//Handle Leap Gesture processing.
//Trigger the corresponding effects in the particle field.
void GesturesDemo::processGestures() {
Leap::Frame frame = controller.frame();
if ( lastFrame == frame ) {
return;
}
Leap::GestureList gestures = lastFrame.isValid() ?
frame.gestures(lastFrame) :
frame.gestures();
lastFrame = frame;
size_t numGestures = gestures.count();
for (size_t i=0; i < numGestures; i++) {
if (gestures[i].type() == Leap::Gesture::TYPE_SCREEN_TAP) {
printf("screen screen tap gesture");
Leap::ScreenTapGesture tap = gestures[i];
ci::Vec3f tapLoc = normalizeCoords(tap.position());
field.Repel(tap.id(), ci::Vec2f(tapLoc.x, tapLoc.y), 3.0);
} else if (gestures[i].type() == Leap::Gesture::TYPE_KEY_TAP) {
printf("screen key tap gesture");
Leap::KeyTapGesture tap = gestures[i];
ci::Vec3f tapLoc = normalizeCoords(tap.position());
field.Repel(tap.id(), ci::Vec2f(tapLoc.x, tapLoc.y), -3.0);
} else if (gestures[i].type() == Leap::Gesture::TYPE_SWIPE) {
printf(" swipe gesture");
Leap::SwipeGesture swipe = gestures[i];
Leap::Vector diff = 0.004f*(swipe.position() - swipe.startPosition());
ci::Vec3f curSwipe(diff.x, -diff.y, diff.z);
field.Translate(swipe.id(), curSwipe);
} else if (gestures[i].type() == Leap::Gesture::TYPE_CIRCLE) {
printf(" circle gesture");
Leap::CircleGesture circle = gestures[i];
float progress = circle.progress();
if (progress >= 1.0f) {
ci::Vec3f center = normalizeCoords(circle.center());
ci::Vec3f normal(circle.normal().x, circle.normal().y, circle.normal().z);
double curAngle = 6.5;
if (normal.z < 0) {
curAngle *= -1;
}
field.Rotate(circle.id(), ci::Vec2f(center.x, center.y), circle.radius()/250, curAngle);
}
}
}
}
void QtLeapScreenTapGesture::update(const Leap::Gesture &gesture)
{
Leap::ScreenTapGesture tapGesture = static_cast<Leap::ScreenTapGesture>(gesture);
this->setId(tapGesture.id());
this->setState(gesture.state());
this->setDirection(QVector3D(tapGesture.direction().x,
tapGesture.direction().y,
tapGesture.direction().x));
this->setPosition(QVector3D(tapGesture.position().x,
tapGesture.position().y,
tapGesture.position().z));
this->setState(tapGesture.state());
}