public void ExtractSpaceBoundries(IfcSpace space)
{
foreach (var bound in space.BoundedBy)
{
var spaceBound = new SpaceBoundry();
spaceBound.IsPhysical = bound.PhysicalOrVirtualBoundary == IfcPhysicalOrVirtualEnum.PHYSICAL;
spaceBound.IsExternal = bound.InternalOrExternalBoundary == IfcInternalOrExternalEnum.EXTERNAL;
if (bound.RelatedBuildingElement == null)
{
continue;
}
var buildingElement = bound.RelatedBuildingElement;
var boundLabel = $"{buildingElement.Name} - {buildingElement.Description} - {buildingElement.GlobalId}";
var geometry = bound.ConnectionGeometry as IfcConnectionSurfaceGeometry;
IfcSurfaceOrFaceSurface surface = geometry.SurfaceOnRelatingElement as IfcSurfaceOrFaceSurface;
if (surface is IfcSurfaceOfLinearExtrusion)
{
}
else if (surface is IfcCurveBoundedPlane)
{
var curvedBoundedSurface = surface as IfcCurveBoundedPlane;
var boundShape = curvedBoundedSurface.OuterBoundary as Xbim.Ifc2x3.GeometryResource.IfcPolyline;
var vertices = boundShape.Points.Select(p => p.Coordinates).ToList();
decimal xFactor = 0;
decimal yFactor = 0;
for (var i = 0; i < vertices.Count - 1; i++)
{
var x1 = Convert.ToDecimal(vertices[i][0].Value);
var y1 = Convert.ToDecimal(vertices[i][1].Value);
var x2 = Convert.ToDecimal(vertices[(i + 1)][0].Value);
var y2 = Convert.ToDecimal(vertices[(i + 1)][1].Value);
xFactor += x1 * y2;
yFactor += y1 * x2;
}
var polygonArea = (xFactor - yFactor) / 2; // result in square milimiters
var polygonAreaInSquareMeters = polygonArea / 1000000;
// or Trace.Listeners.Add(new ConsoleTraceListener());
//INV 3 - Gipsvägg - 3G4e1R8Jn17QL8Z0aCQCCe - 9.342 -> this should be 13.148m2
//Trace.WriteLine(boundLabel + " - " + polygonAreaInSquareMeters.ToString());
}
else if (surface is IfcSurface)
{
}
else if (surface is IfcFaceSurface)
{
}
else if (surface is IfcFaceBasedSurfaceModel)
{
}
}
//return string.Empty;
}
public override void IfcParse(int propIndex, IPropertyValue value)
{
switch (propIndex)
{
case 0:
_surfaceOnRelatingElement = (IfcSurfaceOrFaceSurface) value.EntityVal;
break;
case 1:
_surfaceOnRelatedElement = (IfcSurfaceOrFaceSurface) value.EntityVal;
break;
default:
this.HandleUnexpectedAttribute(propIndex, value); break;
}
}
public override void Parse(int propIndex, IPropertyValue value, int[] nestedIndex)
{
switch (propIndex)
{
case 0:
_surfaceOnRelatingElement = (IfcSurfaceOrFaceSurface)(value.EntityVal);
return;
case 1:
_surfaceOnRelatedElement = (IfcSurfaceOrFaceSurface)(value.EntityVal);
return;
default:
throw new XbimParserException(string.Format("Attribute index {0} is out of range for {1}", propIndex + 1, GetType().Name.ToUpper()));
}
}
public override void IfcParse(int propIndex, IPropertyValue value)
{
switch (propIndex)
{
case 0:
_surfaceOnRelatingElement = (IfcSurfaceOrFaceSurface)value.EntityVal;
break;
case 1:
_surfaceOnRelatedElement = (IfcSurfaceOrFaceSurface)value.EntityVal;
break;
default:
this.HandleUnexpectedAttribute(propIndex, value); break;
}
}
public IfcConnectionSurfaceGeometry(IfcSurfaceOrFaceSurface __SurfaceOnRelatingElement, IfcSurfaceOrFaceSurface __SurfaceOnRelatedElement)
{
this._SurfaceOnRelatingElement = __SurfaceOnRelatingElement;
this._SurfaceOnRelatedElement = __SurfaceOnRelatedElement;
}
