Detecting platform capabilities
A common question asked of the MRTK involves knowing which specific device (ex: Microsoft HoloLens 2) is being used to run an application. Identifying the exact hardware can be challenging on different platforms. Instead, the MRTK provides a way to identify specific capabilities at runtime, (e.g. if the current device endpoint supports articulated hands).
Capabilities
The Mixed Reality Toolkit provides the MixedRealityCapability
enumeration, which defines a set of capabilities for which an application can query at runtime.
Input system capabilities
The default MRTK Input System supports querying the following capabilities:
| Capability | Description |
|---|---|
| ArticulatedHand | Articulated hand input |
| EyeTracking | Eye gaze targeting |
| GGVHand | Gaze-Gesture-Voice hand input |
| MotionController | Motion controller input |
| VoiceCommand | Voice commands using app defined keywords |
| VoiceDictation | Voice to text dictation |
The example code below checks to see if the input system has loaded a data provider with support for articulated hands.
bool supportsArticulatedHands = false;
IMixedRealityCapabilityCheck capabilityCheck = CoreServices.InputSystem as IMixedRealityCapabilityCheck;
if (capabilityCheck != null)
{
supportsArticulatedHands = capabilityCheck.CheckCapability(MixedRealityCapability.ArticulatedHand);
}
Spatial awareness capabilities
The default MRTK Spatial Awareness system supports querying the following capabilities:
| Capability | Description |
|---|---|
| SpatialAwarenessMesh | Spatial meshes |
| SpatialAwarenessPlane | Spatial planes |
| SpatialAwarenessPoint | Spatial points |
This example checks to see if the spatial awareness system has loaded a data provider with support for spatial meshes.
bool supportsSpatialMesh = false;
IMixedRealityCapabilityCheck capabilityCheck = CoreServices.SpatialAwarenessSystem as IMixedRealityCapabilityCheck;
if (capabilityCheck != null)
{
supportsSpatialMesh = capabilityCheck.CheckCapability(MixedRealityCapability.SpatialAwarenessMesh);
}