gboolean pressure_sensitivity; // use pen pressure to control stroke width?
double width_minimum_multiplier, width_maximum_multiplier; // calibration for pressure sensitivity
gboolean is_corestroke; // this stroke is painted with core pointer
gboolean pressure_sensitivity; // use pen pressure to control stroke width?
double width_minimum_multiplier, width_maximum_multiplier; // calibration for pressure sensitivity
gboolean is_corestroke; // this stroke is painted with core pointer