// ===========================================================================
// 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.
// ===========================================================================
proc deleteFace(string $selectedFaces[])
{
	//get the list of edges correspoding to the selected faces
	//select the edges
	string $edges[] = `polyListComponentConversion -ff -te $selectedFaces`;
	select $edges;
	
	//save edges in a set since IDs may change when faces get deleted
	string $edgeSet = `sets`;

	//delete the faces and select the border edges only
	delete $selectedFaces;
	select -r $edgeSet;
}

global proc performPolyDeleteElements()
{
	global int $gSelectMeshesBit;
	global int $gSelectMeshVerts;
	global int $gSelectMeshEdge;
	global int $gSelectMeshFaces;
	
	string $objList[] =	`filterExpand -expand false -selectionMask $gSelectMeshesBit`;
	string $vertList[] = `filterExpand -expand false -selectionMask $gSelectMeshVerts`;
	string $edgeList[] = `filterExpand -expand false -selectionMask $gSelectMeshEdge`;
	string $faceList[] = `filterExpand -expand false -selectionMask $gSelectMeshFaces`;

 	if(size($objList) != 0)
 	{
		select -deselect $objList;
	}

 	if(size($vertList) != 0)
 	{
 		DeleteVertex;
	}
	else if(size($edgeList) != 0)
	{
		DeleteEdge;
	}
	else if(size($faceList) != 0)
	{
		deleteFace($faceList);		
	}
	else
		warning( (uiRes("m_performPolyDeleteElements.kWarningNoVerticesEdgesSelected")) );
}