using OpenTK.Mathematics;
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namespace Yw.WinFrmUI.Hydro
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{
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/// <summary>
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/// 包围盒
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/// </summary>
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internal class BoundingBox3
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{
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/// <summary>
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///
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/// </summary>
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public BoundingBox3() { }
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/// <summary>
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///
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/// </summary>
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public BoundingBox3(Vector3 min, Vector3 max)
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{
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this.Min = min;
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this.Max = max;
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}
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/// <summary>
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///
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/// </summary>
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public BoundingBox3(List<Vector3> pts)
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{
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Vector3 min = new(float.MaxValue);
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Vector3 max = new(float.MinValue);
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foreach (var pt in pts)
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{
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min = Vector3.ComponentMin(min, pt);
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max = Vector3.ComponentMax(max, pt);
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}
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this.Min = min;
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this.Max = max;
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}
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/// <summary>
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///
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/// </summary>
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public Vector3 Min { get; set; }
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/// <summary>
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///
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/// </summary>
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public Vector3 Max { get; set; }
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/// <summary>
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/// 中心点
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/// </summary>
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public Vector3 Center => (Min + Max) / 2f;
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/// <summary>
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/// 尺寸
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/// </summary>
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public Vector3 Size => Max - Min;
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/// <summary>
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/// 是否包含
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/// </summary>
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public bool Contains(Vector3 pt)
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{
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if (pt.X > this.Max.X || pt.X < this.Min.X)
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{
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return false;
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}
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if (pt.Y > this.Max.Y || pt.Y < this.Min.Y)
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{
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return false;
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}
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if (pt.Z > this.Max.Z || pt.Z < this.Min.Z)
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{
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return false;
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}
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return true;
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}
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/// <summary>
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/// 计算
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/// </summary>
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public static BoundingBox3 Calculate(List<Vector3> pts)
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{
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if (pts == null || pts.Count < 1)
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{
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return default;
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}
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return new BoundingBox3(pts);
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}
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/// <summary>
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/// 合并
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/// </summary>
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public static BoundingBox3 Merge(BoundingBox3 a, BoundingBox3 b)
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{
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return new BoundingBox3(
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Vector3.ComponentMin(a.Min, b.Min),
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Vector3.ComponentMin(a.Max, b.Max)
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);
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}
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}
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}
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