Pre-10.0 Engine API documentation for Unity

August 2, 2021 - 8:12am #1


Please find the Unity API documentation for the pre-10.0 Engine release (v9.8) here:


Vuforia Engine Support

Topic locked

Unity Particle System Interatction

January 13, 2023 - 8:43am #1

Hello, is it possible for Unity Particles to interact with detected planes in an AR application. I have a Particle System in Unity that animates water being sprayed in a circular pattern and I want the particles to appear on the floor (plane) in AR. I haven't discovered a way to achieve this and it would be amazing if that's a possibility. 

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IFC Prefab does not move with Target

Unity Editor
January 10, 2023 - 8:49am #1

I am creating a HoloLens application in which I track an IFC model that I imported from the Unity asset store using the IFC importer with an image target. However, the prefab does not move with me when I move the target. I have also added a cube for testing. This moved with the target when I moved it. I also tried to detach the elements from the prefab. Unfortunately, this did not work either.
What could be the reason for this?

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GroundPlane tracking not working on Surface Go 3

Unity Editor
September 7, 2022 - 10:47pm #1
Topic solved


Vuforia Ground plane tracking is not working on the Surface Go 3.

when I run the app It says "Ground plane feature require anchors to be available on the current platform".

Does Go 3 supports ground plane tracking?

ImageTarget feature works fine and as expected.


Environment :

Unity 2021.2.16f1

Vuforia 10.9.3


Any help is appreciated.

Topic locked

scaling objects and orientation

Unity Editor
August 25, 2022 - 2:16am #1


when I place .stl files or .ply files via the model creator in Unity, the orientation is sometimes different and the scaling is 0.1 / 0.001 respectively.

Even replacing by hand or rescaling leads to improper orientation. 

What is the optimal workflow here? How to set the orientation best in the model creator, stricly on the base plate??

There is even a diffenrence between .stl and .ply import ? (see attached picture)

Thx for help


Topic locked

How to select model targets in unity with c# script

July 26, 2022 - 8:05pm #1
Topic solved

Since I have imported multi database, I know that I can switch the database in unity editor Inspector panel.

But I want to let user to decide which one they want to detect.

So how can I switch the database in C# script

Topic locked

How do I make the animation start from the beginning when I move away from the image target and back

Unity Editor
May 26, 2022 - 9:06am #1


I am sort of new to Unity and Vuforia have been pretty good about figuring out my issues on my own, but this one has me stumped.

I am using Vuforia for my AR Camera and Image Target in Unity and how do I make the animation start from the beginning when I move away from the image target and back again?

When I move away from the image target and move back, the animation starts from where it was when I moved away from the image target.


Topic locked

Failed to create ImageTargetObserver: DATABASE_LOAD_ERROR

Apple XCode
May 25, 2022 - 9:26pm #1

Xcode 13.2

MacOS Big Sur 11.6.5

IOS Device: Phone 6 (12.5.5)

Unity version: 2020.3.26f1

Vuforia Engine AR: 10.4.4


It's working ok when I directly build and run from Unity Editor

But currently we have the requirement for it to be plugged into IOS native app


I managed to launch the scene following this article


Topic locked

Rotation, parent as camera, and forward vector with an AR camera

Unity Editor
May 13, 2022 - 7:35am #1

Hello to all,
I'm developing an phone app with the Vuforia package for AR in Unity.
I want to make a game objet follow a calculated rotation from touch input in addition to the camera rotation, so that it acts like a cursor to interact with the scene objects, following the camera.

I tried two setups using the midair placement components with the world origin set to the midair stage :

Topic locked

Multiple BackCameras / external cam support

Unity Editor
May 7, 2022 - 3:58am #1

Can you switch between multiple rear cameras

Like a wide-angle camera added to the IPAD PRO 2021

Can I switch to this wide-angle camera

Topic locked