void
avtImageRepresentation::GetImageFromString(unsigned char *str,
int strLength, vtkImageData *&img, vtkFloatArray *&zbuf)
{
int strLengthNew = 0;
unsigned char *strNew = 0;
if (CDecompressDataString(str, strLength, &strNew, &strLengthNew,
&timeToCompress, &timeToDecompress,
&compressionRatio))
{
delete [] str;
str = strNew;
strLength = strLengthNew;
// update the object, too
asChar = strNew;
asCharLength = strLengthNew;
}
// read the string assuming its just an image
vtkStructuredPointsReader *reader = vtkStructuredPointsReader::New();
vtkCharArray *charArray = vtkCharArray::New();
int iOwnIt = 1; // 1 means we own it -- you don't delete it.
charArray->SetArray((char *) str, strLength, iOwnIt);
reader->SetReadFromInputString(1);
reader->SetInputArray(charArray);
reader->Update();
if (img)
img->Delete();
img = reader->GetOutput();
img->SetScalarType(VTK_UNSIGNED_CHAR, img->GetInformation());
img->Register(NULL);
reader->Delete();
charArray->Delete();
// If there is a "zbuffer" point data array, then get it too
if (zbuf)
zbuf->Delete();
zbuf = dynamic_cast<vtkFloatArray*>(
img->GetPointData()->GetArray("zbuffer"));
if (zbuf)
{
zbuf->Register(NULL);
img->GetPointData()->RemoveArray("zbuffer");
}
}
void avtImageRepresentation::GetImageFromString(unsigned char *str,
int strLength, vtkImageData *&img, float *&zbuffer)
{
int strLengthNew = 0;
unsigned char *strNew = 0;
if (CDecompressDataString(str, strLength, &strNew, &strLengthNew,
&timeToCompress, &timeToDecompress,
&compressionRatio))
{
delete [] str;
str = strNew;
strLength = strLengthNew;
// update the object, too
asChar = strNew;
asCharLength = strLengthNew;
}
// read the string assuming its just an image
vtkStructuredPointsReader *reader = vtkStructuredPointsReader::New();
vtkCharArray *charArray = vtkCharArray::New();
int iOwnIt = 1; // 1 means we own it -- you don't delete it.
charArray->SetArray((char *) str, strLength, iOwnIt);
reader->SetReadFromInputString(1);
reader->SetInputArray(charArray);
reader->Update();
img = reader->GetOutput();
img->SetScalarType(VTK_UNSIGNED_CHAR, img->GetInformation());
img->Register(NULL);
// calling SetSource sets' PipelineInformation to NULL, and then
// vtkImageData no longer knows its scalar data type, and who knows
// what else.
//img->SetSource(NULL);
reader->Delete();
charArray->Delete();
// If there is a "zbuffer" point data array, then get it too
vtkDataArray *zArray = img->GetPointData()->GetArray("zbuffer");
if (zArray)
{
int size = zArray->GetSize();
zbuffer = new float[size];
memcpy(zbuffer, zArray->GetVoidPointer(0), size * sizeof(float));
zbufferRef = new int(1);
// remove the zbuffer data from the vtkImageData object
img->GetPointData()->RemoveArray("zbuffer");
}
}
