// ===========================================================================
// 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.
// ===========================================================================
//
// Returns the file extension corresponding to the current image format.
//
global proc string getImfImageExt()
{
	global string $gImgExt[];  // This is the actual file extension
	if (size( $gImgExt ) == 0) {
		// If the file format array has not been initialized yet, do so.
		// This routine may be called in dynPaintMenus.mel during the
		// file save for PFX canvas images.
		createImageFormats();
	}

	int $compare;
	int $imageNum = `getAttr "defaultRenderGlobals.imageFormat"`;
	// 
	string $imageExt = "";
	switch($imageNum) {
		case 50:							// IMF plug-in
		global string $gImfPlugInExt[];
		global string $gImfPlugInKey[];
		string $key = `getAttr "defaultRenderGlobals.imfkey"`;
		for ($i=0; $i < size($gImfPlugInKey); ++$i) {
			if ($gImfPlugInKey[$i] == $key) {
				$imageExt = $gImfPlugInExt[$i];
				break;
			}
		}
		break;

		case 51:
		$imageExt = `getAttr "defaultRenderGlobals.imfkey"`;
		break;
		
		// Vector formats are not registered as IMF.
		case 60: $imageExt = "swf"; break;
		case 61: $imageExt = "ai"; break;
		case 62: $imageExt = "svg"; break;
		case 63: $imageExt = "swft"; break;

		default:
		$imageExt = $gImgExt[$imageNum];
	}

	if ($imageExt == "")
		$imageExt = "iff";

	return $imageExt;
}