UnstructGrid: Apply Part Settings to a Model

Each part has part settings that can be configured to make a better visual appearance of your data, for instance settings such as visibility, draw style, coloring, highlighting and result visibility.

The demo file (contact.vtfx) contains a geometry with four parts. This example shows how to set the following settings on these parts:

• Part 1: Set invisible

• Part 2: Set color to red

• Part 3: Set draw style surface mesh

• Part 4: Set transparent

void TutorialRunnerMainWindow::setPartSettings()
{
    //--------------------------------------------------------------------------
    // Load an UnstructGridModel from file
    // Apply some part settings
    //--------------------------------------------------------------------------

    // Create the model and data source
    cee::PtrRef<cee::ug::UnstructGridModel> ugModel = new cee::ug::UnstructGridModel();
    cee::PtrRef<cee::ug::DataSourceVTFx> source = new cee::ug::DataSourceVTFx(42);

    // Open the VTFx file
    cee::Str vtfxFile = TutorialUtils::testDataDir() + "contact.vtfx";
    if (!source->open(vtfxFile, 0))
    {
        // VTFx file not found
        return;
    }

    // Add the data source to the model
    ugModel->setDataSource(source.get());

    // Set the first state as current
    std::vector<cee::ug::StateInfo> stateInfos = source->directory()->stateInfos();
    int stateId = stateInfos[0].id();
    ugModel->modelSpec().setStateId(stateId);

    // This model contains 4 parts
    // Part 1: Set invisible
    // Part 2: Set color to blue
    // Part 3: Set draw style surface mesh
    // Part 4: Set transparent

    // Get the id for all the parts through the meta data directory
    // Get the corresponding part settings
    // Set the part setting as listed above
    std::vector<cee::ug::PartInfo> partInfos = source->directory()->partInfos(0);
    int firstPartId     = partInfos[0].id();
    int secondPartId    = partInfos[1].id();
    int thirdPartId     = partInfos[2].id();
    int fourthPartId    = partInfos[3].id();

    // Part 1: Set invisible
    ugModel->partSettings(0, firstPartId)->setVisible(false);

    // Part 2: Set color to blue
    ugModel->partSettings(0, secondPartId)->setColor(cee::Color3f(0.0, 0.0, 1.0));

    // Part 3: Set draw style surface mesh
    ugModel->partSettings(0, thirdPartId)->setDrawStyle(cee::ug::PartSettings::SURFACE_MESH);

    // Part 4: Set transparent
    ugModel->partSettings(0, fourthPartId)->setOpacity(0.5f);

    // Add model to view. Ensure that old models are removed first
    cee::vis::View* gcView = getTutorialView();
    gcView->removeAllModels();
    gcView->addModel(ugModel.get());

    ugModel->updateVisualization();

    cee::BoundingBox bb = gcView->boundingBox();
    gcView->camera().fitView(bb, cee::Vec3d(0, 0, -1), cee::Vec3d(0, 1, 0));
    gcView->camera().inputHandler()->setRotationPoint(bb.center());

    gcView->requestRedraw();
}