43 lines
1.2 KiB
C#
43 lines
1.2 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Drawing;
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using System.Linq;
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using System.Text;
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namespace Io.Github.Kerwinxu.LibShapes.Core
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{
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/// <summary>
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/// 选择策略，主要是两种，
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/// </summary>
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public class SelectStrategy
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{
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/// <summary>
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/// 靠近在这个范围内就算选择了。
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/// </summary>
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private static float tolerance = 0.5f;
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/// <summary>
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/// 两个点是否距离足够近
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/// </summary>
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/// <param name="p1"></param>
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/// <param name="p2"></param>
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/// <returns></returns>
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public static bool isNear(PointF p1, PointF p2)
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{
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return Utils.DistanceCalculation.distance(p1, p2) <= tolerance;
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}
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/// <summary>
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/// 一个点跟一个线段是否靠的非常近。
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/// </summary>
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/// <param name="p0"></param>
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/// <param name="p1"></param>
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/// <param name="p2"></param>
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/// <returns></returns>
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public static bool isNear(PointF p0, PointF p1, PointF p2)
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{
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return Utils.DistanceCalculation.pointToLine(p0, p1, p2) <= tolerance;
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}
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}
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}
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