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Libovr 1.17 Reference Guide

ovrViewScaleDesc Struct Reference

Contains the data necessary to properly calculate position info for various layer types.

Data Fields

ovrPosef	HmdToEyePose ( ) Transform of each eye from the HMD center, in meters.
float	HmdSpaceToWorldScaleInMeters ( ) Ratio of viewer units to meter units.

Detailed Description

HmdToEyePose is the same value pair provided in ovrEyeRenderDesc.
HmdSpaceToWorldScaleInMeters is used to scale player motion into in-application units. In other words, it is how big an in-application unit is in the player's physical meters. For example, if the application uses inches as its units then HmdSpaceToWorldScaleInMeters would be 0.0254. Note that if you are scaling the player in size, this must also scale. So if your application units are inches, but you're shrinking the player to half their normal size, then HmdSpaceToWorldScaleInMeters would be 0.0254*2.0.

ovrEyeRenderDesc, ovr_SubmitFrame

Field Documentation

ovrPosef ovrViewScaleDesc::HmdToEyePose[ovrEye_Count] ( )

Transform of each eye from the HMD center, in meters.

float ovrViewScaleDesc::HmdSpaceToWorldScaleInMeters ( )

Ratio of viewer units to meter units.

The documentation for this struct was generated from the following file: Include/OVR_CAPI.h