public Result Execute(
ExternalCommandData commandData,
ref string message,
ElementSet elements)
{
UIApplication app = commandData.Application;
UIDocument uidoc = app.ActiveUIDocument;
Document doc = uidoc.Document;
List<Element> walls = new List<Element>();
if( !Util.GetSelectedElementsOrAll(
walls, uidoc, typeof( Wall ) ) )
{
Selection sel = uidoc.Selection;
message = ( 0 < sel.GetElementIds().Count )
? "Please select some wall elements."
: "No wall elements found.";
return Result.Failed;
}
Options opt = app.Application.Create.NewGeometryOptions();
List<List<XYZ>> polygons
= CmdWallProfile.GetWallProfilePolygons(
walls, opt );
int i = 0, n = polygons.Count;
double[] areas = new double[n];
double d, a, maxArea = 0.0;
XYZ normal;
foreach( List<XYZ> polygon in polygons )
{
GetPolygonPlane( polygon,
out normal, out d, out a );
if( Math.Abs( maxArea ) < Math.Abs( a ) )
{
maxArea = a;
}
areas[i++] = a;
#if DEBUG
// transform the 3D polygon into a horizontal plane
// so we can use the 2D GetSignedPolygonArea() and
// compare its results with the 3D calculation.
// todo: compare the relative speed of
// transforming 3d to 2d and using 2d area
// calculation versus direct 3d area calculation.
Transform t = GetTransformToZ( normal );
List<XYZ> polygonHorizontal
= ApplyTransform( polygon, t );
List<UV> polygon2d
= CmdSlabBoundaryArea.Flatten(
polygonHorizontal );
double a2
= CmdSlabBoundaryArea.GetSignedPolygonArea(
polygon2d );
Debug.Assert( Util.IsEqual( a, a2 ),
"expected same area from 2D and 3D calculations" );
#endif
}
Debug.Print(
"{0} boundary loop{1} found.",
n, Util.PluralSuffix( n ) );
for( i = 0; i < n; ++i )
{
Debug.Print(
" Loop {0} area is {1} square feet{2}",
i,
Util.RealString( areas[i] ),
( areas[i].Equals( maxArea )
? ", outer loop of largest wall"
: "" ) );
}
Creator creator = new Creator( doc );
using( Transaction tx = new Transaction( doc ) )
{
tx.Start( "Draw wall profile loops" );
creator.DrawPolygons( polygons );
tx.Commit();
}
return Result.Succeeded;
}
