Q2Tools source - didn't import this in initially

[xonotic/netradiant.git] / tools / quake2 / extra / bsp / qvis3 / vis.h

diff --git a/tools/quake2/extra/bsp/qvis3/vis.h b/tools/quake2/extra/bsp/qvis3/vis.h
new file mode 100644 (file)
index 0000000..b4bf0c1
--- /dev/null
+++ b/tools/quake2/extra/bsp/qvis3/vis.h
@@ -0,0 +1,149 @@
+/*
+===========================================================================
+Copyright (C) 1997-2006 Id Software, Inc.
+
+This file is part of Quake 2 Tools source code.
+
+Quake 2 Tools source code is free software; you can redistribute it
+and/or modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation; either version 2 of the License,
+or (at your option) any later version.
+
+Quake 2 Tools source code is distributed in the hope that it will be
+useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Quake 2 Tools source code; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+===========================================================================
+*/
+
+#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;
+
+#define MAX_POINTS_ON_WINDING  64
+#define        MAX_POINTS_ON_FIXED_WINDING     12
+
+typedef struct
+{
+       qboolean        original;                       // don't free, it's part of the portal
+       int             numpoints;
+       vec3_t  points[MAX_POINTS_ON_FIXED_WINDING];                    // variable sized
+} winding_t;
+
+winding_t      *NewWinding (int points);
+void           FreeWinding (winding_t *w);
+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
+       
+       vec3_t          origin; // for fast clip testing
+       float           radius;
+
+       winding_t       *winding;
+       vstatus_t       status;
+       byte            *portalfront;   // [portals], preliminary
+       byte            *portalflood;   // [portals], intermediate
+       byte            *portalvis;             // [portals], final
+
+       int                     nummightsee;    // bit count on portalflood for sort
+} 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
+{
+       byte            mightsee[MAX_PORTALS/8];                // bit string
+       struct pstack_s *next;
+       leaf_t          *leaf;
+       portal_t        *portal;        // portal exiting
+       winding_t       *source;
+       winding_t       *pass;
+
+       winding_t       windings[3];    // source, pass, temp in any order
+       int                     freewindings[3];
+
+       plane_t         portalplane;
+} pstack_t;
+
+typedef struct
+{
+       portal_t        *base;
+       int                     c_chains;
+       pstack_t        pstack_head;
+} threaddata_t;
+
+
+
+extern int                     numportals;
+extern int                     portalclusters;
+
+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 int                     testlevel;
+
+extern byte            *uncompressed;
+
+extern int             leafbytes, leaflongs;
+extern int             portalbytes, portallongs;
+
+
+void LeafFlow (int leafnum);
+
+
+void BasePortalVis (int portalnum);
+void BetterPortalVis (int portalnum);
+void PortalFlow (int portalnum);
+
+extern portal_t        *sorted_portals[MAX_MAP_PORTALS*2];
+
+int CountBits (byte *bits, int numbits);