Scenes/CoordinateScene.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Media;

namespace SciencePad.Scenes
{
    /// <summary>
    /// 坐标系原点位置
    /// </summary>
    public enum CoordinateOriginalPositions
    {
        /// <summary>
        /// 界面中间位置
        /// </summary>
        Center,

        /// <summary>
        /// 左下角
        /// </summary>
        LeftBottom,
    }

    /// <summary>
    /// 坐标系场景
    /// 画一个坐标系
    /// </summary>
    public class CoordinateScene : VisualScene
    {
        #region 常量

        private const int DefaultThinkess = 1;

        private static readonly Brush BorderBrush = new SolidColorBrush(Color.FromRgb(84, 84, 84));
        private static readonly Brush DefaultFontBrush = new SolidColorBrush(Colors.Black);

        private static readonly Pen AxisPen = new Pen(BorderBrush, DefaultThinkess);
        private static readonly Pen BorderPen = new Pen(BorderBrush, DefaultThinkess);
        private static readonly Pen DefaultGridLinePen = new Pen(new SolidColorBrush(Color.FromRgb(217, 217, 217)), DefaultThinkess);

        private static readonly Typeface DefaultTypeFace = new Typeface(SystemFonts.MessageFontFamily, FontStyles.Normal, FontWeights.Normal, FontStretches.Normal);

        private const CoordinateOriginalPositions DefaultOriginalPosition = CoordinateOriginalPositions.LeftBottom;

        private const int DefaultFontSize = 12;

        private const int DefaultUnitPerPixel = 30;

        #endregion

        #region 实例变量

        private Typeface fontFace;
        private int fontSize;
        private Brush fontBrush;
        private double pixelPerDip;
        private Pen gridLinePen;