affine_rotate a text canvas item

[Ryan Gammon <rggammon alumni uwaterloo ca>]

I'm trying to rotate a line of text by 10 degrees with the code below. 
In the rendered result, the text appears unrotated.

I'm using gnome_canvas_new_aa(), and libgnomecanvas version 2.0.4.

If you know of an application that successfully uses text rotation, or 
if you have any suggestions, I'd appreciate it.

  double rotate_affine[6];
  GnomeCanvasItem *item;
    item = gnome_canvas_item_new(GNOME_CANVAS_GROUP(graph->y_axis_group),
                        gnome_canvas_text_get_type(),
                        "x", (double)0,
                        "y", (double)0,
                        "anchor", GTK_ANCHOR_WEST,
                        "font", "variable",
                        "fill_color", "white",
                        "text","yabba dabba doo",
                        NULL);                  
    art_affine_rotate(rotate_affine, 10);
  gnome_canvas_item_affine_relative(item, rotate_affine);