Revit二次開發——匯出OBJ格式外掛
阿新 • • 發佈：2018-12-25
Revit二次開發——匯出OBJ格式外掛
1、OBJ格式
| 關鍵字 | 備註 |
|---|---|
| g | 組 |
| v | 頂點 |
| f | 面 |
例子：
建立 Cube.txt 新增內容：
g Cube v -1 -1 -1 v -1 1 -1 v 1 -1 -1 v 1 1 -1 v -1 -1 1 v -1 1 1 v 1 -1 1 v 1 1 1 f 1 2 3 f 2 3 4 f 5 6 7 f 6 7 8 f 1 2 5 f 2 5 6 f 3 4 7 f 4 7 8 f 2 4 6 f 4 6 8 f 1 3 5 f 3 5 7
把 Cube.txt 字尾名改成 .obj 後使用 畫圖 3D 軟體（ Win10 版的畫圖，可在 Microsoft Store 下載）即可開啟檢視模型
2、Revit匯出OBJ格式外掛
- Execute函式
using System;
using Autodesk.Revit.Attributes;
using Autodesk.Revit.DB;
using Autodesk.Revit.UI;
using System.Collections.Generic;
using ExportOBJ.Utils;
using System.Windows.Forms; - ExportOBJUtil工具類
using Autodesk.Revit.DB;
using System.Collections.Generic;
using System.Linq;
using Autodesk.Revit.ApplicationServices;
using System.IO;
namespace ExportOBJ.Utils
{
class ExportOBJUtil
{
/// <summary>
/// 獲取所有構件
/// </summary>
/// <returns></returns>
internal static IList<Element> GetElements(Document document)
{
FilteredElementCollector collector = new FilteredElementCollector(document);
collector.WhereElementIsNotElementType();
return collector.ToElements();
}
/// <summary>
/// 根據樓層分類所有構件
/// </summary>
/// <param name="elementList"></param>
/// <returns></returns>
internal static Dictionary<string, List<Element>> SortElementsByFloor(List<Element> elementList)
{
Dictionary<string, List<Element>> floorTextDict = new Dictionary<string, List<Element>>();
//遍歷所有構件
foreach (Element element in elementList)
{
//獲取當前構件所在樓層
string floorText = GetFloorText(element);
//如果返回值為null進入下一個迴圈
if (floorText == null)
{
continue;
}
else//如果floorText不為空
{
//判斷樓層字典中是否存在此樓層
if (floorTextDict.ContainsKey(floorText))
{
//如果存在則把該構件放在對應樓層
floorTextDict[floorText].Add(element);
}
else
{
//如果沒有建立新的樓層key
floorTextDict.Add(floorText, new List<Element>());
floorTextDict[floorText].Add(element);
}
}
}
return floorTextDict;
}
/// <summary>
/// 建立資料夾
/// </summary>
/// <param name="rootPath"></param>
/// <param name="fileName"></param>
internal static void CreateFolder(string rootPath, string fileName)
{
if (Directory.Exists(rootPath + "\\" + fileName))
{
return;
}
else
{
Directory.CreateDirectory(rootPath + "\\" + fileName);
}
}
/// <summary>
/// 獲取檔名
/// </summary>
/// <param name="document"></param>
/// <returns></returns>
internal static string GetFileName(Document document)
{
string fileName = "";
string path = document.PathName;
string[] pathArray = path.Split('\\');
fileName = pathArray.Last().Substring(0, pathArray.Last().Length - 4);
return fileName;
}
/// <summary>
/// 獲取構件的面
/// </summary>
/// <param name="element"></param>
/// <returns></returns>
internal static List<Face> GetFace(Element element, Application revitApp)
{
List<Face> faceList = new List<Face>();
GeometryElement geomElement = element.get_Geometry(GetGeometryOption(revitApp));
foreach (GeometryObject geomObject in geomElement)
{
if (geomObject.GetType().Equals(typeof(Solid)))
{
Solid solid = geomObject as Solid;
foreach (Face face in solid.Faces)
{
if (face.GetType().Equals(typeof(PlanarFace)))
{
faceList.Add(face);
}
else if (face.GetType().Equals(typeof(CylindricalFace)))
{
faceList.Add(face);
}
}
}
else if (geomObject.GetType().Equals(typeof(GeometryInstance)))
{
GeometryInstance geometryInstance = geomObject as GeometryInstance;
foreach (GeometryObject geometryObject in geometryInstance.GetInstanceGeometry())
{
if (geometryObject.GetType().Equals(typeof(Solid)))
{
Solid solid = geometryObject as Solid;
foreach (Face face in solid.Faces)
{
if (face.GetType().Equals(typeof(PlanarFace)))
{
faceList.Add(face);
}
else if (face.GetType().Equals(typeof(CylindricalFace)))
{
faceList.Add(face);
}
}
}
}
}
}
return faceList;
}
/// <summary>
/// 建立一個Option
/// </summary>
/// <returns></returns>
private static Options GetGeometryOption(Application app)
{
Options option = app.Create.NewGeometryOptions();
option.ComputeReferences = true; //開啟計算幾何引用
option.DetailLevel = ViewDetailLevel.Fine; //檢視詳細程度為最好
return option;
}
/// <summary>
/// 獲取構件所在的樓層
/// </summary>
/// <param name="element"></param>
/// <returns></returns>
private static string GetFloorText(Element element)
{
if (element.LookupParameter("樓層") == null)
{
return null;
}
else
{
return element.LookupParameter("樓層").AsString();
}
}
}
}
最後貼上該專案的資源地址：https://download.csdn.net/download/qq_28907595/10830329