private void renderSixCamerasAndReadback(final GVRCameraRig mainCameraRig, byte[][] byteArrays) {
if (byteArrays.length != 6) {
throw new IllegalArgumentException("byteArrays length is not 6.");
} else {
// temporarily create a center camera
GVRPerspectiveCamera centerCamera = new GVRPerspectiveCamera(this);
centerCamera.setFovY(90.0f);
centerCamera.setRenderMask(GVRRenderMaskBit.Left | GVRRenderMaskBit.Right);
GVRSceneObject centerCameraObject = new GVRSceneObject(this);
centerCameraObject.attachCamera(centerCamera);
mainCameraRig.getOwnerObject().addChildObject(centerCameraObject);
GVRTransform centerCameraTransform = centerCameraObject.getTransform();
int index = 0;
// render +x face
centerCameraTransform.rotateByAxis(-90, 0, 1, 0);
renderOneCameraAndAddToList(centerCamera, byteArrays, index++);
// render -x face
centerCameraTransform.rotateByAxis(180, 0, 1, 0);
renderOneCameraAndAddToList(centerCamera, byteArrays, index++);
// render +y face
centerCameraTransform.rotateByAxis(-90, 0, 1, 0);
centerCameraTransform.rotateByAxis(90, 1, 0, 0);
renderOneCameraAndAddToList(centerCamera, byteArrays, index++);
// render -y face
centerCameraTransform.rotateByAxis(180, 1, 0, 0);
renderOneCameraAndAddToList(centerCamera, byteArrays, index++);
// render +z face
centerCameraTransform.rotateByAxis(90, 1, 0, 0);
centerCameraTransform.rotateByAxis(180, 0, 1, 0);
renderOneCameraAndAddToList(centerCamera, byteArrays, index++);
// render -z face
centerCameraTransform.rotateByAxis(180, 0, 1, 0);
renderOneCameraAndAddToList(centerCamera, byteArrays, index++);
centerCameraObject.detachCamera();
mainCameraRig.getOwnerObject().removeChildObject(centerCameraObject);
}
}
