/*

* Copyright (c) 2003 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: Light manager interface

*

*/

#ifndef __M3G_LIGHTMANAGER_H__

#define __M3G_LIGHTMANAGER_H__

/*!

 * \internal

 * \file

 * \brief Light manager class for managing and selecting from a

 * dynamic pool of lights in RenderContext

 *

 * A LightManager is a component of a RenderContext, and can not exist

 * as a standalone object.

 * 

 */

#include "m3g_array.h"

/*!

 * \internal

 * \brief Light manager structure

 */

typedef struct

{

    PointerArray lights;

    M3Gsizei numActive;

} LightManager;

/*----------------------------------------------------------------------

 * Internal functions

 *--------------------------------------------------------------------*/

static void     m3gClearLights2         (LightManager *mgr);

static void     m3gDestroyLightManager  (LightManager *mgr, Interface *m3g);

static M3Gint   m3gInsertLight          (LightManager *mgr, Light *light, const Matrix *tf, Interface *m3g);

static M3Gsizei m3gLightArraySize       (const LightManager *mgr);

static void     m3gReplaceLight         (LightManager *mgr, M3Gint idx, Light *light, const Matrix *tf);

static void     m3gSelectGLLights       (const LightManager *mgr,

                                         M3Gsizei maxNum,

                                         M3Guint scope,

                                         M3Gfloat x, M3Gfloat y, M3Gfloat z);

static void m3gTransformLights          (LightManager *mgr, const Matrix *mtx);

static Light *m3gGetLightTransformInternal(const LightManager *mgr,

                                           M3Gint idx, M3GMatrix *transform);

#endif /*__M3G_LIGHTMANAGER_H__*/