/// <summary>
/// Returns an image with the Hue modified by the specified ammount
/// </summary>
/// <param name="image"></param>
/// <param name="h"></param>
/// <returns></returns>
public static Bitmap ChangeHue(Bitmap image, float h)
{
bool IsTransparent = false;
try
{
//Set up progress
Global.bTackPixelProgress = true;
Global.iCurrentOp_PixelCount = 0;
Global.iCurrentOp_PixelTotal = image.Width * image.Height;
UnsafeBitmap newUBMP = new UnsafeBitmap(image);
newUBMP.LockImage();
Color cColor;
for (int iWidth = 0; iWidth < image.Width; iWidth++)
{
for (int iHeight = 0; iHeight < image.Height; iHeight++)
{
cColor = newUBMP.GetPixel(iWidth, iHeight);
HLS newHLS = new HLS();
newHLS.Red = cColor.R;
newHLS.Blue = cColor.B;
newHLS.Green = cColor.G;
newHLS.Hue += h;
newHLS.ToRGB();
if (!IsTransparent)
{
IsTransparent = Global.CheckPixelTransparency(cColor);
}
cColor = Color.FromArgb(newHLS.Red, newHLS.Green, newHLS.Blue);
newUBMP.SetPixel(iWidth, iHeight, cColor);
Global.iCurrentOp_PixelCount++;
}
}
newUBMP.UnlockImage();
Global.bTackPixelProgress = false;
}
catch (Exception ex)
{
Global.WriteToLog(ex);
}
if (IsTransparent)
{
image.MakeTransparent();
}
return(image);
}
/// <summary>
/// Returns the source image with the luminosity modified by the specified ammount
/// </summary>
/// <param name="sourceimage"></param>
/// <param name="l"></param>
/// <returns></returns>
public static Bitmap ChangeLuminosity(Bitmap image, float l)
{
bool IsTransparent = false;
try
{
//Set up progress
Global.bTackPixelProgress = true;
Global.iCurrentOp_PixelCount = 0;
Global.iCurrentOp_PixelTotal = image.Width * image.Height;
UnsafeBitmap newUBMP = new UnsafeBitmap(image);
newUBMP.LockImage();
Color c;
for (int iWidth = 0; iWidth < image.Width; iWidth++)
{
for (int iHeight = 0; iHeight < image.Height; iHeight++)
{
c = newUBMP.GetPixel(iWidth, iHeight);
HLS newHLS = new HLS();
newHLS.Red = c.R;
newHLS.Blue = c.B;
newHLS.Green = c.G;
if (newHLS.Luminance + l >= 1f)
{
newHLS.Luminance = 1f;
}
else if (newHLS.Luminance + l <= 0.0f)
{
newHLS.Luminance = 0.0f;
}
else
{
newHLS.Luminance += l;
}
newHLS.ToRGB();
if (!IsTransparent)
{
IsTransparent = Global.CheckPixelTransparency(c);
}
c = Color.FromArgb(newHLS.Red, newHLS.Green, newHLS.Blue);
newUBMP.SetPixel(iWidth, iHeight, c);
Global.iCurrentOp_PixelCount++;
}
}
newUBMP.UnlockImage();
Global.bTackPixelProgress = false;
}
catch (Exception ex)
{
Global.WriteToLog(ex);
}
if (IsTransparent)
{
image.MakeTransparent();
}
return(image);
}