Method attach

src/Gui/ViewProviderPlane.cpp:66–155

ViewProviderPlane::~ViewProviderPlane() = default;

void ViewProviderPlane::attach(App::DocumentObject* obj)
{
    ViewProviderDatum::attach(obj);

    std::string role = getRole();

    SoSeparator* sep = getDatumRoot();

    // Setup colors
    // Can't use transparency because of https://github.com/FreeCAD/FreeCAD/issues/18395
    // When this issue is fixed then we can use the below and remove the material here
    // and faceSeparator...
    // ShapeAppearance.setTransparency(0.8);
    auto material = new SoMaterial();
    material->transparency.setValue(0.85f);

    if (!role.empty()) {
        ShapeAppearance.setDiffuseColor(getColor(role));
    }

    SbColor color = ShapeAppearance.getDiffuseColor().asValue<SbColor>();
    material->ambientColor.setValue(color);
    material->diffuseColor.setValue(color);

    auto ps = new SoPickStyle();
    ps->style.setValue(SoPickStyle::SHAPE_ON_TOP);

    pCoords = new SoCoordinate3();
    sep->addChild(pCoords);
    sep->addChild(material);
    sep->addChild(ps);

    auto lineSeparator = new SoSeparator();
    auto pLines = new SoIndexedLineSet();
    static const int32_t lines[6] = {0, 1, 2, 3, 0, -1};
    pLines->coordIndex.setNum(6);
    pLines->coordIndex.setValues(0, 6, lines);

    lineSeparator->addChild(pLines);
    sep->addChild(lineSeparator);

    // add semi transparent face
    auto faceSeparator = new SoSeparator();
    sep->addChild(faceSeparator);

    // disable backface culling and render with two-sided lighting
    auto shapeHints = new SoShapeHints();
    shapeHints->vertexOrdering = SoShapeHints::COUNTERCLOCKWISE;
    shapeHints->shapeType = SoShapeHints::UNKNOWN_SHAPE_TYPE;
    faceSeparator->addChild(shapeHints);

    auto faceSet = new SoFaceSet();
    auto vertexProperty = new SoVertexProperty();
    vertexProperty->vertex.connectFrom(&pCoords->point);
    faceSet->vertexProperty.setValue(vertexProperty);
    faceSeparator->addChild(faceSet);

    pTextTranslation = new SoTranslation();