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Merge pull request 'hcx作业' (#6) from hcx/ComputerGraphics:master into master

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Reviewed-on: http://git.u-bim.net/Training/ComputerGraphics/pulls/6
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Yinmb 2021-03-08 09:29:36 +08:00
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20210129/hcx/TestCommand.cs Normal file
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Autodesk.Revit.DB;
using Autodesk.Revit.UI;
using Autodesk.Revit.Attributes;
using Autodesk.Revit.UI.Selection;
using System.IO;
using System.Windows.Forms;
using Newtonsoft.Json;
using System.Collections;
namespace WebGL
{
[Transaction(TransactionMode.Manual)]
public class TestCommand : IExternalCommand
{
public Result Execute(ExternalCommandData commandData, ref string message, ElementSet elements)
{
#region MyRegion
List<Reference> refes = null;
UIDocument uiDoc = commandData.Application.ActiveUIDocument;
Document doc = uiDoc.Document;
try
{
refes = uiDoc.Selection.PickObjects(ObjectType.Element, "选择Element").ToList();
}
catch
{
return Result.Cancelled;
}
List<MyElement> myElements = new List<MyElement>();
List<MyMaterial> myMaterials = new List<MyMaterial>();
List<MyMesh> myMeshes = new List<MyMesh>();
Transaction trans = new Transaction(doc, "1212");
trans.Start();
foreach (var refe in refes)
{
List<XYZ> points = new List<XYZ>();
Element element = doc.GetElement(refe);
Color color = new Color(0, 0, 0);
int transparent = 0;
var materialIds = element.GetMaterialIds(false).ToList();
foreach (var materialId in materialIds)
{
var material = doc.GetElement(materialId) as Material;
if (material != null)
{
transparent = material.Transparency;
color = material.Color;
}
myMaterials.Add(new MyMaterial { color = ToHexColor(color), transparent = transparent });
}
//顶点索引
List<int> indices = new List<int>();
var solids = GetSolidByElement(element, ViewDetailLevel.Fine);
foreach (var solid in solids)
{
var faces = solid.Faces;
//循环每个面
foreach (Face face in faces)
{
// 对每个面进行三角面片化
Mesh mesh = face.Triangulate();
if (mesh == null) continue;
for (int i = 0; i < mesh.NumTriangles; i++)
{
MeshTriangle triangular = mesh.get_Triangle(i);
for (int n = 0; n < 3; n++)
{
XYZ point = triangular.get_Vertex(n);
if (points.Count == 0)
{
points.Add(point);
indices.Add(points.Count - 1);
}
else
{
XYZ tempPoint = points.Where(a => a.DistanceTo(point) < 0.01).FirstOrDefault();
if (tempPoint != null)
{
int index = points.IndexOf(tempPoint);
indices.Add(index);
}
else
{
points.Add(point);
indices.Add(points.Count - 1);
}
}
}
}
}
}
//顶点坐标
List<double> listVertices = new List<double>();
foreach (var point in points)
{
listVertices.Add(point.X * 304.8);
listVertices.Add(point.Y * 304.8);
listVertices.Add(point.Z * 304.8);
}
//顶点法线
List<double> normals = new List<double>();
for (int i = 1; i <= indices.Count; i++)
{
if (i % 3 == 0)
{
XYZ point1 = points[indices[i - 3]];
XYZ point2 = points[indices[i - 2]];
XYZ point3 = points[indices[i - 1]];
//(P0 - P1) 叉乘 (P2 - P1）
var normal_1 = (point2 - point1).CrossProduct(point3 - point1).Normalize();
var normal_2 = (point1 - point2).CrossProduct(point3 - point2).Normalize();
var normal_3 = (point1 - point3).CrossProduct(point1 - point3).Normalize();
double[] normal1 = new double[3];
normal1[0] = normal_1.X;
normal1[1] = normal_1.Y;
normal1[2] = normal_1.Z;
double[] normal2 = new double[3];
normal2[0] = normal_1.X;
normal2[1] = normal_1.Y;
normal2[2] = normal_1.Z;
