// ===========================================================================
// 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.
// ===========================================================================
// 
// If any of the segmentation properties change we need to 
// update the shader assignment. 
//
source "createTextureToGeom.mel";

global proc TGcolorChangeAttr( string $attr ) 
{
	string $tokenAry[]; 
	tokenize( $attr, ".", $tokenAry ); 
	TGcolorChange( $tokenAry[0] ); 
}

global proc TGcolorChange( string $nodeName )
//
// Description: 
//  If the user changes any of the parameters that will result in a new 
//  segmentation of the image then we must reassign the shaders. 
//  
{
	string $mesh[] = `listConnections -shapes true -type "mesh" ($nodeName + ".message")`;
	if ( size($mesh) > 0 ) { 
		string $if = `getAttr ($nodeName + ".imageFile")`;
		if ( !`filetest -r $if` ) {
			string $msg = (uiRes("m_TGcolorChange.kFileDoesNotExist"));
			error(`format -stringArg $if $msg`);
		}
		
		// Extract the new basename (if it has changed). 
		//
		$baseName = basenameEx( $if );
		
		// Assign new group ids. 
		//
		assignGroupIds( $baseName, $nodeName, $mesh[0] ); 

		if ( objExists ($nodeName + ".shaderAssignment") ) { 
			// Do the actual shader assignment. 
			//
			string $shading = `getAttr ($nodeName + ".shaderAssignment")`; 
			textureToGeomApplyColor( $nodeName, $if, $mesh[0], $shading );
		}
	}
}