jan 2008 10:15:27 -0000
*************** public:
*** 2192,2197 ****
--- 2192,2208 ----
  	update_camera ();
        }
  
+     ColumnVector transform (double x, double y, double z,
+ 			    bool use_scale = true) const;
+     ColumnVector untransform (double x, double y, double z,
+ 			      bool use_scale = true) const;
+ 
+     Matrix get_transform_matrix (void) const { return x_render; }
+     Matrix get_inverse_transform_matrix (void) const { return x_render_inv; }
+     Matrix get_opengl_matrix_1 (void) const { return x_gl_mat1; }
+     Matrix get_opengl_matrix_2 (void) const { return x_gl_mat2; }
+     Matrix get_transform_zlim (void) const { return x_zlim; }
+ 
    private:
      scaler sx, sy, sz;
      Matrix x_render, x_render_inv;
Index: src/graphics.cc
===================================================================
RCS file: /cvs/octave/src/graphics.cc,v
retrieving revision 1.80
diff -c -p -r1.80 graphics.cc
*** src/graphics.cc	28 Jan 2008 22:42:19 -0000	1.80
--- src/graphics.cc	30 Jan 2008 10:15:27 -0000
*************** axes::properties::get_boundingbox (void)
*** 2068,2073 ****
--- 2070,2105 ----
    return pos;
  }
  
+ ColumnVector
+ axes::properties::transform (double x, double y, double z,
+ 			     bool use_scale) const
+ {
+   if (use_scale)
+     {
+       x = sx.scale (x);
+       y = sy.scale (y);
+       z = sz.scale (z);
+     }
+ 
+   return (x_render * xform_vector (x, y, z));
+ }
+ 
+ ColumnVector
+ axes::properties::untransform (double x, double y, double z,
+ 			       bool use_scale) const
+ {
+   ColumnVector v = (x_render_inv * xform_vector (x, y, z));
+ 
+   if (use_scale)
+     {
+       v(0) = sx.unscale (v(0));
+       v(1) = sy.unscale (v(1));
+       v(2) = sz.unscale (v(2));
+     }
+ 
+   return v;
+ }
+ 
  octave_value
  axes::get_default (const caseless_str& name) const
  {