From a50dbd3c1aa9750cdbdfa1aa24eb6ebd8d946e6c Mon Sep 17 00:00:00 2001 From: John Tsiombikas Date: Sun, 6 Feb 2022 10:28:23 +0000 Subject: [PATCH] Removed the doc directory from the source tree, which contained out of date, unmaintained web pages, last updated in the early 2000s. Its presence was pointless at best, confusing at worst. git-svn-id: svn+ssh://svn.code.sf.net/p/freeglut/code/trunk/freeglut/freeglut@1869 7f0cb862-5218-0410-a997-914c9d46530a --- doc/download.html | 42 - doc/freeglut.html | 163 ---- doc/freeglut_logo.png | Bin 15887 -> 0 bytes doc/freeglut_user_interface.html | 1956 -------------------------------------- doc/index.html | 101 -- doc/ogl_sm.png | Bin 1586 -> 0 bytes doc/progress.html | 137 --- doc/structure.html | 80 -- 8 files changed, 2479 deletions(-) delete mode 100755 doc/download.html delete mode 100755 doc/freeglut.html delete mode 100755 doc/freeglut_logo.png delete mode 100644 doc/freeglut_user_interface.html delete mode 100755 doc/index.html delete mode 100755 doc/ogl_sm.png delete mode 100755 doc/progress.html delete mode 100755 doc/structure.html diff --git a/doc/download.html b/doc/download.html deleted file mode 100755 index b9baab2..0000000 --- a/doc/download.html +++ /dev/null @@ -1,42 +0,0 @@ - - - - - - - - - - The freeglut project - - - - The freeglut logo

- -

-I upload it, you download it. That's the ying-yang nature of the Buddha. -

- -

January the 16th, 2000 -

Here is a list of files you can download: -

- -

- - freeglut-1.3-alpha-2000-01-04.tar.gz (approx. 210kB) -
- - freeglut-1.3-alpha-2000-01-06.tar.gz (approx. 220kB) -
- - freeglut-1.3-alpha-2000-01-09.tar.gz (approx. 230kB) -
- - freeglut-1.3-alpha-2000-01-16.tar.gz (approx. 230kB) -

- -

- diff --git a/doc/freeglut.html b/doc/freeglut.html deleted file mode 100755 index fc6ca6e..0000000 --- a/doc/freeglut.html +++ /dev/null @@ -1,163 +0,0 @@ - - - - - - - - - - The freeglut project - - - - The freeglut logo

- -

-I am best at what I do worst and for this gift I feel blessed... -

- -

January the 2nd, 2000 - -

The alpha version has been released yesterday. Today I have been busy with moving -the project site to the SourceForge. As for -now there will be the web site available and I will give it a try to set up the -freeglut mailing lists. There will be no CVS access available for now (my dialup -internet connection sucks so badly that I wouldn't be able to work on the project). -After I am done with that, I will try announcing the project on www.opengl.org. - -

Of other things, there has been rumours floating round the routers and hubs about -Mark Kilgard changing the GLUT's license, but this is unconfirmed. It would be really -cool if he did so, there's no better motivation to work than a bit of sound competition. -As for me, I already put too much work into the freeglut project to terminate it just -now. We'll see what happens next. - -

January the 4th, 2000 - -

Ho-ho-ho. Freeglut-1.3 works fine with `Tux the Penguin and the Quest for Herring'. -At least that's what Steve Baker, the author, says. Not only that, Steve has provided -us with the joystick code (from his great PLIB project) and numerous hints and tips -about making freeglut more useful (I will try to put the results of our discussion -on the structure page). - -

As for other issues -- I promise I will start the Win32 port this weekend. -BTW. -- is there a decent cross compiler for Linux that generates Win32 executables, -so that I don't have to use windows for development? And what about Wine OpenGL -support? - -

The package is now some 40kB smaller than the previous one. Did some general -clean ups, removed unnecessary configure scripts in the genfonts directory, -the configure cahce, the Makefiles and so on. Also, I have started introducing -the new internal structure, as described here. - -

January the 6th, 2000 - -

The missing glutInit() issue seems to be solved. Chris Purnell (fxGLUT author) says -that the GLUT window and menu creation functions call glutInit() if the caller didn't -do that before. - -

The enumerations for GLUT_KEY_UP and GLUT_KEY_RIGHT were accidentally swapped. -They should be OK now. Hope the rest is OK :) - -

Added two new API calls to freeglut-1.3 -- glutBitmapHeight() and glutStrokeHeight(), -as suggested by Steve Baker. This won't break the GLUT compatibility a lot, and I've -heard it can be useful. Here you go. - -

The structure plans page has been updated. The numerous -feature hints from opengl-gamedev-l readers have been added. - -

Somebody (Chris?) hinted me that the stroke fonts can be found in the XFree86 -sources. I browsed through it and -- presto. Now I only need to define the stroke fonts -structure (should be very similar to bitmapped one) and write quite a simple parser. - -

I've spent the (late) evening doing the init display string parsing and making -my logics classes homework :) Both is harder than I primarily thought, but fortunately -for me I can commit errors in one of those tasks. Guess which one? Argh. :) - -

January the 8th, 2000 - -

First of all, both the missing glutInit() and glutGet(GLUT_WINDOW_[X|Y]) issues are -fixed now. The first problem was solved thanks to Chris Purnell, who showed me the way -GLUT dealt with the problem. Good for me there's someone who reads it's source code (I -just felt it would be unfair for me to do so :D). The second problem was solved by -adding a XMoveWindow call just after the window creation and initial mapping. This is -strange. Maybe one of the Xlib calls between the creation and mapping spoiled the -window's coordinates? - -

