// ===========================================================================
// 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.
// ===========================================================================
// 
// Toggle the ignore while rendering flag on = 1 or off = 0 for all the shaders 
// attached to the selected objects. 
//
// The only problem with this script is that .transparency defaults
// to a non-opaque value !
// 
global proc toggleMaterialMapping(int $state) 
{ 
    string $selList[] = `selectedNodes -do`;
    string $currentObj; 
    for ( $currentObj in $selList ) 
    { 
		//print("Handle object " + $currentObj + "\n");

        string $shdGrpList[] = `listSets -type 1 -ets -object $currentObj`; 
        string $currentSG; 
		//print ($shdGrpList);
        for ($currentSG in $shdGrpList ) 
        { 
            string $srfShdrs[] = `listConnections -d off 
				($currentSG + ".surfaceShader")`; 

			if (size($srfShdrs) > 0)
			{
				string $killShader;
				$killShader = $srfShdrs[0];

				//print("// Ignore texture on shader " + $killShader + 
				//	  "( shading group " + $currentSG + ")\n");

				//
				// To create the initial ignore attribute, set
				// just one of the texturable attributes to "ignore".
				// "color" is as good as any attribute.
				//
				// Check for a layered shader or layered texture. If it's
				// a layered shader, then you want to turn off a each of it's
				// inputs.
				// 
				string $shaderType = `nodeType $killShader`;
				if ($shaderType == "layeredShader")
				{
					string $layeredShaders[] = 
						`listConnections -d off ($killShader+".inputs")`;
					if (size($layeredShaders))
					{
						int $count = 0;
						for ($s in $layeredShaders)
						{
							//print("Change layered shader texture input " + $s + "\n");
							shadingConnection -e -cs $state 
								($killShader + ".inputs["+$count+"].color"); 
							$count++;
						}
					}
				}
				else
				{
					//print("Touch shader input " + $killShader + "\n");
					shadingConnection -e -cs $state ($killShader + ".color"); 

					string $attrs[] = `listAttr -ud $killShader`;
					int $i;
					int $ignoreExists = 0;
					for ($i =0; $i < size($attrs); $i++)
					{
						if (match("ignored", $attrs[$i]) == "ignored")
						{
							$ignoreExists = 1;
							$i = size($attrs)+10;
						}
					}
					
					if ($ignoreExists == 0)
					{
						//print("Add ignore attribute\n");
						addAttr -multi -at long -sn "isc" -bt "IGSC" 
							-ln "ignoredShadingConnections" $killShader;
					}
					else
					{
						//print("Ignore attribute already exists\n");
					}
					
					// Just hard code enough entries to make sure we
					// toggle on/off every mappable attribute.
					//
					//$ignoreSize = 
					//`getAttr -s ($killShader + ".ignoredShadingConnections")`;
					$ignoreSize = 3;
					//print ("Kill shader " + $killShader + ". Ignore size = " 
					// + $ignoreSize + "\n");
					for ($i=0; $i < $ignoreSize; $i++)
					{
						//print ($killShader + ".ignoredShadingConnections[" + $i + "]");
						//print (" set to state " + $state + "\n");
						if ($state)
							setAttr ($killShader + 
									 ".ignoredShadingConnections[" + $i + "]") 
							0;
						else
							setAttr ($killShader + 
									 ".ignoredShadingConnections[" + $i + "]") 
							1065268659; // Use this number if pre-6.0: 1064744371;
					}
				}
			}
        }
    } 
}