/*	Public domain	*/

#define SK_DIMENSION_TEXT_MAX	256

enum sk_dimension_type {
	SK_DIMENSION_NONE,
	SK_DIMENSION_DISTANCE,		/* Linear distance */
	SK_DIMENSION_ANGLE_ENDPOINT,	/* Angle at shared endpoint */
	SK_DIMENSION_ANGLE_INTERSECT	/* Angle at line intersection */
};

typedef struct sk_dimension {
	struct sk_annot annot;
	enum sk_dimension_type type;	/* Type of dimension */
	Uint flags;
#define SK_DIMENSION_CONJ_ANGLE	0x01	/* Display conjugate angle */
	const struct ag_unit *unit;	/* Length/angle unit (NULL = default) */
	SK_Node *n1, *n2;		/* Dimension between nodes */
	M_Color cLbl;			/* Color of label text */
	M_Color cLblBorder;		/* Color of label border */
	M_Color cLineDim;		/* Color of dimension line */
	int xPad, yPad;			/* Label padding (pixels) */
	M_Vector3 vLbl;			/* Label position (in annotation's
					   frame of reference) */
	M_Real wLbl, hLbl;		/* Label dimensions */
	char text[SK_DIMENSION_TEXT_MAX]; /* Generated label text */
} SK_Dimension;

typedef struct sk_dimension_view {
	int lbl;			/* Label texture handle */
} SK_DimensionView;

#define SKDIMENSION(n) ((SK_Dimension *)(n))

__BEGIN_DECLS
extern SK_NodeOps skDimensionOps;

SK_Dimension	*SK_DimensionNew(void *);
void		 SK_DimensionInit(void *, Uint32);
int		 SK_DimensionLoad(SK *, void *, AG_DataSource *);
int		 SK_DimensionSave(SK *, void *, AG_DataSource *);
void		 SK_DimensionDraw(void *, struct sk_view *);
void		 SK_DimensionRedraw(void *, struct sk_view *);
void		 SK_DimensionEdit(void *, struct ag_widget *, struct sk_view *);
M_Real		 SK_DimensionProximity(void *, const M_Vector3 *, M_Vector3 *);
int		 SK_DimensionDelete(void *);
int		 SK_DimensionMove(void *, const M_Vector3 *, const M_Vector3 *);
void		 SK_DimensionSetUnit(SK_Dimension *, const struct ag_unit *);
__END_DECLS