/// <summary>
/// Return a rotated bounding box around
/// the origin in the XY plane.
/// We cannot just rotate the min and max points,
/// because the rotated max point may easily end
/// up being 'smaller' in some coordinate than the
/// min. To work around that, we extract all four
/// bounding box corners, rotate each of them and
/// determine new min and max values from those.
/// </summary>
private static BoundingBoxXYZ RotateBoundingBox(
BoundingBoxXYZ b,
Transform t)
{
double height = b.Max.Z - b.Min.Z;
// Four corners: lower left, lower right,
// upper right, upper left:
XYZ[] corners = Util.GetBottomCorners(b);
XyzComparable[] cornersTransformed
= corners.Select <XYZ, XyzComparable>(
p => new XyzComparable(t.OfPoint(p)))
.ToArray();
b.Min = cornersTransformed.Min();
b.Max = cornersTransformed.Max();
b.Max += height * XYZ.BasisZ;
return(b);
}
/// <summary>
/// 获取当前模型指定视图内的所有最外层的墙体
/// Get all the outermost walls in the
/// specified view of the current model
/// </summary>
/// <param name="doc"></param>
/// <param name="view">视图,默认是当前激活的视图
/// View, default is currently active view</param>
public static List <ElementId> GetOutermostWalls(
Document doc,
View view = null)
{
double offset = Util.MmToFoot(1000);
if (view == null)
{
view = doc.ActiveView;
}
#region Obsolete code using wall location line instad of bounding box
//获取顶点 最小x，最大y ； 最大x，最小y
#if BEFORE_USING_BOUNDING_BOX
List <Wall> wallList = new FilteredElementCollector(doc)
.OfClass(typeof(Wall))
.Cast <Wall>()
.ToList();
double maxX = -1D;
double minX = -1D;
double maxY = -1D;
double minY = -1D;
wallList.ForEach((wall) =>
{
Curve curve = (wall.Location as LocationCurve).Curve;
XYZ xyz1 = curve.GetEndPoint(0);
XYZ xyz2 = curve.GetEndPoint(1);
double _minX = Math.Min(xyz1.X, xyz2.X);
double _maxX = Math.Max(xyz1.X, xyz2.X);
double _minY = Math.Min(xyz1.Y, xyz2.Y);
double _maxY = Math.Max(xyz1.Y, xyz2.Y);
if (curve.IsCyclic)
{
Arc arc = curve as Arc;
double _radius = arc.Radius;
//粗略对x和y 加/减
_maxX += _radius;
_minX -= _radius;
_maxY += _radius;
_minY += _radius;
}
if (minX == -1)
{
minX = _minX;
}
if (maxX == -1)
{
maxX = _maxX;
}
if (maxY == -1)
{
maxY = _maxY;
}
if (minY == -1)
{
minY = _minY;
}
if (_minX < minX)
{
minX = _minX;
}
if (_maxX > maxX)
{
maxX = _maxX;
}
if (_maxY > maxY)
{
maxY = _maxY;
}
if (_minY < minY)
{
minY = _minY;
}
});
double minX = bb.Min.X - offset;
double maxX = bb.Max.X + offset;
double minY = bb.Min.Y - offset;
double maxY = bb.Max.Y + offset;
CurveArray curves = new CurveArray();
Line line1 = Line.CreateBound(new XYZ(minX, maxY, 0), new XYZ(maxX, maxY, 0));
Line line2 = Line.CreateBound(new XYZ(maxX, maxY, 0), new XYZ(maxX, minY, 0));
Line line3 = Line.CreateBound(new XYZ(maxX, minY, 0), new XYZ(minX, minY, 0));
Line line4 = Line.CreateBound(new XYZ(minX, minY, 0), new XYZ(minX, maxY, 0));
curves.Append(line1);
curves.Append(line2);
curves.Append(line3);
curves.Append(line4);
#endif // BEFORE_USING_BOUNDING_BOX
#endregion // Obsolete code using wall location line instad of bounding box
BoundingBoxXYZ bb = GetBoundingBoxAroundAllWalls(
doc, view);
