void VtkVisTabWidget::on_scaleZ_textChanged(const QString &text) { bool ok = true; double scale = text.toDouble(&ok); // If z scale becomes zero, the object becomes invisible if (ok && scale != 0.0) { _item->setScale(1.0, 1.0, scale); for (int i = 0; i < _item->childCount(); i++) { VtkVisPipelineItem* childItem = _item->child(i); if (childItem) { VtkCompositeColorByHeightFilter* colorFilter = dynamic_cast<VtkCompositeColorByHeightFilter*> (childItem->compositeFilter()); if (colorFilter) VtkColorByHeightFilter::SafeDownCast( colorFilter->GetOutputAlgorithm())-> SetTableRangeScaling(scale); } } emit requestViewUpdate(); } }