GUIOSGPerspectiveChanger.h

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/****************************************************************************/
// Eclipse SUMO, Simulation of Urban MObility; see https://eclipse.dev/sumo
// Copyright (C) 2001-2024 German Aerospace Center (DLR) and others.
// This program and the accompanying materials are made available under the
// terms of the Eclipse Public License 2.0 which is available at
// https://www.eclipse.org/legal/epl-2.0/
// This Source Code may also be made available under the following Secondary
// Licenses when the conditions for such availability set forth in the Eclipse
// Public License 2.0 are satisfied: GNU General Public License, version 2
// or later which is available at
// https://www.gnu.org/licenses/old-licenses/gpl-2.0-standalone.html
// SPDX-License-Identifier: EPL-2.0 OR GPL-2.0-or-later
/****************************************************************************/
// Implementation of GUIPerspectiveChanger for OSG 3D views
/****************************************************************************/
#pragma once
#include <config.h>
 
#include <utils/geom/Position.h>
#include <utils/gui/windows/GUIPerspectiveChanger.h>
#include "GUIOSGHeader.h"
#include "GUIOSGView.h"
 
 
// ===========================================================================
// class declarations
// ===========================================================================
class Boundary;
 
class GUIOSGPerspectiveChanger : public GUIPerspectiveChanger {
public:
 
    /* Constructor
     * @param[in] callBack The view to be udpated upon changes
     */
    GUIOSGPerspectiveChanger(GUIOSGView& callBack, const Boundary& viewPort);
 
    ~GUIOSGPerspectiveChanger();
 
 
 
    bool onLeftBtnRelease(void* data);
 
    bool onRightBtnRelease(void* data);
 
    bool onMiddleBtnRelease(void* data);
 
    void onMouseMove(void* data);
 
    double getRotation() const;
 
    double getXPos() const;
 
    double getYPos() const;
 
    double getZoom() const;
 
    double getZPos() const;
 
    double zoom2ZPos(double zoom) const;
 
    double zPos2Zoom(double zPos) const;
 
    void centerTo(const Position& pos, double radius, bool applyZoom = true);
 
    void setViewport(double zoom, double xPos, double yPos);
 
    void setViewportFrom(double xPos, double yPos, double zPos);
 
    void setRotation(double rotation);
 
    /* @brief Adapts the viewport so that a change in canvass size keeps most of the
     * view intact (by showing more / less instead of zooming)
     * The canvass is clipped/enlarged on the left side of the screen
     *
     * @param[in] change The horizontal change in canvas size in pixels
     */
    void changeCanvasSizeLeft(int change);
 
    void setViewport(const Boundary& viewPort);
 
    void updateViewport();
 
private:
    void updateViewport(osg::Vec3d& lookFrom);
 
    osg::Vec3d getPositionOnGround(double x, double y);
private:
    double myOrigWidth, myOrigHeight;
 
    double myRotation;
 
    osg::ref_ptr<osgGA::TerrainManipulator> myCameraManipulator;
 
    GUIOSGPerspectiveChanger(const GUIOSGPerspectiveChanger&);
 
    GUIOSGPerspectiveChanger& operator=(const GUIOSGPerspectiveChanger&);
};