/// <summary>
/// Appends a geometry data object to the Mesh, returns false if the mesh would become too big and needs splitting
/// </summary>
/// <param name="geometryMeshData"></param>
/// <param name="modelId"></param>
public bool Add(XbimGeometryData geometryMeshData, short modelId = 0)
{
var transform = XbimMatrix3D.FromArray(geometryMeshData.DataArray2);
if (geometryMeshData.GeometryType == XbimGeometryType.TriangulatedMesh)
{
var strm = new XbimTriangulatedModelStream(geometryMeshData.ShapeData);
var fragment = strm.BuildWithNormals(this, transform, modelId);
if (fragment.EntityLabel == -1) //nothing was added due to size being exceeded
{
return(false);
}
fragment.EntityLabel = geometryMeshData.IfcProductLabel;
fragment.EntityTypeId = geometryMeshData.IfcTypeId;
_meshes.Add(fragment);
}
else if (geometryMeshData.GeometryType == XbimGeometryType.BoundingBox)
{
var r3D = XbimRect3D.FromArray(geometryMeshData.ShapeData);
throw new NotImplementedException();//need to fix this
// Add(MakeBoundingBox(r3D, transform), geometryMeshData.IfcProductLabel, IfcMetaData.GetType(geometryMeshData.IfcTypeId), modelId);
}
else
{
throw new XbimException("Illegal geometry type found");
}
return(true);
}
//adds the content of the toAdd to this, it is added as a single mesh fragment, any meshes in toAdd are lost
public void Add(IXbimMeshGeometry3D toAdd, int entityLabel, Type ifcType, short modelId)
{
var startPosition = Positions.Count;
var fragment = new XbimMeshFragment(startPosition, TriangleIndexCount, modelId);
Positions.AddRange(toAdd.Positions);
Normals.AddRange(toAdd.Normals);
foreach (var idx in toAdd.TriangleIndices)
{
TriangleIndices.Add(idx + startPosition);
}
fragment.EndPosition = PositionCount - 1;
fragment.EndTriangleIndex = TriangleIndexCount - 1;
fragment.EntityLabel = entityLabel;
fragment.EntityTypeId = IfcMetaData.IfcTypeId(ifcType);
_meshes.Add(fragment);
}