This makes even more GLUT tests work fine. The tests can be found in any decent -GLUT 3.7 distribution. Following tests produce a FAIL message: test18.c (some layer -issues), test19.c (see the GLUT_NORMAL_DAMAGED issue on the progress page), test22.c -(window stacking/visibilty problems), test23.c (glutInitDisplayString() is unfinished), -test25.c (the freeglut fonts differ a bit from GLUT's), test28.c (-iconic handling -is missing(?)). Gee :) - -

I've spent another hour doing the glutInitDisplayString(), but it still is far from -being complete. And I've also started gathering information on doing the game mode -stuff. The video mode enumeration in both cases will be painful. - -

There is a big issue with the window contents redrawing. Right now, it is forced -every time there are no events pending in the main loop. I know it's wrong, but it -without such an approach some of the test programs freeze soon after starting. Could -someone peer-review the main loop code please? - -

I have decided to start the Win32 port this weekend. As for now, the code compiles -under vc++5.0. I will start making it work as soon as I download the pthreads library -and the newest version of GLib for Windows. It was quite a good idea to start the port, -as the Microsoft's compiler generates much more warnings and I had quite a few things -fixed for free. - -

January the 9th, 2000 - -

Doing the Win32 port all the day... Actually, there is enough code to make it work, -however I am sure only of that it compiles (more or less). I need to download the -pthreads-win32 library to get the GLib working first, and somehow I was unable to -do it during the weekend. Once again -- the Win32 port does not work yet. Oh, and -I need adding the __declspec(dllexport) thing... - -

After it starts working, I'll have to clean up the code a bit, I guess... - -

January the 10th, 2000 - -

Here I am at three o'clock am, half-awake, uploading and downloading things for -freeglut. I never thought I'd be able to force myself getting up that early :) - -

January the 16th, 2000 - -

Both the flu and a terrible feeling about the dialup bills made me slow down -a bit, the internet activity I mean :). But here I am again uploading the latest -snapshot. The biggest news about it is the Win32 port working, with nearly all -features you can find in the X11 version implemented (still, it needs some debugging). -For the Unix port, game mode support (loosely based on SDL source code posted at Neal -Tringham's www.pseudonymz.demon.co.uk) and numerous bug fixes have been introduced. - -

In order to compile the Win32 version, you'll need pthreads-win32 library (see -sourceware.cygnus.org), the GLib-1.2.x (www.gtk.org, I've been using the 1.2.6), -a working native compiler (Microsoft VisualC++ 5.0 in my case), and a bit of patience. -See the project files I've supplied for some definitions needed (FREEGLUT_LIBRARY_BUILD -needs to be declared when building the DLL), and don't forget freeglut joystick code -is making use of Win32 multimedia extensions (link against winmm.lib). - -

Be prepared to meet the fact Mesa 3.1 (or at least my compilation) doesn't work very -well with this snapshot -- something's messed up when changing WGL contexts. This is -really strange, as the Microsoft's OpenGL works pretty fine, as does Dominik Behr's -miniGL thing. The assumption is that I've taken some approach that somehow is valid -with Microsoft's drivers, but is not OpenGL conformant. Could anyone check this out -please? - -

My plan for next week is to add some lesser features missing, and start learning -maths as the session at my university is coming in really fast :) This way or another, -expect the next release not any sooner than next weekend (given that no nasty bugs get -digged out). - -

Argh. Don't be surprised if the code doesn't compile under X-11 other than XFree86. -It could fail when trying to include the X11/extensions/xf86vmode.h include header, -in that case just comment out that inclusion line (found in freeglut_internal.h). -Is there any intelligent way to detect the existence of an include header, and if -it's autoconf to be the answer, how to use it? - -

Back to the main page - -

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- -

The Open-Source

- - -

OpenGL Utility Toolkit

- - -

(freeglut 2.0.0)

- - -

Application Programming Interface

- - - - -

Version 4.0

- - - -

The freeglut Programming Consortium

- - - -

July, 2003

- - -

- OpenGL is a trademark of Silicon Graphics, Inc. X Window System is a trademark -of X Consortium, Inc. Spaceball is a registered trademark of Spatial -Systems Inc.
- The authors have taken care in preparation of this documentation but make -no expressed or implied warranty of any kind and assumes no responsibility - for errors or omissions. No liability is assumed for incidental or consequential - damages in connection with or arising from the use of information or programs - contained herein.
-

- -

1.0 - Contents

- 1.0 Contents - -

2.0 Introduction -

- -

3.0 Background -

- -

3.1 Design Philosophy
- 3.2 Conventions
- 3.3 Terminology
- 3.4 Differences from GLUT 3.7

- -

- 4.0 Initialization Functions -

- -

4.1 glutInit
- 4.2 glutInitWindowPosition, glutInitWindowSize
- 4.3 glutInitDisplayMode
- 4.4 glutInitDisplayString

- -

- 5.0 Event Processing Functions -

- -

5.1 glutMainLoop
- 5.2 glutMainLoopEvent
- 5.3 glutLeaveMainLoop

- -

- 6.0 Window Functions -

- -

6.1 glutCreateWindow
- 6.2 glutCreateSubwindow
- 6.3 glutDestroyWindow
- 6.4 glutSetWindow, glutGetWindow
- 6.5 glutSetWindowTitle, glutSetIconTitle
- 6.6 glutReshapeWindow
- 6.7 glutPositionWindow
- 6.8 glutShowWindow, glutHideWindow, glutIconifyWindow
- 6.9 glutPushWindow, glutPopWindow
- 6.10 glutFullScreen

