devices/deviceinput/ordeviceinput_hardware.cxx

/***************************************************************************************
 Autodesk(R) Open Reality(R) Samples
 
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***************************************************************************************/

//--- Class declaration
#include "ordeviceinput_hardware.h"

/************************************************
 *  Constructor.
 ************************************************/
ORDeviceInputHardware::ORDeviceInputHardware() :
    mChannelCount( 0 ),
    mCounter( 0 )
{
}


/************************************************
 *  Destructor.
 ************************************************/
ORDeviceInputHardware::~ORDeviceInputHardware()
{
}


/************************************************
 *  Open device communications.
 ************************************************/
bool ORDeviceInputHardware::Open()
{
    return true;
}


/************************************************
 *  Get device setup information.
 ************************************************/
bool ORDeviceInputHardware::GetSetupInfo()
{
    mChannelCount   = 4;
    mChannelName[0] = "ParentA";
    mChannelName[1] = "ChildA";
    mChannelName[2] = "ParentB";
    mChannelName[3] = "ChildB";
    return true;
}


/************************************************
 *  Close device communications.
 ************************************************/
bool ORDeviceInputHardware::Close()
{
    return true;
}


/************************************************
 *  Fetch a data packet from the device.
 ************************************************/
bool ORDeviceInputHardware::FetchDataPacket(FBTime &pTime)
{
    //Returns true if a new data packet is ready
    // TODO: insert time stamp from data packet
    pTime = mSystem.SystemTime;

    // TODO: Replace this bogus code with real NON-BLOCKING TCP, UDP or serial calls
    // to your data server.
    PollData();

    // As soon as enough bytes have been read to have data for all makers,
    // return immediately, even if another data packer is waiting
    // This function is nested in a while loop and will be called immediately
    // as soon as the current data frame is processed.

    // TODO: mCounter is a bogus variable there to simulate a time-reference
    if(mCounter%2)
    {
        return true; // data for all elements of mChannelData[] has been found.
    }
    else
    {
        return false; // incomplete data packet has been read.
    }
}


/************************************************
 *  Poll device.
 *  Device should get itself to send more data.
 ************************************************/
bool ORDeviceInputHardware::PollData()
{
    //Rotational data is in Euler angles in degrees
    //the order is: XYZ. In other words:
    //- rotation around the 'X' axis
    //- followed by a rotation around the 'Y' axis
    //- followed by a rotation around the 'Z' axis

    mCounter++;
    float length  = 50.0;

    // ParentA
    mChannelData[PARENT_A][DATA_TX] = 0.0;
    mChannelData[PARENT_A][DATA_TY] = 0.0;
    mChannelData[PARENT_A][DATA_TZ] = 0.0;
    mChannelData[PARENT_A][DATA_RX] = 0.0;
    mChannelData[PARENT_A][DATA_RY] = 0.0;
    mChannelData[PARENT_A][DATA_RZ] = (double)(-mCounter%360);

    // ChildA
    mChannelData[CHILD_A][DATA_TX] = length;
    mChannelData[CHILD_A][DATA_TY] = 0.0;
    mChannelData[CHILD_A][DATA_TZ] = 0.0;
    mChannelData[CHILD_A][DATA_RX] = 0.0;
    mChannelData[CHILD_A][DATA_RY] = 0.0;
    mChannelData[CHILD_A][DATA_RZ] = 0.0;

    // ParentB
    mChannelData[PARENT_B][DATA_TX] = 0.0;
    mChannelData[PARENT_B][DATA_TY] = 0.0;
    mChannelData[PARENT_B][DATA_TZ] = 0.0;
    mChannelData[PARENT_B][DATA_RX] = 0.0;
    mChannelData[PARENT_B][DATA_RY] = 0.0;
    mChannelData[PARENT_B][DATA_RZ] = (double)((-mCounter/12)%360);


    // ChildB
    mChannelData[CHILD_B][DATA_TX] = 0.5*length;
    mChannelData[CHILD_B][DATA_TY] = 0.0;
    mChannelData[CHILD_B][DATA_TZ] = 0.0;
    mChannelData[CHILD_B][DATA_RX] = 0.0;
    mChannelData[CHILD_B][DATA_RY] = 0.0;
    mChannelData[CHILD_B][DATA_RZ] = 0.0;

    return true;
}

/************************************************
 *  Start data streaming from device.
 ************************************************/
bool ORDeviceInputHardware::StartDataStream()
{
    return true;
}

/************************************************
 *  Stop data streaming from device.
 ************************************************/
bool ORDeviceInputHardware::StopDataStream()
{
    return true;
}