XYZ voffset = offset * (XYZ.BasisX + XYZ.BasisY);
bb.Min -= voffset;
bb.Max += voffset;
XYZ[] bottom_corners = Util.GetBottomCorners(
bb, 0);
CurveArray curves = new CurveArray();
for (int i = 0; i < 4; ++i)
{
int j = i < 3 ? i + 1 : 0;
curves.Append(Line.CreateBound(
bottom_corners[i], bottom_corners[j]));
}
using (TransactionGroup group
= new TransactionGroup(doc))
{
Room newRoom = null;
group.Start("Find Outermost Walls");
using (Transaction transaction
= new Transaction(doc))
{
transaction.Start(
"Create New Room Boundary Lines");
SketchPlane sketchPlane = SketchPlane.Create(
doc, view.GenLevel.Id);
ModelCurveArray modelCaRoomBoundaryLines
= doc.Create.NewRoomBoundaryLines(
sketchPlane, curves, view);
// 创建房间的坐标点 -- Create room coordinates
double d = Util.MmToFoot(600);
UV point = new UV(bb.Min.X + d, bb.Min.Y + d);
// 根据选中点，创建房间 当前视图的楼层 doc.ActiveView.GenLevel
// Create room at selected point on the current view level
newRoom = doc.Create.NewRoom(view.GenLevel, point);
if (newRoom == null)
{
string msg = "创建房间失败。";
TaskDialog.Show("xx", msg);
transaction.RollBack();
return(null);
}
RoomTag tag = doc.Create.NewRoomTag(
new LinkElementId(newRoom.Id),
point, view.Id);
transaction.Commit();
}
//获取房间的墙体 -- Get the room walls
List <ElementId> ids
= RetrieveWallsGeneratingRoomBoundaries(
doc, newRoom);
group.RollBack(); // 撤销
return(ids);
}
}
public Result Execute(
ExternalCommandData commandData,
ref string message,
ElementSet elements)
{
UIApplication app = commandData.Application;
UIDocument uidoc = app.ActiveUIDocument;
Document doc = uidoc.Document;
Element e = Util.SelectSingleElement(
uidoc, "an element");
if (null == e)
{
message = "No element selected";
return(Result.Failed);
}
// Trying to call this property returns the
// compile time error: Property, indexer, or
// event 'BoundingBox' is not supported by
// the language; try directly calling
// accessor method 'get_BoundingBox( View )'
//BoundingBoxXYZ b = e.BoundingBox[null];
View v = null;
BoundingBoxXYZ b = e.get_BoundingBox(v);
if (null == b)
{
v = commandData.View;
b = e.get_BoundingBox(v);
}
if (null == b)
{
Util.InfoMsg(
Util.ElementDescription(e)
+ " has no bounding box.");
}
else
{
using (Transaction tx = new Transaction(doc))
{
tx.Start("Draw Model Line Bounding Box Outline");
Debug.Assert(b.Transform.IsIdentity,
"expected identity bounding box transform");
string in_view = (null == v)
? "model space"
: "view " + v.Name;
Util.InfoMsg(string.Format(
"Element bounding box of {0} in "
+ "{1} extends from {2} to {3}.",
Util.ElementDescription(e),
in_view,
Util.PointString(b.Min),
Util.PointString(b.Max)));
Creator creator = new Creator(doc);
creator.DrawPolygon(new List <XYZ>(
Util.GetBottomCorners(b)));
Transform rotation = Transform.CreateRotation(
XYZ.BasisZ, 60 * Math.PI / 180.0);
b = RotateBoundingBox(b, rotation);
Util.InfoMsg(string.Format(
"Bounding box rotated by 60 degrees "
+ "extends from {0} to {1}.",
Util.PointString(b.Min),
Util.PointString(b.Max)));
creator.DrawPolygon(new List <XYZ>(
Util.GetBottomCorners(b)));
tx.Commit();
}
}
return(Result.Succeeded);
}