- -

- 7.0 Display Functions -

- -

7.1 glutPostRedisplay
- 7.2 glutPostWindowRedisplay
- 7.3 glutSwapBuffers

- -

- 8.0 Mouse Cursor Functions -

- -

8.1 glutSetCursor
- 8.2 glutWarpPointer

- -

- 9.0 Overlay Functions -

- -

9.1 glutEstablishOverlay
- 9.2 glutRemoveOverlay
- 9.3 glutUseLayer
- 9.4 glutPostOverlayRedisplay
- 9.5 glutPostWindowOverlayRedisplay
- 9.6 glutShowOverlay, glutHideOverlay

- -

- 10.0 Menu Functions -

- -

10.1 glutCreateMenu
- 10.2 glutDestroyMenu
- 10.3 glutGetMenu, glutSetMenu
- 10.4 glutAddMenuEntry
- 10.5 glutAddSubMenu
- 10.6 glutChangeToMenuEntry
- 10.7 glutChangeToSubMenu
- 10.8 glutRemoveMenuItem
- 10.9 glutAttachMenu, glutDetachMenu

- -

- 11.0 Global Callback Registration Functions -

- -

11.1 glutTimerFunc
- 11.2 glutIdleFunc

- -

- 12.0 Window-Specific Callback Registration - Functions -

- -

12.1 glutDisplayFunc
- 12.2 glutOverlayDisplayFunc
- 12.3 glutReshapeFunc
- 12.4 glutCloseFunc
- 12.5 glutKeyboardFunc
- 12.6 glutSpecialFunc
- 12.7 glutKeyboardUpFunc
- 12.8 glutSpecialUpFunc
- 12.9 glutMouseFunc
- 12.10 glutMotionFunc, glutPassiveMotionFunc
- 12.11 glutVisibilityFunc
- 12.12 glutEntryFunc
- 12.13 glutJoystickFunc
- 12.14 glutSpaceballMotionFunc
- 12.15 glutSpaceballRotateFunc
- 12.16 glutSpaceballButtonFunc
- 12.17 glutButtonBoxFunc
- 12.18 glutDialsFunc
- 12.19 glutTabletMotionFunc
- 12.20 glutTabletButtonFunc -
12.21 glutMenuStatusFunc
- 12.22 glutWindowStatusFunc
-

- -

- 13.0 State Setting and Retrieval Functions -

- -

13.1 glutSetOption
- 13.2 glutGet
- 13.3 glutDeviceGet
- 13.4 glutGetModifiers
- 13.5 glutLayerGet
- 13.6 glutExtensionSupported
-13.7 glutGetProcAddress
-

- -

- 14.0 Font Rendering Functions -

- -

14.1 glutBitmapCharacter
- 14.2 glutBitmapString
- 14.3 glutBitmapWidth
- 14.4 glutBitmapLength
- 14.5 glutBitmapHeight
- 14.6 glutStrokeCharacter
- 14.7 glutStrokeString
- 14.8 glutStrokeWidth
- 14.9 glutStrokeLength
- 14.10 glutStrokeHeight

- -

- 15.0 Geometric Object Rendering Functions -

- -

15.1 glutWireSphere, glutSolidSphere -
- 15.2 glutWireTorus, glutSolidTorus
- 15.3 glutWireCone, glutSolidCone
- 15.4 glutWireCube, glutSolidCube
- 15.5 glutWireTetrahedron, glutSolidTetrahedron
- 15.6 glutWireOctahedron, glutSolidOctahedron
- 15.7 glutWireDodecahedron, glutSolidDodecahedron
- 15.8 glutWireIcosahedron, glutSolidIcosahedron
- 15.9 glutWireRhombicDodecahedron, glutSolidRhombicDodecahedron
- 15.10 glutWireTeapot, glutSolidTeapot

- -

- 16.0 Game Mode Functions -

- -

16.1 glutGameModeString
- 16.2 glutEnterGameMode, glutLeaveGameMode
- 16.3 glutGameModeGet

- -

- 17.0 Video Resize Functions -

- -

17.1 glutVideoResizeGet
- 17.2 glutSetupVideoResizing, glutStopVideoResizing
- 17.3 glutVideoResize
- 17.4 glutVideoPan

- -

- 18.0 Color Map Functions -

- -

18.1 glutSetColor, glutGetColor -
- 18.2 glutCopyColormap

- -

- 19.0 Miscellaneous Functions -

- -

19.1 glutIgnoreKeyRepeat, -glutSetKeyRepeat
- 19.2 glutForceJoystickFunc
- 19.3 glutReportErrors

- -

- 20.0 Usage Notes -

- -

21.0 - Implementation Notes -

- -

22.0 GLUT -State -

- -

23.0 - "freeglut.h" Header File -

- -

24.0 References -

- -

25.0 Index -
-
-

- -

2.0 - Introduction

- -

3.0 - Background

- The OpenGL programming world owes a tremendous debt to Mr. Mark J. Kilgard - for writing the OpenGL Utility Toolkit, or GLUT. The GLUT library -of functions allows an application programmer to create, control, and manipulate - windows independent of what operating system the program is running on. - By hiding the dependency on the operating system from the application programmer, - he allowed people to write truly portable OpenGL applications. - -

