public void GetFrameData(int frame, bool lastFrame)
{
//Vector3 position = DeviationRay();
//Vector3 position = motionAnchor.transform.position;
Vector3 position = PosByMarker();
ScreenPosData data = VPToScreenPoint(cam: arCamera, cam_w: camera_width, cam_h: camera_height, target: position, f: frame);
string json = JsonUtility.ToJson(data);
WriteData(json, lastFrame);
}
/// <summary>
/// returns a vector with normalized x, y values at a given frame:
/// (0, 0) -> bottom left
/// (1, 1) -> top right
/// z = distance to camera
/// </summary>
/// <param name="cam"></param> camera used for tracking
/// <param name="cam_w"></param> camera pixel width
/// <param name="cam_h"></param> camera pixel height
/// <param name="pos"></param> vector for screen pos calc
/// <param name="f"></param> frame
/// <returns></returns>
public static ScreenPosData VPToScreenPoint(Camera cam, float cam_w, float cam_h, Vector3 target, int f)
{
ScreenPosData data = new ScreenPosData();
var point = cam.WorldToScreenPoint(target);
//normalized vector
var tmpScreenPos = new Vector3(point.x / cam_w, point.y / cam_h, point.z);
data.frame = f;
data.screenPos = tmpScreenPos;
data.objPos = target;
return(data);
}
