public List <IfcElementRepresentation> GetShapes()
{
List <IfcElementRepresentation> elementReps = new List <IfcElementRepresentation>();
//iterate products
IEnumerable <IIfcElement> prod = _model.Instances.OfType <IIfcElement>();
foreach (IIfcElement e in prod)
{
IIfcProductRepresentation prodrep = e.Representation;
IfcElementRepresentation eleRep = new IfcElementRepresentation();
eleRep.attributes = new IfcObjectAttributes();
eleRep.attributes.GlobalId = e.GlobalId;
eleRep.attributes.Description = e.Description;
eleRep.attributes.HasGeometry = true;
eleRep.attributes.IfcType = e.GetType().Name;
eleRep.attributes.Namespace = e.GetType().Namespace;
eleRep.attributes.Name = e.Name;
eleRep.shapes = new List <IfcObjectShapeRepresentation>();
//https://github.com/xBimTeam/XbimGeometry/issues/131
using (var modgeom = _model.GeometryStore.BeginRead())
{
var instances = modgeom.ShapeInstances.Where(
si => si.RepresentationType == XbimGeometryRepresentationType.OpeningsAndAdditionsIncluded &&
si.IfcProductLabel == e.EntityLabel
);
var geometries = instances.Select(i => modgeom.ShapeGeometryOfInstance(i) as IXbimShapeGeometryData);
List <bool> geometryHasTransformation = new List <bool>();
foreach (var instance in instances)
{
if (instance.Transformation.Str() == "")
{
geometryHasTransformation.Add(false);
}
else
{
geometryHasTransformation.Add(true);
}
}
int geometrycount = 0;
foreach (var geometry in geometries)
{
List <List <double> > vertices = new List <List <double> >();
using (var ms = new MemoryStream(geometry.ShapeData))
using (var br = new BinaryReader(ms))
{
var mesh = br.ReadShapeTriangulation();
if (mesh == null)
{
continue;
}
if (geometryHasTransformation.ElementAt(geometrycount))
{
var transform = instances.ElementAt(0).Transformation;
mesh = mesh.Transform(transform);
}
foreach (var Meshvertex in mesh.Vertices)
{
List <double> vertex = new List <double>
{
Math.Round(Meshvertex.X, 4),
Math.Round(Meshvertex.Y, 4),
Math.Round(Meshvertex.Z, 4)
};
vertices.Add(vertex);
}
var faces = mesh.Faces;
var indices = new List <int>();
var normals = new List <XbimPackedNormal>();
foreach (var face in faces)
{
foreach (var index in face.Indices)
{
indices.Add(index);
}
if (face.Indices.Count % 3 != 0)
{
Console.WriteLine("Face not a triangle!: " + face.Indices.Count.ToString());
}
foreach (var normal in face.Normals)
{
normals.Add(normal);
}
}
IfcObjectShapeRepresentation objShape = new IfcObjectShapeRepresentation();
objShape.Faces = faces;
objShape.Indices = indices;
objShape.Normals = normals;
objShape.Vertices = vertices;
eleRep.shapes.Add(objShape);
}
geometrycount++;
}
}
elementReps.Add(eleRep);
}
return(elementReps);
}
public List <IfcObjectShapeRepresentation> GetShapesOfProduct(string guid)
{
List <IfcObjectShapeRepresentation> shapes = new List <IfcObjectShapeRepresentation>();
IIfcProduct prod = _model.Instances.OfType <IIfcProduct>().Where(x => x.GlobalId.Equals(guid)).First();
IIfcProductRepresentation prodrep = prod.Representation;
//https://github.com/xBimTeam/XbimGeometry/issues/131
using (var modgeom = _model.GeometryStore.BeginRead())
{
var instances = modgeom.ShapeInstancesOfEntity(prod.EntityLabel);
var geometries = instances.Select(i => modgeom.ShapeGeometryOfInstance(i) as IXbimShapeGeometryData);
List <bool> geometryHasTransformation = new List <bool>();
foreach (var instance in instances)
{
if (instance.Transformation.Str() == "")
{
geometryHasTransformation.Add(false);
}
else
{
geometryHasTransformation.Add(true);
}
}
int geometrycount = 0;
foreach (var geometry in geometries)
{
List <List <double> > vertices = new List <List <double> >();
using (var ms = new MemoryStream(geometry.ShapeData))
using (var br = new BinaryReader(ms))
{
var mesh = br.ReadShapeTriangulation();
if (mesh == null)
{
continue;
}
if (geometryHasTransformation.ElementAt(geometrycount))
{
var transform = instances.ElementAt(0).Transformation;
mesh = mesh.Transform(transform);
}
foreach (var Meshvertex in mesh.Vertices)
{
List <double> vertex = new List <double>
{
Math.Round(Meshvertex.X, 4),
Math.Round(Meshvertex.Y, 4),
Math.Round(Meshvertex.Z, 4)
};
vertices.Add(vertex);
}
var faces = mesh.Faces;
var indices = new List <int>();
var normals = new List <XbimPackedNormal>();
foreach (var face in faces)
{
foreach (var index in face.Indices)
{
indices.Add(index);
}
foreach (var normal in face.Normals)
{
normals.Add(normal);
}
}
IfcObjectShapeRepresentation objShape = new IfcObjectShapeRepresentation();
objShape.Faces = faces;
objShape.Indices = indices;
objShape.Normals = normals;
objShape.Vertices = vertices;
shapes.Add(objShape);
}
geometrycount++;
}
}
return(shapes);
}
