namespace Yw.WpfUI.Hydro
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{
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/// <summary>
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/// 简单几何管理器
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/// </summary>
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internal class SimpleGeometryManager
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{
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//缓存
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private readonly ConcurrentDictionary<string, Geometry3D> _cache = new();
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/// <summary>
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/// 获取几何
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/// </summary>
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/// <param name="visual">构件</param>
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/// <param name="size">尺寸</param>
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/// <param name="factor">因子</param>
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/// <returns></returns>
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public Geometry3D GetGeometry(VisualL3d visual, double size, double factor)
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{
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var geometryType = visual.GetSimpleGeometryType();
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var pts = visual.GetPositions();
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var cacheKey = CreateCacheKey(geometryType, pts, size, factor);
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var geometry = _cache.GetOrAdd(cacheKey, CreateGeometry(geometryType, pts, size, factor));
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return geometry;
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}
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//创建几何
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private static Geometry3D CreateGeometry(eSimpleGeometry geometryType, List<PointL3d> pts, double size, double factor)
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{
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Geometry3D geometry = null;
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switch (geometryType)
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{
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case eSimpleGeometry.Junction:
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geometry = CreateJunctionGeometry(pts[0], size, factor);
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break;
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case eSimpleGeometry.Source:
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geometry = CreateSourceGeometry(pts[0], size, factor);
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break;
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case eSimpleGeometry.Pipe:
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geometry = CreatePipeGeometry(pts[0], pts[1], size, factor);
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break;
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case eSimpleGeometry.Pump:
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geometry = CreatePumpGeometry(pts[0], pts[1], size, factor);
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break;
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case eSimpleGeometry.Valve:
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geometry = CreateValveGeometry(pts[0], pts[1], size, factor);
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break;
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default: break;
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}
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return geometry;
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}
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//创建连接节点几何
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private static Geometry3D CreateJunctionGeometry(PointL3d pt, double radiu, double factor)
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{
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var builder = new MeshBuilder();
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builder.AddSphere(pt.ToPoint3D(), radiu * factor);
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return builder.ToMesh();
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}
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//创建水源几何
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private static Geometry3D CreateSourceGeometry(PointL3d pt, double radiu, double factor)
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{
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var x = radiu * 4d * factor;
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var y = radiu * 4d * factor;
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var z = radiu * 2d * factor;
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var builder = new MeshBuilder();
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builder.AddBox(pt.ToPoint3D(), x, y, z);
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return builder.ToMesh();
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}
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//创建管道几何
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private static Geometry3D CreatePipeGeometry(PointL3d start, PointL3d end, double diameter, double factor)
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{
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var builder = new MeshBuilder();
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builder.AddTube(
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path: new[] { start.ToPoint3D(), end.ToPoint3D() },
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diameter: diameter * factor, // 线直径(3D空间单位)
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thetaDiv: 8, // 横截面细分度
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false
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);
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return builder.ToMesh();
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}
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//创建水泵几何
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private static Geometry3D CreatePumpGeometry(PointL3d start, PointL3d end, double diameter, double factor)
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{
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var sv = start.ToVector3D();
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var ev = end.ToVector3D();
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var center = (sv + ev) * 0.5d;
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var direction = (ev - sv);
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var length = direction.Length;
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direction.Normalize();
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//水泵管道
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var builder = new MeshBuilder();
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builder.AddTube(
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path: new[] { start.ToPoint3D(), end.ToPoint3D() },
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diameter: diameter * factor, // 线直径(3D空间单位)
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thetaDiv: 8, // 横截面细分度
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false
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);
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// 水泵主体（圆柱形）
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var pumpCenter = sv + direction * (length * 0.5d);
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builder.AddCylinder(
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p1: (pumpCenter - direction * (length * 0.3d)).ToPoint3D(),
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p2: (pumpCenter + direction * (length * 0.3d)).ToPoint3D(),
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diameter: diameter * factor * 1.5d,
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thetaDiv: 16);
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double bladeWidth = diameter * factor * 2d;
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double bladeLength = length * 0.6d;
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// 创建两个交叉的叶片
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for (int i = 0; i < 2; i++)
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{
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var rotation = new RotateTransform3D(
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new AxisAngleRotation3D(direction, i * 90));
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// 叶片1
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var p1 = center + rotation.Transform(new Vector3D(-bladeLength / 2, -bladeWidth / 2, 0));
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var p2 = center + rotation.Transform(new Vector3D(bladeLength / 2, -bladeWidth / 2, 0));
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var p3 = center + rotation.Transform(new Vector3D(bladeLength / 2, bladeWidth / 2, 0));
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var p4 = center + rotation.Transform(new Vector3D(-bladeLength / 2, bladeWidth / 2, 0));
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builder.AddQuad(p1.ToPoint3D(), p2.ToPoint3D(), p3.ToPoint3D(), p4.ToPoint3D());
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}
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return builder.ToMesh();
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}
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//创建阀门几何
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private static Geometry3D CreateValveGeometry(PointL3d start, PointL3d end, double diameter, double factor)
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{
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var sv = start.ToVector3D();
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var ev = end.ToVector3D();
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var center = (sv + ev) * 0.5d;
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var direction = (ev - sv);
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var length = direction.Length;
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direction.Normalize();
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var size = diameter * factor * 2d;
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if (size > length)
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{
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size = length;
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}
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//阀门管道
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var builder = new MeshBuilder();
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builder.AddTube(
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path: new[] { start.ToPoint3D(), end.ToPoint3D() },
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diameter: diameter * factor, // 线直径(3D空间单位)
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thetaDiv: 8, // 横截面细分度
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false
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);
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builder.AddBox(center.ToPoint3D(), size, size, size);
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return builder.ToMesh();
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}
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//创建缓存键
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private static string CreateCacheKey(eSimpleGeometry geometryType, List<PointL3d> pts, double size, double factor)
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{
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var sb = new StringBuilder();
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sb.Append(geometryType);
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sb.Append('-');
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foreach (var pt in pts)
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{
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sb.Append(pt.ToString());
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sb.Append('-');
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}
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sb.Append(size);
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sb.Append('-');
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sb.Append(factor);
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return sb.ToString();
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}
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}
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}
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