_polywriter        10 lib/gfxpoly/convert.h     void(*moveto)(struct _polywriter*, int32_t x, int32_t y);
_polywriter        11 lib/gfxpoly/convert.h     void(*lineto)(struct _polywriter*, int32_t x, int32_t y);
_polywriter        12 lib/gfxpoly/convert.h     void(*setgridsize)(struct _polywriter*, double g);
_polywriter        13 lib/gfxpoly/convert.h     void*(*finish)(struct _polywriter*);