VRS - The Virtual Rendering System

version 3.3

ufophysicalnavigation.h

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/******************************************************************************
 * VRS - The Virtual Rendering System
 * Copyright (C) 2000-2004 Computer Graphics Systems Group at the 
 * Hasso-Plattner-Institute (HPI), Potsdam, Germany.
 *
 * This  library  is  free  software; you can redistribute it and/or  modify it
 * under the terms of the GNU Lesser General Public  License  as  published  by
 * the  Free  Software  Foundation;  either  version 2.1 of the License, or (at
 * your option) any later version. This library  is  distributed  in  the  hope
 * that  it will be useful, but  WITHOUT ANY WARRANTY; without even the implied
 * warranty of  MERCHANTABILITY or FITNESS FOR A PARTICULAR  PURPOSE.  See  the
 * GNU Lesser General Public License for more details. You should have received
 * a copy of the GNU Lesser+ General Public License along with this library; if
 * not, write to the FreeSoftware Foundation, Inc., 59 Temple Place, Suite 330,
 * Boston, MA, 02111-1307, USA.
 ******************************************************************************/

// $Id: ufophysicalnavigation.h 6014 2007-08-09 07:51:16Z Konstantin_Baumann $
// $Date: 2007-08-09 09:51:16 +0200 (Thu, 09 Aug 2007) $
// $Revision: 6014 $
// $State$
// $Author: Konstantin_Baumann $
//
// $Log$
// Revision 1.13  2005/01/20 10:30:49  bohnet
// bug fixed - ufonavigation did not react correctly on keys
//
// Revision 1.12  2005/01/03 01:43:10  klimetschek
// - modified win32 project layout, splitted vrs.vcproj into vrs_container, vrs_core, vrs_sg, vrs_image, vrs_opengl and vrs_io
// - removed vrs.vcproj
// minor things:
// - added all glutexamples to vrs4glut.sln
// - fixed some problems in glutexamples
// - removed all project references from all VS projects (using solution wide project dependencies instead)
//
// Revision 1.11  2004/11/23 06:48:39  baumann
// typos fixed
//
// Revision 1.10  2004/11/23 06:44:29  baumann
// "allow backward movement" flag added
//
// Revision 1.9  2004/11/21 09:59:11  baumann
// setMinMaxLookDownAngles() added
//
// Revision 1.8  2004/11/21 09:13:27  baumann
// getMaxLookDownAngle() and setMaxLookDownAngle() added
//
// Revision 1.7  2004/10/28 14:16:01  basch
// Class comment changed (Doxygen style)
//
// Revision 1.6  2004/07/28 17:36:28  baumann
// changed VRS::Vector3f to VRS::Vector
//
// Revision 1.5  2004/07/07 13:52:48  bohnet
// keys can wake up navigation
//
// Revision 1.4  2004/05/27 12:53:07  bohnet
// minor changes
//
// Revision 1.3  2004/05/18 07:37:31  bohnet
// internal calculations with float now
//
// Revision 1.2  2004/04/22 15:40:59  kirsch
// added endline at the end of file (fixes gcc warning)
//
// Revision 1.1  2004/04/13 13:35:31  bohnet
// provides navigation metaphor based on a physical model
//

#ifndef VRS_SG_UFOPHYSICALNAVIGATION_H
#define VRS_SG_UFOPHYSICALNAVIGATION_H

#include <vrs/sg/physicalnavigation.h>

#undef min
#undef max

namespace VRS {

class VRS_CORE_API UfoPhysicalNavigation : public PhysicalNavigation {

public:
        UfoPhysicalNavigation(
                LookAt* lookAt = NULL,
        InputEvent::Button button = InputEvent::MouseButton1,
        InputEvent::Modifier must_modifier = InputEvent::NoModifier,
        InputEvent::Modifier must_not_modifier = InputEvent::NoModifier,
                double meterDefinition = 1.0,
                double minHeight = 0.0,
                double heightSensitivity = 0.1,
                FilterTag* filterTag = NULL,
                Vector gravitationDir = Vector(0.0, -1.0, 0.0),
                PhysicalForce::ForceMode forceMode = PhysicalForce::Spring
        );      
        double getMinHeight() const;
        void setMinHeight(double minHeight);

        double getSpeedSensitivity() const;
        void setSpeedSensitivity(double);

        double getMaxLookDownAngle() const;
        void setMaxLookDownAngle(double angle);
        double getMinLookDownAngle() const;
        void setMinLookDownAngle(double angle);
        void setMinMaxLookDownAngles(double minAngle, double maxAngle);

    bool allowBackwardMovement() const;
    void setAllowBackwardMovement(bool yesNo);

    VRS_TYPEINFO(UfoPhysicalNavigation, PhysicalNavigation);
    VRS_SERIALIZABLE(UfoPhysicalNavigation);

protected:
        float minHeight_;
        virtual void translateInteractionIntoTargetPos(
        Vector& target, Vector& dir,
        float x, float y,
        double time_now, double time_lastCalc
    );
        virtual bool validateTargetPosition(Vector& target, const Vector& oldTarget, const Vector& dir);
        virtual BehaviorNode::InvalidationHint processKeyEvent(KeyEvent*);
        virtual void updateLookAt(const Vector& pos, const Vector& dir);
        virtual void initPhysicalNavigation(const Vector&);
        virtual bool keyCanWakeUpNavigation(KeyEvent*);
    virtual InvalidationHint handle(Event*);

private:
        float currentHeight_;
        double heightSensitivity_;
        double speed_;
        double speedSensitivity_;
        double leftrightSensitivity_;
        double lookingDownOnTerrainAngle_;
    double maxLookingDownOnTerrainAngle_;
    double minLookingDownOnTerrainAngle_;
        double lookingDownSensitivity_;
    bool m_allowBackwardMovement;
};

inline double UfoPhysicalNavigation::getSpeedSensitivity() const { return speedSensitivity_; }
inline void UfoPhysicalNavigation::setSpeedSensitivity(double val) { if (val>0.0) speedSensitivity_ = val; }

inline double UfoPhysicalNavigation::getMinHeight() const { return (double)minHeight_; }
inline void UfoPhysicalNavigation::setMinHeight(double val) { if (val>=0.0) minHeight_ = (float)val; }

} // namespace VRS

#endif // VRS_SG_UFOPHYSICALNAVIGATION_H

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