[gnomemm] Rotating an item in gnomecanvas...............

["Suresh Kumar" <suresh_vsamy rediffmail com>]

Hi,

    I have drwan a rectangle in the canvas. When i used 
gnome_canvas_item_rotate() to rotate the rectangle, i got the 
error message "undefine reference to gnome_canvas_item_rotate".  
Is gnomecanvas doesnt support this command? Does have to use 
affine transforms for this?

    I want to rotate the rectangle to some degree based on some 
origin points. For example, rotate the rectangle, which has the 
boundary points (100,100) (200,200), to 45.0 degree based on the 
point (100,100 ). How can i do it?

static void
create_canvas_items(GtkWidget* canvas)
{
  GnomeCanvasGroup* group;
  GnomeCanvasItem* item;

  group = gnome_canvas_root(GNOME_CANVAS(canvas));

  /* A translucent rectangle */
  item = gnome_canvas_item_new (group,
                                     
gnome_canvas_rect_get_type(),
                                     "x1", 100.0,
                                     "y1", 100.0,
                                     "x2", 200.0,
                                     "y2", 200.0,
                                     "fill_color_rgba", 
0x3cb37180,
                                     "outline_color", "black",
                                     "width_units", 4.0,
                                     NULL);

   /*  Rotate  the rectangle */

  gnome_canvas_item_rotate(item,100.0,100.0,45.0);
}


Thanx.

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