// ===========================================================================
// 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.
// ===========================================================================

//
//
//  Creation Date:  Oct 21, 2002
//
//  Description:
//      Get fluid properties at point
//		returns 0 if point is outside
//      
//		
//  Input Arguments:
//      fluid, world space position, attribute to get
//		fluidVectorAtPoint fluid1 -2.4 -2.4 0 velocity;
//
//  Return Value:
//      float array 
//

global proc float[] fluidVectorValueAtPoint( string $fluid, float $xp, float $yp, float $zp, string $fluidAttr )
{
	// use this for color, velocity
	int $vox[] = `fluidVoxelInfo -objectSpace false -cb -voxel $xp $yp $zp $fluid`;
	if( size($vox) == 0) {
		float $zero[];
		$zero[0] = 0.0;
		$zero[1] = 0.0;
		$zero[2] = 0.0;
		return $zero;
	}
	return `getFluidAttr -at $fluidAttr -xi $vox[0] -yi $vox[1] -zi $vox[2] $fluid`;
}