Changes the color brightness. - CSharp System.Drawing

CSharp examples for System.Drawing:Color Brightness

  1. HOME
  2. CSharp
  3. System.Drawing
  4. Color Brightness

Description

Changes the color brightness.

Demo Code

// Copyright by the Spark Development Network
using System.Drawing;
using System;/*  w  ww .  j av a  2s  .c  o m*/

public class Main{
        /// <summary>
        /// Changes the color brightness.
        /// </summary>
        /// <param name="color">The color.</param>
        /// <param name="correctionFactor">The correction factor.</param>
        /// <returns></returns>
        public static Color ChangeColorBrightness( this Color color, float correctionFactor )
        {
            float red = (float)color.R;
            float green = (float)color.G;
            float blue = (float)color.B;

            if ( correctionFactor < 0 )
            {
                correctionFactor = 1 + correctionFactor;
                red *= correctionFactor;
                green *= correctionFactor;
                blue *= correctionFactor;
            }
            else
            {
                red = (255 - red) * correctionFactor + red;
                green = (255 - green) * correctionFactor + green;
                blue = (255 - blue) * correctionFactor + blue;
            }

            return Color.FromArgb( color.A, (int)red, (int)green, (int)blue );
        }
}

Related Tutorials