/// <summary>
/// This version uses the new Geometry representation
/// </summary>
/// <param name="model"></param>
/// <param name="context"></param>
/// <param name="exclude">List of type to exclude, by default excplict openings and spaces are excluded if exclude = null</param>
/// <returns></returns>
private void BuildScene(Xbim3DModelContext context)
{
//get a list of all the unique styles
Dictionary<int, WpfMaterial> styles = new Dictionary<int, WpfMaterial>();
Dictionary<int, MeshGeometry3D> shapeGeometries = new Dictionary<int, MeshGeometry3D>();
Dictionary<int, WpfMeshGeometry3D> meshSets = new Dictionary<int, WpfMeshGeometry3D>();
Model3DGroup opaques = new Model3DGroup();
Model3DGroup transparents = new Model3DGroup();
foreach (var shapeGeom in context.ShapeGeometries())
{
MeshGeometry3D wpfMesh = new MeshGeometry3D();
wpfMesh.SetValue(TagProperty, shapeGeom); //don't read the geometry into the mesh yet as we do not know where the instance is located
shapeGeometries.Add(shapeGeom.ShapeLabel, wpfMesh);
}
foreach (var style in context.SurfaceStyles())
{
WpfMaterial wpfMaterial = new WpfMaterial();
wpfMaterial.CreateMaterial(style);
styles.Add(style.DefinedObjectId, wpfMaterial);
WpfMeshGeometry3D mg = new WpfMeshGeometry3D(wpfMaterial, wpfMaterial);
meshSets.Add(style.DefinedObjectId, mg);
if (style.IsTransparent)
transparents.Children.Add(mg);
else
opaques.Children.Add(mg);
}
////if (!styles.Any()) return ; //this should always have something unless the model is empty
////double metre = model.ModelFactors.OneMetre;
////XbimMatrix3D wcsTransform = XbimMatrix3D.CreateTranslation(_modelTranslation) * XbimMatrix3D.CreateScale((float)(1 / metre));
////foreach (var shapeInstance in context.ShapeInstances()
//// .Where(s => s.RepresentationType == XbimGeometryRepresentationType.OpeningsAndAdditionsIncluded &&
//// !typeof(IfcFeatureElement).IsAssignableFrom(IfcMetaData.GetType(s.IfcTypeId)) &&
//// !typeof(IfcSpace).IsAssignableFrom(IfcMetaData.GetType(s.IfcTypeId))))
////{
//// int styleId = shapeInstance.StyleLabel > 0 ? shapeInstance.StyleLabel : shapeInstance.IfcTypeId * -1;
//// //GET THE ACTUAL GEOMETRY
//// MeshGeometry3D wpfMesh;
//// //see if we have already read it
//// if (shapeGeometries.TryGetValue(shapeInstance.ShapeGeometryLabel, out wpfMesh))
//// {
//// GeometryModel3D mg = new GeometryModel3D(wpfMesh, styles[styleId]);
//// mg.SetValue(TagProperty, new XbimInstanceHandle(model, shapeInstance.IfcProductLabel, shapeInstance.IfcTypeId));
//// mg.BackMaterial = mg.Material;
//// mg.Transform = XbimMatrix3D.Multiply(shapeInstance.Transformation, wcsTransform).ToMatrixTransform3D();
//// if (styles[styleId].IsTransparent)
//// transparents.Children.Add(mg);
//// else
//// opaques.Children.Add(mg);
//// }
//// else //we need to get the shape geometry
//// {
//// XbimShapeGeometry shapeGeom = context.ShapeGeometry(shapeInstance.ShapeGeometryLabel);
//// if (shapeGeom.ReferenceCount > 1) //only store if we are going to use again
//// {
//// wpfMesh = new MeshGeometry3D();
//// wpfMesh.Read(shapeGeom.ShapeData);
//// shapeGeometries.Add(shapeInstance.ShapeGeometryLabel, wpfMesh);
//// GeometryModel3D mg = new GeometryModel3D(wpfMesh, styles[styleId]);
//// mg.SetValue(TagProperty, new XbimInstanceHandle(model, shapeInstance.IfcProductLabel, shapeInstance.IfcTypeId));
//// mg.BackMaterial = mg.Material;
//// mg.Transform = XbimMatrix3D.Multiply(shapeInstance.Transformation, wcsTransform).ToMatrixTransform3D();
//// if (styles[styleId].IsTransparent)
//// transparents.Children.Add(mg);
//// else
//// opaques.Children.Add(mg);
//// }
//// else //it is a one off, merge it with shapes of a similar material
//// {
//// WpfMeshGeometry3D mg = meshSets[styleId];
//// mg.Add(shapeGeom.ShapeData,
//// shapeInstance.IfcTypeId,
//// shapeInstance.IfcProductLabel,
//// shapeInstance.InstanceLabel,
//// XbimMatrix3D.Multiply(shapeInstance.Transformation, wcsTransform), 0);
//// }
//// }
////}
if (opaques.Children.Any())
{
ModelVisual3D mv = new ModelVisual3D();
mv.Content = opaques;
Opaques.Children.Add(mv);
if (_modelBounds.IsEmpty) _modelBounds = mv.Content.Bounds.ToXbimRect3D();
else _modelBounds.Union(mv.Content.Bounds.ToXbimRect3D());
}
if (transparents.Children.Any())
{
ModelVisual3D mv = new ModelVisual3D();
mv.Content = transparents;
Transparents.Children.Add(mv);
if (_modelBounds.IsEmpty) _modelBounds = mv.Content.Bounds.ToXbimRect3D();
else _modelBounds.Union(mv.Content.Bounds.ToXbimRect3D());
}
}