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csutil/cscolor.h

00001 /*
00002     Copyright (C) 1998-2001 by Jorrit Tyberghein
00003 
00004     This library is free software; you can redistribute it and/or
00005     modify it under the terms of the GNU Library General Public
00006     License as published by the Free Software Foundation; either
00007     version 2 of the License, or (at your option) any later version.
00008 
00009     This library is distributed in the hope that it will be useful,
00010     but WITHOUT ANY WARRANTY; without even the implied warranty of
00011     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012     Library General Public License for more details.
00013 
00014     You should have received a copy of the GNU Library General Public
00015     License along with this library; if not, write to the Free
00016     Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
00017 */
00018 
00019 #ifndef __CS_CSCOLOR_H__
00020 #define __CS_CSCOLOR_H__
00021 
00022 #include "csextern.h"
00023 
00029 class csColor
00030 {
00031 public:
00033   float red;
00035   float green;
00037   float blue;
00038 
00039 public:
00041   csColor () { }
00043   csColor (float r, float g, float b)
00044   { red = r; green = g; blue = b; }
00046   csColor (const csColor& c)
00047   { red = c.red; green = c.green; blue = c.blue; }
00049   void Set (float r, float g, float b)
00050   { red = r; green = g; blue = b; }
00052   void Clamp (float r, float g, float b)
00053   {
00054     if (red > r) red = r;
00055     if (green > g) green = g;
00056     if (blue > b) blue = b;
00057   }
00059   void ClampDown ()
00060   {
00061     if (red < 0) red = 0;
00062     if (green < 0) green = 0;
00063     if (blue < 0) blue = 0;
00064   }
00066   csColor& operator= (const csColor& c)
00067   { red = c.red; green = c.green; blue = c.blue; return *this; }
00069   csColor& operator*= (float f)
00070   { red *= f; green *= f; blue *= f; return *this; }
00072   csColor& operator+= (const csColor& c)
00073   { red += c.red; green += c.green; blue += c.blue; return *this; }
00075   csColor& operator-= (const csColor& c)
00076   { red -= c.red; green -= c.green; blue -= c.blue; return *this; }
00078   void Add (float r, float g, float b)
00079   { red += r; green += g; blue += b; }
00081   void Subtract (float r, float g, float b)
00082   { red -= r; green -= g; blue -= b; }
00083 };
00084 
00086 inline csColor operator* (const csColor& s, float f)
00087 { csColor c (s); c *= f; return c; }
00088 
00090 inline csColor operator* (float f, const csColor& s)
00091 { csColor c (s); c *= f; return c; }
00092 
00094 inline csColor operator+ (const csColor& s1, const csColor& s2)
00095 { csColor c (s1); c += s2; return c; }
00097 inline csColor operator- (const csColor& s1, const csColor& s2)
00098 { csColor c (s1); c -= s2; return c; }
00099 
00100 #endif // __CS_CSCOLOR_H__

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