The drawing size, as specified in size_state. If using metric, then use a UF_DRAW_metric_size_t variable. If using english, use a UF_DRAW_english_size_t variable. If using a custom size, specify the size in a double array where size[0] is the height and size[1] is the length.
drawing_scale
double
The drawing scale.
units
int
The drawing units, either UF_PART_METRIC or UF_PART_ENGLISH.
size, UF_DRAW_METRIC_SIZE,
UF_DRAW_ENGLISH_SIZE or
UF_DRAW_CUSTOM_SIZE.