calculate distance to objects

[FirstSanny]

If we detected an object, how can we calculate the distance to it? We need these informations that we can walk to that point.

[Ju1yy]

If we register our targets, we can use
void ALTrackerProxy::track(const std::string& TargetName)
to track our target. And with
AL::ALValue ALTrackerProxy::getRelativePosition()
I think we can read the data from tracking. The API says it returns
Final goal of the tracking: [coordX, coordY, coordWz, thresholdX, thresholdY, thresholdWz].
But no idea what this coordWZ and thresholdWz is?!

This can also be done with
std::vector ALTrackerProxy::getTargetPosition(const int& Frame)
It returns an (x,y,z) vector of the target position in 3D