Import XaoS r489 (trunk after version 3.5)

1 files changed, 170 insertions, 0 deletions

diff --git a/src/include/fractal.h b/src/include/fractal.h
new file mode 100644
index 0000000..188ac8d
--- /dev/null
+++ b/src/include/fractal.h
@@ -0,0 +1,170 @@
+/* 
+ *     XaoS, a fast portable realtime fractal zoomer 
+ *                  Copyright (C) 1996,1997 by
+ *
+ *      Jan Hubicka          (hubicka@paru.cas.cz)
+ *      Thomas Marsh         (tmarsh@austin.ibm.com)
+ *
+ * This program 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.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#ifndef FRACTAL1_H
+#define FRACTAL1_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "config.h"
+#include "fconfig.h"
+#define INCOLORING 11
+#define OUTCOLORING 11
+#define TCOLOR 15
+
+    typedef struct {
+	number_t y0, k;
+    } symetrytype;
+
+    struct symetryinfo {
+	number_t xsym, ysym;
+	int nsymetries;
+	CONST symetrytype *symetry;
+    };
+    typedef struct {
+	number_t mc, nc;
+	number_t mi, ni;
+    } vrect;
+    typedef struct {
+	number_t cr, ci;
+	number_t rr, ri;
+    } vinfo;
+    typedef unsigned int (*iterationfunc) (number_t, number_t, number_t,
+					   number_t) CONSTF REGISTERS(3);
+    struct formula {
+	int magic;
+#ifndef SLOWFUNCPTR
+	iterationfunc calculate, calculate_periodicity, smooth_calculate,
+	    smooth_calculate_periodicity;
+#endif
+	void (*calculate_julia) (struct image * img, register number_t pre,
+				 register number_t pim);
+	CONST char *name[2];
+	CONST char *shortname;
+	vinfo v;
+	int hasperiodicity;
+	int mandelbrot;
+	number_t pre, pim;
+	struct symetryinfo (out[OUTCOLORING + 1]);
+	struct symetryinfo (in[INCOLORING + 1]);
+	int flags;
+    };
+
+    struct fractal_context {
+	number_t pre, pim;
+	number_t bre, bim;
+	CONST struct formula *currentformula;
+	number_t angle;
+	int periodicity;
+	unsigned int maxiter;
+	number_t bailout;
+	int coloringmode, incoloringmode;
+	int intcolor, outtcolor;
+	int mandelbrot;
+	int plane;
+	int version;
+	int range;
+	float windowwidth, windowheight;
+	vinfo s;
+	vrect rs;
+	number_t sin, cos;
+	int slowmode;		/* 1 in case we want to be exact, not fast */
+	/*values temporary filled by set_fractal_context */
+	iterationfunc calculate[2];
+	number_t periodicity_limit;
+	struct palette *palette;	/*fractal's palette */
+    };
+    typedef struct fractal_context fractal_context;
+    typedef struct {
+	double y0, k, kk, y0k;
+    } symetry2;
+
+    struct symetryinfo2 {
+	number_t xsym, ysym;
+	int nsymetries;
+	symetry2 *symetry;
+	number_t xmul, ymul, xdist, ydist;
+    };
+#define STARTZERO 1
+#define JULIA_BTRACE 2
+#define MANDEL_BTRACE 4
+
+#ifdef SFFE_USING
+#define SFFE_FRACTAL 8
+#endif
+
+#define BTRACEOK ((cformula.flags&(2<<cfractalc.mandelbrot))&&!cfractalc.incoloringmode&&cfractalc.coloringmode!=7)
+#define rotate(f,x,y) { \
+  number_t tmp; \
+  tmp=(x)*(f).cos-(y)*(f).sin; \
+  y=(x)*(f).sin+(y)*(f).cos; \
+  x=tmp; \
+}
+#define rotateback(f,x,y) { \
+  number_t tmp; \
+  tmp=(x)*(f).cos+(y)*(f).sin; \
+  y=-(x)*(f).sin+(y)*(f).cos; \
+  x=tmp; \
+}
+
+    extern struct symetryinfo2 cursymetry;
+    extern struct fractal_context cfractalc;
+    extern struct formula cformula;
+    extern struct palette cpalette;
+    extern struct image cimage;
+
+#ifdef STATISTICS
+/*This is an statistics variables printed from various parts
+ *of XaoS. 
+ */
+    extern int nadded2, nsymetry2, nskipped2;
+    extern int tocalculate2, avoided2, frames2;
+    extern int ncalculated2, ninside2;
+    extern int niter2, niter1;
+    extern int nperi;
+
+
+    extern int iters2, guessed2, unguessed2, total2;
+
+#endif
+
+    void set_formula(fractal_context *, int);
+    void set_fractalc(fractal_context *, struct image *img);
+    void fractalc_resize_to(fractal_context *, float, float);
+    void update_view(fractal_context *);
+    void free_fractalc(fractal_context *);
+    fractal_context *make_fractalc(CONST int, float, float);
+    void speed_test(fractal_context *, struct image *img);
+    unsigned int calculateswitch(register number_t x1,
+				 register number_t y1,
+				 register number_t x2,
+				 register number_t y2,
+				 int periodicity) REGISTERS(3);
+
+/* needs struct formula */
+#include <formulas.h>
+
+#ifdef __cplusplus
+}
+#endif
+#endif				/* FRACTAL_H */