PVector zAxis = new PVector();

PVector up         = new PVector();

PVector objToCamera = new PVector();

PVector objectToCameraProjection                   = new PVector();

PVector lookAt = new PVector(0, 0, 1);

float angle;

public void rotateToCamera(PGraphics _buffer, PVector objectPosition, PVector cameraPosition)

{

_buffer.pushMatrix();

objectToCameraProjection.x = cameraPosition.x - objectPosition.x;

objectToCameraProjection.y = 0;

objectToCameraProjection.z = cameraPosition.z - objectPosition.z;

objectToCameraProjection.normalize();

up = lookAt.cross(objectToCameraProjection);

angle = PVector.dot(lookAt, objectToCameraProjection);

if ((angle < 0.9999f) && (angle > -0.9999f)) {

// _buffer.rotate(angle, up.x, up.y, up.z);

_buffer.rotate(parent.acos(angle) * 180 / parent.PI, up.x, up.y, up.z);

}

objToCamera.x = cameraPosition.x - objectPosition.x;

objToCamera.y = cameraPosition.y - objectPosition.y;

objToCamera.z = cameraPosition.z - objectPosition.z;

objToCamera.normalize();

angle = PVector.dot(objectToCameraProjection, objToCamera);

// parent.println(parent.acos(angle) * 180 / parent.PI);

if ((angle < 2f) && (angle > -2f)) {

if (objToCamera.y < 0) {

_buffer.rotate(parent.acos(angle) * 180 / parent.PI, 1, 0, 0);

} else {

_buffer.rotate(parent.acos(angle) * 180 / parent.PI, -1, 0, 0);

}

}

}

public void updateController() {

for (Controller controller : deck_controllers) {

if (controller.getClass().getSimpleName().equalsIgnoreCase("Slider")) {

if (parameters.containsKey(controller.getLabel())) {

Parameter p = (Parameter) parameters.get(controller.getLabel());

if (controller.getValue() != p.getFloat()) {

controller.setValue(p.getInt());

} else {

PApplet.println("not changed");

}

}

}

}

for (Flight flight : flights.values()) {

JSONArray flightID = root.optJSONArray(flight.flightId);

if (flightID != null) {

try {

// Get the "planeLat, planeLong" value from the

// flightID

DateTime now = new DateTime();

float planeLat = (float) flightID.optDouble(1);

float planeLong = (float) flightID.getDouble(2);

String planeOrigin = (String) flightID.optString(11);

String planeDestination = (String) flightID.optString(12);

TimeLocation timeLocation = new TimeLocation(

new Location(planeLat, planeLong), now);

flight.addTimeLocation(timeLocation);

flight.setOrigin(planeOrigin);

flight.setDestination(planeDestination);

// Print the coordinates

// println("Lat: " + planeLat + " Long: " +

// planeLong);

// println(planeLat);

println(planeOrigin + " " + planeDestination );

} catch (JSONException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

}