ftp://ftp.smr.ru/pub/0/FreeBSD/releases/distfiles/xscreensaver-3.16.tar.gz

[xscreensaver] / utils / hsv.h

diff --git a/utils/hsv.h b/utils/hsv.h
new file mode 100644 (file)
index 0000000..e0fdfb0
--- /dev/null
+++ b/utils/hsv.h
@@ -0,0 +1,27 @@
+/* xscreensaver, Copyright (c) 1992, 1997 Jamie Zawinski <jwz@jwz.org>
+ *
+ * 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 __HSV_H__
+#define __HSV_H__
+
+/* Converts between RGB and HSV color spaces.
+   R, G, and B are in the range 0 - 65535;
+   H is in the range 0 - 360;
+   S and V are in the range 0.0 - 1.0.
+ */
+extern void hsv_to_rgb (int h, double s, double v,
+                       unsigned short *r,
+                       unsigned short *g,
+                       unsigned short *b);
+extern void rgb_to_hsv (unsigned short r, unsigned short g, unsigned short b,
+                       int *h, double *s, double *v);
+
+#endif /* __HSV_H__ */