52 lines
1.9 KiB
C#
52 lines
1.9 KiB
C#
using StgSharp.Control;
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using StgSharp.Math;
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namespace StgSharp.Geometries
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{
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internal class Parallelogram : Polygon4
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{
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internal Point center;
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public sealed override Point RefPoint01 => center;
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public sealed override Point RefPoint02 => vertex01;
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public sealed override Point RefPoint03 => vertex02;
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internal readonly GetLocationHandler movCenterOperation = new GetLocationHandler(GeometryOperation.DefualtMotion);
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public GetLocationHandler MovCenterOperation { get { return movCenterOperation; } }
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public GetLocationHandler MovVertex01Operation { get { return movVertex01Operation; } }
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public GetLocationHandler MovVertex02Operation { get { return movVertex02Operation; } }
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public virtual Vec3d MovCenter(uint tick)
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{
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return movCenterOperation.Invoke(tick);
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}
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/// <summary>
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/// 移动平行四边形的第三个顶点，是一个多余的方法，调用会引发多余变量异常
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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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/// <exception cref="UnusedVertexException">几何体过定义</exception>
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public sealed override Vec3d MovVertex03(uint tick)
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{
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throw new UnusedVertexException();
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}
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public sealed override Vec3d MovVertex04(uint tick)
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{
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throw new UnusedVertexException();
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}
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internal sealed override void OnRender(uint tick)
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{
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uint nowTick = TimeLine.tickCounter._value;
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this.vertex01.Position = RefOrigin.Position + movVertex01Operation(nowTick);
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this.vertex02.Position = RefOrigin.Position + movVertex02Operation(nowTick);
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this.vertex03.Position = center.Position * 2 - vertex01.Position;
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this.vertex04.Position = center.Position * 2 - vertex02.Position;
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}
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}
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}
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