Initial commit from MyParking project

CommonUsage-MultiVehicleSync/commonusage/Geometries/AbstractGeometry.cs

@@ -0,0 +1,93 @@
+using System;
+using System.Collections.Generic;
+using System.Drawing;
+using System.Numerics;
+using System.Text;
+using static CommonUsage.Geometries.CircularArc;
+
+namespace CommonUsage.Geometries
+{
+	/// <summary>
+	/// 便于直接创建几何形状并求几何形状的切点、切线等。
+	/// </summary>
+	public abstract class AbstractGeometry
+	{
+		protected AbstractGeometry()
+		{
+			PaddingType = Padding.StartExtendEndExtend;
+			VisualizeOption = new VisualizeOption(Color.Red, Color.Gray);
+		}
+
+		public Padding PaddingType;
+
+		public abstract (Vector2 Pt, float Angle, float Bias, float Position) QueryTangentPoint(Vector2 point);
+
+		public abstract void Visualize(Action<VisDot> processDot, Action<VisLine> processLine,
+			bool visExtendedPart = false);
+
+		public VisualizeOption VisualizeOption;
+
+		/// <summary>
+		/// 查询指定位置的曲率。
+		/// </summary>
+		/// <param name="position">从起点到查询位置的距离。</param>
+		/// <returns></returns>
+		public abstract float QueryCurvature(float position);
+
+		public abstract float Length();
+	}
+
+	public class VisualizeOption
+	{
+		public VisualizeOption(Color mainColor, Color auxiliaryColor)
+		{
+			MainColor = mainColor;
+			AuxiliaryColor = auxiliaryColor;
+		}
+
+		public Color MainColor;
+		public Color AuxiliaryColor;
+		public bool DrawAuxiliary = true;
+		public bool VisualizeDirection = true;
+	}
+
+	public enum Padding
+	{
+		StartLineEndLine = 0b_0001_0001,
+		StartLineEndExtend = 0b_0001_0010,
+		StartExtendEndLine = 0b_0010_0001,
+		StartExtendEndExtend = 0b_0010_0010,
+	}
+
+	public class VisDot
+	{
+		public VisDot(Vector2 point, Color color)
+		{
+			Point = point;
+			Color = color;
+		}
+
+		public Vector2 Point;
+		public Color Color;
+	}
+
+	public class VisLine
+	{
+		public VisLine(Vector2 start, Vector2 end, bool startArrow, bool endArrow, Color color, float width = 1)
+		{
+			Start = start;
+			End = end;
+			StartArrow = startArrow;
+			EndArrow = endArrow;
+			Color = color;
+			Width = width;
+		}
+
+		public Vector2 Start;
+		public Vector2 End;
+		public bool StartArrow = false;
+		public bool EndArrow = false;
+		public Color Color;
+		public float Width;
+	}
+}