// Process incoming events
static int callback(int device, Finger *data, int nFingers, double timestamp, int frame)
{
if (!running || !sampling_interval_passed()) {
return 0;
}
tuio_frame_begin();
std::set<int> fingers;
// Process incoming events
int i;
for (i=0; i<nFingers; i++) {
Finger *f = &data[i];
int id = f->identifier;
float x = f->normalized.pos.x;
float y = 1.0f - f->normalized.pos.y; // reverse y axis
float size = f->size;
if (EXISTS(currentFingers, id)) {
// update
touch_update(id, x, y, size);
}
else {
// add
touch_add(id, x, y, size);
}
fingers.insert(id);
}
// Remove old events
std::set<int>::iterator iter;
FOREACH(currentFingers, iter) {
int id = *iter;
if (!EXISTS(fingers, id)) {
// remove
touch_remove(id);
}
}
// Process incoming events
static void callback(MTDeviceRef device, MTTouch touches[], size_t numTouches, double timestamp, size_t frame) {
if (!running || !sampling_interval_passed()) {
return;
}
tuio_frame_begin();
std::set<int> fingers;
// Process incoming events
int i;
for (i=0; i<numTouches; i++) {
MTTouch *f = &touches[i];
int id = f->pathIndex;
float x = f->normalizedVector.position.x;
float y = 1.0f - f->normalizedVector.position.y; // reverse y axis
if (EXISTS(currentFingers, id)) {
// update
touch_update(id, x, y);
}
else {
// add
touch_add(id, x, y);
}
fingers.insert(id);
}
// Remove old events
std::set<int>::iterator iter;
FOREACH(currentFingers, iter) {
int id = *iter;
if (!EXISTS(fingers, id)) {
// remove
touch_remove(id);
}
}