GoGoSinkSource.h

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 /* ========================================================================
  * Copyright (c) 2006,
  * Institute for Computer Graphics and Vision
  * Graz University of Technology
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  * Redistributions of source code must retain the above copyright notice,
  * this list of conditions and the following disclaimer.
  *
  * Redistributions in binary form must reproduce the above copyright
  * notice, this list of conditions and the following disclaimer in the
  * documentation and/or other materials provided with the distribution.
  *
  * Neither the name of the Graz University of Technology nor the names of
  * its contributors may be used to endorse or promote products derived from
  * this software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
  * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
  * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  * ========================================================================
  * PROJECT: OpenTracker
  * ======================================================================== */
 /* ======================================================================= */

#ifndef _GOGOSINKSOURCE_H
#define _GOGOSINKSOURCE_H

#include "../OpenTracker.h"
#include "../common/ConsoleSource.h"

#ifdef USE_GOGO

// assign nodekit buttons
#define OTCOM_NONE                              0
#define OTCOM_RESETPOSITION             1
#define OTCOM_RESETROTATION             2
#define OTCOM_TOGGLE_ROTATECAMERAAXIS  3




namespace ot {

class OPENTRACKER_API GoGoSinkSource : public Node
{
// Members
public: 
    Event event;

// Methods
public:
    GoGoSinkSource() : Node()
    {
                for(int i(0);i<3;i++) 
                {
                        viewerLocationPos[i] = 0.f;
                        relativeInputPos[i] = 0.f;
                        tmpEventPos[i] = 0.f;
                        viewerLocationOri[i] = 0.f;
                        relativeInputOri[i] = 0.f;
                        tmpEventOri[i] = 0.f;
                }
                viewerLocationOri[3] = 1.f;
                relativeInputOri[3] = 1.f;
                tmpEventOri[3] = 1.f;

                tmpEventCursorDistance=0.f;
                tmpEventScalingFactor=0.f;

                // default values
                tWeightDefault = 0.5f;
                rWeightDefault = 0.1f;

                tWeight = tWeightDefault;
                rWeight = rWeightDefault;

                nlDistance = 10;
                gogok = 1.0f;  //1.0f/6.0f;
                //scale = 1.0f;

                useAbsRotation = true;
        };
        
    virtual int isEventGenerator()
    {
        return 1;
    }

    void push();

virtual void onEventGenerated( Event& event, Node& generator);

protected:
        // SpaceMouse Cursor-specific variables
        bool useAbsRotation;

        // Incoming events providing data for calculations
        float viewerLocationPos[3];
        float relativeInputPos[3];
        float viewerLocationOri[4]; 
        float relativeInputOri[4];
        unsigned short relativeInputBut, gogoDeviceKitBut;

        // This Event holds the result of the calculation of
        // current cursor position and is sent to the observers
    float tmpEventPos[3];
        float tmpEventOri[4];
        unsigned short tmpEventBut;
        float tmpEventCursorDistance, tmpEventScalingFactor;

        // A flag to indicate whether tmpEvent was changed during processing
    int changed;

        // old event type depricated???User Position
        //Event usrpos;
        
        // weights for translation and rotation
        float tWeightDefault, rWeightDefault;
        float tWeight, rWeight;

        // old depricated???
        bool extNode;

        // scaling factor
        //float scale;
        //float cursorDistance;

        // parameters for GoGo Interaction
        float nlDistance;                       // distance where non-linear movement starts
    float gogok;
        // scaling factor for nonlinear movement acceleration

        bool newEvent, newKitEvent;

        void computeNewLocation();
        void computeGoGoNodeKitEvent();

        friend class GoGoModule;

private:

        // indicates that a new event has arrived
        

};

}  // namespace ot

#endif //USE_GOGO

#endif //_GOGOSINKSOURCE_H

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