CameraOrbitTool.h

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/*
 * Copyright (C) 2012 by
 *   MetraLabs GmbH (MLAB), GERMANY
 * and
 *   Neuroinformatics and Cognitive Robotics Labs (NICR) at TU Ilmenau, GERMANY
 * All rights reserved.
 *
 * Contact: info@mira-project.org
 *
 * Commercial Usage:
 *   Licensees holding valid commercial licenses may use this file in
 *   accordance with the commercial license agreement provided with the
 *   software or, alternatively, in accordance with the terms contained in
 *   a written agreement between you and MLAB or NICR.
 *
 * GNU General Public License Usage:
 *   Alternatively, this file may be used under the terms of the GNU
 *   General Public License version 3.0 as published by the Free Software
 *   Foundation and appearing in the file LICENSE.GPL3 included in the
 *   packaging of this file. Please review the following information to
 *   ensure the GNU General Public License version 3.0 requirements will be
 *   met: http://www.gnu.org/copyleft/gpl.html.
 *   Alternatively you may (at your option) use any later version of the GNU
 *   General Public License if such license has been publicly approved by
 *   MLAB and NICR (or its successors, if any).
 *
 * IN NO EVENT SHALL "MLAB" OR "NICR" BE LIABLE TO ANY PARTY FOR DIRECT,
 * INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF
 * THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF "MLAB" OR
 * "NICR" HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * "MLAB" AND "NICR" SPECIFICALLY DISCLAIM ANY WARRANTIES, INCLUDING,
 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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 */

#ifndef _MIRA_CAMERAORBITTOOL2D_H_
#define _MIRA_CAMERAORBITTOOL2D_H_

#include <QtGui/QMouseEvent>

#include <math/Math.h>

#include <visualization/VisualizationTool2D.h>

namespace mira {


class MIRA_GUI_VISUALIZATION_EXPORT CameraOrbitTool2D : public VisualizationTool2D
{
    MIRA_META_OBJECT(CameraOrbitTool2D,
            ("Name", "Orbit")
            ("Description", "Moves the observer camera around")
            ("Category", "Camera")
            ("Order", "0"))

public:

    CameraOrbitTool2D();

    virtual QIcon getIcon();

    virtual void onMousePressed(QMouseEvent* e);
    virtual void onMouseReleased(QMouseEvent* e);
    virtual void onMouseMoved(QMouseEvent* e);
    virtual void onMouseWheel(QWheelEvent * e);

    virtual int getDisplaceShortCut() const;

    void activate();

    void deactivate();

    virtual QGraphicsItem* setupScene(QGraphicsScene* mgr);

    void updateOwnRepresentation();

private:

    void zoom(int numSteps, const QPoint& pivot);
    void rotate(int numSteps, const QPoint& pivot);

    IVisualization2DSite::Camera mCamera;
    QPoint  mOldMousePos;
    QPoint  mMouseDownPos;
    bool mPan;
    bool mRotate;
};



} // namespace

#endif