#ifndef  __FREEGLUT_EXT_H__
#define  __FREEGLUT_EXT_H__

/*
 * freeglut_ext.h
 *
 * The non-GLUT-compatible extensions to the freeglut library include file
 *
 * Copyright (c) 1999-2000 Pawel W. Olszta. All Rights Reserved.
 * Written by Pawel W. Olszta, <olszta@sourceforge.net>
 * Creation date: Thu Dec 2 1999
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * PAWEL W. OLSZTA BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

#ifdef __cplusplus
    extern "C" {
#endif

/*
 * Additional GLUT Key definitions for the Special key function
 */
#define GLUT_KEY_NUM_LOCK           0x006D
#define GLUT_KEY_BEGIN              0x006E
#define GLUT_KEY_DELETE             0x006F
#define GLUT_KEY_SHIFT_L            0x0070
#define GLUT_KEY_SHIFT_R            0x0071
#define GLUT_KEY_CTRL_L             0x0072
#define GLUT_KEY_CTRL_R             0x0073
#define GLUT_KEY_ALT_L              0x0074
#define GLUT_KEY_ALT_R              0x0075

/*
 * GLUT API Extension macro definitions -- behaviour when the user clicks on an "x" to close a window
 */
#define GLUT_ACTION_EXIT                         0
#define GLUT_ACTION_GLUTMAINLOOP_RETURNS         1
#define GLUT_ACTION_CONTINUE_EXECUTION           2

/*
 * Create a new rendering context when the user opens a new window?
 */
#define GLUT_CREATE_NEW_CONTEXT                  0
#define GLUT_USE_CURRENT_CONTEXT                 1

/*
 * Direct/Indirect rendering context options (has meaning only in Unix/X11)
 */
#define GLUT_FORCE_INDIRECT_CONTEXT              0
#define GLUT_ALLOW_DIRECT_CONTEXT                1
#define GLUT_TRY_DIRECT_CONTEXT                  2
#define GLUT_FORCE_DIRECT_CONTEXT                3

/*
 * GLUT API Extension macro definitions -- the glutGet parameters
 */
#define  GLUT_INIT_STATE                    0x007C

#define  GLUT_ACTION_ON_WINDOW_CLOSE        0x01F9

#define  GLUT_WINDOW_BORDER_WIDTH           0x01FA
#define  GLUT_WINDOW_BORDER_HEIGHT          0x01FB
#define  GLUT_WINDOW_HEADER_HEIGHT          0x01FB  /* Docs say it should always have been GLUT_WINDOW_BORDER_HEIGHT, keep this for backward compatibility */

#define  GLUT_VERSION                       0x01FC

#define  GLUT_RENDERING_CONTEXT             0x01FD
#define  GLUT_DIRECT_RENDERING              0x01FE

#define  GLUT_FULL_SCREEN                   0x01FF

#define  GLUT_SKIP_STALE_MOTION_EVENTS      0x0204

#define  GLUT_GEOMETRY_VISUALIZE_NORMALS    0x0205

#define  GLUT_STROKE_FONT_DRAW_JOIN_DOTS    0x0206  /* Draw dots between line segments of stroke fonts? */

#define  GLUT_ALLOW_NEGATIVE_WINDOW_POSITION 0x0207 /* GLUT doesn't allow negative window positions by default */

#define  GLUT_WINDOW_SRGB                   0x007D

/*
 * New tokens for glutInitDisplayMode.
 * Only one GLUT_AUXn bit may be used at a time.
 * Value 0x0400 is defined in OpenGLUT.
 */
#define  GLUT_AUX                           0x1000

#define  GLUT_AUX1                          0x1000
#define  GLUT_AUX2                          0x2000
#define  GLUT_AUX3                          0x4000
#define  GLUT_AUX4                          0x8000

/*
 * Context-related flags, see fg_state.c
 * Set the requested OpenGL version
 */
#define  GLUT_INIT_MAJOR_VERSION            0x0200
#define  GLUT_INIT_MINOR_VERSION            0x0201
#define  GLUT_INIT_FLAGS                    0x0202
#define  GLUT_INIT_PROFILE                  0x0203

