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VrpnButtonDevice Class

A class for the VRPN Plugin that allows receiving data about states of input device buttons.

See Also#

  • Article on VRPN Plugin
  • A set of UnigineScript API samples located in the <UnigineSDK>/data/samples/plugins/ folder:
    • vrpn_client_00
    • vrpn_client_01

VrpnButtonDevice Class

Members


void setButtonCallback ( string name ) #

Sets the world script callback function that receives data about input device buttons.
Notice
The callback function should be defined in the world script and receive 2 arguments - a button number and state.
Source code (UnigineScript)
void callback_func(int button,int state) {
    // function logic
}

Arguments

  • string name - Callback function name.

Examples

Source code (UnigineScript)
VrpnButtonDevice vrpn_button;

int init() {
	// create an instance of VrpnButtonDevice
    vrpn_button = new VrpnButtonDevice("device_name@server_addr");
	// set a callback
    vrpn_button.setButtonCallback("button_callback");
    return 1;
}

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

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

// a callback function
void button_callback(int button,int state) {
    log.message("Device button %d: %d\n",button,state);
}

string getButtonCallback ( ) #

Returns a name of the world script callback function that receives data about input device buttons. The callback function should be defined in the world script and receive 2 arguments - a button number and state.
Source code (UnigineScript)
void callback_func(int button,int state) {
    // function logic
}

Return value

Callback function name.

void update ( ) #

Updates the internal state of the device and receives input data.
Notice
This function should be called each frame.

VrpnButtonDevice ( string name ) #

Constructor.

Arguments

  • string name - Path to the device in the format device_name@server_address.
Last update: 2019-08-16