Definition
WebXR Layers API Level 1 defines XREquirectLayerInit
dictionary XREquirectLayerInit : XRLayerInit {
XRTextureType textureType = "texture";
XRRigidTransform? transform;
float radius = 0;
float centralHorizontalAngle = 6.28318;
float upperVerticalAngle = 1.570795;
float lowerVerticalAngle = -1.570795;
};