/*
view object definition

A view consists of one to three data parts, axes labels, and intersection lines
Use axis and map definitions
*/

/* constants */
/* gap between render parts in pixels */
#define	GAP		3
/* portion sides and top of cube or plan occupy */
#define FRAC		.66666
/* flag to draw font; flag to mean is front */
#define	DRAW_FRONT	1
#define	DRAW_SIDE	2
#define	DRAW_TOP	4
#define	DRAW_AXES	8
#define	DRAW_PICKS	16
#define	DRAW_IMAGE	32
#define	DRAW_SHADOW	0
#define	DRAW_ALL	(DRAW_FRONT|DRAW_SIDE|DRAW_TOP|DRAW_AXES|DRAW_IMAGE)
/* mask to examine determine which side of a shadow */
/* mask to examine index in a shadow */
#define	INDEX_MASK	0x3fffffff
/* axis flags */
#define VIEW_NAXIS	6
#define	AXIS_COLOR	0
#define	AXIS_DOWN	1
#define	AXIS_ACROSS	2
#define	AXIS_DEEP	3
#define	AXIS_4D		4
#define	AXIS_5D		5
/* movie options */
#define	MOVIE_FRONT	AXIS_DEEP
#define	MOVIE_SIDE	AXIS_ACROSS
#define	MOVIE_TOP	AXIS_DOWN
#define	FRAME_ACTUAL	0
#define	FRAME_PERCENT	1
/* view options */
#define	VIEW_FRONT	0
#define	VIEW_SIDE	1
#define	VIEW_TOP	2
#define VIEW_THREE	3
#define	VIEW_ARRAY	4
#define	VIEW_CUBE	5
#define	VIEW_FENCE	6
#define	VIEW_TRANSP	7
#define	VIEW_XSEC	8
#define	VIEW_PICKS	9
#define VIEW_NAMELIST	{\
"front",\
"side",\
"top",\
"three",\
"array",\
"cube",\
"fence",\
"transp",\
}

/* transparency rate options */
#define VIEW_RATE_ALL	0
#define VIEW_RATE_TENTHS	1
#define VIEW_RATE_EACH	2
/* axes sizing relations */
#define	SHAPE_FIT	0
#define	SHAPE_TRUE	1
#define	SHAPE_PIXEL	2
/* four render margins in pixels */
#define	LEFT_MARGIN		80
#define	RIGHT_MARGIN		10
#define	TOP_MARGIN		32
#define	BASE_MARGIN		50
#define	HMARGIN		(LEFT_MARGIN+RIGHT_MARGIN)
#define VMARGIN		(TOP_MARGIN+BASE_MARGIN)
#define	MARGIN_LEFT		0
#define	MARGIN_RIGHT		1
#define	MARGIN_TOP		2
#define	MARGIN_BASE		3
/* axis drawing options */
#define	AXIS_LEFT	4
#define	TIC_LENGTH	10
#define	AXIS_BASE	8
/* text centering options */
#define	TEXT_H0		1
#define	TEXT_H50	2
#define	TEXT_H100	4
#define	TEXT_V0		8
#define	TEXT_V50	16
#define	TEXT_V100	32

/* View object */
typedef struct {
	int	wide;	/* drawing surface dimensions */
	int	hite;
	int	margins[4];
	int	movie;		/* side of cube animated */
	int	style;
	int	shape;		/* size relationship between axes */
	int	showpicks;
	int	nacross;		/* array across */
	int	across0;		/* array across start */
	int 	dacross;		/* array across increment */
	int 	ndown;		/* array down */
	int	down0;		/* array down start */
	int	ddown;		/* array down increment */
	int	fence;		/* fence mode */
	int	rate;		/* transparency rate */
	Map	map[DATA_NAXIS];	/* map axes */
	} *View;

/* typed returns */
extern View ViewInit (/*render*/);
extern Axis ViewDataAxis (/*view,imap*/);
extern Map ViewMap (/*view*/);
extern Map ViewMovieMap (/*view*/);