From d3a98cf6cbc3bd0b9efc570f58e8812c03931c18 Mon Sep 17 00:00:00 2001
From: Simon Rettberg
Date: Tue, 16 Oct 2018 10:08:48 +0200
Subject: Original 5.40

---
 hacks/glx/glschool_alg.h | 126 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 126 insertions(+)
 create mode 100644 hacks/glx/glschool_alg.h

(limited to 'hacks/glx/glschool_alg.h')

diff --git a/hacks/glx/glschool_alg.h b/hacks/glx/glschool_alg.h
new file mode 100644
index 0000000..339e778
--- /dev/null
+++ b/hacks/glx/glschool_alg.h
@@ -0,0 +1,126 @@
+/* glschool_alg.h, Copyright (c) 2005-2006 David C. Lambert <dcl@panix.com>
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation.  No representations are made about the suitability of this
+ * software for any purpose.  It is provided "as is" without express or 
+ * implied warranty.
+ */
+#ifndef __GLSCHOOL_ALG_H__
+#define __GLSCHOOL_ALG_H__
+
+typedef struct {
+	double	mins[3];
+	double	maxs[3];
+} BBox;
+
+#define BBOX_XMIN(b)		((b)->mins[0])
+#define BBOX_YMIN(b)		((b)->mins[1])
+#define BBOX_ZMIN(b)		((b)->mins[2])
+#define BBOX_MINS(b)		((b)->mins)
+#define BBOX_IMIN(b, i)		((b)->mins[(i)])
+
+#define BBOX_XMAX(b)		((b)->maxs[0])
+#define BBOX_YMAX(b)		((b)->maxs[1])
+#define BBOX_ZMAX(b)		((b)->maxs[2])
+#define BBOX_MAXS(b)		((b)->maxs)
+#define BBOX_IMAX(b, i)		((b)->maxs[(i)])
+
+#define BBOX_IMID(b, i)		(((b)->maxs[(i)] + (b)->mins[(i)])/2.0)
+#define BBOX_IRANGE(b, i)	((b)->maxs[(i)] - (b)->mins[(i)])
+
+typedef struct {
+	double			pos[3];
+	double			vel[3];
+	double			accel[3];
+	double			oldVel[3];
+	double			magic[3];
+	double			avgVel[3];
+} Fish;
+
+#define FISH_POS(f)			((f)->pos)
+#define FISH_X(f)			((f)->pos[0])
+#define FISH_Y(f)			((f)->pos[1])
+#define FISH_Z(f)			((f)->pos[2])
+
+#define FISH_VEL(f)			((f)->vel)
+#define FISH_VX(f)			((f)->vel[0])
+#define FISH_VY(f)			((f)->vel[1])
+#define FISH_VZ(f)			((f)->vel[2])
+
+#define FISH_ACC(f)			((f)->accel)
+#define FISH_MAGIC(f)		((f)->magic)
+#define FISH_OLDVEL(f)		((f)->oldVel)
+#define FISH_AVGVEL(f)		((f)->avgVel)
+#define FISH_IPOS(f, i)		((f)->pos[(i)])
+#define FISH_IVEL(f, i)		((f)->vel[(i)])
+#define FISH_IACC(f, i)		((f)->accel[(i)])
+#define FISH_IMAGIC(f, i)	((f)->magic[(i)])
+#define FISH_IOLDVEL(f, i)	((f)->oldVel[(i)])
+#define FISH_IAVGVEL(f, i)	((f)->avgVel[(i)])
+
+typedef struct {
+	int			nFish;
+	double		maxVel;
+	double		minVel;
+	double		distExp;
+	double		momentum;
+	double		accLimit;
+	double		minRadius;
+	double		minRadiusExp;
+	double		avoidFact;
+	double		matchFact;
+	double		centerFact;
+	double		targetFact;
+	double		distComp;
+	double		goal[3];
+	double		boxMids[3];
+	double		boxRanges[3];
+	BBox		theBox;
+	Fish		*theFish;
+} School;
+
+#define SCHOOL_NFISH(s)			((s)->nFish)
+#define SCHOOL_MAXVEL(s)		((s)->maxVel)
+#define SCHOOL_MINVEL(s)		((s)->minVel)
+#define SCHOOL_DISTEXP(s)		((s)->distExp)
+#define SCHOOL_MOMENTUM(s)		((s)->momentum)
+#define SCHOOL_ACCLIMIT(s)		((s)->accLimit)
+#define SCHOOL_MINRADIUS(s)		((s)->minRadius)
+#define SCHOOL_MINRADIUSEXP(s)	((s)->minRadiusExp)
+#define SCHOOL_MATCHFACT(s)		((s)->matchFact)
+#define SCHOOL_AVOIDFACT(s)		((s)->avoidFact)
+#define SCHOOL_CENTERFACT(s)	((s)->centerFact)
+#define SCHOOL_TARGETFACT(s)	((s)->targetFact)
+#define SCHOOL_DISTCOMP(s)		((s)->distComp)
+#define SCHOOL_GOAL(s)			((s)->goal)
+#define SCHOOL_IGOAL(s,i)		((s)->goal[(i)])
+#define SCHOOL_BBMINS(s)		((s)->bbox.mins)
+#define SCHOOL_BBMAXS(s)		((s)->bbox.maxs)
+#define SCHOOL_BBMIDS(s)		((s)->boxMids)
+#define SCHOOL_IMID(s,i)		((s)->boxMids[(i)])
+#define SCHOOL_BBRANGES(s)		((s)->boxRanges)
+#define SCHOOL_IRANGE(s,i)		((s)->boxRanges[(i)])
+#define SCHOOL_BBOX(s)			((s)->theBox)
+#define SCHOOL_FISHES(s)		((s)->theFish)
+#define SCHOOL_IFISH(s,i)		((s)->theFish[i])
+
+extern void		glschool_initFishes(School *);
+extern void		glschool_initFish(Fish *, double *, double *);
+
+extern void		glschool_applyMovements(School *);
+/* extern void		applyFishMovements(Fish *, BBox *, double, double, double); */
+
+extern void		glschool_freeSchool(School *);
+extern School		*glschool_initSchool(int, double, double, double, double, double, double, double, double, double, double, double);
+
+extern void		glschool_newGoal(School *);
+extern void		glschool_setBBox(School *, double, double, double, double, double, double);
+
+extern void		glschool_computeAccelerations(School *);
+extern double		glschool_computeNormalAndThetaToPlusZ(double *, double *);
+int			glschool_computeGroupVectors(School *, Fish *, double *, double *, double *);
+
+#endif /* __GLSCHOOL_ALG_H__ */
-- 
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