private GeometryModel3D Box(double width, double length, double height)
{
var model = new GeometryModel3D();
model.SetValue(FrameworkElement.NameProperty, "box");
var mb = new MeshBuilder();
mb.AddBox(new Point3D(0, 0, height*0.5), width, length, height);
model.Geometry = mb.ToMesh();
model.Material = material;
return model;
}
/// <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>
public XbimScene<WpfMeshGeometry3D, WpfMaterial> BuildScene(XbimModel model, Xbim3DModelContext context,
List<Type> exclude = null)
{
var scene = new XbimScene<WpfMeshGeometry3D, WpfMaterial>(model);
if (context == null)
return scene;
//get a list of all the unique styles
var styles = new Dictionary<int, WpfMaterial>();
var repeatedShapeGeometries = new Dictionary<int, MeshGeometry3D>();
var styleMeshSets = new Dictionary<int, WpfMeshGeometry3D>();
var tmpOpaquesGroup = new Model3DGroup();
var tmpTransparentsGroup = new Model3DGroup();
var sstyles = context.SurfaceStyles();
foreach (var style in sstyles)
{
var wpfMaterial = new WpfMaterial();
wpfMaterial.CreateMaterial(style);
styles.Add(style.DefinedObjectId, wpfMaterial);
var mg = new WpfMeshGeometry3D(wpfMaterial, wpfMaterial);
mg.WpfModel.SetValue(FrameworkElement.TagProperty, mg);
styleMeshSets.Add(style.DefinedObjectId, mg);
mg.BeginUpdate();
if (style.IsTransparent)
tmpTransparentsGroup.Children.Add(mg);
else
tmpOpaquesGroup.Children.Add(mg);
}
if (!styles.Any()) return scene; //this should always return something
int i = 0;
var shapeInstances = context.ShapeInstances()
.Where(s => s.RepresentationType == XbimGeometryRepresentationType.OpeningsAndAdditionsIncluded &&
!typeof (IfcFeatureElement).IsAssignableFrom(IfcMetaData.GetType(s.IfcTypeId)) /*&&
!typeof(IfcSpace).IsAssignableFrom(IfcMetaData.GetType(s.IfcTypeId))*/);
foreach (var shapeInstance in shapeInstances)
{
Console.WriteLine(i++);
var styleId = shapeInstance.StyleLabel > 0 ? shapeInstance.StyleLabel : shapeInstance.IfcTypeId * -1;
//GET THE ACTUAL GEOMETRY
MeshGeometry3D wpfMesh;
//see if we have already read it
if (repeatedShapeGeometries.TryGetValue(shapeInstance.ShapeGeometryLabel, out wpfMesh))
{
var mg = new GeometryModel3D(wpfMesh, styles[styleId]);
mg.SetValue(FrameworkElement.TagProperty,
new XbimInstanceHandle(model, shapeInstance.IfcProductLabel, shapeInstance.IfcTypeId));
mg.BackMaterial = mg.Material;
mg.Transform =
XbimMatrix3D.Multiply(shapeInstance.Transformation, Control.WcsTransform).ToMatrixTransform3D();
if (styles[styleId].IsTransparent)
tmpTransparentsGroup.Children.Add(mg);
else
tmpOpaquesGroup.Children.Add(mg);
}
else //we need to get the shape geometry
{
IXbimShapeGeometryData shapeGeom = context.ShapeGeometry(shapeInstance.ShapeGeometryLabel);
if (shapeGeom.ReferenceCount > 1) //only store if we are going to use again
{
wpfMesh = new MeshGeometry3D();
switch ((XbimGeometryType)shapeGeom.Format)
{
case XbimGeometryType.PolyhedronBinary:
wpfMesh.Read(shapeGeom.ShapeData);
break;
case XbimGeometryType.Polyhedron:
wpfMesh.Read(((XbimShapeGeometry)shapeGeom).ShapeData);
break;
}
repeatedShapeGeometries.Add(shapeInstance.ShapeGeometryLabel, wpfMesh);
var mg = new GeometryModel3D(wpfMesh, styles[styleId]);
mg.SetValue(FrameworkElement.TagProperty,
new XbimInstanceHandle(model, shapeInstance.IfcProductLabel, shapeInstance.IfcTypeId));
mg.BackMaterial = mg.Material;
mg.Transform =
XbimMatrix3D.Multiply(shapeInstance.Transformation, Control.WcsTransform).ToMatrixTransform3D();
if (styles[styleId].IsTransparent)
tmpTransparentsGroup.Children.Add(mg);
else
tmpOpaquesGroup.Children.Add(mg);
}
else //it is a one off, merge it with shapes of a similar material
{
var targetMergeMeshByStyle = styleMeshSets[styleId];
switch ((XbimGeometryType)shapeGeom.Format)
{
case XbimGeometryType.Polyhedron:
var shapePoly = (XbimShapeGeometry)shapeGeom;
targetMergeMeshByStyle.Add(
shapePoly.ShapeData,
shapeInstance.IfcTypeId,
shapeInstance.IfcProductLabel,
shapeInstance.InstanceLabel,
XbimMatrix3D.Multiply(shapeInstance.Transformation, Control.WcsTransform));
break;
case XbimGeometryType.PolyhedronBinary:
targetMergeMeshByStyle.Add(
shapeGeom.ShapeData,
shapeInstance.IfcTypeId,
shapeInstance.IfcProductLabel,
shapeInstance.InstanceLabel,
XbimMatrix3D.Multiply(shapeInstance.Transformation, Control.WcsTransform));
break;
default:
throw new ArgumentOutOfRangeException();
}
}
}
}
foreach (var wpfMeshGeometry3D in styleMeshSets.Values)
{
wpfMeshGeometry3D.EndUpdate();
}
//}
if (tmpOpaquesGroup.Children.Any())
{
var mv = new ModelVisual3D();
mv.Content = tmpOpaquesGroup;
Control.Opaques.Children.Add(mv);
Control.ModelBounds = mv.Content.Bounds.ToXbimRect3D();
}
if (tmpTransparentsGroup.Children.Any())
{
var mv = new ModelVisual3D();
mv.Content = tmpTransparentsGroup;
Control.Transparents.Children.Add(mv);
if (Control.ModelBounds.IsEmpty) Control.ModelBounds = mv.Content.Bounds.ToXbimRect3D();
else Control.ModelBounds.Union(mv.Content.Bounds.ToXbimRect3D());
}
return scene;
}
