void TransFuncEditorIntensityPet::loadTransferFunction() {
// create filter with supported file formats
QString filter = "transfer function (";
for (size_t i = 0; i < transferFuncIntensity_->getLoadFileFormats().size(); ++i) {
std::string temp = "*." + transferFuncIntensity_->getLoadFileFormats()[i] + " ";
filter.append(temp.c_str());
}
filter.replace(filter.length()-1, 1, ")");
QString fileName = getOpenFileName(filter);
if (!fileName.isEmpty()) {
if (transferFuncIntensity_->load(fileName.toStdString()) &&
transferFuncGradient_->load(fileName.toStdString()))
{
if (!transferFunctionCorrect()) {
rectifyTransferFunction();
std::string error = "The transfer function contains keys which alpha value is not ";
error += "255.\nThe alpha value of these keys will be set to 255.";
QMessageBox::critical(this, tr("Error"), tr(error.c_str()));
LINFO(error);
}
ranges_.clear();
currentRange_ = tgt::ivec2(0, maximumIntensity_);
oldThreshold_ = tgt::vec2(0.f, 1.f);
if (transferFuncIntensity_->getThresholds() != tgt::vec2(0.f, 1.f))
restoreThresholds();
updateTransferFunction();
}
else {
QMessageBox::critical(this, tr("Error"), "The selected transfer function could not be loaded.");
LERROR("The selected transfer function could not be loaded. Maybe the file is corrupt.");
}
}
}
void TransFunc1DRampEditor::updateFromProperty() {
// check whether new transfer function object has been assigned
if (property_->get() != transferFuncIntensity_) {
transferFuncIntensity_ = dynamic_cast<TransFunc1DKeys*>(property_->get());
// ramp only applicable for two keys
if (transferFuncIntensity_ && transferFuncIntensity_->getNumKeys() > 2)
transferFuncIntensity_ = 0;
// propagate transfer function to mapping canvas and texture painter
texturePainter_->setTransFunc(transferFuncIntensity_);
transCanvas_->setTransFunc(transferFuncIntensity_);
// disable, if tf type unsupported
if (property_->get() && !transferFuncIntensity_) {
if (isEnabled()) {
LWARNING("Current transfer function not supported by this editor. Disabling.");
setEnabled(false);
}
}
}
// check whether the volume associated with the TransFuncProperty has changed
const VolumeBase* newHandle = property_->getVolumeHandle();
if (newHandle != volumeHandle_) {
volumeHandle_ = newHandle;
volumeChanged();
}
if (transferFuncIntensity_) {
setEnabled(true);
// update treshold widgets from tf
restoreThresholds();
// repaint control elements
repaintAll();
}
else {
setEnabled(false);
}
}
void TransFunc1DRampEditor::loadTransferFunction() {
if (!transferFuncIntensity_) {
LWARNING("No valid transfer function assigned");
return;
}
//create filter with supported file formats
QString filter = "transfer function (";
for (size_t i = 0; i < transferFuncIntensity_->getLoadFileFormats().size(); ++i) {
std::string temp = "*." + transferFuncIntensity_->getLoadFileFormats()[i] + " ";
filter.append(temp.c_str());
}
filter.replace(filter.length()-1, 1, ")");
QString fileName = getOpenFileName(filter);
if (!fileName.isEmpty()) {
if (transferFuncIntensity_->load(fileName.toStdString())) {
if (transferFuncIntensity_->getNumKeys() > 2) {
clearButtonClicked();
std::string error = "The loaded transfer function contains more than 2 keys.\n";
error += "The editor does not support this kind of transfer functions.\n";
error += "The transfer function is reset to default.";
QMessageBox::critical(this, tr("Error"), tr(error.c_str()));
LERROR(error);
}
else {
restoreThresholds();
updateTransferFunction();
}
}
else {
QMessageBox::critical(this, tr("Error"),
tr("The selected transfer function could not be loaded."));
LERROR("The selected transfer function could not be loaded. Maybe the file is corrupt.");
}
}
}
void TransFuncEditorIntensityPet::updateFromProperty() {
// check whether the volume associated with the TransFuncProperty has changed
const VolumeHandleBase* newHandle = property_->getVolumeHandle();
if (newHandle != volumeHandle_) {
volumeHandle_ = newHandle;
volumeChanged();
}
if (transferFuncGradient_) {
transferFuncGradient_->resize(maximumIntensity_ + 1);
bool emitRepaint = false;
// adjust tf when not all keys have maximum alpha
if (!transferFunctionCorrect()) {
LINFO("The transfer function contains keys that don't have maximum alpha. "
<< "The alpha value of these keys is set to 255.");
rectifyTransferFunction();
emitRepaint = true;
}
// update threshold control elements when necessary
if (transferFuncIntensity_->getThresholds() != tgt::vec2(0.f, 1.f)) {
restoreThresholds();
emitRepaint = true;
}
if (emitRepaint) {
property_->notifyChange();
emit transferFunctionChanged();
}
// repaint control elements
repaintAll();
}
else
resetEditor();
}
