Method GltfBoundingBox

src/gltf/GltfBoundingBox.cpp:24–64

  GltfBoundingBox::GltfBoundingBox() = default;

  GltfBoundingBox::GltfBoundingBox(const std::vector<model::PlanarSurfaceGroup>& planarSurfaceGroups) {

    // Bounding Box
    BoundingBox boundingBox;
    boundingBox.addPoint(Point3d(0, 0, 0));
    boundingBox.addPoint(Point3d(1, 1, 1));
    for (const auto& group : planarSurfaceGroups) {
      boundingBox.add(group.transformation() * group.boundingBox());
    }

    double lookAtX = 0;  // (boundingBox.minX().get() + boundingBox.maxX().get()) / 2.0
    double lookAtY = 0;  // (boundingBox.minY().get() + boundingBox.maxY().get()) / 2.0
    double lookAtZ = 0;  // (boundingBox.minZ().get() + boundingBox.maxZ().get()) / 2.0
    double lookAtR =
      sqrt(std::pow(boundingBox.maxX().get() / 2.0, 2) + std::pow(boundingBox.maxY().get() / 2.0, 2) + std::pow(boundingBox.maxZ().get() / 2.0, 2));
    lookAtR = std::max(lookAtR, sqrt(std::pow(boundingBox.minX().get() / 2.0, 2) + std::pow(boundingBox.maxY().get() / 2.0, 2)
                                     + std::pow(boundingBox.maxZ().get() / 2.0, 2)));
    lookAtR = std::max(lookAtR, sqrt(std::pow(boundingBox.maxX().get() / 2.0, 2) + std::pow(boundingBox.minY().get() / 2.0, 2)
                                     + std::pow(boundingBox.maxZ().get() / 2.0, 2)));
    lookAtR = std::max(lookAtR, sqrt(std::pow(boundingBox.maxX().get() / 2.0, 2) + std::pow(boundingBox.maxY().get() / 2.0, 2)
                                     + std::pow(boundingBox.minZ().get() / 2.0, 2)));
    lookAtR = std::max(lookAtR, sqrt(std::pow(boundingBox.minX().get() / 2.0, 2) + std::pow(boundingBox.minY().get() / 2.0, 2)
                                     + std::pow(boundingBox.maxZ().get() / 2.0, 2)));
    lookAtR = std::max(lookAtR, sqrt(std::pow(boundingBox.minX().get() / 2.0, 2) + std::pow(boundingBox.maxY().get() / 2.0, 2)
                                     + std::pow(boundingBox.minZ().get() / 2.0, 2)));
    lookAtR = std::max(lookAtR, sqrt(std::pow(boundingBox.maxX().get() / 2.0, 2) + std::pow(boundingBox.minY().get() / 2.0, 2)
                                     + std::pow(boundingBox.minZ().get() / 2.0, 2)));
    lookAtR = std::max(lookAtR, sqrt(std::pow(boundingBox.minX().get() / 2.0, 2) + std::pow(boundingBox.minY().get() / 2.0, 2)
                                     + std::pow(boundingBox.minZ().get() / 2.0, 2)));

    m_lookAtR = lookAtR;
    m_lookAtX = lookAtX;
    m_lookAtY = lookAtY;
    m_lookAtZ = lookAtZ;
    m_maxX = boundingBox.maxX().get();
    m_maxY = boundingBox.maxY().get();
    m_maxZ = boundingBox.maxZ().get();
    m_minX = boundingBox.minX().get();
    m_minY = boundingBox.minY().get();
    m_minZ = boundingBox.minZ().get();
  }

  double GltfBoundingBox::lookAtR() const {
    return m_lookAtR;