Adds a line to the path from the current point to position (x, y)
in user-space coordinates. After this call the current point
will be (x, y).
If there is no current point before the call to cairo_line_to()
this function will behave as cairo_move_to(cr, x, y).
Adds a line to the path from the current point to position (x, y) in user-space coordinates. After this call the current point will be (x, y). If there is no current point before the call to cairo_line_to() this function will behave as cairo_move_to(cr, x, y).