Transformations Manipulating the current transformation matrix The current transformation matrix, ctm, is a two-dimensional affine transformation that maps all coordinates and other drawing instruments from the user space into the surface's canonical coordinate system, also known as the device space. #cairo_matrix_t @cr: @tx: @ty: @cr: @sx: @sy: @cr: @angle: @cr: @matrix: @cr: @matrix: @cr: @matrix: @cr: @cr: @x: @y: @cr: @dx: @dy: @cr: @x: @y: @cr: @dx: @dy: