Looking Glass Documentation
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    • ๐Ÿ”ฎLooking Glass Go
      • โšกGet Started with Looking Glass Go
      • ๐Ÿ“ฑUsing the Go Mobile App
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      • ๐Ÿช„Default Playlist
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      • ๐Ÿ‘œAccessories
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      • โ“Common Troubleshooting Issues
    • ๐Ÿ”ฎLooking Glass 16" Light Field Displays
      • ๐Ÿช„Looking Glass 16" Light Field Display (Landscape)
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      • โ“Common Troubleshooting Issues
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      • ๐Ÿช„Looking Glass 32" Light Field Display (Landscape)
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      • โ“Common Troubleshooting Issues
    • ๐Ÿ”ฎLooking Glass 65" Light Field Display
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      • โšกGet Started with Looking Glass Portrait
      • ๐ŸŽ‡Demo Holograms
      • โ“Common Troubleshooting Issues
  • Software Tools
    • ๐Ÿ“šOverview
    • ๐ŸŒ‰Looking Glass Bridge
      • โœจUsing Looking Glass Bridge
      • ๐ŸชŸDisplay Settings on Windows
      • ๐ŸŽDisplay Settings on macOS
      • ๐ŸงDisplay Settings on Linux
      • ๐Ÿ‘ทTroubleshooting
    • ๐Ÿ“ฝ๏ธLooking Glass Studio
      • ๐Ÿ“šUsing Looking Glass Studio
      • RGB-D Photo / Video
      • Quilt Images / Video
      • iPhone Portrait Photos
      • Android Depth Photos
        • Samsung Portrait Mode
      • Light Field Photosets
      • Exporting Holograms
      • Troubleshooting
    • ๐ŸงŠLooking Glass Blocks
      • โœจConvert any image into a hologram
      • โฌ†๏ธUploading, editing and sharing Quilts
      • ๐ŸฅฝViewing your holograms on different platforms
    • ๐ŸŽฌHologram Video
    • ๐Ÿ”†Liteformsโ„ข
      • ๐ŸชŸGet Started on Windows
      • ๐ŸŽGet Started on MacOS
      • ๐Ÿง™Making Custom Liteforms
      • ๐ŸชConfigure Liteforms for Kiosk Setup
    • ๐Ÿ‘€Looking Glass Model Viewer
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      • โฉLooking Glass Media Encoder
  • Key Concepts
    • ๐Ÿ”‘Hologram 101
      • ๐ŸŽ‰Making great holograms
      • ๐ŸŒŽHolograms in the real world
      • ๐Ÿ‘พHolograms, but virtual
    • ๐Ÿ”How does Looking Glass Work?
    • ๐Ÿ“ธVirtual Camera
    • ๐ŸงŠ3D Design Guidelines
      • Lighting
      • Post-Processing
      • Scene Composition
      • Materials & Textures
      • Performance
    • ๐Ÿ’กQuilts
      • ๐ŸŽฌQuilt Video Encoding
    • ๐Ÿ’กLight Fields
      • โšกLinear Light Field Capture
    • ๐Ÿ“ฝ๏ธFilming a Looking Glass
  • Creator Tools
    • ๐ŸŽจOverview
    • ๐Ÿ”ŒUnity
      • โšกUsing Unity with Looking Glass
      • Setting up your Development Environment
      • Example Scenes
      • Prefabs
        • Hologram Camera
        • 3D Cursor
        • Dual Monitor Application
      • Script Reference
        • HologramCamera.cs
        • LKGDisplaySystem.cs
        • QuiltCapture.cs
        • Cursor3D.cs
        • OrbitControls.cs
        • BlockUploader.cs
        • MobileDMAController.cs
        • iOS Sample Scene Scripts
          • ChangeInteractionModality.cs
          • XYSlider.cs
          • XYSpotlight.cs
          • AudioRotateControl.cs
          • ModelController.cs
          • DemoIOSUIController.cs
          • PageHandler.cs
          • PageConnectHandler.cs
          • PageCalibrateHandler.cs
          • PageTestHandler.cs
          • DynamicAlcove.cs
      • Package Integrations
        • Built-in Render Pipeline Post-Processing
      • Developing for iOS
      • Depth of Field and Other Post-Processing Effects
      • Quilt Video Audio and Playback
      • Developing for Ultraleap Hand Tracking on Looking Glass
      • Looking Glass Pro (Legacy)
      • Additional Support
      • Change Log
    • ๐ŸนBlender
    • ๐Ÿ”ŒUnreal Engine
      • ๐Ÿ—’๏ธChange Log and Old Versions
      • ๐Ÿ’ฝInstalling the Unreal Engine plugin
      • ๐ŸŽฅUsing the Unreal Engine Plugin
        • Using the HoloPlay Capture
        • Exporting Quilt Images and Video with Sequencer
      • Accessing HoloPlay Data with Blueprint Scripting
      • Packaging the Project
      • Unreal Engine 4 (Legacy Support)
        • Unreal Engine 4 Quick Start
          • Using the HoloPlay Capture
          • Exporting Quilt Images and Video with Sequencer
    • ๐ŸŒWebXR
      • ๐Ÿ”ถPlayCanvas
      • 3๏ธโƒฃ3๏ธโƒฃ Three.JS
      • โš›๏ธReact-Three-Fiber
      • ๐ŸŒˆSpline
  • Tutorials
    • ๐Ÿ“ฑRunning Looking Glass Displays with iOS Devices
    • โ“‚๏ธCapturing Light Fields in Maya
    • ๐Ÿง‘โ€๐Ÿ”ฌUsing ShaderToy with Looking Glass
    • ๐ŸŽจSculpting with Adobe Medium and Looking Glass
    • ๐Ÿ”Turn Videogames Holographic with Refract
    • ๐Ÿ–๏ธBuilding with Leap Motion
  • Developer Docs
    • โš™๏ธLooking Glass Bridge SDK
      • ๐Ÿช›Web Application Integration
      • ๐Ÿ”ŒIntegrating Native Applications
      • ๐Ÿ““Native Function Reference
    • ๐ŸฆLooking Glass Core Migration Guide
  • Third Party Software
    • ๐Ÿ—ก๏ธ3D Slicer
    • ๐Ÿ”ฌVTK (Visualization Toolkit)
    • ๐Ÿ—บ๏ธParaView
    • ๐Ÿ”ฉCommunity Made Tools & Projects
  • Legacy Software
    • ๐Ÿ“ก3D Model Importer
      • 3D Model Importer App Guide
      • 3D Model Importer App Reference
    • ๐ŸŽญDiorama
      • Change Log
    • ๐ŸŽž๏ธDepth Recorder
    • ๐Ÿ“ธLightfield Photo App
    • ๐ŸLooking Glass Core Overview
    • ๐Ÿฝ๏ธLooking Glass Core SDK
      • C API Overview
        • HoloPlayCore.h
          • State Functions
          • General-Query-Functions
          • Device-Query-Functions
        • libHoloPlayCore.h
        • HoloPlayShaders.h
    • ๐Ÿ”ฐLooking Glass Core JS
      • API
        • HoloPlayCore.Client
        • HoloPlayCore.Message
        • HoloPlay Service Related
        • examples
  • Legacy Hardware
    • ๐Ÿ”ปLooking Glass 8.9"
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    • ๐Ÿ”ปLooking Glass 8K
    • ๐Ÿ”ปLooking Glass 16"
    • ๐Ÿ”ปLooking Glass 32"
    • ๐Ÿ”ปLooking Glass Pro
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  • ๐Ÿ› ๏ธFAQ & Troubleshooting
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On this page
  • hpc_GetDevicePropertyWinX
  • hpc_GetDevicePropertyWinY
  • hpc_GetDevicePropertyScreenW
  • hpc_GetDevicePropertyScreenH
  • hpc_GetDevicePropertyInvView
  • hpc_GetDevicePropertyRi
  • hpc_GetDevicePropertyBi
  • hpc_GetDevicePropertyPitch
  • hpc_GetDevicePropertyCenter
  • hpc_GetDevicePropertyTilt
  • hpc_GetDevicePropertyAspect
  • hpc_GetDevicePropertyFringe
  • hpc_GetDevicePropertySubp

