- f_scale_x and f_scale_y are set to 1.0
- f_rotate_skew0 and f_rotate_skew1 are set to 0.0
- f_translate_x and f_translate_y must be specified. The translation can be set to (0, 0) to avoid any side effects.
Scale is a ratio. Rotate is an angle in radian. Translate is in TWIPs (1/20th of a pixel.)