Mr. Kilgard copyrighted -his library and gave it a rather unusual license. Under his license, -people are allowed freely to copy and distribute the libraries and the source -code, but they are not allowed to modify it. For a long time this did -not matter because the GLUT library worked so well and because Mr. Kilgard -was releasing updates on a regular basis. But with the passage of time, -people started wanting some slightly different behaviours in their windowing -system. When Mr. Kilgard stopped supporting the GLUT library in 1999, -having moved on to bigger and better things, this started to become a problem. -

- -

In December 1999, -Mr. Pawel Olzsta started work on an open-source clone of the GLUT library. -This open-source clone, which does not use any of the GLUT source code, has -evolved into the present freeglut library. This documentation -specifies the application program interface to the freeglut library. -

- -

3.1 Design Philosophy

- -

3.2 Conventions

- -

3.3 Terminology

- -

3.4 Differences from GLUT 3.7

- Since the freeglut library was developed in order to update GLUT, - it is natural that there will be some differences between the two. -Each function in the API notes any differences between the GLUT and the -freeglut function behaviours. The important ones are summarized -here. -

3.4.1 glutMainLoop Behaviour

- One of the commonest complaints about the GLUT library was that once an -application called "glutMainLoop", it never got control back. -There was no way for an application to loop in GLUT for a while, possibly -as a subloop while a specific window was open, and then return to the calling -function. A new function, "glutMainLoopEvent", has been added -to allow this functionality. Another function, "glutLeaveMainLoop -", has also been added to allow the application to tell freeglut to clean -up and close down. -

3.4.2 Action on Window Closure

- Another difficulty with GLUT, especially with multiple-window programs, -is that if the user clicks on the "x" in the window header the application -exits immediately. The application programmer can now set an option, -" GLUT_ACTION_ON_WINDOW_CLOSE", to specify whether execution should -continue, whether GLUT should return control to the main program, or whether -GLUT should simply exit (the default). - -

3.4.3 Changes to Callbacks
-

- Several new callbacks have been added and several callbacks which were specific -to Silicon Graphics hardware have not been implemented. Most or all -of the new callbacks are listed in the GLUT Version 4 "glut.h" header file -but did not make it into the documentation. The new callbacks consist -of regular and special key release callbacks, a joystick callback, a window -status callback, window closure callbacks, a menu closure callback, and a -mouse wheel callback. Unsupported callbacks are the three Spaceball -callbacks, the ButtonBox callback, and the two Tablet -callbacks. If the user has a need for an unsupported callback he should -contact the freeglut development team.
- -

3.4.4 String Rendering
-

- New functions have been added to render full character strings (including -carriage returns) rather than rendering one character at a time. More -functions return the widths of character strings and the font heights, in -pixels for bitmapped fonts and in OpenGL units for the stroke fonts.
- -

3.4.5 Geometry Rendering
-

- Functions have been added to render a wireframe and a solid rhombic -dodecahedron, a cylinder, and a Sierpinski sponge. -

3.4.5 Extension Function Queries

- glutGetProcAddress is a wrapper for the glXGetProcAddressARB and wglGetProcAddress -functions. -

4.0 - Initialization Functions

- -

4.1 glutInit

- -

4.2 glutInitWindowPosition, glutInitWindowSize

- The "glutInitWindowPosition " and "glutInitWindowSize -" functions specify a desired position and size for windows that freeglut - will create in the future. -

Usage

- -

void glutInitWindowPosition ( int -x, int y ) ;
- void glutInitWindowSize ( int width, -int height ) ;

- -

Description

- -

The "glutInitWindowPosition - " and "glutInitWindowSize" functions specify a desired position -and size for windows that freeglut will create in the future. -The position is measured in pixels from the upper left hand corner of the -screen, with "x" increasing to the right and "y" increasing towards the bottom -of the screen. The size is measured in pixels. Freeglut - does not promise to follow these specifications in creating its windows, -it certainly makes an attempt to.

- -

The position and size of a window are -a matter of some subtlety. Most windows have a usable area surrounded -by a border and with a title bar on the top. The border and title bar -are commonly called "decorations." The position of the window unfortunately -varies with the operating system. On Linux, it is the coordinates of -the upper left-hand corner of its decorations. On Windows, it is the -coordinates of the upper left hand corner of its usable interior. For -both operating systems, the size of the window is the size of the usable interior. -

- -

Windows has some additional quirks which -the application programmer should know about. First, the minimum y-coordinate -of a window decoration is zero. (This is a feature of freeglut - and can be adjusted if so desired.) Second, there appears to be a -minimum window width on Windows which is 104 pixels. The user may specify -a smaller width, but the Windows system calls ignore it. It is also -impossible to make a window narrower than this by dragging on its corner. -

- -

Changes From GLUT

- -

For some reason, GLUT is not affected -by the 104-pixel minimum window width. If the user clicks on the corner -of a window which is narrower than this amount, the window will immediately -snap out to this width, but the application can call "glutReshapeWindow - " and make a window narrower again.

