Initial release of Maemo 5 port of gnuplot

[gnuplot] / src / contour.h

diff --git a/src/contour.h b/src/contour.h
new file mode 100644 (file)
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+/*
+ * $Id: contour.h,v 1.9 2004/08/09 00:51:29 sfeam Exp $
+ */
+
+/* GNUPLOT - contour.h */
+
+/*[
+ * Copyright 1999, 2004   Thomas Williams, Colin Kelley
+ *
+ * Permission to use, copy, and distribute this software and its
+ * documentation for any purpose with or without fee is hereby granted,
+ * provided that the above copyright notice appear in all copies and
+ * that both that copyright notice and this permission notice appear
+ * in supporting documentation.
+ *
+ * Permission to modify the software is granted, but not the right to
+ * distribute the complete modified source code.  Modifications are to
+ * be distributed as patches to the released version.  Permission to
+ * distribute binaries produced by compiling modified sources is granted,
+ * provided you
+ *   1. distribute the corresponding source modifications from the
+ *    released version in the form of a patch file along with the binaries,
+ *   2. add special version identification to distinguish your version
+ *    in addition to the base release version number,
+ *   3. provide your name and address as the primary contact for the
+ *    support of your modified version, and
+ *   4. retain our contact information in regard to use of the base
+ *    software.
+ * Permission to distribute the released version of the source code along
+ * with corresponding source modifications in the form of a patch file is
+ * granted with same provisions 2 through 4 for binary distributions.
+ *
+ * This software is provided "as is" without express or implied warranty
+ * to the extent permitted by applicable law.
+]*/
+
+#ifndef GNUPLOT_CONTOUR_H
+# define GNUPLOT_CONTOUR_H
+
+/* #if... / #include / #define collection: */
+
+#include "syscfg.h"
+#include "gp_types.h"
+
+#include "dynarray.h"
+#include "graph3d.h"
+
+#define DEFAULT_CONTOUR_LEVELS 5
+#define DEFAULT_NUM_APPROX_PTS 5
+#define DEFAULT_CONTOUR_ORDER  4
+#define MAX_BSPLINE_ORDER      10
+
+/* Type definitions */
+
+typedef enum en_contour_kind {
+    /* Method of drawing the contour lines found */
+    CONTOUR_KIND_LINEAR,
+    CONTOUR_KIND_CUBIC_SPL,
+    CONTOUR_KIND_BSPLINE
+} t_contour_kind;
+
+typedef enum en_contour_levels_kind {
+    /* How contour levels are set */
+    LEVELS_AUTO,               /* automatically selected */
+    LEVELS_INCREMENTAL,                /* user specified start & incremnet */
+    LEVELS_DISCRETE            /* user specified discrete levels */
+} t_contour_levels_kind;
+
+
+/* Used to allocate the tri-diag matrix. */
+typedef double tri_diag[3];
+
+/* Variables of contour.c needed by other modules: */
+
+extern char contour_format[32];
+extern t_contour_kind contour_kind;
+extern t_contour_levels_kind contour_levels_kind;
+extern int contour_levels;
+extern int contour_order;
+extern int contour_pts;
+
+/* storage for z levels to draw contours at */
+extern dynarray dyn_contour_levels_list;
+#define contour_levels_list ((double *)dyn_contour_levels_list.v)
+
+/* Prototypes of functions exported by contour.c */
+
+struct gnuplot_contours *contour __PROTO((int num_isolines, struct iso_curve *iso_lines));
+int solve_tri_diag __PROTO((tri_diag m[], double r[], double x[], int n));
+
+
+#endif /* GNUPLOT_CONTOUR_H */