Revit中線的位置關係判斷方法
下面通過模型線的實例來記錄一下revit中線的位置關係的判斷技巧：
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;
namespace Line
{
/// <summary>
/// 判斷兩條線之間的關係
/// </summary>
[Autodesk.Revit.Attributes.Transaction(TransactionMode.Manual)]
public class Command:IExternalCommand
{
public Result Execute(ExternalCommandData data,ref string message,ElementSet elementSet)
{
UIDocument uidoc = data.Application.ActiveUIDocument;
Document doc = uidoc.Document;
Selection sel = uidoc.Selection;
//選擇第一個模型線
ModelLine line1 = doc.GetElement(sel.PickObject(ObjectType.Element, "選擇第一個模型線")) as ModelLine;
//選擇第二個模型線
ModelLine line2 = doc.GetElement(sel.PickObject(ObjectType.Element, "選擇第二個模型線")) as ModelLine;
TaskDialog.Show("title", DetectLines(line1, line2));
return Result.Succeeded;
}
public static string DetectLines(ModelLine line1,ModelLine line2)
{
string message = "";
Curve c1 = (line1.Location as LocationCurve).Curve;
Curve c2 = (line2.Location as LocationCurve).Curve;
SetComparisonResult res = c1.Intersect(c2);
if(res.Equals(SetComparisonResult.Overlap))
{
message = "只有一個交點";
}
else if(res.Equals(SetComparisonResult.Subset))
{
message = "兩條線收尾相連";
}
else if(res.Equals(SetComparisonResult.Equal))
{
message = "兩條線部分重合";
}
else if(res.Equals(SetComparisonResult.Disjoint))
{
message = "兩條線無交點";
}
else
{
message = "您並無列出此種情況";
}
return message;
}
}
}