private VtkToken GetVtkToken()
{
var tok = VtkToken.Invalid;
VtkToken.TryParse(GetStringPart(), out tok);
return(tok);
}
protected void LoadPolydata(VtkPolyData polydata)
{
while (!EndOfFile)
{
_curToken = GetVtkToken();
switch (_curToken)
{
case VtkToken.Points:
LoadPoints(polydata);
break;
case VtkToken.Vertices:
case VtkToken.Lines:
case VtkToken.Polygons:
case VtkToken.TriangleStrips:
LoadPolydataItems(polydata);
break;
case VtkToken.UnknowMetadata:
SkipMetadata();
break;
case VtkToken.None:
break;
default:
return;
}
}
}
protected void LoadUnstructuredGrid(VtkUnstructuredGrid dataset)
{
while (!EndOfFile)
{
_curToken = GetVtkToken();
switch (_curToken)
{
case VtkToken.Points:
LoadPoints(dataset);
break;
case VtkToken.Cells:
LoadCells(dataset);
break;
case VtkToken.CellTypes:
LoadCellTypes(dataset);
break;
case VtkToken.UnknowMetadata:
SkipMetadata();
break;
case VtkToken.None:
break;
default:
return;
}
}
}
protected void LoadDataset(VtkModel model)
{
_curToken = GetVtkToken();
switch (_curToken)
{
// case VtkToken.StructuredPoint:break;
// case VtkToken.StructuredGrid:break;
case VtkToken.UnstructuredGrid:
var usGrid = new VtkUnstructuredGrid();
LoadUnstructuredGrid(usGrid);
model.DataSet = usGrid;
break;
case VtkToken.Polydata:
var polydata = new VtkPolyData();
LoadPolydata(polydata);
model.DataSet = polydata;
break;
// case VtkToken.RectilinearGrid:break;
// case VtkToken.Field:break;
case VtkToken.UnknowMetadata:
SkipMetadata();
break;
default:
throw new NotImplementedException(String.Format("unsupported vtk token: {0}.", _curToken));
break;
}
}
protected void LoadDataAttribs(Dictionary <string, VtkDataAttribute> attributes, int size)
{
while (!EndOfFile)
{
_curToken = GetVtkToken();
switch (_curToken)
{
case VtkToken.Scalars:
case VtkToken.ColorScalars:
LoadScalars(attributes, size);
break;
case VtkToken.LookupTable:
LoadLookupTable(attributes, size);
break;
case VtkToken.Vectors:
case VtkToken.Normals:
LoadVectorsOrNormals(attributes, size);
break;
case VtkToken.Field:
LoadField(attributes, size);
break;
case VtkToken.UnknowMetadata:
SkipMetadata();
break;
case VtkToken.None:
break;
case VtkToken.TextureCoordinates:
LoadTextureCoordinates(attributes, size);
break;
case VtkToken.Tensors:
throw new NotImplementedException(String.Format("unsupported vtk token: {0}.", _curToken));
break;
default:
return;
}
}
}
protected void SkipMetadata()
{
_curPartIdx = _curLineParts.Length;//danger, used for skip this line
while (!EndOfFile)
{
_curToken = GetVtkToken();
switch (_curToken)
{
case VtkToken.UnknownInformation:
case VtkToken.UnknownName:
case VtkToken.UnknownData:
_curPartIdx = _curLineParts.Length; //danger, used for skip this line
break;
default:
return;
}
}
}
public VtkModel Load()
{
var model = new VtkModel();
if (!LoadHeader(model))
{
return(null);
}
while (!EndOfFile)
{
if (_curToken == VtkToken.None)
{
_curToken = GetVtkToken();
}
switch (_curToken)
{
case VtkToken.Dataset:
LoadDataset(model);
break;
case VtkToken.CellData:
LoadCellData(model);
break;
case VtkToken.PointData:
LoadPointData(model);
break;
case VtkToken.UnknowMetadata:
SkipMetadata();
break;
default:
throw new NotImplementedException(string.Format("unsupported vtk token:{0}.", _curToken));
break;
}
}
return(model);
}
protected void LoadField(Dictionary <string, VtkDataAttribute> attributes, int size)
{
var fields = new FieldData();
fields.Name = GetStringPart();
attributes[fields.Name] = fields;
var numArrays = GetCount();
Debug.WriteLine(string.Format("FIELD name: {0}, numArrays: {1}", fields.Name, numArrays));
fields.Arrays = new Dictionary <string, FieldDataItem>(numArrays);
int ac = 0;
while (!EndOfFile && ac < numArrays)
{
var name = GetStringPart();
if (string.IsNullOrEmpty(name))
{
continue;
}
var item = new FieldDataItem();
item.Name = name;
item.ComponentCount = GetCount();
var numTuples = GetCount();
var dtType = GetDataType();
Debug.WriteLine(string.Format("FieldData name: {0}, numComp: {1}, numTuple: {2}, dtType: {3}", item.Name, item.ComponentCount, numTuples, dtType));
item.Tuples = new List <float[]>(numTuples);
for (int j = 0; j < numTuples; j++)
{
var arr = new float[item.ComponentCount];
for (int k = 0; k < item.ComponentCount; k++)
{
arr[k] = GetDataAsFloat(dtType);
}
item.Tuples.Add(arr);
}
fields.Arrays.Add(item.Name, item);
//danger here
bool stop = false;
while (!stop)
{
switch ((char)Peek())
{
case '\0':
case '\r':
case '\n':
GetLine();
break;
default:
stop = true;
break;
}
}
if (Peek() == (int)'M')
{
_curToken = GetVtkToken();
Debug.Assert(_curToken == VtkToken.METADATA);
SkipMetadata();
}
ac++;
}
}