- -

4.3 glutInitDisplayMode

- -

4.4 glutInitDisplayString

- -

5.0 - Event Processing Functions

- After an application has finished initializing its windows and menus, it - enters an event loop. Within this loop, freeglut polls the -data entry devices (keyboard, mouse, etc.) and calls the application's appropriate -callbacks. -

In GLUT, control never returned from -the event loop (as invoked by the "glutMainLoop" function) to the -calling function. This prevented an application from having re-entrant -code, in which GLUT could be invoked from within a callback, and it prevented -the application from doing any post-processing (such as freeing allocated -memory) after GLUT had closed down. Freeglut allows the application -programmer to specify more direct control over the event loop by means of -two new functions. The first, "glutMainLoopEvent", processes -a single iteration of the event loop and allows the application to use a different -event loop controller or to contain re-entrant code. The second, "-glutLeaveMainLoop", causes the event loop to exit nicely; this is preferable -to the application's calling "exit" from within a GLUT callback. -

- -

5.1 glutMainLoop

- The "glutMainLoop" function enters the event loop. - -

Usage

- -

void glutMainLoop ( void ) ; -

- -

Description

- -

The "glutMainLoop" function -causes the program to enter the window event loop. An application should -call this function at most once. It will call any application callback -functions as required to process mouse clicks, mouse motion, key presses, -and so on.

- -

Changes From GLUT

- -

In GLUT, there was absolutely no way -for the application programmer to have control return from the "glutMainLoop - " function to the calling function. Freeglut allows the programmer -to force this by setting the "GLUT_ACTION_ON_WINDOW_CLOSE" option -and invoking the "glutLeaveMainLoop" function from one of the callbacks. - Stopping the program this way is preferable to simply calling "exit - " from within a callback because this allows freeglut to free allocated - memory and otherwise clean up after itself. (I know I just said this, - but I think it is important enough that it bears repeating.)

- -

5.2 glutMainLoopEvent

- The "glutMainLoopEvent" function processes a single iteration -in the freeglut event loop. -

Usage

- -

void glutMainLoopEvent ( void ) ; -

- -

Description

- -

The "glutMainLoopEvent - " function causes freeglut to process one iteration's worth of events -in its event loop. This allows the application to control its own event -loop and still use the freeglut windowing system.

- -

Changes From GLUT

- -

GLUT does not include this function. -

- -

5.3 glutLeaveMainLoop

- The "glutLeaveMainLoop" function causes freeglut to stop - its event loop. -

Usage

- -

void glutLeaveMainLoop ( void ) ; -

- -

Description

- -

The "glutLeaveMainLoop - " function causes freeglut to stop the event loop. If the -" GLUT_ACTION_ON_WINDOW_CLOSE" option has been set to "GLUT_ACTION_CONTINUE_EXECUTION - ", control will return to the function which called "glutMainLoop - "; otherwise the application will exit.

- -

If the application has two nested calls -to "glutMainLoop" and calls "glutLeaveMainLoop", the behaviour -of freeglut is undefined. It may leave only the inner nested -loop or it may leave both loops. If the reader has a strong preference -for one behaviour over the other he should contact the freeglut Programming -Consortium and ask for the code to be fixed.

- -

Changes From GLUT

- -

GLUT does not include this function. -

- -

6.0 - Window Functions

- -

6.1 glutCreateWindow

- -

6.2 glutCreateSubwindow

- -

6.3 glutDestroyWindow

- -

6.4 glutSetWindow, glutGetWindow

- -

6.5 glutSetWindowTitle, glutSetIconTitle

- -

6.6 glutReshapeWindow

- -

6.7 glutPositionWindow

- -

6.8 glutShowWindow, glutHideWindow, -glutIconifyWindow

- -

6.9 glutPushWindow, glutPopWindow

- -

6.10 glutFullScreen

- -

7.0 - Display Functions

- -

7.1 glutPostRedisplay

- -

7.2 glutPostWindowRedisplay

- -

7.3 glutSwapBuffers

- -

8.0 - Mouse Cursor Functions

- -

8.1 glutSetCursor

- -

8.2 glutWarpPointer

- -

9.0 - Overlay Functions

- Freeglut does not allow overlays, although it does "answer the mail" - with function stubs so that GLUT-based programs can compile and link against - freeglut without modification. -If the reader needs overlays, he should contact the freeglut Programming -Consortium and ask for them to be implemented. He should also be prepared -to assist in the implementation. -

9.1 glutEstablishOverlay

- The "glutEstablishOverlay" function is not implemented in freeglut - . -

Usage

- -

void glutEstablishOverlay ( void -) ;

- -

Description

- -

The "glutEstablishOverlay" function -is not implemented in freeglut.

- -

Changes From GLUT

- -

GLUT implements this function.

- -

9.2 glutRemoveOverlay

- The "glutRemoveOverlay" function is not implemented in freeglut - . -

Usage

- -

void glutRemoveOverlay ( void ) ; -

- -

Description

- -

The "glutRemoveOverlay" function -is not implemented in freeglut.

- -

Changes From GLUT

- -

GLUT implements this function.

- -

9.3 glutUseLayer

- The "glutUseLayer" function is not implemented in freeglut - . -

Usage

- -

void glutUseLayer ( GLenum -layer ) ;

- -

Description

- -

The "glutUseLayer" function -is not implemented in freeglut.

- -

Changes From GLUT

- -

GLUT implements this function.

- -

9.4 glutPostOverlayRedisplay

- The "glutPostOverlayRedisplay " function is not implemented in - freeglut. - -

Usage

- -

void glutPostOverlayRedisplay ( void -) ;

- -

Description

- -

The "glutPostOverlayRedisplay - " function is not implemented in freeglut.

- -

Changes From GLUT

- -

GLUT implements this function.

- -

9.5 glutPostWindowOverlayRedisplay

- The "glutPostWindowOverlayRedisplay " function is not implemented - in freeglut. -

Usage

- -

void glutPostWindowOverlayRedisplay -( int window ) ;

- -

Description

- -

The "glutPostWindowOverlayRedisplay - " function is not implemented in freeglut.

