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VrpnAnalogDevice Class

A class for the VRPN plugin add-on that allows receiving data about input devices sticks (for example, game-pad sticks).

See Also

VrpnAnalogDevice Class

Members


VrpnAnalogDevice (string name)

Constructor.

Arguments

  • string name - Path to the device in the format device_name@server_address.

string getAnalogCallback ()

Returns a name of the world script callback function that receives data about input device sticks. The callback function should be defined in the world script and receive 1 argument - an instance of the VrpnAnalogDevice class.
Source code (UnigineScript)
void callback_func(VrpnAnalogDevice device) {
    // function logic
} 
				

Return value

Callback function name.

double getChannel (int channel)

Returns data received by the analog stick with the given number.
Notice
If the given stick haven't received data, the engine assertion will occur.

Arguments

  • int channel - Analog stick number in range [0;number_of_sticks - 1].

Return value

Returns data received by the analog stick with the given number.

int getNumChannels ()

Returns the number of analog sticks that have received data.

Return value

The number of analog sticks that have received data. If no sticks have received data, 0 will be returned.

void setAnalogCallback (string name)

Sets the world script callback function that receives data about input device sticks.
Notice
The callback function should be defined in the world script and receive 1 argument - an instance of the VrpnAnalogDevice class.
Source code (UnigineScript)
void callback_func(VrpnAnalogDevice device) {
    // function logic
} 
				

Arguments

  • string name - Callback function name.

Examples

Source code (UnigineScript)
VrpnAnalogDevice vrpn_analog;

int init() {
	// create an instance of VrpnAnalogDevice
    vrpn_analog = new VrpnAnalogDevice("device_name@server_addr");
	// set a callback
    vrpn_analog.setAnalogCallback("analog_callback");
}

int shutdown() {
    delete vrpn_analog;
    return 1;
}

int update() {
    vrpn_analog.update();
    return 1;
}

// a callback function
void analog_callback(VrpnAnalogDevice device) {
    forloop(int i = 0; device.getNumChannels()) {
        log.message("Device analog channel %d: %lf\n",i,device.getChannel(i));
    }
} 
				

void update ()

Updates the internal state of the device and receives input data.
Notice
This function should be called each frame.
Last update: 2017-07-03