Refactored video/ subsystem to make adding other methods of rendering (in particular...

[supertux.git] / src / video / color.hpp

diff --git a/src/video/color.hpp b/src/video/color.hpp
index 7cbbd72..e3ff678 100644 (file)
--- a/src/video/color.hpp
+++ b/src/video/color.hpp
@@ -1,7 +1,28 @@
+//  $Id$
+//
+//  SuperTux
+//  Copyright (C) 2006 Matthias Braun <matze@braunis.de>
+//
+//  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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
 #ifndef __COLOR_HPP__
 #define __COLOR_HPP__
 
 #include <vector>
+#include <assert.h>
+#include "log.hpp"
 
 class Color
 {
@@ -11,9 +32,14 @@ public:
   { }
   Color(float red, float green, float blue, float alpha = 1.0)
     : red(red), green(green), blue(blue), alpha(alpha)
-  { }
+  {
+#ifdef DEBUG
+    check_color_ranges();
+#endif
+  }
   Color(const std::vector<float>& vals)
   {
+    assert(vals.size() >= 3);
     red = vals[0];
     green = vals[1];
     blue = vals[2];
@@ -21,10 +47,36 @@ public:
       alpha = vals[3];
     else
       alpha = 1.0;
+#ifdef DEBUG
+    check_color_ranges();
+#endif
+  }
+
+  bool operator==(const Color& other) const
+  {
+    return red == other.red && green == other.green && blue == other.blue
+           && alpha == other.alpha;
+  }
+
+  void check_color_ranges()
+  {
+    if(red < 0 || red > 1.0 || green < 0 || green > 1.0
+            || blue < 0 || blue > 1.0
+            || alpha < 0 || alpha > 1.0)
+      log_warning << "color value out of range: " << red << ", " << green << ", " << blue << ", " << alpha << std::endl;
+  }
+
+  float greyscale() const
+  {
+    return red * 0.30 + green * 0.59 + blue * 0.11;
+  }
+
+  bool operator < (const Color& other) const
+  {
+    return greyscale() < other.greyscale();
   }
 
   float red, green, blue, alpha;
 };
 
 #endif
-