void VtkVisPointSetItem::Initialize(vtkRenderer* renderer)
{
// TODO vtkTransformFilter creates a new copy of the point coordinates which
// conflicts with VtkMappedMeshSource. Find a workaround!
_transformFilter = vtkTransformFilter::New();
vtkSmartPointer<vtkTransform> transform = vtkSmartPointer<vtkTransform>::New();
transform->Identity();
_transformFilter->SetTransform(transform);
_transformFilter->SetInputConnection(_algorithm->GetOutputPort());
_transformFilter->Update();
_renderer = renderer;
_mapper = QVtkDataSetMapper::New();
_mapper->InterpolateScalarsBeforeMappingOff();
_mapper->SetColorModeToMapScalars();
_mapper->SetInputConnection(_transformFilter->GetOutputPort());
_actor = vtkActor::New();
static_cast<vtkActor*>(_actor)->SetMapper(_mapper);
_renderer->AddActor(_actor);
// Determine the right pre-set properties
// Order is: _algorithm, _compositeFilter, create a new one with props copied from parent
VtkAlgorithmProperties* vtkProps = dynamic_cast<VtkAlgorithmProperties*>(_algorithm);
if (!vtkProps)
{
vtkProps = dynamic_cast<VtkAlgorithmProperties*>(_compositeFilter);
// Copy properties from parent or create a new VtkAlgorithmProperties
if (!vtkProps)
{
VtkVisPipelineItem* parentItem = dynamic_cast<VtkVisPipelineItem*>(this->parentItem());
while (parentItem)
{
VtkAlgorithmProperties* parentProps = nullptr;
if(dynamic_cast<VtkVisPointSetItem*>(parentItem))
parentProps = dynamic_cast<VtkVisPointSetItem*>(parentItem)->getVtkProperties();
if (parentProps)
{
vtkProps = new VtkAlgorithmProperties(); // TODO memory leak?
vtkProps->SetScalarVisibility(parentProps->GetScalarVisibility());
vtkProps->SetTexture(parentProps->GetTexture());
vtkProps->SetActiveAttribute(parentProps->GetActiveAttribute());
parentItem = nullptr;
}
else
parentItem = dynamic_cast<VtkVisPipelineItem*>(parentItem->parentItem());
}
// Has no parents
if (!vtkProps)
vtkProps = new VtkAlgorithmProperties(); // TODO memory leak?
}
}
_vtkProps = vtkProps;
if (vtkProps->GetActiveAttribute().length() == 0)
{
// Get first scalar and set it to active
QStringList arrayNames = this->getScalarArrayNames();
if (arrayNames.length() > 0)
vtkProps->SetActiveAttribute(arrayNames[0]);
else
vtkProps->SetActiveAttribute("Solid Color");
}
this->setVtkProperties(vtkProps);
this->SetActiveAttribute(vtkProps->GetActiveAttribute());
// Set global backface culling
QSettings settings;
bool backfaceCulling = settings.value("globalCullBackfaces", 0).toBool();
this->setBackfaceCulling(backfaceCulling);
// Set the correct threshold range
if (dynamic_cast<VtkCompositeThresholdFilter*>(this->_compositeFilter) )
{
double range[2];
this->GetRangeForActiveAttribute(range);
QList<QVariant> thresholdRangeList;
thresholdRangeList.push_back(range[0]);
thresholdRangeList.push_back(range[1]);
dynamic_cast<VtkCompositeFilter*>(this->_compositeFilter)
->SetUserVectorProperty("Range", thresholdRangeList);
}
// Show edges on meshes
if (dynamic_cast<MeshLib::VtkMappedMeshSource*>(this->_algorithm))
_vtkProps->GetProperties()->SetEdgeVisibility(1);
}
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");
}
}
}