112 lines
3.4 KiB
C#
112 lines
3.4 KiB
C#
using Autodesk.Revit.DB;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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namespace GraphicsStudy
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{
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class MeshData
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{
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#region 数据
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/// <summary>
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/// 顶点集合
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/// </summary>
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public List<XYZ> VerticeList { get; set; }
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/// <summary>
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/// 面索引集合
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/// </summary>
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public List<int> IndiceList { get; set; }
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/// <summary>
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/// 顶点法向量集合
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/// </summary>
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public List<XYZ> VerticeNormalList { get; set; }
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/// <summary>
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/// 对应材质数组编号
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/// </summary>
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public int MaterialIndex { get; set; }
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#endregion
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#region 构造函数
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public MeshData()
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{
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VerticeList = new List<XYZ>();
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IndiceList = new List<int>();
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VerticeNormalList = new List<XYZ>();
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}
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#endregion
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#region 方法
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/// <summary>
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/// 把顶点信息添加到集合中，然后返回对应的点在顶点集合中的索引
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/// </summary>
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/// <param name="meshVerticeList"></param>
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/// <returns></returns>
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public List<int> AddVertice(IList<XYZ> meshVerticeList, XYZ faceNormal)
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{
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List<int> verticelIndexList = new List<int>();
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foreach (XYZ meshVertice in meshVerticeList)
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{
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int index = VerticeList.FindIndex(x => x.DistanceTo(meshVertice) < 1.ToFeet());
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if (index == -1)
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{
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VerticeList.Add(meshVertice);
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VerticeNormalList.Add(faceNormal);
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verticelIndexList.Add(VerticeList.Count() - 1);
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}
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else
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{
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verticelIndexList.Add(index);
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//法向量相加再单位化
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if (VerticeNormalList[index].AngleTo(faceNormal) < 91.ToRad())
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{
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VerticeNormalList[index] = (faceNormal + VerticeNormalList[index]).Normalize();
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}
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}
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}
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return verticelIndexList;
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}
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public string ToJosn()
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{
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string result = null;
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result = string.Format
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(
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"\n \"vertices\":[\n{0}\n],"
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+ "\n \"indices\":[\n{1}\n],"
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+ "\n \"normals\":[\n{2}\n],"
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+ "\n \"material\":{3}",
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string.Join(",\n", VerticeList.Select<XYZ, string>(x => XYZTransform(x,false))),
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string.Join(",\n", IndiceList.Select<int, string>(x => x.ToString())),
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string.Join(",\n", VerticeNormalList.Select<XYZ, string>(x => XYZTransform(x))),
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MaterialIndex
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);
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return "\n{" + result + "\n}";
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}
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private string XYZTransform(XYZ point,bool isDirection=true)
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{
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string result = null;
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if (isDirection)
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{
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point = point.Normalize();
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result = $"{point.X.Round(0)},\n{point.Y.Round(0)},\n{point.Z.Round(0)}";
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}
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else
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{
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result = $"{point.X.ToMM().Round(0)},\n{point.Y.ToMM().Round(0)},\n{point.Z.ToMM().Round(0)}";
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}
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return result;
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}
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#endregion
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}
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}
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