/*
 * Flags for glutInitContextFlags, see fg_init.c
 */
#define  GLUT_DEBUG                         0x0001
#define  GLUT_FORWARD_COMPATIBLE            0x0002


/*
 * Flags for glutInitContextProfile, see fg_init.c
 */
#define GLUT_CORE_PROFILE                   0x0001
#define	GLUT_COMPATIBILITY_PROFILE          0x0002

/*
* GLUT API Extension macro definitions -- Spaceball button definitions
*/

#define  GLUT_SPACEBALL_BUTTON_A            0x0001
#define  GLUT_SPACEBALL_BUTTON_B            0x0002
#define  GLUT_SPACEBALL_BUTTON_C            0x0004
#define  GLUT_SPACEBALL_BUTTON_D            0x0008
#define  GLUT_SPACEBALL_BUTTON_E            0x0010

/*
 * Process loop function, see fg_main.c
 */
FGAPI void    FGAPIENTRY glutMainLoopEvent( void );
FGAPI void    FGAPIENTRY glutLeaveMainLoop( void );
FGAPI void    FGAPIENTRY glutExit         ( void );

/*
 * Window management functions, see fg_window.c
 */
FGAPI void    FGAPIENTRY glutFullScreenToggle( void );
FGAPI void    FGAPIENTRY glutLeaveFullScreen( void );

/*
 * Menu functions
 */
FGAPI void    FGAPIENTRY glutSetMenuFont( int menuID, void* font );

/*
 * Window-specific callback functions, see fg_callbacks.c
 */
FGAPI void    FGAPIENTRY glutMouseWheelFunc( void (* callback)( int, int, int, int ) );
FGAPI void    FGAPIENTRY glutPositionFunc( void (* callback)( int, int ) );
FGAPI void    FGAPIENTRY glutCloseFunc( void (* callback)( void ) );
FGAPI void    FGAPIENTRY glutWMCloseFunc( void (* callback)( void ) );
/* And also a destruction callback for menus */
FGAPI void    FGAPIENTRY glutMenuDestroyFunc( void (* callback)( void ) );

/*
 * State setting and retrieval functions, see fg_state.c
 */
FGAPI void    FGAPIENTRY glutSetOption ( GLenum option_flag, int value );
FGAPI int *   FGAPIENTRY glutGetModeValues(GLenum mode, int * size);
/* A.Donev: User-data manipulation */
FGAPI void*   FGAPIENTRY glutGetWindowData( void );
FGAPI void    FGAPIENTRY glutSetWindowData(void* data);
FGAPI void*   FGAPIENTRY glutGetMenuData( void );
FGAPI void    FGAPIENTRY glutSetMenuData(void* data);

/*
 * Font stuff, see fg_font.c
 */
FGAPI int     FGAPIENTRY glutBitmapHeight( void* font );
FGAPI GLfloat FGAPIENTRY glutStrokeHeight( void* font );
FGAPI void    FGAPIENTRY glutBitmapString( void* font, const unsigned char *string );
FGAPI void    FGAPIENTRY glutStrokeString( void* font, const unsigned char *string );

/*
 * Geometry functions, see fg_geometry.c
 */
FGAPI void    FGAPIENTRY glutWireRhombicDodecahedron( void );
FGAPI void    FGAPIENTRY glutSolidRhombicDodecahedron( void );
FGAPI void    FGAPIENTRY glutWireSierpinskiSponge ( int num_levels, double offset[3], double scale );
FGAPI void    FGAPIENTRY glutSolidSierpinskiSponge ( int num_levels, double offset[3], double scale );
FGAPI void    FGAPIENTRY glutWireCylinder( double radius, double height, GLint slices, GLint stacks);
FGAPI void    FGAPIENTRY glutSolidCylinder( double radius, double height, GLint slices, GLint stacks);

/*
 * Rest of functions for rendering Newell's teaset, found in fg_teapot.c
 * NB: front facing polygons have clockwise winding, not counter clockwise
 */
FGAPI void    FGAPIENTRY glutWireTeacup( double size );
FGAPI void    FGAPIENTRY glutSolidTeacup( double size );
FGAPI void    FGAPIENTRY glutWireTeaspoon( double size );
FGAPI void    FGAPIENTRY glutSolidTeaspoon( double size );

