//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 ofxLeapMotion::updateGestures(){
Leap::Frame frame = ourController->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++){
// screen tap gesture (forward poke / tap)
if(gestures[i].type() == Leap::Gesture::TYPE_SCREEN_TAP){
Leap::ScreenTapGesture tap = gestures[i];
screenTapPosition = getMappedofPoint(tap.position()); // screen tap gesture data = tap position
screenTapDirection = getofPoint(tap.direction()); // screen tap gesture data = tap direction
iGestures = 1;
}
// key tap gesture (down tap)
else if(gestures[i].type() == Leap::Gesture::TYPE_KEY_TAP){
Leap::KeyTapGesture tap = gestures[i];
keyTapPosition = getofPoint(tap.position()); // key tap gesture data = tap position
iGestures = 2;
}
// swipe gesture
else if(gestures[i].type() == Leap::Gesture::TYPE_SWIPE){
Leap::SwipeGesture swipe = gestures[i];
Leap::Vector diff = 0.04f*(swipe.position() - swipe.startPosition());
ofVec3f curSwipe(diff.x, -diff.y, diff.z);
// swipe left
if(curSwipe.x < -3 && curSwipe.x > -20){
iGestures = 4;
}
// swipe right
else if(curSwipe.x > 3 && curSwipe.x < 20){
iGestures = 3;
}
// swipe up
if(curSwipe.y < -3 && curSwipe.y > -20){
iGestures = 6;
}
// swipe down
else if(curSwipe.y > 3 && curSwipe.y < 20){
iGestures = 5;
}
// 3D swiping
// swipe forward
if(curSwipe.z < -5){
iGestures = 7;
}
// swipe back
else if(curSwipe.z > 5){
iGestures = 8;
}
// more swipe gesture data
swipeSpeed = swipe.speed(); // swipe speed in mm/s
swipeDurationSeconds = swipe.durationSeconds(); // swipe duration in seconds
swipeDurationMicros = swipe.duration(); // swipe duration in micros
swipe.position();
}
// circle gesture
else if(gestures[i].type() == Leap::Gesture::TYPE_CIRCLE){
Leap::CircleGesture circle = gestures[i];
circleProgress = circle.progress(); // circle progress
if(circleProgress >= 1.0f){
circleCenter = getMappedofPoint(circle.center()); // changed to global
circleNormal.set(circle.normal().x, circle.normal().y, circle.normal().z); // changed to global
double curAngle = 6.5;
if(circleNormal.z < 0){
curAngle *= -1;
}
if(curAngle < 0){
// clockwise rotation
iGestures = 10;
}
else{
// counter-clockwise rotation
iGestures = 9;
}
}
}
// kill gesture when done
// gestures 5 & 6 are always in a STATE_STOP so we exclude
if(gestures[i].type() != 5 && gestures[i].type() != 6){
if(gestures[i].state() == Leap::Gesture::STATE_STOP){
iGestures = 0;
}
}
}
}
