sl@0: /*
sl@0: * Copyright (c) 2003 Nokia Corporation and/or its subsidiary(-ies).
sl@0: * All rights reserved.
sl@0: * This component and the accompanying materials are made available
sl@0: * under the terms of the License "Eclipse Public License v1.0"
sl@0: * which accompanies this distribution, and is available
sl@0: * at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: *
sl@0: * Initial Contributors:
sl@0: * Nokia Corporation - initial contribution.
sl@0: *
sl@0: * Contributors:
sl@0: *
sl@0: * Description: Camera interface
sl@0: *
sl@0: */
sl@0: 
sl@0: #ifndef __M3G_CAMERA_H__
sl@0: #define __M3G_CAMERA_H__
sl@0: 
sl@0: /*!
sl@0:  * \internal
sl@0:  * \file 
sl@0:  * \brief Camera interface
sl@0:  */
sl@0: 
sl@0: #include "m3g_gl.h"
sl@0: #include "m3g_node.h"
sl@0: 
sl@0: /*!
sl@0:  * \internal
sl@0:  * \brief Camera node instance data
sl@0:  */
sl@0: struct M3GCameraImpl
sl@0: {
sl@0: 	Node node;
sl@0:     
sl@0:     M3Gint	 projType;   
sl@0:     M3Gfloat heightFov;
sl@0:     M3Gfloat aspect;
sl@0:     M3Gfloat clipNear;
sl@0:     M3Gfloat clipFar;
sl@0: 
sl@0:     Matrix	projMatrix;
sl@0:     Vec4 frustumPlanes[6];
sl@0:     
sl@0:     M3Gbool frustumPlanesValid;
sl@0:     M3Gbool zeroViewVolume;
sl@0: };
sl@0: 
sl@0: /*----------------------------------------------------------------------
sl@0:  * Internal functions
sl@0:  *--------------------------------------------------------------------*/
sl@0: 
sl@0: static void m3gInitCamera(Interface *m3g, Camera *camera);
sl@0: static void m3gApplyProjection(const Camera *camera);
sl@0: 
sl@0: static const Vec4 *m3gFrustumPlanes(const Camera *camera);
sl@0: static const Matrix *m3gProjectionMatrix(const Camera *camera);
sl@0: 
sl@0: M3G_INLINE static M3Gbool m3gValidProjection(const Camera *camera)
sl@0: {
sl@0:     if (camera->zeroViewVolume) {
sl@0:         M3G_LOG1(M3G_LOG_WARNINGS,
sl@0:                  "Warning: Invalid projection for camera 0x%08X\n",
sl@0:                  (unsigned) camera);
sl@0:         return M3G_FALSE;
sl@0:     }
sl@0:     return M3G_TRUE;
sl@0: }
sl@0: 
sl@0: 
sl@0: #endif /*__M3G_CAMERA_H__*/