- -

Changes From GLUT

- -

GLUT implements this function.

- -

9.6 glutShowOverlay, glutHideOverlay

- The "glutShowOverlay" and "glutHideOverlay" functions -are not implemented in freeglut . - -

Usage

- -

void glutShowOverlay( void ) ; -
- void glutHideOverlay( void ) ; -

- -

Description

- -

The "glutShowOverlay" and "-glutHideOverlay" functions are not implemented in freeglut . -

- -

Changes From GLUT

- -

GLUT implements these functions.

- -

10.0 - Menu Functions

- -

10.1 glutCreateMenu

- -

10.2 glutDestroyMenu

- -

10.3 glutGetMenu, glutSetMenu

- -

10.4 glutAddMenuEntry

- -

10.5 glutAddSubMenu

- -

10.6 glutChangeToMenuEntry

- -

10.7 glutChangeToSubMenu

- -

10.8 glutRemoveMenuItem

- -

10.9 glutAttachMenu, glutDetachMenu

- -

11.0 - Global Callback Registration Functions

- -

11.1 glutTimerFunc

- -

11.2 glutIdleFunc

- The "glutIdleFunc" function sets the global idle callback. -Freeglut calls the idle callback when there are no inputs from the user. - -

Usage

- -

void glutIdleFunc ( void (*func) -( void ) ) ;

- -

func The new -global idle callback function

- -

Description

- -

The "glutIdleFunc" function -specifies the function that freeglut will call to perform background -processing tasks such as continuous animation when window system events are -not being received. If enabled, this function is called continuously -from freeglut while no events are received. The callback function -has no parameters and returns no value. Freeglut does not change -the current window or the current menu before invoking the idle -callback; programs with multiple windows or menus must explicitly set the - current window and current menu - and not rely on its current setting.
- The amount of computation and rendering done in an idle -callback should be minimized to avoid affecting the program's interactive - response. In general, no more than a single frame of rendering should - be done in a single invocation of an idle callback.
- Calling "glutIdleFunc" with a NULL argument -disables the call to an idle callback.

- -

Changes From GLUT

- -

Application programmers should note that -if they have specified the "continue execution" action on window closure, - freeglut will continue to call the -idle callback after the user has closed a window by clicking on the "x" in -the window header bar. If the idle callback renders a particular window -(this is considered bad form but is frequently done anyway), the programmer -should supply a window closure callback for that window which changes or disables -the idle callback.

- -

12.0 - Window-Specific Callback Registration Functions

- -

12.1 glutDisplayFunc

- -

12.2 glutOverlayDisplayFunc

- -

12.3 glutReshapeFunc

- -

12.4 glutCloseFunc

- -

12.5 glutKeyboardFunc

- -

12.6 glutSpecialFunc

- The "glutSpecialFunc" function sets the window's special key press - callback. Freeglut calls the special key press callback when the -user presses a special key. -

Usage

- -

void glutSpecialFunc ( void (*func) -( int key, int x, int y ) ) ;

- -

func    The window's -new special key press callback function
- key     The -key whose press triggers the callback
- x       -The x-coordinate of the mouse relative -to the window at the time the key is pressed
- y       -The y-coordinate of the mouse relative -to the window at the time the key is pressed

- -

Description

- -

The "glutSpecialFunc" -function specifies the function that freeglut will call when the user -presses a special key on the keyboard. The callback function has one -argument: the name of the function to be invoked ("called back") at -the time at which the special key is pressed. The function returns no -value. Freeglut sets the current window to the window -which is active when the callback is invoked. "Special keys" are the -function keys, the arrow keys, the Page Up and Page Down keys, and the Insert -key. The Delete key is considered to be a regular key.
- Calling "glutSpecialUpFunc" with a NULL argument -disables the call to the window's special key press callback.

- -

The "key -" argument may take one of the following defined constant values:

- -

GLUT_KEY_F1, GLUT_KEY_F2, ..., GLUT_KEY_F12 - - F1 through F12 keys
GLUT_KEY_PAGE_UP, GLUT_KEY_PAGE_DOWN - - Page Up and Page Down keys
GLUT_KEY_HOME, GLUT_KEY_END - - Home and End keys
GLUT_KEY_LEFT, GLUT_KEY_RIGHT, GLUT_KEY_UP, GLUT_KEY_DOWN - - arrow keys
GLUT_KEY_INSERT - - Insert key

- Changes From GLUT -

None.

- -

12.7 glutKeyboardUpFunc

- The "glutKeyboardUpFunc" function sets the window's key release - callback. Freeglut calls the key release callback when the user releases -a key. -

Usage

- -

void glutKeyboardUpFunc ( void (*func) -( unsigned char key, int x, int y ) ) ;

- -

func    The window's -new key release callback function
- key     The -key whose release triggers the callback
- x       -The x-coordinate of the mouse relative -to the window at the time the key is released
- y       -The y-coordinate of the mouse relative -to the window at the time the key is released

- -

Description

- -

The "glutKeyboardUpFunc -" function specifies the function that freeglut will call when the -user releases a key from the keyboard. The callback function has one -argument: the name of the function to be invoked ("called back") at -the time at which the key is released. The function returns no value. - Freeglut sets the current window - to the window which is active when the callback is invoked.
- While freeglut checks for upper or lower case -letters, it does not do so for non-alphabetical characters. Nor does -it account for the Caps-Lock key being on. The operating system may -send some unexpected characters to freeglut, such as "8" when the -user is pressing the Shift key. Freeglut also invokes the callback -when the user releases the Control, Alt, or Shift keys, among others. -Releasing the Delete key causes this function to be invoked with a value -of 127 for "key".
- Calling "glutKeyboardUpFunc" with a NULL argument -disables the call to the window's key release callback.

