Using the Leap Visualizer

This article describes the Leap Visualizer application that lets you
view motion tracking data generated by the Leap Motion Controller.

Overview

The Visualizer application displays finger tip tracking data and is a
good way to get a feel for the data produced by the Leap. Start the
Visualizer from the menu on the Leap application icon on the Windows
Taskbar or Mac Finder bar.

Launch the Visualizer from the Leap app icon  
menu.

Now move your hands in the Leap Motion Controller’s field of view. You should see
your fingers represented as colored pens with trails following your
finger tip locations.

General controls

You can control the Visualizer with key commands. Press H twice to
display the available commands.

  • Esc — Quit the Visualizer.
  • H — Display the Visualizer framerate, Leap framerate, and key
    commands.
  • S — Switch between windowed mode and fullscreen.
  • Z — Flip the positive and negative directions of the z-axis.
  • G — Toggle the coordinate grid.
  • J — Switch between black and blue or white and gray (Jony mode).
  • I — Toggle interpolation of finger tip trails.
  • Y — Toggle artistic drawing of finger tip trails.
  • L — Display tracking info, including labeled axes, field of view,
    finger tip coordinates, and processing latency.
  • T — Toggles the display of fingers and tools between lines and
    cylinders. In cylinder mode, the cylinders are colored differently
    depending on whether the Leap recognizes the object as a tool or a
    finger. In line mode, a color is randomly assigned to each object
    when it is first recognized.
  • N — Cycles the display of palm tracking data between fingers only,
    palm plane, and hand ball modes.
  • O — Toggles the display of gesture indicators.
  • P — Pauses and unpauses the visualization display.
  • B — Displays screen location visuals. These visuals include a
    frame showing the computed area of the desktop and the projection of
    fingers and tools to the point where they intersect the screen. Set
    the location of a screen using the Leap application Settings window:
    see Leap Application Settings.
  • D — Mirrors the screen contents in the visualizer window (screen
    location visuals must also be displayed for the mirrored monitor to
    be shown).

Camera controls

The Visualizer displays finger tip trails in 3D space. You can control
the camera with the following keys:

  • = — Zoom the camera in.
  • - — Zoom the camera out.
  • V — Cycle the camera between the orthographic, front, top, and
    side views.
  • A — Automatically pan the camera to keep tracked fingers in view
    when they move near the edges.
  • C — Recenter the camera to place tracked fingers in the center of
    the view.
  • Left and right arrows — Start and stop view rotation in orthographic
    view.
  • Mouse click and drag — Rotate the camera in orthographic view.
  • Mouse right-click and drag — Pan the camera.

Tracking information

You can view additional information about the tracking data by pressing
the L key.

The Leap Visualizer showing additional tracking  
data.

In this mode:

  • Labeled axes are added to the grid, with scale measured in
    millimeters.
  • An inverted pyramid indicates the approximate field of view of the
    Leap Motion Controller.
  • The x, y, z coordinates of each detected finger tip’s position are
    shown, in millimeters.
  • A graph shows the amount of processing latency experienced over
    time, in milliseconds.

Copyright © 2012-2013 Leap Motion, Inc. All rights reserved.

Leap Motion proprietary and confidential. Not for distribution. Use
subject to the terms of the Leap Motion SDK Agreement available at
https://developer.leapmotion.com/sdk_agreement, or another agreement
between Leap Motion and you, your company or other organization.