corrade-vassal – Rev 1
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/// <summary>**************************************************************************
///
/// $Id: LookUpTable16LinearSRGBtoSRGB.java,v 1.1 2002/07/25 14:56:47 grosbois Exp $
///
/// Copyright Eastman Kodak Company, 343 State Street, Rochester, NY 14650
/// $Date $
/// ***************************************************************************
/// </summary>
using System;
using ICCCurveType = CSJ2K.Icc.Tags.ICCCurveType;
namespace CSJ2K.Icc.Lut
{
/// <summary> A Linear 16 bit SRGB to SRGB lut
///
/// </summary>
/// <version> 1.0
/// </version>
/// <author> Bruce A. Kern
/// </author>
public class LookUpTable16LinearSRGBtoSRGB:LookUpTable16
{
/// <summary> Factory method for creating the lut.</summary>
/// <param name="wShadowCutoff">size of shadow region
/// </param>
/// <param name="dfShadowSlope">shadow region parameter
/// </param>
/// <param name="ksRGBLinearMaxValue">size of lut
/// </param>
/// <param name="ksRGB8ScaleAfterExp">post shadow region parameter
/// </param>
/// <param name="ksRGBExponent">post shadow region parameter
/// </param>
/// <param name="ksRGB8ReduceAfterEx">post shadow region parameter
/// </param>
/// <returns> the lut
/// </returns>
public static LookUpTable16LinearSRGBtoSRGB createInstance(int wShadowCutoff, double dfShadowSlope, int ksRGBLinearMaxValue, double ksRGB8ScaleAfterExp, double ksRGBExponent, double ksRGB8ReduceAfterEx)
{
return new LookUpTable16LinearSRGBtoSRGB(wShadowCutoff, dfShadowSlope, ksRGBLinearMaxValue, ksRGB8ScaleAfterExp, ksRGBExponent, ksRGB8ReduceAfterEx);
}
/// <summary> Construct the lut</summary>
/// <param name="wShadowCutoff">size of shadow region
/// </param>
/// <param name="dfShadowSlope">shadow region parameter
/// </param>
/// <param name="ksRGBLinearMaxValue">size of lut
/// </param>
/// <param name="ksRGB8ScaleAfterExp">post shadow region parameter
/// </param>
/// <param name="ksRGBExponent">post shadow region parameter
/// </param>
/// <param name="ksRGB8ReduceAfterExp">post shadow region parameter
/// </param>
protected internal LookUpTable16LinearSRGBtoSRGB(int wShadowCutoff, double dfShadowSlope, int ksRGBLinearMaxValue, double ksRGB8ScaleAfterExp, double ksRGBExponent, double ksRGB8ReduceAfterExp):base(ksRGBLinearMaxValue + 1, (short) 0)
{
int i = - 1;
//UPGRADE_WARNING: Data types in Visual C# might be different. Verify the accuracy of narrowing conversions. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1042'"
double dfNormalize = 1.0 / (float) ksRGBLinearMaxValue;
// Generate the final linear-sRGB to non-linear sRGB LUT
for (i = 0; i <= wShadowCutoff; i++)
{
//UPGRADE_WARNING: Data types in Visual C# might be different. Verify the accuracy of narrowing conversions. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1042'"
lut[i] = (byte) System.Math.Floor(dfShadowSlope * (double) i + 0.5);
}
// Now calculate the rest
for (; i <= ksRGBLinearMaxValue; i++)
{
//UPGRADE_WARNING: Data types in Visual C# might be different. Verify the accuracy of narrowing conversions. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1042'"
lut[i] = (byte) System.Math.Floor(ksRGB8ScaleAfterExp * System.Math.Pow((double) i * dfNormalize, ksRGBExponent) - ksRGB8ReduceAfterExp + 0.5);
}
}
/* end class LookUpTable16LinearSRGBtoSRGB */
}
}
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