Пример #1
0
    void SelectionBox::performSelection(std::list<AgentId> &selection, Ogre::Camera *mCamera)
    {
        if((mRight - mLeft) * (mBottom - mTop) < 0.0001)
            return;

        float left = (mLeft + 1.f) / 2.f;
        float right = (mRight + 1.f) / 2.f;
        float top = (1.f - mBottom) / 2.f;
        float bottom = (1.f - mTop) / 2.f;
        Ogre::Ray topLeft = mCamera->getCameraToViewportRay(left, top);
        Ogre::Ray topRight = mCamera->getCameraToViewportRay(right, top);
        Ogre::Ray bottomLeft = mCamera->getCameraToViewportRay(left, bottom);
        Ogre::Ray bottomRight = mCamera->getCameraToViewportRay(right, bottom);

        // These planes have now defined an "open box" which extends to infinity in front of the camera. You can think of
        // the rectangle we drew with the mouse as being the termination point of the box just in front of the camera.
        Ogre::PlaneBoundedVolume vol;
        const Ogre::Real min = .1, max = 500;
        vol.planes.push_back(Ogre::Plane(topLeft.getPoint(min), topRight.getPoint(min), bottomRight.getPoint(min)));         // front plane
        vol.planes.push_back(Ogre::Plane(topLeft.getOrigin(), topLeft.getPoint(max), topRight.getPoint(max)));         // top plane
        vol.planes.push_back(Ogre::Plane(topLeft.getOrigin(), bottomLeft.getPoint(max), topLeft.getPoint(max)));       // left plane
        vol.planes.push_back(Ogre::Plane(bottomLeft.getOrigin(), bottomRight.getPoint(max), bottomLeft.getPoint(max)));   // bottom plane
        vol.planes.push_back(Ogre::Plane(topRight.getOrigin(), topRight.getPoint(max), bottomRight.getPoint(max)));     // right plane

        Ogre::PlaneBoundedVolumeList volList;
        volList.push_back(vol);

        mVolQuery->setVolumes(volList);
        Ogre::SceneQueryResult result = mVolQuery->execute();

        // Finally we need to handle the results of the query. First we will deselect all previously selected objects,
        // then we will select all objects which were found by the query.
        std::list<Ogre::SceneNode *> nodes;
        Ogre::SceneQueryResultMovableList::iterator iter;

        for(iter = result.movables.begin(); iter != result.movables.end(); ++iter)
        {
            Ogre::MovableObject *movable = *iter;

            if(movable->getMovableType().compare("Entity") == 0)
            {
                Ogre::Entity *pentity = static_cast<Ogre::Entity *>(movable);
                nodes.push_back(pentity->getParentSceneNode());
            }
        }

        mEngine->level()->getAgentsIdsFromSceneNodes(nodes, selection);
    }
Пример #2
0
std::vector<Unite *> RTSState::getUnitesInRectangleUnderCamera(const Rectangle<float> &rectangle) const
{
    Ogre::PlaneBoundedVolume vol;
    Ogre::Camera *camera = m_gameEngine->cameraManager()->camera();
    Ogre::Ray topLeft = camera->getCameraToViewportRay(rectangle.left, rectangle.top);
    Ogre::Ray topRight = camera->getCameraToViewportRay(rectangle.left + rectangle.width, rectangle.top);
    Ogre::Ray bottomLeft = camera->getCameraToViewportRay(rectangle.left, rectangle.top + rectangle.height);
    Ogre::Ray bottomRight = camera->getCameraToViewportRay(rectangle.left + rectangle.width, rectangle.top + rectangle.height);

    vol.planes.push_back(Ogre::Plane(topLeft.getPoint(1), topRight.getPoint(1), bottomRight.getPoint(1)));         // front plane
    vol.planes.push_back(Ogre::Plane(topLeft.getOrigin(), topLeft.getPoint(100), topRight.getPoint(100)));         // top plane
    vol.planes.push_back(Ogre::Plane(topLeft.getOrigin(), bottomLeft.getPoint(100), topLeft.getPoint(100)));       // left plane
    vol.planes.push_back(Ogre::Plane(bottomLeft.getOrigin(), bottomRight.getPoint(100), bottomLeft.getPoint(100)));   // bottom plane
    vol.planes.push_back(Ogre::Plane(topRight.getOrigin(), topRight.getPoint(100), bottomRight.getPoint(100)));     // right plane

    Ogre::PlaneBoundedVolumeList volList;
    volList.push_back(vol);

    EngineManager *mng = m_gameEngine->getManager();

    Ogre::PlaneBoundedVolumeListSceneQuery *query = mng->getGraphic()->getSceneManager()->createPlaneBoundedVolumeQuery(volList);
    Ogre::SceneQueryResult result = query->execute();

    std::vector<Unite *> foundUnits;
    std::for_each(result.movables.begin(), result.movables.end(), [&foundUnits](Ogre::MovableObject * obj)
    {
        try
        {
            WorldObject *worldObj = Ogre::any_cast<WorldObject *>(obj->getUserObjectBindings().getUserAny());
            Unite *unite = dynamic_cast<Unite *>(worldObj);
            foundUnits.push_back(unite);
        }
        catch (...)
        {
        }
    });

    return foundUnits;
}