https://github.com/unitytechnologies/ar_industrial
AR Foundation project showing off functionality for HoloLens 2 and mobile
https://github.com/unitytechnologies/ar_industrial
Last synced: 29 days ago
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AR Foundation project showing off functionality for HoloLens 2 and mobile
- Host: GitHub
- URL: https://github.com/unitytechnologies/ar_industrial
- Owner: UnityTechnologies
- License: mit
- Created: 2020-05-11T05:02:14.000Z (almost 6 years ago)
- Default Branch: master
- Last Pushed: 2020-06-15T01:24:49.000Z (over 5 years ago)
- Last Synced: 2025-05-13T14:33:32.286Z (10 months ago)
- Language: ShaderLab
- Size: 20.4 MB
- Stars: 12
- Watchers: 5
- Forks: 5
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# AR Industrial Demo
This is a multi-platform demo that shows functionality between HoloLens 2 and mobile AR (ARKit / ARCore). Originally presented at the Microsoft Mixed Reality Developer Day 2020. Full talk recording available [here](https://channel9.msdn.com/Shows/Docs-Mixed-Reality/Getting-started-with-the-HoloLens-2-and-Unity)
It uses Unity's [AR Foundation](https://docs.unity3d.com/Packages/com.unity.xr.arfoundation@3.1/manual/index.html) to enable tracking and rendering on the supported platforms. It uses [Universal Render Pipeline](https://docs.unity3d.com/Packages/com.unity.render-pipelines.universal@8.1/manual/index.html) to hit performant framerates on all platforms.
## HoloLens 2 support
The input for HoloLens 2 uses the native WindowsMR API's to recognize the pinch gesture and native XR API's to track the hands positions and rotations.
### Gestures
Listen for the air tap
```
m_MRGestures.onTappedChanged += OnTapped;
```
Check if the hand device is valid and set the particle effect to the device location and play it, call CallActivate based on the hand position
```
void OnTapped(WindowsMRTappedGestureEvent eventArgs)
{
if (m_LeftHandDevice.isValid)
{
m_TapParticleSystem.transform.position = m_LeftHandPos * m_ScaleMod;
m_TapParticleSystem.Play();
CallActivate(m_LeftHandPos * m_ScaleMod);
}
}
```
### Hand Tracking
Get a list of devices based on characteristics
```
m_RightHandDevices = new List();
m_LeftHandDevices = new List();
InputDevices.GetDevicesWithCharacteristics(InputDeviceCharacteristics.Right, m_RightHandDevices);
InputDevices.GetDevicesWithCharacteristics(InputDeviceCharacteristics.Left, m_LeftHandDevices);
```
Assign the devices and enable the hand visual *we are assuming there to only be one device for left and right hand*
```
if(m_RightHandDevices.Count > 0)
{
m_RightHandDevice = m_RightHandDevices[0];
m_RightHandVisual.gameObject.SetActive(true);
}
if(m_LeftHandDevices.Count > 0)
{
m_LeftHandDevice = m_LeftHandDevices[0];
m_LeftHandVisual.gameObject.SetActive(true);
}
```
Subscribe to device connected and disconnected events
```
InputDevices.deviceConnected += DeviceConnected;
InputDevices.deviceDisconnected += DeviceDisconnected;
```
On connected event, check the device characters has the `.Right` or `.Left` and assign the device
```
void DeviceConnected(InputDevice device)
{
if((device.characteristics & InputDeviceCharacteristics.Right) != 0)
{
m_RightHandDevice = device;
m_RightHandVisual.gameObject.SetActive(true);
}
}
```
## Mobile AR Support
Uses native `Input` class for determining when the user touches the device
Use a reference to the camera to do a raycast based on the users touch position and call CallActivate()
```
if (Input.touchCount > 0)
{
Touch touch = Input.GetTouch(0);
if (touch.phase == TouchPhase.Began)
{
m_CamerRay = Camera.main.ScreenPointToRay(touch.position);
if (Physics.Raycast(m_CamerRay, out m_Hit))
{
m_TapParticleSystem.transform.position = m_Hit.point;
m_TapParticleSystem.Play();
CallActivate(m_Hit.point);
}
}
}
```