source: branches/HeuristicLab.Problems.GrammaticalOptimization/SharpVectorModel/Paths/SvgPathSeg.cs @ 12803

using System;

namespace SharpVectors.Dom.Svg
{
  public abstract class SvgPathSeg : ISvgPathSeg
    {
        #region Private Fields

        private int _index;
        private SvgPathSegList _list;
        private SvgPathSegType _type;

        #endregion

        #region Constructors

        protected SvgPathSeg(SvgPathSegType type)
    {
      this._type = type;
    }

    #endregion

        #region Public Properties

        public abstract string PathText { get; }
        public abstract SvgPointF AbsXY { get; }
        public abstract double StartAngle { get; }
        public abstract double EndAngle { get; }

        public SvgPathSeg PreviousSeg
        {
            get
            {
                return _list.GetPreviousSegment(this);
            }
        }

        public SvgPathSeg NextSeg
        {
            get
            {
                return _list.GetNextSegment(this);
            }
        }

        public int Index
        {
            get
            {
                return _index;
            }
        }

        public virtual double Length
        {
            get
            {
                return 0;
            }
        }

        #endregion

        #region Internal Methods

        internal void SetList(SvgPathSegList list)
    {
            this._list = list;
    }

    internal void SetIndex(int index)
    {
      this._index = index;
    }

    internal void SetIndexWithDiff(int diff)
    {
      this._index += diff;
        }

        #endregion

        #region ISvgPathSeg Members

        public SvgPathSegType PathSegType
    {
      get 
            {
                return _type;
            }
    }

    public string PathSegTypeAsLetter 
    {
      get
      {
        switch(_type)
        {
          case SvgPathSegType.ArcAbs:
            return "A";
          case SvgPathSegType.ArcRel:
            return "a";
          case SvgPathSegType.ClosePath:
            return "z";
          case SvgPathSegType.CurveToCubicAbs:
            return "C";
          case SvgPathSegType.CurveToCubicRel:
            return "c";
          case SvgPathSegType.CurveToCubicSmoothAbs:
            return "S";
          case SvgPathSegType.CurveToCubicSmoothRel:
            return "s";
          case SvgPathSegType.CurveToQuadraticAbs:
            return "Q";
          case SvgPathSegType.CurveToQuadraticRel:
            return "q";
          case SvgPathSegType.CurveToQuadraticSmoothAbs:
            return "T";
          case SvgPathSegType.CurveToQuadraticSmoothRel:
            return "t";
          case SvgPathSegType.LineToAbs:
            return "L";
          case SvgPathSegType.LineToHorizontalAbs:
            return "H";
          case SvgPathSegType.LineToHorizontalRel:
            return "h";
          case SvgPathSegType.LineToRel:
            return "l";
          case SvgPathSegType.LineToVerticalAbs:
            return "V";
          case SvgPathSegType.LineToVerticalRel:
            return "v";
          case SvgPathSegType.MoveToAbs:
            return "M";
          case SvgPathSegType.MoveToRel:
            return "m";
          default:
            return String.Empty;
        }
      }
    }

    #endregion
  }
}