static IList <GeometryObject> ImportObject(GeometryBase geometry, ObjectAttributes attributes, double scaleFactor)
{
return(geometry.ToHost(scaleFactor).ToList());
}
static IList <GeometryObject> ImportObject(File3dm model, GeometryBase geometry, ObjectAttributes attributes, Document doc, Dictionary <string, Autodesk.Revit.DB.Material> materials, double scaleFactor)
{
using (var ga = Convert.GraphicAttributes.Push())
{
switch (attributes.MaterialSource)
{
case ObjectMaterialSource.MaterialFromObject:
{
var modelMaterial = attributes.MaterialIndex < 0 ? Rhino.DocObjects.Material.DefaultMaterial : model.AllMaterials.FindIndex(attributes.MaterialIndex);
ga.MaterialId = ToHost(modelMaterial, doc, materials);
break;
}
case ObjectMaterialSource.MaterialFromLayer:
{
var modelLayer = model.AllLayers.FindIndex(attributes.LayerIndex);
var modelMaterial = modelLayer.RenderMaterialIndex < 0 ? Rhino.DocObjects.Material.DefaultMaterial : model.AllMaterials.FindIndex(modelLayer.RenderMaterialIndex);
ga.MaterialId = ToHost(modelMaterial, doc, materials);
break;
}
}
if (geometry is InstanceReferenceGeometry instance)
{
if (model.AllInstanceDefinitions.FindId(instance.ParentIdefId) is InstanceDefinitionGeometry definition)
{
var objectIds = definition.GetObjectIds();
// Compute a definition ID that includes InstanceDefinition Name, Id and content object Ids
var definitionId = definition.Name;
{
var data = new byte[(objectIds.Length + 1) * 16];
Buffer.BlockCopy(instance.ParentIdefId.ToByteArray(), 0, data, 0, 16);
for (int i = 0; i < objectIds.Length; i++)
{
Buffer.BlockCopy(objectIds[i].ToByteArray(), 0, data, (i * 16), 16);
}
using (var sha256 = System.Security.Cryptography.SHA256.Create())
definitionId += $"[{ByteArrayToString(sha256.ComputeHash(data))}]";
}
var library = DirectShapeLibrary.GetDirectShapeLibrary(doc);
if (!library.Contains(definitionId))
{
var GNodes = objectIds.
Select(x => model.Objects.FindId(x)).
Cast <File3dmObject>().
SelectMany(x => ImportObject(model, x.Geometry, x.Attributes, doc, materials, scaleFactor));
library.AddDefinition(definitionId, GNodes.ToArray());
}
var xform = instance.Xform;
xform.Affineize();
xform.DecomposeAffine(out Vector3d translation, out var linear);
xform = Rhino.Geometry.Transform.Translation(translation * scaleFactor) * linear;
return(DirectShape.CreateGeometryInstance(doc, definitionId, xform.ToHost()));
}
return(new GeometryObject[0]);
}
else
{
return(geometry.ToHost(scaleFactor).ToList());
}
}
}