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GOArrow;
enum GOArrowType;
void go_arrow_clear (GOArrow *dst);
GOArrow * go_arrow_dup (GOArrow *src);
void go_arrow_init (GOArrow *res,
GOArrowType typ,
double a,
double b,
double c);
void go_arrow_init_kite (GOArrow *dst,
double a,
double b,
double c);
void go_arrow_init_oval (GOArrow *dst,
double ra,
double rb);
char const * go_arrow_type_as_str (GOArrowType typ);
GOArrowType go_arrow_type_from_str (const char *name);
typedef enum {
GO_ARROW_NONE,
GO_ARROW_KITE,
GO_ARROW_OVAL
/* GO_ARROW_STEALTH */
/* GO_ARROW_DIAMOND */
/* GO_ARROW_OPEN */
} GOArrowType;
void go_arrow_init (GOArrow *res, GOArrowType typ, double a, double b, double c);
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void go_arrow_init_kite (GOArrow *dst, double a, double b, double c);
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