Curve.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

using System.Xml.Serialization;
using DirectOutput.General.Generic;
using System.Xml;

namespace DirectOutput.General
{
    public class Curve : NamedItemBase, IXmlSerializable
    {
        public enum CurveTypeEnum
        {
            Linear,

            Linear0To224,
            Linear0To192,
            Linear0To160,
            Linear0To128,
            Linear0To96,
            Linear0To64,
            Linear0To32,
            Linear0To16,
            InvertedLinear,
            SwissLizardsLedCurve
        }

        private byte[] _Data;

        public byte[] Data
        {
            get { return _Data; }
            set
            {
                if (value.Length != 256)
                {
                    throw new Exception("The curve array must have 256 elements, but a array with {0} elements has been supplied.".Build(value.Length));
                }
                _Data = value; }
        }


        public byte MapValue(byte CurvePosition)
        {
            return _Data[CurvePosition];
        }


        public byte MapValue(int CurvePosition)
        {
            try
            {
                return _Data[CurvePosition];
            }
            catch 
            {
                throw new ArgumentException("Positon {0} does not exist for the curve.".Build(CurvePosition),"CurvePosition");
            }
        }

        public void SetCurve(CurveTypeEnum CurveType)
        {
            Data = BuildCurve(CurveType);
        }

        private byte[] BuildCurve(CurveTypeEnum CurveType)
        {
            byte[] C = new byte[256];

            switch (CurveType)
            {
                case CurveTypeEnum.SwissLizardsLedCurve:
                    C = new byte[256] { 0, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 4, 4, 4, 5, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13, 14, 14, 15, 15, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22, 23, 23, 24, 24, 25, 25, 26, 27, 28, 29, 30, 30, 31, 32, 33, 34, 35, 36, 36, 37, 38, 39, 40, 41, 42, 43, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 102, 103, 104, 105, 106, 107, 108, 109, 110, 112, 113, 114, 115, 116, 117, 119, 120, 121, 122, 123, 124, 126, 127, 128, 129, 130, 132, 133, 134, 135, 136, 138, 139, 140, 141, 142, 144, 145, 146, 147, 149, 150, 151, 152, 154, 155, 156, 158, 159, 160, 161, 162, 164, 165, 167, 168, 169, 171, 172, 173, 174, 176, 177, 178, 180, 181, 182, 184, 185, 187, 188, 189, 191, 192, 193, 195, 196, 197, 199, 200, 202, 203, 204, 206, 207, 208, 210, 211, 213, 214, 216, 217, 218, 220, 221, 223, 224, 226, 227, 228, 230, 231, 233, 234, 236, 237, 239, 240, 242, 243, 245, 246, 248, 249, 251, 252, 254, 255 };
                    break;
                case CurveTypeEnum.InvertedLinear:
                    for (int i = 0; i <= 255; i++)
                    {
                        C[i] = (byte)(255-i);
                    }
                    break;
                case CurveTypeEnum.Linear0To224:
                    for (int i = 0; i <= 255; i++)
                    {
                        C[i] = (byte)((double)224 / 255 * i).Limit(0, 255);
                    }
                    break;
                case CurveTypeEnum.Linear0To192:
                    for (int i = 0; i <= 255; i++)
                    {
                        C[i] = (byte)((double)192/255*i).Limit(0,255);
                    }
                    break;
                case CurveTypeEnum.Linear0To160:
                    for (int i = 0; i <= 255; i++)
                    {
                        C[i] = (byte)((double)160 / 255 * i).Limit(0, 255);
                    }
                    break;
                case CurveTypeEnum.Linear0To128:
                    for (int i = 0; i <= 255; i++)
                    {
                        C[i] = (byte)((double)128 / 255 * i).Limit(0, 255);
                    }
                    break;
                case CurveTypeEnum.Linear0To96:
                    for (int i = 0; i <= 255; i++)
                    {
                        C[i] = (byte)((double)96 / 255 * i).Limit(0, 255);
                    }
                    break;
                case CurveTypeEnum.Linear0To64:
                    for (int i = 0; i <= 255; i++)
                    {
                        C[i] = (byte)((double)64 / 255 * i).Limit(0, 255);
                    }
                    break;
                case CurveTypeEnum.Linear0To32:
                    for (int i = 0; i <= 255; i++)
                    {
                        C[i] = (byte)((double)32 / 255 * i).Limit(0, 255);
                    }
                    break;
                case CurveTypeEnum.Linear0To16:
                    for (int i = 0; i <= 255; i++)
                    {
                        C[i] = (byte)((double)16 / 255 * i).Limit(0, 255);
                    }
                    break;
                case CurveTypeEnum.Linear:
                default:
                    for (int i = 0; i <= 255; i++)
                    {
                        C[i] = (byte)(i);
                    }
                    break;
            }
            return C;
        }