- -

Changes From GLUT

- -

This function is not implemented in GLUT -versions before Version 4. It has been designed to be as close to GLUT -as possible. Users who find differences should contact the - freeglut Programming Consortium to -have them fixed.

- -

12.8 glutSpecialUpFunc

- The "glutSpecialUpFunc" function sets the window's special key -release callback. Freeglut calls the special key release callback -when the user releases a special key. -

Usage

- -

void glutSpecialUpFunc ( void (*func) -( int key, int x, int y ) ) ;

- -

func    The window's -new special key release callback function
- key     The -key whose release triggers the callback
- x       -The x-coordinate of the mouse relative -to the window at the time the key is released
- y       -The y-coordinate of the mouse relative -to the window at the time the key is released

- -

Description

- -

The "glutSpecialUpFunc -" function specifies the function that freeglut will call when the -user releases a special key from the keyboard. The callback function -has one argument: the name of the function to be invoked ("called back") -at the time at which the special key is released. The function returns -no value. Freeglut sets the current window to the window -which is active when the callback is invoked. "Special keys" are the -function keys, the arrow keys, the Page Up and Page Down keys, and the Insert -key. The Delete key is considered to be a regular key.
- Calling "glutSpecialUpFunc" with a NULL argument -disables the call to the window's special key release callback.

- -

The "key -" argument may take one of the following defined constant values:

- -

GLUT_KEY_F1, GLUT_KEY_F2, ..., GLUT_KEY_F12 - - F1 through F12 keys
GLUT_KEY_PAGE_UP, GLUT_KEY_PAGE_DOWN - - Page Up and Page Down keys
GLUT_KEY_HOME, GLUT_KEY_END - - Home and End keys
GLUT_KEY_LEFT, GLUT_KEY_RIGHT, GLUT_KEY_UP, GLUT_KEY_DOWN - - arrow keys
GLUT_KEY_INSERT - - Insert key

- Changes From GLUT -

- -

12.9 glutMouseFunc

- -

12.10 glutMotionFunc, glutPassiveMotionFunc

- -

12.11 glutVisibilityFunc

- -

12.12 glutEntryFunc

- -

12.13 glutJoystickFunc

- -

12.14 glutSpaceballMotionFunc

- The "glutSpaceballMotionFunc" function is not implemented in - freeglut, although the library does -"answer the mail" to the extent that a call to the function will not produce -an error.. -

Usage

- -

void glutSpaceballMotionFunc ( void -(* callback)( int x, int y, int z ) ) ;

- -

Description

- -

The "glutSpaceballMotionFunc - " function is not implemented in freeglut.

- -

Changes From GLUT

- -

GLUT implements this function.

- -

12.15 glutSpaceballRotateFunc

- The "glutSpaceballRotateFunc" function is not implemented in - freeglut, although the library does -"answer the mail" to the extent that a call to the function will not produce -an error.. -

Usage

- -

void glutSpaceballRotateFunc ( void -(* callback)( int x, int y, int z ) ) ;

- -

Description

- -

The "glutSpaceballRotateFunc - " function is not implemented in freeglut.

- -

Changes From GLUT

- -

GLUT implements this function.

- -

12.16 glutSpaceballButtonFunc

- The "glutSpaceballButtonFunc" function is not implemented in - freeglut, although the library does -"answer the mail" to the extent that a call to the function will not produce -an error.. -

Usage

- -

void glutSpaceballButtonFunc ( void -(* callback)( int button, int updown ) ) ;

- -

Description

- -

The "glutSpaceballButtonFunc - " function is not implemented in freeglut.

- -

Changes From GLUT

- -

GLUT implements this function.

- -

12.17 glutButtonBoxFunc

- The "glutSpaceballButtonBoxFunc" function is not implemented -in freeglut, although the library does "answer the mail" to the extent -that a call to the function will not produce an error.. - -

Usage

- -

void glutSpaceballButtonBoxFunc ( -void (* callback)( int button, int updown ) ) ;

- -

Description

- -

The "glutSpaceballButtonBoxFunc - " function is not implemented in freeglut.

- -

Changes From GLUT

- -

GLUT implements this function.

- -

12.18 glutDialsFunc

- The "glutDialsFunc" function is not implemented in freeglut - , although the library does "answer the mail" to the extent that a call -to the function will not produce an error.. - -

Usage

- -

void glutDialsFunc ( void (* callback)( -int dial, int value ) ) ;

- -

Description

- -

The "glutDialsFunc" function -is not implemented in freeglut.

- -

Changes From GLUT

- -

GLUT implements this function.

- -

12.19 glutTabletMotionFunc

- The "glutTabletMotionFunc" function is not implemented in - freeglut, although the library does "answer the mail" to the extent -that a call to the function will not produce an error.. - -

Usage

- -

void glutTabletMotionFunc ( void -(* callback)( int x, int y ) ) ;

- -

Description

- -

The "glutTabletMotionFunc" function -is not implemented in freeglut.

- -

Changes From GLUT

- -

GLUT implements this function.

- -

12.20 glutTabletButtonFunc

- The "glutTabletButtonFunc" function is not implemented in - freeglut, although the library does "answer the mail" to the extent -that a call to the function will not produce an error.. - -

Usage

- -

void glutTabletButtonFunc ( void -(* callback)( int button, int updown, int x, int y ) ) ;

- -

Description

- -

The "glutTabletButtonFunc" function -is not implemented in freeglut.

