From 45e08ccde95c84932557701235558e72cdc95f1b Mon Sep 17 00:00:00 2001
From: pixel <pixel>
Date: Sat, 28 Oct 2006 16:50:46 +0000
Subject: Fixing caps in class names.

---
 lib/mcolor.cc | 37 ++++++++++++++++++++++++++++++++++++-
 1 file changed, 36 insertions(+), 1 deletion(-)

(limited to 'lib/mcolor.cc')

diff --git a/lib/mcolor.cc b/lib/mcolor.cc
index 618ae4f..a8c6d16 100644
--- a/lib/mcolor.cc
+++ b/lib/mcolor.cc
@@ -17,7 +17,7 @@
  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
-/* $Id: mcolor.cc,v 1.9 2006-01-31 17:02:39 pixel Exp $ */
+/* $Id: mcolor.cc,v 1.10 2006-10-28 16:50:46 pixel Exp $ */
 
 #include <SDL.h>
 #include <SDL_opengl.h>
@@ -71,6 +71,41 @@ void mogltk::ColorP::fromHSV(double H, double S, double V) {
     c.R = R * 255; c.G = G * 255; c.B = B * 255;
 }
 
+void mogltk::ColorP::toHSV(double * H, double * S, double * V) {
+    double R, G, B, cMAX, cMIN;
+
+    R = ((double) c.R) / 255;
+    G = ((double) c.G) / 255;
+    B = ((double) c.B) / 255;
+
+    cMAX = MAX(MAX(R, G), B);
+    cMIN = MIN(MIN(R, G), B);
+
+    if (cMAX == cMIN) {
+        *H = 0;
+        *S = 0;
+        *V = cMAX;
+        return;
+    }
+
+    if ((cMAX == R) && (G >= B)) {
+        *H = 60 * ((G - B) / (cMAX - cMIN));
+    } else if ((cMAX == R) && (G < B)) {
+        *H = 60 * ((G - B) / (cMAX - cMIN)) + 360;
+    } else if (cMAX == G) {
+        *H = 60 * ((B - R) / (cMAX - cMIN)) + 120;
+    } else {
+        *H = 60 * ((R - G) / (cMAX - cMIN)) + 240;
+    }
+
+    if (cMAX == 0) {
+        *S = 0;
+    } else {
+        *S = (cMAX - cMIN) / cMAX;
+    }
+    *V = cMAX;
+}
+
 void mogltk::ColorP::Norm() {
     c.R = MIN(MAX(c.R, Min.R), Max.R);
     c.G = MIN(MAX(c.R, Min.G), Max.G);
-- 
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