        private CurveTypeEnum? GetCurveTypeEnum()
        {
            foreach (CurveTypeEnum FT in Enum.GetValues(typeof(CurveTypeEnum)))
            {
                byte[] C = BuildCurve(FT);
                if (C.CompareContents(Data))
                {
                    return FT;
                }
            }
            return null;
        }


        public Curve()
        {
            Data = BuildCurve(CurveTypeEnum.Linear);
        }



        public Curve(CurveTypeEnum CurveType)
        {
            Data = BuildCurve(CurveType);
        }




        #region IXmlSerializable Member

        public System.Xml.Schema.XmlSchema GetSchema()
        {
            return null;
        }

        public void ReadXml(System.Xml.XmlReader reader)
        {
            if (reader.LocalName == GetType().Name)
            {
                while (reader.Read())
                {
                    switch (reader.LocalName)
                    {
                        case "Name":

                            Name = reader.ReadString();
                            break;
                        case "Curve":

                            string XmlData = reader.ReadString();

                            CurveTypeEnum CurveType = CurveTypeEnum.Linear;

                            if (Enum.TryParse(XmlData, true, out CurveType))
                            {
                                Data = BuildCurve(CurveType);
                            }
                            else
                            {

                                string[] V = XmlData.Split(new char[] { ',' });
                                if (V.Length == 256)
                                {
                                    int Cnt = V.Count(Value => !Value.IsUInt() || Value.ToUInt() > 255);
                                    if (Cnt == 0)
                                    {
                                        for (int i = 0; i < 255; i++)
                                        {
                                            Data[i] = (byte)V[i].ToInteger();
                                        }
                                    }
                                    else
                                    {
                                        throw new Exception("{0} value(s) in the curve data for fading curve {1} are not numeric values between 0-255. Supplied data was {2}.".Build(Cnt, Name,XmlData));
                                    }
                                }
                                else
                                {
                                    if (V.Length > 1)
                                    {
                                        throw new Exception("Cant parse data for curve {0}. 256 values are required, but {1} values have been found. Supplied data was {2}.".Build(Name, V.Length,XmlData));
                                    }
                                    else
                                    {
                                        throw new Exception("Cant parse data for curve {0}. One of the values from the CurveTypeEnum or 256 values between 0-255 are expected. Supplied data was: {1}.".Build(Name,XmlData));
                                    }
                                }
                            }
                            break;
                        default:
                            break;
                    }

                }
            }
        }

        public void WriteXml(System.Xml.XmlWriter writer)
        {
            CurveTypeEnum? CT = GetCurveTypeEnum();

            //writer.WriteStartElement(GetType().ToString());
            writer.WriteStartElement("Name");
            writer.WriteString(Name);
            writer.WriteEndElement();

            writer.WriteStartElement("Curve");
            if (CT.HasValue)
            {
                writer.WriteString(CT.ToString());
            }
            else
            {
                StringBuilder S = new StringBuilder();
                for (int i = 0; i < 256; i++)
                {
                    S.AppendFormat("{0}, ", Data[i]);
                }
                writer.WriteString(S.ToString().Substring(0, S.Length - 2));

            }
            writer.WriteEndElement();
            // writer.WriteEndElement();
        }

        #endregion
    }
}