UltimateZoneBuilder/Source/Rendering/PixelColor.cs

108 lines
2.2 KiB
C#

#region ================== Copyright (c) 2007 Pascal vd Heiden
/*
* Copyright (c) 2007 Pascal vd Heiden, www.codeimp.com
* This program is released under GNU General Public License
*
* 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.
*
*/
#endregion
#region ================== Namespaces
using System;
using System.Collections;
using System.Collections.Generic;
using System.Globalization;
using System.Text;
using System.Reflection;
using System.Drawing;
#endregion
namespace CodeImp.DoomBuilder.Rendering
{
public struct PixelColor
{
#region ================== Variables
// Members
public byte b;
public byte g;
public byte r;
public byte a;
#endregion
#region ================== Constructors
// Constructor
public PixelColor(byte a, byte r, byte g, byte b)
{
// Initialize
this.a = a;
this.r = r;
this.g = g;
this.b = b;
}
// Constructor
public PixelColor(PixelColor p, byte a)
{
// Initialize
this.a = a;
this.r = p.r;
this.g = p.g;
this.b = p.b;
}
#endregion
#region ================== Static Methods
// Construct from color
public static PixelColor FromColor(Color c)
{
return new PixelColor(c.A, c.R, c.G, c.B);
}
// Construct from int
public static PixelColor FromInt(int c)
{
return FromColor(Color.FromArgb(c));
}
// To int
public int ToInt()
{
return Color.FromArgb(a, r, g, b).ToArgb();
}
#endregion
#region ================== Methods
// This blends two colors with respect to alpha
public PixelColor Blend(PixelColor a, PixelColor b)
{
PixelColor c = new PixelColor();
float ba;
ba = (float)a.a * 0.003921568627450980392156862745098f;
c.r = (byte)((float)a.r * (1f - ba) + (float)b.r * ba);
c.g = (byte)((float)a.g * (1f - ba) + (float)b.g * ba);
c.b = (byte)((float)a.b * (1f - ba) + (float)b.b * ba);
c.a = (byte)((float)a.a * (1f - ba) + ba);
return c;
}
#endregion
}
}