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deviceMouse.cpp

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/********************************************************************
Description: mouse plug-in
part of the 3Dsia project
created: StonedBones, 24.4.2000

History:
    date,   name,       changes,                    in funtion
    080500  StonedBones created source

********************************************************************/



#include "deviceMouse.h"

#include <string.h>
#include <iostream>
#include <iomanip>

bool    isPresent;
int     intAxes;
int     intButtons;
long    intAxis[MAXAXES];
bool    intButton[MAXBUTTONS];
string  intName;
int     intX, intY;

/*...................................................................
Description: returns the actual plugin
Args: <none>
Returns: plug-in pointer
Created: StonedBones, 26.2.2000
[ToDo:]
[Comments:]
Changes:
-------------------------------------------------------------------*/

extern "C" {DevicePlugIn* GetDevicePlugIn (void); };

DevicePlugIn* GetDevicePlugIn () {
    return &inputPlugIn;
};

/*...................................................................
Description: opens a joystick device
Args: char* device: device-filename
Returns: true on succes
Created: StonedBones, 26.2.2000
[ToDo:]
[Comments:]
Changes:
-------------------------------------------------------------------*/

bool openDevice () {
    intAxes   =2;
    intButtons=3;
    intName   ="glut-mouse";
    isPresent =true;

    for (int i=0; i < intAxes; i++) {
        intAxis[i]=0;
    };
    for (int i=0; i < intButtons; i++) {
        intButton[i]=false;
    };

    glutMouseFunc (mouse);
    glutPassiveMotionFunc (motion);

    update ();

    return true;
};

/*...................................................................
Description: closes device if open
Args: <none>
Returns: <none>
Created: StonedBones, 26.2.2000
[ToDo:]
[Comments:]
Changes:
-------------------------------------------------------------------*/

void closeDevice () {
    return;
};

/*...................................................................
Description: updates axis(int nr) and buttonPressed (int nr)
Args:  <none>
Returns: true on success
Created: StonedBones, 26.2.2000
[ToDo:]
[Comments:]
Changes:
-------------------------------------------------------------------*/

bool update () {
    if (isPresent) {
        int WindowHeight = glutGet ((GLenum)GLUT_WINDOW_HEIGHT);
        int WindowWidth  = glutGet ((GLenum)GLUT_WINDOW_WIDTH);

        intAxis[0]= ( ( WindowHeight  / 2) - intY) * 100;
        intAxis[1]= (  ( WindowWidth / 2) - intX) * 100;

        if ( intY > ( WindowHeight - 1 ) )
            {
            intY = WindowHeight - 1;
            glutWarpPointer ( intX, intY );
            }
        else if ( intY < 0 )
            {
            intY = 1;
            glutWarpPointer ( intX, intY );
            }

        if ( intX > ( WindowWidth - 1 ) )
            {
            intX = WindowWidth - 1;
            glutWarpPointer ( intX, intY );
            }
        else if ( intX < 0 )
            {
            intX = 1;
            glutWarpPointer ( intX, intY );
            }

        return true;
    } else return false;
};

/*...................................................................
Description: returns the joystick name (given by kernel-module)
Args: <none>
Returns: NULL if no joystick was opened
Created: StonedBones, 26.2.2000
[ToDo:]
[Comments:]
Changes:
-------------------------------------------------------------------*/

string name () {
    if (isPresent) {
        return intName;
    } else return "none found";
};

/*...................................................................
Description: returns the amount of axes
Args: <none>
Returns: 0 if no joystick present
Created: StonedBones, 26.2.2000
[ToDo:]
[Comments:]
Changes:
-------------------------------------------------------------------*/

int axes () {
    if (isPresent) {
        return intAxes;
    } else return 0;
};

/*...................................................................
Description: returns the amount of buttons
Args: <none>
Returns: 0 if no joystick present
Created: StonedBones, 26.2.2000
[ToDo:]
[Comments:]
Changes:
-------------------------------------------------------------------*/

int buttons () {
    if (isPresent) {
        return intButtons;
    } else return 0;
};

/*...................................................................
Description: returns the value of axis 'nr'
Args: int nr: axis-number
Returns: axis-value
Created: StonedBones, 26.2.2000
[ToDo:]
[Comments:]
Changes:
-------------------------------------------------------------------*/

long axis (int nr) {
    if (isPresent) {
        if (nr < intAxes) {
            return (intAxis[nr]);
        } else {
            return 0;
        };
    } else {
        return 0;
    };
};

/*...................................................................
Description: returns if a certain button is pressed
Args: int nr: button-number
Returns: true if pressed
Created: StonedBones, 26.2.2000
[ToDo:]
[Comments:]
Changes:
-------------------------------------------------------------------*/

bool buttonPressed (int nr) {
    if (isPresent) {
    if (nr < intButtons) {
        return intButton[nr];
    } else {
        return false;
    };
    } else {
        return false;
    };
};


void mouse (int button, int state, int x, int y) {
    if (state == GLUT_DOWN) {
        intButton[button]=true;
    } else {
        intButton[button]=false;
    };
};

void motion (int x, int y) {
    intX = x;
    intY = y;
};

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