// Copyright 2002-2009.  Adobe Systems, Incorporated.  All rights reserved.
// This script will  take a 3d model  and invert the transparency of each material
// This was needed to fix some COLLADA models that have bad transparency settings

// enable double clicking from the Macintosh Finder or the Windows Explorer
#target photoshop

// in case we double clicked the file
app.bringToFront();

// debug level: 0-2 (0:disable, 1:break on error, 2:break at beginning)
// $.level = 0;
// debugger; // launch debugger on next line

var layer3DStrID 			= stringIDToTypeID( "layer3D" );
var sceneID 				= stringIDToTypeID( "key3DScene");
var setMaterialPropertyID 	= stringIDToTypeID( "set3DMaterialScalar" );
var idkeythreeDName 		= stringIDToTypeID( "key3DName" );
var propertyID 				= charIDToTypeID( 'Prpr' );
var layerID 				= charIDToTypeID( 'Lyr ' );
var targetID 				= charIDToTypeID( 'Trgt' );
var ordinalID 				= charIDToTypeID( 'Ordn' );
var materialID 				= charIDToTypeID( 'mtll');
var transparencyID 			= charIDToTypeID( 'Trns');
var nameID 					= charIDToTypeID( 'Nm  ');
var idType 					= charIDToTypeID( "Type" );
var idOpacity 				= charIDToTypeID( "Vl  " );
var opacityType 			= 1;

var strAlert = localize( "$$$/Alert/3D/layernotselected=You must have a 3D layer selected." );

//Execute a current layer data command
var get3DLayerAction = new ActionReference();
get3DLayerAction.putProperty( propertyID , layer3DStrID );
get3DLayerAction.putEnumerated( layerID, ordinalID, targetID );

//Get the 3D layer data out of the currently selected layer
var layerDescriptor = executeActionGet( get3DLayerAction );
if ( layerDescriptor.hasKey( layer3DStrID ) )
	{
	//Get the scene
	var sceneDescriptor = layerDescriptor.getObjectValue( layer3DStrID );
	var sceneObject = sceneDescriptor.getObjectValue( sceneID );
	
	//Get the material list
	var materialList = sceneObject.getList(materialID);
	for(var i=0;i<materialList.count;i++)
		{
		//For each material get the name and transparency
		var materialObject = materialList.getObjectValue(i);
		var transparency = materialObject.getDouble(transparencyID);
		var materialName = materialObject.getString(nameID);
		
		//Create a new material descriptor and put in the type (opacity), new opacity value, and the name of the material
		var newMaterialDescriptor = new ActionDescriptor();
		newMaterialDescriptor.putInteger( idType, opacityType );
		newMaterialDescriptor.putDouble( idOpacity, 1-transparency );
		newMaterialDescriptor.putString( idkeythreeDName, materialName );
		
		//Send the setMateiralProperty action with the new material descriptor
		executeAction( setMaterialPropertyID, newMaterialDescriptor, DialogModes.NO );

		}
	}
else
	alert(strAlert);