/// <summary>
/// Return polygon loops representing the size
/// and location of given sheet and all the
/// viewports it contains, regardless of type.
/// </summary>
static JtLoops GetSheetViewportLoops(
SheetModelCollections modelCollections,
ViewSheet sheet)
{
Document doc = sheet.Document;
List <Viewport> viewports = sheet
.GetAllViewports()
.Select <ElementId, Viewport>(
id => doc.GetElement(id) as Viewport)
.ToList <Viewport>();
int n = viewports.Count;
modelCollections.ViewsInSheet[sheet.Id]
= new List <ViewData>(n);
JtLoops sheetViewportLoops = new JtLoops(n + 1);
// sheet.get_BoundingBox( null ) returns (-100,-100),(100,100)
BoundingBoxUV bb = sheet.Outline; // model coordinates (0,0), (2.76,1.95)
JtBoundingBox2dInt ibb = new JtBoundingBox2dInt(); // millimeters (0,0),(840,...)
ibb.ExpandToContain(new Point2dInt(bb.Min));
ibb.ExpandToContain(new Point2dInt(bb.Max));
JtLoop loop = new JtLoop(ibb.Corners);
sheetViewportLoops.Add(loop);
foreach (Viewport vp in viewports)
{
XYZ center = vp.GetBoxCenter(); // not used
Outline outline = vp.GetBoxOutline();
ibb.Init();
ibb.ExpandToContain(
new Point2dInt(outline.MinimumPoint));
ibb.ExpandToContain(
new Point2dInt(outline.MaximumPoint));
loop = new JtLoop(ibb.Corners);
sheetViewportLoops.Add(loop);
ViewData d = new ViewData();
d.Id = vp.ViewId;
d.ViewportBoundingBox = loop.BoundingBox;
modelCollections.ViewsInSheet[sheet.Id].Add(
d);
}
return(sheetViewportLoops);
}
/// <summary>
/// Retrieve the room plan view boundary
/// polygon loops and convert to 2D integer-based.
/// For optimisation and consistency reasons,
/// convert all coordinates to integer values in
/// millimetres. Revit precision is limited to
/// 1/16 of an inch, which is abaut 1.2 mm, anyway.
/// </summary>
static JtLoops GetRoomLoops(Room room)
{
SpatialElementBoundaryOptions opt
= new SpatialElementBoundaryOptions();
opt.SpatialElementBoundaryLocation =
SpatialElementBoundaryLocation.Center; // loops closed
//SpatialElementBoundaryLocation.Finish; // loops not closed
IList <IList <BoundarySegment> > loops = room.
GetBoundarySegments(opt);
int nLoops = loops.Count;
JtLoops jtloops = new JtLoops(nLoops);
foreach (IList <BoundarySegment> loop in loops)
{
int nSegments = loop.Count;
JtLoop jtloop = new JtLoop(nSegments);
XYZ p0 = null; // loop start point
XYZ p; // segment start point
XYZ q = null; // segment end point
foreach (BoundarySegment seg in loop)
{
// Todo: handle non-linear curve.
// Especially: if two long lines have a
// short arc in between them, skip the arc
// and extend both lines.
p = seg.Curve.GetEndPoint(0);
jtloop.Add(new Point2dInt(p));
Debug.Assert(null == q || q.IsAlmostEqualTo(p),
"expected last endpoint to equal current start point");
q = seg.Curve.GetEndPoint(1);
if (_debug_output)
{
Debug.Print("{0} --> {1}",
Util.PointString(p),
Util.PointString(q));
}
if (null == p0)
{
p0 = p; // save loop start point
}
}
Debug.Assert(q.IsAlmostEqualTo(p0),
"expected last endpoint to equal loop start point");
jtloops.Add(jtloop);
}
return(jtloops);
}
/// <summary>
/// Add all plan view boundary loops from
/// given solid to the list of loops.
/// The creation application argument is used to
/// reverse the extrusion analyser output curves
/// in case they are badly oriented.
/// </summary>
/// <returns>Number of loops added</returns>
static int AddLoops(
Autodesk.Revit.Creation.Application creapp,
JtLoops loops,
GeometryObject obj,
ref int nExtrusionAnalysisFailures)
{
int nAdded = 0;
Solid solid = obj as Solid;
if (null != solid &&
0 < solid.Faces.Size)
{
//Plane plane = new Plane(XYZ.BasisX,
// XYZ.BasisY, XYZ.Zero); // 2016
Plane plane = Plane.CreateByOriginAndBasis(
XYZ.Zero, XYZ.BasisX, XYZ.BasisY); // 2017
ExtrusionAnalyzer extrusionAnalyzer = null;
try
{
extrusionAnalyzer = ExtrusionAnalyzer.Create(
solid, plane, XYZ.BasisZ);
}
catch (Autodesk.Revit.Exceptions
.InvalidOperationException)
{
++nExtrusionAnalysisFailures;
return(nAdded);
}
Face face = extrusionAnalyzer
.GetExtrusionBase();
loops.Add(GetLoop(creapp, face));
++nAdded;
}
return(nAdded);
}
/// <summary>
/// Retrieve all plan view boundary loops from
/// all solids of given element united together.
/// If the element is a family instance, transform
/// its loops from the instance placement
/// coordinate system back to the symbol
/// definition one.
/// If no geometry can be determined, use the
/// bounding box instead.
/// </summary>
static JtLoops GetPlanViewBoundaryLoops(
Element e,
ref int nFailures)
{
Autodesk.Revit.Creation.Application creapp
= e.Document.Application.Create;
JtLoops loops = null;
Options opt = new Options();
GeometryElement geo = e.get_Geometry(opt);
if (null != geo)
{
Document doc = e.Document;
if (e is FamilyInstance)
{
// Retrieve family instance geometry
// transformed back to symbol definition
// coordinate space by inverting the
// family instance placement transformation
LocationPoint lp = e.Location
as LocationPoint;
Transform t = Transform.CreateTranslation(
-lp.Point);
Transform r = Transform.CreateRotationAtPoint(
XYZ.BasisZ, -lp.Rotation, lp.Point);
geo = geo.GetTransformed(t * r);
}
loops = GetPlanViewBoundaryLoopsGeo(
creapp, geo, ref nFailures);
}
if (null == loops || 0 == loops.Count)
{
Debug.Print(
"Unable to determine geometry for "
+ Util.ElementDescription(e)
+ "; using bounding box instead.");
BoundingBoxXYZ bb;
if (e is FamilyInstance)
{
bb = (e as FamilyInstance).Symbol
.get_BoundingBox(null);
}
else
{
bb = e.get_BoundingBox(null);
}
JtLoop loop = new JtLoop(4);
loop.Add(new Point2dInt(bb.Min));
loop.Add(new Point2dInt(bb.Max.X, bb.Min.Y));
loop.Add(new Point2dInt(bb.Max));
loop.Add(new Point2dInt(bb.Min.X, bb.Max.Y));
loops.Add(loop);
}
return(loops);
}