46 lines
1.1 KiB
C#
46 lines
1.1 KiB
C#
using StgSharp.Control;
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using StgSharp.Math;
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using System;
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using System.Collections.Generic;
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using System.Text;
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namespace StgSharp.Geometries
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{
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public class Rectangle : Polygon4
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{
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internal Point center;
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public override sealed Point RefPoint01=>center;
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public override sealed Point RefPoint02 => vertex01;
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public override sealed Point RefPoint03 => vertex02;
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/// <summary>
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/// 计算中心点相对于参考原点的位移
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/// </summary>
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/// <param name="tick">当前游戏刻</param>
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/// <returns></returns>
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public virtual vec3d MovCenter(uint tick) => default(vec3d);
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public sealed override vec3d MovVertex03(uint tick)
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{
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return this.center.Position * 2 - this.vertex01.Position;
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}
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public sealed override vec3d MovVertex04(uint tick)
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{
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return this.center.Position * 2 - this.vertex02.Position;
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}
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internal override sealed void OnRender(uint tick)
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{
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tick-=bornTick;
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this.MovCenter(tick);
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}
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}
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}
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