Initial release of Maemo 5 port of gnuplot

[gnuplot] / src / getcolor.h

diff --git a/src/getcolor.h b/src/getcolor.h
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+++ b/src/getcolor.h
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+/*
+ * $Id: getcolor.h,v 1.9 2005/08/07 09:43:28 mikulik Exp $
+ */
+
+/* GNUPLOT - getcolor.h */
+
+/* Routines + constants for mapping interval [0,1] into another [0,1] to be
+ * used to get RGB triplets from gray (palette of smooth colours).
+ *
+ * Note: The code in getcolor.h,.c cannot be inside color.h,.c since gplt_x11.c
+ * compiles with getcolor.o, so it cannot load the other huge staff.
+ *
+ */
+
+/*[
+ *
+ * Petr Mikulik, since December 1998
+ * Copyright: open source as much as possible
+ *
+]*/
+
+
+#ifndef GETCOLOR_H
+#define GETCOLOR_H
+
+#include "syscfg.h"
+#include "color.h"
+
+enum color_models_id {
+    C_MODEL_RGB = 'r',
+    C_MODEL_HSV = 'h',
+    C_MODEL_CMY = 'c',
+    C_MODEL_YIQ = 'y',
+    C_MODEL_XYZ = 'x'
+};
+
+
+/* main gray --> rgb color mapping */
+void rgb1_from_gray __PROTO(( double gray, rgb_color *color ));
+void rgb255_from_rgb1 __PROTO(( rgb_color rgb1, rgb255_color *rgb255 ));
+/* main gray --> rgb color mapping as above, with take care of palette maxcolors */
+void rgb1maxcolors_from_gray __PROTO(( double gray, rgb_color *color ));
+void rgb255maxcolors_from_gray __PROTO(( double gray, rgb255_color *rgb255 ));
+
+/* used to (de-)serialize color/gradient information */
+char *gradient_entry_to_str __PROTO(( gradient_struct *gs ));
+void str_to_gradient_entry __PROTO(( char *s, gradient_struct *gs ));
+
+/* check if two palettes p1 and p2 differ */
+int palettes_differ __PROTO(( t_sm_palette *p1, t_sm_palette *p2 ));
+
+/* construct minimal gradient to approximate palette */
+gradient_struct *approximate_palette __PROTO(( t_sm_palette *palette, int maxsamples, double allowed_deviation, int *gradient_num ));
+
+double GetColorValueFromFormula __PROTO((int formula, double x));
+
+extern const char *ps_math_color_formulae[];
+
+#endif /* GETCOLOR_H */
+
+/* eof getcolor.h */