double[] normal3 = new double[3];
normal3[0] = normal_1.X;
normal3[1] = normal_1.Y;
normal3[2] = normal_1.Z;
//x,y,z
normals.Add(normal1[0]);
normals.Add(normal1[1]);
normals.Add(normal1[2]);
normals.Add(normal2[0]);
normals.Add(normal2[1]);
normals.Add(normal2[2]);
normals.Add(normal3[0]);
normals.Add(normal3[1]);
normals.Add(normal3[2]);
}
}
List<double> transfroms = new List<double>();
transfroms.Add(1);
transfroms.Add(0);
transfroms.Add(0);
transfroms.Add(0);
transfroms.Add(0);
transfroms.Add(1);
transfroms.Add(0);
transfroms.Add(0);
transfroms.Add(0);
transfroms.Add(0);
transfroms.Add(1);
transfroms.Add(0);
transfroms.Add(0);
transfroms.Add(0);
transfroms.Add(0);
transfroms.Add(1);
ElementInfo info = new ElementInfo
{
name = element.Name
};
myMeshes.Add(new MyMesh()
{
indices = indices,
vertices = listVertices,
material = myMaterials.Count - 1,
normals = normals
});
myElements.Add(new MyElement()
{
id = element.Id.ToString(),
mesh = myMeshes.Count - 1,
transform = transfroms,
visible = 1.0f,
info = info
});
}
trans.Commit();
SaveFileDialog dialog = new SaveFileDialog();
dialog.Filter = "json文件 (*.json)|*.json";
dialog.DefaultExt = ".json";
dialog.Title = "导出配置文件";
if (dialog.ShowDialog() == DialogResult.OK)
{
var Model = new
{
instances = myElements,
meshes = myMeshes,
materials = myMaterials
};
File.WriteAllText(dialog.FileName, JsonConvert.SerializeObject(Model, Formatting.Indented));
}
#endregion
return Result.Succeeded;
}
private string ToHexColor(Color color)
{
string R = Convert.ToString(color.Red, 16);
if (R == "0")
R = "00";
string G = Convert.ToString(color.Green, 16);
if (G == "0")
G = "00";
string B = Convert.ToString(color.Blue, 16);
if (B == "0")
B = "00";
string HexColor = "#" + R + G + B;
return HexColor;
}
private IList<Solid> GetSolidByElement(Element element, ViewDetailLevel viewDetailLevel)
{
List<Solid> lstSolid = new List<Solid>();
try
{
Options options = new Options();
options.IncludeNonVisibleObjects = false;
options.DetailLevel = viewDetailLevel;
options.ComputeReferences = true;
GeometryElement geoElement = element.get_Geometry(options);
IEnumerator enumerator = geoElement.GetEnumerator();
{
while (enumerator.MoveNext())
{
GeometryObject geoObj = enumerator.Current as GeometryObject;
if (geoObj is GeometryInstance)
{
GeometryInstance geoinstance = geoObj as GeometryInstance;
GeometryElement geoObjtmp = geoinstance.GetInstanceGeometry();
//GeometryElement geoObjtmp = geoinstance.GetSymbolGeometry();
IEnumerator enumeratorobj = geoObjtmp.GetEnumerator();
{
while (enumeratorobj.MoveNext())
{
GeometryObject obj2 = enumeratorobj.Current as GeometryObject;
if (obj2 is Solid)
{
lstSolid.Add(obj2 as Solid);
}
}
}
}
else if (geoObj is Solid)
{
lstSolid.Add(geoObj as Solid);
}
}
}
}
catch
{
//throw;
}
return lstSolid;
}
}
public class MyElement
{
public string id { get; set; }
public List<double> transform { get; set; }
public float visible { get; set; }
public int mesh { get; set; }
public ElementInfo info { get; set; }
}
public class ElementInfo
{
public string name { get; set; }
}
public class MyMesh
{
public List<double> vertices { get; set; }
public List<double> normals { get; set; }
public List<int> indices { get; set; }
public int material { get; set; }
}
public class MyMaterial
{
public string color { get; set; }
public int transparent { get; set; }
}
}

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20210129/hcx/bimData.json Normal file
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