58 lines
1.6 KiB
C#
58 lines
1.6 KiB
C#
using StgSharp.Math;
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using System.Numerics;
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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 sealed override Point RefPoint0 => center;
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public sealed override Point RefPoint1 => new Point(vertexMat.transpose.colum0);
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public sealed override Point RefPoint2 => new Point(vertexMat.transpose.colum1);
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public Rectangle(
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float v0x, float v0y, float v0z,
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float v1x, float v1y, float v1z,
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float v2x, float v2y, float v2z,
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float v3x, float v3y, float v3z
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)
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{
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vertexMat.mat.colum0 = new Vector4(v0x, v0y, v0z, 0);
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vertexMat.mat.colum1 = new Vector4(v1x, v1y, v1z, 0);
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vertexMat.mat.colum2 = new Vector4(v2x, v2y, v2z, 0);
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vertexMat.mat.colum3 = new Vector4(v3x, v3y, v3z, 0);
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}
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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 MoveVertex2(uint tick)
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{
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return
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new Vec3d(this.center.position.vec * 2 - vertexMat.mat.colum0);
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}
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public sealed override Vec3d MoveVertex3(uint tick)
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{
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return
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new Vec3d(this.center.position.vec * 2 - vertexMat.mat.colum1);
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}
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internal sealed override 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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