The Quake 2 tools as originally released under the GPL license.

bsp/qrad3/qrad.h

@@ -0,0 +1,158 @@
+/*
+===========================================================================
+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"
+#include "polylib.h"
+#include "threads.h"
+#include "lbmlib.h"
+
+#ifdef WIN32
+#include <windows.h>
+#endif
+
+typedef enum
+{
+	emit_surface,
+	emit_point,
+	emit_spotlight
+} emittype_t;
+
+
+
+typedef struct directlight_s
+{
+	struct directlight_s *next;
+	emittype_t	type;
+
+	float		intensity;
+	int			style;
+	vec3_t		origin;
+	vec3_t		color;
+	vec3_t		normal;		// for surfaces and spotlights
+	float		stopdot;		// for spotlights
+} directlight_t;
+
+
+// the sum of all tranfer->transfer values for a given patch
+// should equal exactly 0x10000, showing that all radiance
+// reaches other patches
+typedef struct
+{
+	unsigned short	patch;
+	unsigned short	transfer;
+} transfer_t;
+
+
+#define	MAX_PATCHES	65000			// larger will cause 32 bit overflows
+
+typedef struct patch_s
+{
+	winding_t	*winding;
+	struct patch_s		*next;		// next in face
+	int			numtransfers;
+	transfer_t	*transfers;
+
+	int			cluster;			// for pvs checking
+	vec3_t		origin;
+	dplane_t	*plane;
+
+	qboolean	sky;
+
+	vec3_t		totallight;			// accumulated by radiosity
+									// does NOT include light
+									// accounted for by direct lighting
+	float		area;
+
+	// illuminance * reflectivity = radiosity
+	vec3_t		reflectivity;
+	vec3_t		baselight;			// emissivity only
+
+	// each style 0 lightmap sample in the patch will be
+	// added up to get the average illuminance of the entire patch
+	vec3_t		samplelight;
+	int			samples;		// for averaging direct light
+} patch_t;
+
+extern	patch_t		*face_patches[MAX_MAP_FACES];
+extern	entity_t	*face_entity[MAX_MAP_FACES];
+extern	vec3_t		face_offset[MAX_MAP_FACES];		// for rotating bmodels
+extern	patch_t		patches[MAX_PATCHES];
+extern	unsigned	num_patches;
+
+extern	int		leafparents[MAX_MAP_LEAFS];
+extern	int		nodeparents[MAX_MAP_NODES];
+
+extern	float	lightscale;
+
+
+void MakeShadowSplits (void);
+
+//==============================================
+
+
+void BuildVisMatrix (void);
+qboolean CheckVisBit (unsigned p1, unsigned p2);
+
+//==============================================
+
+extern	float ambient, maxlight;
+
+void LinkPlaneFaces (void);
+
+extern	qboolean	extrasamples;
+extern int numbounce;
+
+extern	directlight_t	*directlights[MAX_MAP_LEAFS];
+
+extern	byte	nodehit[MAX_MAP_NODES];
+
+void BuildLightmaps (void);
+
+void BuildFacelights (int facenum);
+
+void FinalLightFace (int facenum);
+
+qboolean PvsForOrigin (vec3_t org, byte *pvs);
+
+int TestLine_r (int node, vec3_t start, vec3_t stop);
+
+void CreateDirectLights (void);
+
+dleaf_t		*PointInLeaf (vec3_t point);
+
+
+extern	dplane_t	backplanes[MAX_MAP_PLANES];
+extern	int			fakeplanes;					// created planes for origin offset 
+
+extern	float	subdiv;
+
+extern	float	direct_scale;
+extern	float	entity_scale;
+
+int	PointInLeafnum (vec3_t point);
+void MakeTnodes (dmodel_t *bm);
+void MakePatches (void);
+void SubdividePatches (void);
+void PairEdges (void);
+void CalcTextureReflectivity (void);