加载中…Revit二次开发之Selection的应用（2）
(2016-09-28 09:27:43)
标签：
365it |
分类： Revit二次开发 |
接上一篇博文，我们介绍了一下Selection应用类下的几个拾取构架的方法，那么接下来我们介绍一下PickedBox
[Autodesk.Revit.Attributes.TransactionAttribute(Autodesk.Revit.Attributes.TransactionMode.Manual)]
public class Class1 :
IExternalCommand
{
public Result Execute(ExternalCommandData
commandData, ref string message, ElementSet elements)
{
try
{
UIDocument uidoc =
commandData.Application.ActiveUIDocument;
Document doc =
uidoc.Document;
Selection selection =
uidoc.Selection;
Autodesk.Revit.DB.View view =
uidoc.ActiveView;
if (view is
Autodesk.Revit.DB.ViewPlan)
{
}
else
{
TaskDialog.Show("BIM", "请在平面视图中进行操作");
return Result.Cancelled;
}
ElementId eid = new
ElementId(-1);
IList elems = new
FilteredElementCollector(doc).OfClass(typeof(ViewFamilyType)).ToElements();
foreach (Element e in
elems)
{
ViewFamilyType v = e as ViewFamilyType;
if (v != null && v.ViewFamily ==
ViewFamily.ThreeDimensional)
{
eid =
e.Id;
break;
}
}
BoundingBoxXYZ buBoxXYZ = new
BoundingBoxXYZ();
double min_x = 0; double
min_y = 0; double max_x = 0; double max_y = 0;
try
{
PickedBox pickedbox =
uidoc.Selection.PickBox(PickBoxStyle.Crossing,
"请选择要生成局部三维的平面区域");
min_x = BackMin(pickedbox.Min.X,
pickedbox.Max.X);
min_y = BackMin(pickedbox.Min.Y,
pickedbox.Max.Y);
max_x = BackMax(pickedbox.Min.X,
pickedbox.Max.X);
max_y = BackMax(pickedbox.Min.Y,
pickedbox.Max.Y);
}
catch
{
return Result.Cancelled;
}
Transaction ts = new
Transaction(doc, "局部三维");
ts.Start();
try
{
View3D view3D = View3D.CreateIsometric(doc,
eid);
view3D.IsSectionBoxActive = true;
view3D.GetSectionBox().Enabled = true;
view3D.CropBoxActive = false;//裁剪视图。
view3D.CropBoxVisible = false;//裁剪视图可见性。
double max_z = 0;
double min_z = 0;
TopClipPlan(doc, view, ref max_z);//顶部剪切高度
BottomCLipPlan(doc, view, ref min_z);
XYZ xyz1 = new XYZ(min_x, min_y, min_z);
XYZ xyz2 = new XYZ(max_x, max_y, max_z);
buBoxXYZ.set_Bounds(0, xyz1);//设置剖面框min
buBoxXYZ.set_Bounds(1, xyz2);//设置剖面框max
view3D.SetSectionBox(buBoxXYZ);
try
{
view3D.DisplayStyle = DisplayStyle.Shading;
view3D.DetailLevel = ViewDetailLevel.Medium;
}
catch
{
}
ts.Commit();
uidoc.ActiveView =
view3D;
}
catch { ts.Commit(); return
Result.Cancelled; }
return
Result.Succeeded;
}
catch
{
return
Result.Cancelled;
}
}
//返回最小值
private Double BackMin(Double a, Double b)
{
if (a >
b)
{
return b;
}
else
{
return a;
}
}
//返回最大值
private Double BackMax(Double a, Double b)
{
if (a >
b)
{
return a;
}
else
{
return b;
}
}
private void TopClipPlan(Document doc,
Autodesk.Revit.DB.View view, ref double max_z)//顶部偏移
{
try
{
if (view is ViewPlan)
{
ViewPlan viewplan = view as ViewPlan;
PlanViewRange viewRange =
viewplan.GetViewRange();
ElementId topclipPlane =
viewRange.GetLevelId(PlanViewPlane.TopClipPlane);
double doffset =
viewRange.GetOffset(PlanViewPlane.TopClipPlane);
if (topclipPlane.IntegerValue > 0)
{
Level
levelabove = doc.GetElement(topclipPlane) as Level;
double
level = levelabove.ProjectElevation;
max_z =
level + doffset;
}
else
{
max_z =
1500;
}
}
}
catch {
}
}
private void BottomCLipPlan(Document doc,
Autodesk.Revit.DB.View view, ref double min_z)//底部偏移
{
try
{
if (view is ViewPlan)
{
ViewPlan viewplan = view as ViewPlan;
PlanViewRange viewRange =
viewplan.GetViewRange();
ElementId bottomclipPlane =
viewRange.GetLevelId(PlanViewPlane.BottomClipPlane);
double Boffset =
viewRange.GetOffset(PlanViewPlane.BottomClipPlane);
if (bottomclipPlane.IntegerValue > 0)
{
Level
levelBottom = doc.GetElement(bottomclipPlane) as Level;
double
level = levelBottom.ProjectElevation;
min_z =
level + Boffset;
}
else
{
min_z =
-1500;
}
}
}
catch {
}
}
}
该方法指定框取一个矩形范围，我们可以利用它的这个特性来做一个局部三维的工具
using Autodesk.Revit.UI;
using Autodesk.Revit.DB;
using Autodesk.Revit.UI.Selection;
using System.Runtime.InteropServices;
using System.Windows.Forms;
namespace jubusanwei
{
}
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