This wiki is intended for older versions of Motive. For the latest documentation, please refer to
docs.optitrack.com

Gizmo Tool: Translate, Rotate, and Scale

Main page → Gizmo Tool: Translate, Rotate, and Scale

Page Scope

This page provides instructions on how to utilize the Gizmo tool for modifying asset definitions (rigid bodies and skeletons) on the 3D Perspective View of Motive


Warning2.png

Edit Mode: As of Motive 3.0, asset editing can only be performed in Edit mode

Warning2.png

Solved Data: In order to edit asset definitions from a recorded Take, corresponding Solved Data must be removed before making the edit, and then recalculated.

Overview


The gizmo tools allow users to make modifications on reconstructed 3D markers, rigid bodies, or skeletons for both real-time and post-processing of tracking data. This page provides instructions on how to utilize the gizmo tools.

  • GizmoTools 30.png


Rigid Body Assets



Using the gizmo tools from the perspective view options to easily modify the position and orientation of rigid body pivot points. You can translate and rotate rigid body pivot, assign pivot to a specific marker, and/or assign pivot to a mid-point among selected markers.

  • Select Tool (Hotkey: Q): Select tool for normal operations.
  • Translate Tool (Hotkey: W): Translate tool for moving the rigid body pivot point.
  • Rotate Tool (Hotkey: E): Rotate tool for reorienting the rigid body coordinate axis.
  • Scale Tool (Hotkey: R): Scale tool for resizing the rigid body pivot point.


Info2.png

Precise Position/Orientation: When translating or rotating the rigid body, you can CTRL + select a 3D reconstruction from the scene to precisely position the pivot point, or align a coordinate axis, directly on, or towards, the selected marker. Multiple reconstructions can be also be selected and their geometrical center (midpoint) will be used as the target reference.

Rotation ReferencedMarkers.png

Translation

Using the translation tool to place the pivot point at different locations.

Rotation

Using the rotation tool to rotate the rigid body coordinate axis. The orientation is set to true for monitoring the orientation.

Rescale

Using the rotation tool to scale the size of rigid body pivot point.

Skeleton Assets


You can utilize the gizmo tools to modify skeleton bone lengths, joint orientations, or scale the spacing of the markers. Translating and rotating the skeleton assets will change how skeleton bone is positioned and oriented with respect to the tracked markers, and thus, any changes in the skeleton definition will affect the realistic representation of the human movement.


Translation

Using the translation tool to translate skeleton segments

Rotation

Using the rotation tool to rotate skeleton segments

Scale

The scale tool modifies the size of selected skeleton segments.
Using the scale tool to resize skeleton segments

Reconstructed 3D Markers


The gizmo tools can also be used to edit positions of reconstructed markers.In order to do this, you must be working reconstructed 3D data in post-processing. In live-tracking or 2D mode doing live-reconstruction, marker positions are reconstructed frame-by-frame and it cannot be modified.

Translate

Using the translate tool, 3D positions of reconstructed markers can be modified. Simply click on the markers, turn on the translate tool (Hotkey: W), and move the markers
GizmoTranslate 3DMarker 111.png

Rotate

Using the rotate tool, 3D positions of a group of markers can be rotated at its center. Simply select a group of markers, turn on the rotate tool (Hotkey: E), and rotate them.
GizmoRotate 3DMarker 111.png

Scale

Using the scale tool, 3D spacing of a group of makers can be scaled. Simply select a group of markers, turn on the scale tool (Hotkey: R) and scale their spacing.
GizmoScale 3DMarker 111.png

Cameras

Cameras can be modified using the gizmo tool if the Settings Window > General > Calibration > "Editable in 3D View" property is enabled. Without this property turned on the gizmo tool will not activate when a camera is selected to avoid accidentally changing a calibration. The process for using the gizmo tool to fix a misaligned camera is as follows:

  1. Select the camera you wish to fix, then view from that camera (Hotkey: 3).
  2. Select either the Translate or Rotate gizmo tool (Hotkey: W or E).
  3. Use the red diamond visual to align the unlabeled rays roughly onto their associated markers.
  4. Right lock then choose "Correct Camera Position/Orientation". This will perform a calculation to place the camera more accurately.
  5. Turn on Continuous Calibration if not already done. Continuous calibration should finish aligning the camera into the correct location.
  • Misaligned camera.
  • Mostly aligned camera.
  • Context option for correcting the camera position.