fernandotonon/QtMeshEditor

/*
-----------------------------------------------------------------------------------
A QtMeshEditor file
 
Copyright (c) Fernando Tonon (https://github.com/fernandotonon)
 
The MIT License
 
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
 
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
 
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
-----------------------------------------------------------------------------------
*/
 
#ifndef SPACECAMERA_H
#define SPACECAMERA_H
 
#include <QPoint>
#include <QMap>
 
#include <OgreFrameListener.h>
#include <OgreCamera.h>
 
 
class OgreWidget;
class QKeyEvent;
class QMouseEvent;
class QWheelEvent;
 
class SpaceCamera : Ogre::FrameListener
{
    public:
        SpaceCamera(OgreWidget* parent);
        virtual ~SpaceCamera();
 
        // Accessors
        Ogre::Camera*           getCamera();
        const Ogre::Quaternion& getOrientation() const;
        const Ogre::Real&       getCameraSpeed() const;
 
        // Mutators
        void setCameraSpeed(const Ogre::Real& newSpeed);
        void setCameraPosition(const Ogre::Vector3 &pos);
        void setTargetPosition(const Ogre::Vector3 &pos);
        void setAspectRatio(const Ogre::Real& ratio);
 
        /// FrameListener
        bool frameStarted(const Ogre::FrameEvent& event);
        bool frameEnded(const Ogre::FrameEvent& event);
 
        virtual void keyPressEvent(QKeyEvent *event);
        virtual void keyReleaseEvent(QKeyEvent *event);
 
        virtual void mousePressEvent(QMouseEvent *event);
        virtual void mouseReleaseEvent(QMouseEvent *event);
        virtual void mouseMoveEvent(QMouseEvent *event);
        virtual void wheelEvent(QWheelEvent *event);
 
    protected:
        SpaceCamera(){} // for testing purposes
 
    private:
        Ogre::SceneNode*        mCameraNode; // Node da camera
        Ogre::SceneNode*        mTarget;
        Ogre::Camera*           mCamera; // Ogre camera
        Ogre::Real              mCameraSpeed = 0.0f;
        Ogre::SceneManager*     mSceneMgr=nullptr; //SceneManager
 
        static const QPoint     invalidPoint;
        QPoint                  mOldPos;
        Ogre::Vector2           mRotation = Ogre::Vector2::ZERO;
        Ogre::Vector2           mTranslation = Ogre::Vector2::ZERO;
        Ogre::Real              mRoll = 0.0f;
 
        QMap<int, Ogre::Vector2> mKeyRotationMapping;
        QMap<int, Ogre::Vector2> mKeyTranslationMapping;
        QMap<int, Ogre::Real>    mKeyRollingMapping;
 
        void setKeyMapping();
        void zoom(const int delta);
        void pan(const Ogre::Real& deltaX, const Ogre::Real& deltaY);
        void pan(const Ogre::Vector2& translation);
        void arcBall(const Ogre::Vector2& rotation);
        void arcBall(const Ogre::Real& deltaX, const Ogre::Real& deltaY);
        void roll(const Ogre::Real& delta);
 
};
 
#endif // SPACECAMERA_H