public void Add(string mesh, short productTypeId, int productLabel, int geometryLabel, XbimMatrix3D?transform, short modelId)
{
lock (meshLock)
{
var frag = new XbimMeshFragment(PositionCount, TriangleIndexCount, productTypeId, productLabel, geometryLabel, modelId);
Read(mesh, transform);
frag.EndPosition = PositionCount - 1;
frag.EndTriangleIndex = TriangleIndexCount - 1;
_meshes.Add(frag);
}
}
public IXbimMeshGeometry3D GetMeshGeometry3D(XbimMeshFragment frag)
{
var m3D = new XbimMeshGeometry3D();
for (var i = frag.StartPosition; i <= frag.EndPosition; i++)
{
m3D.Positions.Add(Positions[i]);
m3D.Normals.Add(Normals[i]);
}
for (var i = frag.StartTriangleIndex; i <= frag.EndTriangleIndex; i++)
{
m3D.TriangleIndices.Add(TriangleIndices[i] - frag.StartPosition);
}
return(m3D);
}
//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);
}
/// <summary>
/// Builds a triangulated mesh with normals, appends points etc t the end of the existing mesh
/// </summary>
/// <typeparam name="TGeomType"></typeparam>
/// <param name="builder"></param>
/// <param name="transform"></param>
/// <param name="modelId"></param>
/// <returns>The fragment defining the piece of the mesh built with this operation
/// If there is no data an empty fragment is returned, if the mesh is goinng to excees the size of a an unsigned short
/// then the data is not added and a fragement with zero number of points is returned and
/// a start position that is equal to the length of the mesh. The Entity Label is also sent to int.MinValue</returns>
public XbimMeshFragment BuildWithNormals <TGeomType>(TGeomType builder, XbimMatrix3D transform, short modelId = 0) where TGeomType : IXbimTriangulatesToPositionsNormalsIndices
{
_dataStream.Seek(0, SeekOrigin.Begin);
BinaryReader br = new BinaryReader(_dataStream);
if (!IsEmpty) // has data
{
builder.BeginBuild();
XbimMeshFragment fragment = new XbimMeshFragment(builder.PositionCount, builder.TriangleIndexCount, modelId);
if (!BuildWithNormals(builder, br, transform))
{
fragment.EntityLabel = -1; //set the entity label to indicate failure
}
fragment.EndPosition = builder.PositionCount - 1;
fragment.EndTriangleIndex = builder.TriangleIndexCount - 1;
builder.EndBuild();
return(fragment);
}
else
{
return(default(XbimMeshFragment));
}
}
public MeshInfo(XbimMeshFragment mf, XbimMeshLayer <TMesh, TMaterial> xbimMeshLayer)
{
_mf = mf;
_xbimMeshLayer = xbimMeshLayer;
}