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  1. Legacy Software
  2. Looking Glass Core SDK
  3. C API Overview
  4. HoloPlayCore.h

Device-Query-Functions

The following functions query per-device configuration parameters. They will return 0 if the device or calibration isn't found.

Returns

varies

Args

Device index.

A note on device indexing: HoloPlay Service assigns each connected device a persistent index, starting from 0. When a new device is connected, HoloPlay Service will assign it the lowest index available.

In certain situations, there may be no device present at a certain index. For instance, if two devices are connected, they will receive indices 0, then 1, respectively. If the device indexed 0 is disconnected, there will be a device present at index 1 but not at index 0. The next device to be connected will be assigned index 0.

hpc_GetDevicePropertyWinX

int hpc_GetDevicePropertyWinX(int dev_index)

Returns

X position of monitor, in window coordinates, reported by OS.

Args

Device Index

hpc_GetDevicePropertyWinY

int hpc_GetDevicePropertyWinY(int dev_index)

Returns

Y position of monitor, in window coordinates, reported by OS.

Args

Device Index

The following functions return values retrieved from the lenticular calibration file associated with the device and transmitted over USB. They should be loaded into the lenticular shader as uniform parameters of the same name and type.

hpc_GetDevicePropertyScreenW

int hpc_GetDevicePropertyScreenW(int dev_index)

Returns

Screen width in pixels.

Args

Device Index

hpc_GetDevicePropertyScreenH

int hpc_GetDevicePropertyScreenH(int dev_index)

Returns

Screen height in pixels.

Args

Device Index

hpc_GetDevicePropertyInvView

int hpc_GetDevicePropertyInvView(int dev_index)

Returns

Whether the lenticular shader should be inverted. (1 or 0)

Args

Device Index

hpc_GetDevicePropertyRi

int hpc_GetDevicePropertyRi(int dev_index)

Returns

'Red index' of each lenticular subpixel. (0 or 2)

Args

Device Index

hpc_GetDevicePropertyBi

int hpc_GetDevicePropertyBi(int dev_index)

Returns

'Blue index' of each lenticular subpixel. (0 or 2)

Args

Device Index

hpc_GetDevicePropertyPitch

float hpc_GetDevicePropertyPitch(int dev_index)

Returns

Lenticular lens pitch.

Args

Device Index

hpc_GetDevicePropertyCenter

float hpc_GetDevicePropertyCenter(int dev_index)

Returns

Lenticular center offset.

Args

Device Index

hpc_GetDevicePropertyTilt

float hpc_GetDevicePropertyTilt(int dev_index)

Returns

Lenticular tilt angle.

Args

Device Index

hpc_GetDevicePropertyAspect

float hpc_GetDevicePropertyAspect(int dev_index)

Returns

Display aspect ratio (Equal to ScreenW/ScreenH).

Args

Device Index

hpc_GetDevicePropertyFringe

float hpc_GetDevicePropertyFringe(int dev_index)

Returns

Display fringe correction uniform (currently only applicable to 15.6" Developer/Pro units).

Args

Device Index

hpc_GetDevicePropertySubp

float hpc_GetDevicePropertySubp(int dev_index)

Returns

Display subpixel size.

Args

Device Index

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Last updated 4 years ago

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