几何实体的创建方法之一:
构成封闭底面,指定拉伸方向与拉伸高度。GeometryCreationUtilities
//自创几何实体相交法
[TransactionAttribute(Autodesk.Revit.Attributes.TransactionMode.Manual)]
public class FindIntersectWallsByGeometry : IExternalCommand
{
public Result Execute(ExternalCommandData
commandData,
ref string messages, ElementSet elements)
{
UIApplication app = commandData.Application;
Document doc = app.ActiveUIDocument.Document;
Transaction trans =
new Transaction(doc,
"ExComm");
trans.Start();
//pick a point to draw solid在屏幕上选择一点,找到附近的墙。
Selection sel = app.ActiveUIDocument.Selection;
XYZ pt = sel.PickPoint(
"Please pick a point to get the close walls");
//XYZ pttemp1 = sel.PickPoint(Autodesk.Revit.UI.Selection.ObjectSnapTypes.None, "Pick leader end...");
//XYZ pttemp2 = sel.PickPoint(Autodesk.Revit.UI.Selection.ObjectSnapTypes.None, "Pick leader elbow...");
//
double dBoxLength =
3;
//Z值不变,以选择的点为中心,找到矩形四个点。
XYZ pt1 =
new XYZ(pt.X - dBoxLength /
2, pt.Y - dBoxLength /
2, pt.Z);
XYZ pt2 =
new XYZ(pt.X + dBoxLength /
2, pt.Y - dBoxLength /
2, pt.Z);
XYZ pt3 =
new XYZ(pt.X + dBoxLength /
2, pt.Y + dBoxLength /
2, pt.Z);
XYZ pt4 =
new XYZ(pt.X - dBoxLength /
2, pt.Y + dBoxLength /
2, pt.Z);
//创建四条线。
Line lineBottom = app.Application.Create.NewLineBound(pt1, pt2);
Line lineRight = app.Application.Create.NewLineBound(pt2, pt3);
Line lineTop = app.Application.Create.NewLineBound(pt3, pt4);
Line lineLeft = app.Application.Create.NewLineBound(pt4, pt1);
//封闭曲线
CurveLoop profile =
new CurveLoop();
profile.Append(lineBottom);
profile.Append(lineRight);
profile.Append(lineTop);
profile.Append(lineLeft);
List<CurveLoop> loops =
new List<CurveLoop>();
loops.Add(profile);
//创建实体的方法(底面,拉伸方向,拉伸高度)
XYZ vector =
new XYZ(
0,
0,
1);
Solid solid = GeometryCreationUtilities.CreateExtrusionGeometry(loops, vector,
10);
//相交过滤器
FilteredElementCollector collector =
new FilteredElementCollector(doc);
ElementIntersectsSolidFilter solidFilter =
new ElementIntersectsSolidFilter(solid);
collector.WherePasses(solidFilter);
sel.Elements.Clear();
//Add these interseting element to the selection
foreach (Element elem
in collector)
{
sel.Elements.Add(elem);
}
trans.Commit();
return Result.Succeeded;
}
}url:http://greatverve.cnb
logs.com/p/GeometryCreationUtilities.html