// ===========================================================================
// Copyright 2018 Autodesk, Inc. All rights reserved.
//
// Use of this software is subject to the terms of the Autodesk license
// agreement provided at the time of installation or download, or which
// otherwise accompanies this software in either electronic or hard copy form.
// ===========================================================================
//
//  Procedure Name:
//      sceneIsEmpty
//
//  Description:
//		Procedure to check if the scene is "empty" according to this specific definition
//      of empty: Scene contains no transform, besides cameras.
//
//  Input Arguments:
//
//  Return Value:
//      After a file new or opening Maya, this procedure returns true.
//      False as soon as a non-camera transform exists in the scene.
//

global proc int sceneIsEmpty() {

	int $retVal = 1;
	
	string $cameras[] = `listCameras`;
	string $transf[]  = `ls -transforms`;

	int $nbCam = size($cameras);
	int $nbTrs = size($transf);
	
	return $nbCam == $nbTrs;
};