/// <summary>
/// 获得element的BoundingBoxXYZ
/// </summary>
/// <param name="element"></param>
/// <returns></returns>
public static BoundingBoxXYZ GetBoundingBox(this Element element)
{
if (null == element)
{
return(null);
}
// 获取实例的BoundingBox
if (element is FamilyInstance)
{
var bBox = new BoundingBoxXYZ()
{
Enabled = false
};
var solids = GeometryUtils.GetSolids(element);
foreach (var solid in solids)
{
if (solid.Faces.Size <= 0 || solid.Volume <= 1e-6)
{
continue;
}
foreach (Edge e in solid.Edges)
{
var crv = e.AsCurve();
bBox.ExpandToContain(crv.GetEndPoint(0));
bBox.ExpandToContain(crv.GetEndPoint(1));
}
}
return(bBox);
}
// 获取一般的BoundingBox
Options ops = new Options()
{
ComputeReferences = true,
DetailLevel = ViewDetailLevel.Fine
};
GeometryElement geoElem = element.get_Geometry(ops);
return(geoElem?.GetBoundingBox());
}
/// <summary>
/// 获得能包围所有包围盒的BoundingBox
/// </summary>
/// <param name="bBoxs"></param>
/// <returns></returns>
public static BoundingBoxXYZ GetElementsMaxBounding(List <BoundingBoxXYZ> bBoxs)
{
BoundingBoxXYZ retBBox = new BoundingBoxXYZ()
{
Enabled = false
};
bBoxs.ForEach(bbox => retBBox.ExpandToContain(bbox));
return(retBBox);
}
/// <summary>
/// Return a bounding box around all the
/// walls in the entire model; for just a
/// building, or several buildings, this is
/// obviously equal to the model extents.
/// </summary>
static BoundingBoxXYZ GetBoundingBoxAroundAllWalls(
Document doc,
View view = null)
{
// Default constructor creates cube from -100 to 100;
// maybe too big, but who cares?
BoundingBoxXYZ bb = new BoundingBoxXYZ();
FilteredElementCollector walls
= new FilteredElementCollector(doc)
.OfClass(typeof(Wall));
foreach (Wall wall in walls)
{
bb.ExpandToContain(
wall.get_BoundingBox(
view));
}
return(bb);
}
/// <summary>
/// Return bounding box calculated from the room
/// boundary segments. The lower left corner turns
/// out to be identical with the one returned by
/// the standard room bounding box.
/// </summary>
static BoundingBoxXYZ GetBoundingBox(
IList <IList <BoundarySegment> > boundary)
{
BoundingBoxXYZ bb = new BoundingBoxXYZ();
bb.Clear();
foreach (IList <BoundarySegment> loop in boundary)
{
foreach (BoundarySegment seg in loop)
{
Curve c = seg.GetCurve();
IList <XYZ> pts = c.Tessellate();
foreach (XYZ p in pts)
{
bb.ExpandToContain(p);
}
}
}
return(bb);
}
public static BoundingBoxXYZ GetBoundingBox(IList <IList <BoundarySegment> > boundary)
{
BoundingBoxXYZ bb = new BoundingBoxXYZ();
double infinity = double.MaxValue;
bb.Min = new XYZ(infinity, infinity, infinity);
bb.Max = -bb.Min;
foreach (IList <BoundarySegment> loop in boundary)
{
foreach (BoundarySegment seg in loop)
{
Curve c = seg.GetCurve();
IList <XYZ> pts = c.Tessellate();
foreach (XYZ p in pts)
{
bb.ExpandToContain(p);
}
}
}
return(bb);
}
/// <summary>
/// Expand the given bounding box to include
/// and contain the given other one.
/// </summary>
public static void ExpandToContain(this BoundingBoxXYZ bb, BoundingBoxXYZ other)
{
bb.ExpandToContain(other.Min);
bb.ExpandToContain(other.Max);
}
/// <summary>
/// Return bounding box calculated from the room
/// boundary segments. The lower left corner turns
/// out to be identical with the one returned by
/// the standard room bounding box.
/// </summary>
static BoundingBoxXYZ GetBoundingBox(
IList<IList<BoundarySegment>> boundary)
{
BoundingBoxXYZ bb = new BoundingBoxXYZ();
double infinity = double.MaxValue;
bb.Min = new XYZ( infinity, infinity, infinity );
bb.Max = -bb.Min;
foreach( IList<BoundarySegment> loop in boundary )
{
foreach( BoundarySegment seg in loop )
{
Curve c = seg.GetCurve();
IList<XYZ> pts = c.Tessellate();
foreach( XYZ p in pts )
{
bb.ExpandToContain( p );
}
}
}
return bb;
}
