Backup/CRD.WinUI/HSLFilter.cs

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using System;
using System.Collections.Generic;

using System.Text;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;
using System.Runtime.InteropServices;
using System.Windows.Forms;

namespace CRD.WinUI
{

    public interface IFilter
    {
        Image ExecuteFilter(Image inputImage);
    }

    public abstract class BasicFilter : IFilter
    {
        private Color _bgColor = Color.FromArgb(0, 0, 0, 0);
        private InterpolationMode _interpolation = InterpolationMode.HighQualityBicubic;

        public abstract Image ExecuteFilter(Image img);

        public Color BackgroundColor
        {
            get
            {
                return this._bgColor;
            }
            set
            {
                this._bgColor = value;
            }
        }

        public InterpolationMode Interpolation
        {
            get
            {
                return this._interpolation;
            }
            set
            {
                this._interpolation = value;
            }
        }
    }

    public class HSLFilter : BasicFilter
    {
        private double _hue = 0.0;
        private double _lightness = 0.0;
        private double _saturation = 0.0;//5|1|a|s|p|x

        public override Image ExecuteFilter(Image img)
        {
            if (img == null) return null;