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Motion inspector

by Chalouek-RGBit·Workflow

Images © Chalouek-RGBit. Used for product review; image policy.

Why we like it

Motion inspector earns its place in the blender_extensions library as a focused utility for animators who want observable data on how their motion behaves. Its acceleration and countergravity vectors replace guesswork about timing with values you can read directly.

What is Motion inspector?

Motion inspector is a motion-checking add-on for Blender that lets animators inspect F-Curves and animated object movement. Rather than guessing at what the interface shows, you can observe changes in the acceleration and speed of your curves and objects directly.

The add-on monitors the amount of force of movement through an acceleration vector, and checks the tilt of a character, aircraft or motorcycle via a countergravity vector. You can create correct freefall acceleration by minimising that countergravity vector, and check speed as you work. Version 0.2.9 added support for parented objects. Note that on frame references only static constraints, such as a path constraint, work properly on objects; the developer recommends an armature for full constraint support.

Motion inspector is compatible with Blender 4.2 LTS and newer, ships under the GNU General Public License v3.0 or later, and requires no special permissions. It sits within the blender_extensions library, and the developer's page tracks version history and reported issues.

Who is Motion inspector best for?

Motion inspector is best for blender animators who want to verify the acceleration, speed and tilt of their animated object movement instead of judging it by eye.

How much does Motion inspector cost?

Motion inspector is completely free to download and use.

Key features

  • Observe changes in the acceleration and speed of curves and objects
  • Monitor the amount of force of movement through an acceleration vector
  • Check the tilt of a character, aircraft or motorcycle via a countergravity vector
  • Create correct freefall acceleration by minimising the countergravity vector
  • Check speed as you inspect motion
  • Support for parented objects, added in version 0.2.9

Tags

#animation#F-Curves#motion analysis#acceleration#speed#Blender add-on#3D View

Frequently asked questions

Does Motion inspector work with Blender 4.2?

Motion inspector is compatible with Blender 4.2 LTS and newer, so it runs on that long-term-support build and later releases. The add-on is small, around a few kilobytes, and requires no special permissions to run. Version 0.2.9 is the current release listed by the developer. If you are on a Blender build older than 4.2, you would need to update first, since earlier versions fall outside the stated compatibility range. Check the developer's page for the latest version details before installing.

Does Motion inspector support parented objects?

Motion inspector added support for parented objects in version 0.2.9, so animated objects that inherit transforms from a parent can be inspected. One caveat the developer notes: on frame references, only static constraints such as a path constraint work properly on objects, and you should use an armature for full constraint support. Keep that limitation in mind when setting up rigs you plan to analyse. The parented-object support arrived with the 0.2.9 update listed on the developer's page.

How do static constraints affect Motion inspector's frame references?

Motion inspector notes that on frame references, only static constraints such as a path constraint will work properly on objects. For full constraint support, the developer recommends using an armature rather than relying on object-level constraints. This matters if your setup uses constraints outside that static case, since those may not report correctly through the tool's frame references. When accuracy matters, moving your constrained motion onto an armature is the suggested route. See the developer's page for further guidance on constraint handling.

Is Motion inspector free to use?

Motion inspector is listed as free in this catalog and is distributed under the GNU General Public License v3.0 or later. The add-on requires no special permissions in Blender. Because it ships under the GPL, you are free to use, study and modify the source in line with that license's terms. For the most current licensing conditions attached to the GPL, check the developer's page and repository. Refer there for the definitive licensing details before relying on it in a project.

How do I install Motion inspector in Blender?

Motion inspector installs by dragging and dropping the extension into Blender, or by downloading the add-on and using Install from Disk in Blender's preferences. At roughly a few kilobytes, the download is small and quick to add. Once installed, enable it like any other Blender add-on to reach its motion-inspection tools in the 3D View. The developer's page hosts the current 0.2.9 release and links to the issue tracker if you run into problems during setup. Follow Blender's standard extension install steps for your version.

Alternatives to Motion inspector

Also in Workflow for Blender.

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