The source release of the qutils.

qutils/VIS/VIS.H

@@ -0,0 +1,125 @@
+// vis.h
+
+#include "cmdlib.h"
+#include "mathlib.h"
+#include "bspfile.h"
+
+#define	MAX_PORTALS	32768
+
+#define	PORTALFILE	"PRT1"
+
+#define	ON_EPSILON	0.1
+
+typedef struct
+{
+	vec3_t		normal;
+	float		dist;
+} plane_t;
+
+typedef struct
+{
+	qboolean	original;			// don't free, it's part of the portal
+	int		numpoints;
+	vec3_t	points[8];			// variable sized
+} winding_t;
+
+#define MAX_POINTS_ON_WINDING	64
+
+winding_t	*NewWinding (int points);
+void		FreeWinding (winding_t *w);
+winding_t *ClipWinding (winding_t *in, plane_t *split, qboolean keepon);
+winding_t	*CopyWinding (winding_t *w);
+
+
+typedef enum {stat_none, stat_working, stat_done} vstatus_t;
+typedef struct
+{
+	plane_t		plane;	// normal pointing into neighbor
+	int			leaf;	// neighbor
+	winding_t	*winding;
+	vstatus_t	status;
+	byte		*visbits;
+	byte		*mightsee;
+	int			nummightsee;
+	int			numcansee;
+} portal_t;
+
+typedef struct seperating_plane_s
+{
+	struct seperating_plane_s *next;
+	plane_t		plane;		// from portal is on positive side
+} sep_t;
+
+
+typedef struct passage_s
+{
+	struct passage_s	*next;
+	int			from, to;		// leaf numbers
+	sep_t				*planes;
+} passage_t;
+
+#define	MAX_PORTALS_ON_LEAF		128
+typedef struct leaf_s
+{
+	int			numportals;
+	passage_t	*passages;
+	portal_t	*portals[MAX_PORTALS_ON_LEAF];
+} leaf_t;
+
+	
+typedef struct pstack_s
+{
+	struct pstack_s	*next;
+	leaf_t		*leaf;
+	portal_t	*portal;	// portal exiting
+	winding_t	*source, *pass;
+	plane_t		portalplane;
+	byte		*mightsee;		// bit string
+} pstack_t;
+
+typedef struct
+{
+	byte		*leafvis;		// bit string
+	portal_t	*base;
+	pstack_t	pstack_head;
+} threaddata_t;
+
+
+#ifdef __alpha
+#include <pthread.h>
+extern	pthread_mutex_t	*my_mutex;
+#define	LOCK	pthread_mutex_lock (my_mutex)
+#define	UNLOCK	pthread_mutex_unlock (my_mutex)
+#else
+#define	LOCK
+#define	UNLOCK
+#endif
+
+
+extern	int			numportals;
+extern	int			portalleafs;
+
+extern	portal_t	*portals;
+extern	leaf_t		*leafs;
+
+extern	int			c_portaltest, c_portalpass, c_portalcheck;
+extern	int			c_portalskip, c_leafskip;
+extern	int			c_vistest, c_mighttest;
+extern	int			c_chains;
+
+extern	byte	*vismap, *vismap_p, *vismap_end;	// past visfile
+
+extern	qboolean		showgetleaf;
+extern	int			testlevel;
+
+extern	byte		*uncompressed;
+extern	int			bitbytes;
+extern	int			bitlongs;
+
+
+void LeafFlow (int leafnum);
+void BasePortalVis (void);
+
+void PortalFlow (portal_t *p);
+
+void CalcAmbientSounds (void);