netDxf/AciColor.cs

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#region netDxf, Copyright(C) 2014 Daniel Carvajal, Licensed under LGPL.

//                        netDxf library
// Copyright (C) 2014 Daniel Carvajal (haplokuon@gmail.com)
// 
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
// 
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 

#endregion

using System;
using System.Collections.Generic;
using System.Drawing;
using System.Globalization;
using System.Threading;

namespace netDxf
{
    /// <summary>
    /// Represents an ACI color (Autocad Color Index) that also supports true color.
    /// </summary>
    public class AciColor :
        ICloneable,
        IEquatable<AciColor>
    {
        #region private fields

        private static readonly Dictionary<byte, byte[]> aciColors = IndexRgb();
        private short index;
        private byte r;
        private byte g;
        private byte b;
        private bool useTrueColor;

        #endregion

        #region constants

        /// <summary>
        /// Gets the ByLayer color.
        /// </summary>
        public static AciColor ByLayer
        {
            get { return new AciColor {index = 256}; }
        }

        /// <summary>
        /// Gets the ByBlock color.