Method orientScene

src/qtviewer/IfcViewerWidget.cpp:165–202

}

void IfcViewerWidget::orientScene(osg::ref_ptr<osg::Group> rootGroup)
{
    // Get the bounding-box
    osg::ComputeBoundsVisitor cbv;
    rootGroup->accept(cbv);
    const osg::BoundingBox& bb = cbv.getBoundingBox();

    // Center (average of opposite corners of bb)
    osg::Vec3d center = (bb.corner(0) + bb.corner(7)) * 0.5;

    // Radius (distance between the center and the corner)
    // assuming corner(7) has maximum x,y,z coords
    float radius = (bb.corner(7) - center).length();

    // Calc. eye position
    osg::Vec3d eye = center + osg::Vec3d(radius * 3, -radius * 3, 0.0);

    osg::Vec3d up = osg::Vec3d(0.0, 0.0, 1.0);

    // Set the camera's view matrix
    // In case a cameraManipulator is set, lookAt position setting does not work on the camera
    // as it is overridden.
    // So set it on the manipulator and reapply it to the viewer
    if (m_mouseHandler.valid())
    {
      m_mouseHandler->setHomePosition(eye, center, up);
    }

    m_viewer->setCameraManipulator(m_mouseHandler);

  auto log = [center, radius, eye]() {
      MessageLogger::log("center: " + std::to_string(center.length()));
      MessageLogger::log("radius: " + std::to_string(radius));
      MessageLogger::log("center: " + std::to_string(center.x()) + ", " + std::to_string(center.y()) + ", " + std::to_string(center.z()));
      MessageLogger::log("eye: " + std::to_string(eye.x()) + ", " + std::to_string(eye.y()) + ", " + std::to_string(eye.z()));
  };
  //log();
}