/*
 * Extension functions, see fg_ext.c
 */
typedef void (*GLUTproc)();
FGAPI GLUTproc FGAPIENTRY glutGetProcAddress( const char *procName );

/*
 * Multi-touch/multi-pointer extensions
 */

#define GLUT_HAS_MULTI 1

/* TODO: add device_id parameter,
   cf. http://sourceforge.net/mailarchive/forum.php?thread_name=20120518071314.GA28061%40perso.beuc.net&forum_name=freeglut-developer */
FGAPI void FGAPIENTRY glutMultiEntryFunc( void (* callback)( int, int ) );
FGAPI void FGAPIENTRY glutMultiButtonFunc( void (* callback)( int, int, int, int, int ) );
FGAPI void FGAPIENTRY glutMultiMotionFunc( void (* callback)( int, int, int ) );
FGAPI void FGAPIENTRY glutMultiPassiveFunc( void (* callback)( int, int, int ) );

/*
 * Joystick functions, see fg_joystick.c
 */
/* USE OF THESE FUNCTIONS IS DEPRECATED !!!!! */
/* If you have a serious need for these functions in your application, please either
 * contact the "freeglut" developer community at freeglut-developer@lists.sourceforge.net,
 * switch to the OpenGLUT library, or else port your joystick functionality over to PLIB's
 * "js" library.
 */
int     glutJoystickGetNumAxes( int ident );
int     glutJoystickGetNumButtons( int ident );
int     glutJoystickNotWorking( int ident );
float   glutJoystickGetDeadBand( int ident, int axis );
void    glutJoystickSetDeadBand( int ident, int axis, float db );
float   glutJoystickGetSaturation( int ident, int axis );
void    glutJoystickSetSaturation( int ident, int axis, float st );
void    glutJoystickSetMinRange( int ident, float *axes );
void    glutJoystickSetMaxRange( int ident, float *axes );
void    glutJoystickSetCenter( int ident, float *axes );
void    glutJoystickGetMinRange( int ident, float *axes );
void    glutJoystickGetMaxRange( int ident, float *axes );
void    glutJoystickGetCenter( int ident, float *axes );

/*
 * Initialization functions, see fg_init.c
 */
/* to get the typedef for va_list */
#include <stdarg.h>
FGAPI void    FGAPIENTRY glutInitContextVersion( int majorVersion, int minorVersion );
FGAPI void    FGAPIENTRY glutInitContextFlags( int flags );
FGAPI void    FGAPIENTRY glutInitContextProfile( int profile );
FGAPI void    FGAPIENTRY glutInitErrorFunc( void (* callback)( const char *fmt, va_list ap ) );
FGAPI void    FGAPIENTRY glutInitWarningFunc( void (* callback)( const char *fmt, va_list ap ) );

/* OpenGL >= 2.0 support */
FGAPI void    FGAPIENTRY glutSetVertexAttribCoord3( GLint attrib );
FGAPI void    FGAPIENTRY glutSetVertexAttribNormal( GLint attrib );
FGAPI void    FGAPIENTRY glutSetVertexAttribTexCoord2( GLint attrib );

/* Mobile platforms lifecycle */
FGAPI void    FGAPIENTRY glutInitContextFunc( void (* callback)( void ) );
FGAPI void    FGAPIENTRY glutAppStatusFunc( void (* callback)( int ) );
/* state flags that can be passed to callback set by glutAppStatusFunc */
#define GLUT_APPSTATUS_PAUSE                0x0001
#define GLUT_APPSTATUS_RESUME               0x0002

/*
 * GLUT API macro definitions -- the display mode definitions
 */
#define  GLUT_CAPTIONLESS                   0x0400
#define  GLUT_BORDERLESS                    0x0800
#define  GLUT_SRGB                          0x1000

/* User-argument callbacks and implementation */
#include "freeglut_ucall.h"

#ifdef __cplusplus
    }
#endif

/*** END OF FILE ***/

#endif /* __FREEGLUT_EXT_H__ */
