// InitCameraControllerVariables
// Made public so that it can be called by classes that require information about the
// camera to be present when initing variables in 'Start'
public void InitCameraControllerVariables()
{
// Get the IPD value (distance between eyes in meters)
OVRDeviceImposter.GetIPD(ref IPD);
// Get the values for both IPD and lens distortion correction shift. We don't normally
// need to set the PhysicalLensOffset once it's been set here.
OVRDeviceImposter.CalculatePhysicalLensOffsets(ref LensOffsetLeft, ref LensOffsetRight);
// Using the calculated FOV, based on distortion parameters, yeilds the best results.
// However, public functions will allow to override the FOV if desired
VerticalFOV = OVRDeviceImposter.VerticalFOV();
// Store aspect ratio as well
AspectRatio = OVRDeviceImposter.CalculateAspectRatio();
OVRDeviceImposter.GetDistortionCorrectionCoefficients(ref DistK0, ref DistK1, ref DistK2, ref DistK3);
// Get our initial world orientation of the cameras from the scene (we can grab it from
// the set FollowOrientation object or this OVRCameraController gameObject)
if (FollowOrientation != null)
{
OrientationOffset = FollowOrientation.rotation;
}
else
{
OrientationOffset = transform.rotation;
}
}
// SetCameraLensCorrection
void ConfigureCameraLensCorrection(ref Camera camera)
{
// Get the distortion scale and aspect ratio to use when calculating distortion shader
float distortionScale = 1.0f / OVRDeviceImposter.DistortionScale();
float aspectRatio = OVRDeviceImposter.CalculateAspectRatio();
// These values are different in the SDK World Demo; Unity renders each camera to a buffer
// that is normalized, so we will respect this rule when calculating the distortion inputs
float NormalizedWidth = 1.0f;
float NormalizedHeight = 1.0f;
OVRLensCorrection lc = camera.GetComponent <OVRLensCorrection>();
lc._Scale.x = (NormalizedWidth / 2.0f) * distortionScale;
lc._Scale.y = (NormalizedHeight / 2.0f) * distortionScale * aspectRatio;
lc._ScaleIn.x = (2.0f / NormalizedWidth);
lc._ScaleIn.y = (2.0f / NormalizedHeight) / aspectRatio;
lc._HmdWarpParam.x = DistK0;
lc._HmdWarpParam.y = DistK1;
lc._HmdWarpParam.z = DistK2;
}
