void VtkVisPipelineView::addColorTable()
{
VtkVisPipelineItem* item (
static_cast<VtkVisPipelineItem*>(static_cast<VtkVisPipeline*>(this->model())->
getItem(this->selectionModel()->currentIndex())) );
const QString array_name = item->GetActiveAttribute();
QSettings settings;
QString filename = QFileDialog::getOpenFileName(this, "Select color table",
settings.value("lastOpenedLutFileDirectory"). toString(),
"Color table files (*.xml);;");
QFileInfo fi(filename);
if (fi.suffix().toLower() == "xml")
{
VtkVisPointSetItem* pointSetItem = dynamic_cast<VtkVisPointSetItem*>(item);
if (pointSetItem)
{
VtkAlgorithmProperties* props = pointSetItem->getVtkProperties();
if (props)
{
props->SetLookUpTable(array_name, filename);
item->SetActiveAttribute(array_name);
emit requestViewUpdate();
}
}
else
QMessageBox::warning(NULL, "Color lookup table could not be applied.",
"Color lookup tables can only be applied to VtkVisPointSetItem.");
QDir dir = QDir(filename);
settings.setValue("lastOpenedLutFileDirectory", dir.absolutePath());
}
}
void VtkVisImageItem::Initialize(vtkRenderer* renderer)
{
vtkImageAlgorithm* img = dynamic_cast<vtkImageAlgorithm*>(_algorithm);
img->Update();
//VtkGeoImageSource* img = dynamic_cast<VtkGeoImageSource*>(_algorithm);
double origin[3];
double spacing[3];
double range[2];
img->GetOutput()->GetOrigin(origin);
img->GetOutput()->GetSpacing(spacing);
//img->getRange(range);
img->GetOutput()->GetPointData()->GetScalars()->GetRange(range);
vtkImageShiftScale* scale = vtkImageShiftScale::New();
scale->SetOutputScalarTypeToUnsignedChar();
scale->SetInputConnection(img->GetOutputPort());
scale->SetShift(-range[0]);
scale->SetScale(255.0/(range[1]-range[0]));
_transformFilter = vtkImageChangeInformation::New();
_transformFilter->SetInputConnection(scale->GetOutputPort());
//double origin[3];
//img->getOrigin(origin);
//double spacing = img->getSpacing();
//_transformFilter->SetOutputOrigin(origin2);
//_transformFilter->SetOutputSpacing(spacing2);
_transformFilter->Update();
_renderer = renderer;
// Use a special vtkImageActor instead of vtkActor
vtkImageActor* imageActor = vtkImageActor::New();
imageActor->SetInput(_transformFilter->GetOutput());
_actor = imageActor;
_renderer->AddActor(_actor);
// Set pre-set properties
VtkAlgorithmProperties* vtkProps = dynamic_cast<VtkAlgorithmProperties*>(_algorithm);
if (vtkProps)
setVtkProperties(vtkProps);
VtkVisPipelineItem* parentItem = dynamic_cast<VtkVisPipelineItem*>(this->parentItem());
while (parentItem)
{
VtkAlgorithmProperties* parentProps =
dynamic_cast<VtkAlgorithmProperties*>(parentItem->algorithm());
if (parentProps)
{
VtkAlgorithmProperties* newProps = new VtkAlgorithmProperties();
newProps->SetScalarVisibility(parentProps->GetScalarVisibility());
newProps->SetTexture(parentProps->GetTexture());
setVtkProperties(newProps);
vtkProps = newProps;
parentItem = NULL;
}
else
parentItem = dynamic_cast<VtkVisPipelineItem*>(parentItem->parentItem());
}
// Set active scalar to the desired one from VtkAlgorithmProperties
// or to match those of the parent.
if (vtkProps)
{
if (vtkProps->GetActiveAttribute().length() > 0)
this->SetActiveAttribute(vtkProps->GetActiveAttribute());
else
{
VtkVisPipelineItem* visParentItem =
dynamic_cast<VtkVisPipelineItem*>(this->parentItem());
if (visParentItem)
this->SetActiveAttribute(visParentItem->GetActiveAttribute());
if (vtkProps->GetTexture() != NULL)
this->SetActiveAttribute("Solid Color");
}
}
}
