<ViroPortalScene passable={true}>
<ViroPortal
position={[0,0,-1]}
scale={[0.1,0.1,0.1]}
>
  {
// ViroPortal to Create window or door 
}
<Viro3DObject 
source={your_source}
type="VRX"
/>
</ViroPortal>
{
// Viro360Image to create indoor scene
}
<Viro360Image
source={your_source}
/>
</ViroPortalScene>