- -

Changes From GLUT

- -

GLUT implements this function.

- -

12.21 glutMenuStatusFunc

- -

12.22 glutWindowStatusFunc

- -

13.0 - State Setting and Retrieval Functions

- -

13.1 glutSetOption

- -

13.2 glutGet

- - -

-The following state variables may be queried with "glutGet". -The returned value is an integer. -

- -

-These queries are with respect to the current window: -

- -

GLUT_WINDOW_X - window X position -
GLUT_WINDOW_Y - window Y position -
GLUT_WINDOW_WIDTH - window width -
GLUT_WINDOW_HEIGHT - window height -
GLUT_WINDOW_BUFFER_SIZE - number of color or color index bits per pixel -
GLUT_WINDOW_STENCIL_SIZE - number of bits per stencil value -
GLUT_WINDOW_DEPTH_SIZE - number of bits per depth value -
GLUT_WINDOW_RED_SIZE - number of bits per red value -
GLUT_WINDOW_GREEN_SIZE - number of bits per green value -
GLUT_WINDOW_BLUE_SIZE - number of bits per blue value -
GLUT_WINDOW_ALPHA_SIZE - number of bits per alpha value -
GLUT_WINDOW_ACCUM_RED_SIZE - number of red bits in the accumulation buffer -
GLUT_WINDOW_ACCUM_GREEN_SIZE - number of green bits in the accumulation buffer -
GLUT_WINDOW_ACCUM_BLUE_SIZE - number of blue bits in the accumulation buffer -
GLUT_WINDOW_ACCUM_ALPHA_SIZE - number of alpha bits in the accumulation buffer -
GLUT_WINDOW_DOUBLEBUFFER - 1 if the color buffer is double buffered, 0 otherwise -
GLUT_WINDOW_RGBA - 1 if the color buffers are RGB[A], 0 for color index -
GLUT_WINDOW_PARENT - parent window ID -
GLUT_WINDOW_NUM_CHILDREN - number of child windows -
GLUT_WINDOW_COLORMAP_SIZE - number of entries in the window's colormap -
GLUT_WINDOW_NUM_SAMPLES - number of samples per pixel if using multisampling -
GLUT_WINDOW_STEREO - 1 if the window supports stereo, 0 otherwise -
GLUT_WINDOW_CURSOR - current cursor -
GLUT_WINDOW_FORMAT_ID - on Windows, return the pixel format number of the current window -

- -

-These queries do not depend on the current window. -

- -

GLUT_SCREEN_WIDTH - width of the screen in pixels -
GLUT_SCREEN_HEIGHT - height of the screen in pixels -
GLUT_SCREEN_WIDTH_MM - width of the screen in millimeters -
GLUT_SCREEN_HEIGHT_MM - height of the screen in millimeters -
GLUT_MENU_NUM_ITEMS - number of items in the current menu -
GLUT_DISPLAY_MODE_POSSIBLE - return 1 if the current display mode is supported, 0 otherwise -
GLUT_INIT_WINDOW_X - X position last set by glutInitWindowPosition -
GLUT_INIT_WINDOW_Y - Y position last set by glutInitWindowPosition -
GLUT_INIT_WINDOW_WIDTH - width last set by glutInitWindowSize -
GLUT_INIT_WINDOW_HEIGHT - height last set by glutInitWindowSize -
GLUT_INIT_DISPLAY_MODE - display mode last set by glutInitDisplayMode -
GLUT_ELAPSED_TIME - time (in milliseconds) elapsed since glutInit or glutGet(GLUT_ELAPSED_TIME) was first called -
GLUT_INIT_STATE - ? -
GLUT_VERSION - Return value will be X*10000+Y*100+Z where X is the - major version, Y is the minor version and Z is the patch level. - This query is only supported in freeglut (version 2.0.0 or later). -

- - -

13.3 glutDeviceGet

- -

13.4 glutGetModifiers

- -

13.5 glutLayerGet

- -

13.6 glutExtensionSupported

- -

13.7 glutGetProcAddress

glutGetProcAddress returns -a pointer to a named GL or freeglut function.

Usage

void *glutGetProcAddress ( const -char *procName ) ;

procName -Name of an OpenGL or GLUT function. -

Description

glutGetProcAddress is useful -for dealing with OpenGL extensions. If an application calls OpenGL extension -functions directly, that application will only link/run with an OpenGL library -that supports the extension. By using a function pointer returned from glutGetProcAddress(), -the application will avoid this hard dependency and be more portable and interoperate -better with various implementations of OpenGL.

Both OpenGL functions and freeglut -functions can be queried with this function.

Changes From GLUT

- -

GLUT does not include this function. -

- -

14.0 - Font Rendering Functions

- Freeglut supports two types of font rendering: bitmap fonts, - which are rendered using the "glBitmap" function call, and stroke - fonts, which are rendered as sequences of OpenGL line segments. Because - they are rendered as bitmaps, the bitmap fonts tend to render more quickly - than stroke fonts, but they are less flexible in terms of scaling and rendering. - Bitmap font characters are positioned with calls to the "glRasterPos* - " functions while stroke font characters use the OpenGL transformations -to position characters. -

It should be noted -that freeglut fonts are similar but not identical to GLUT fonts. -At the moment, freeglut fonts do not support the "`" (backquote) and -"|" (vertical line) characters; in their place it renders asterisks.

- -

Freeglut supports -the following bitmap fonts:

- -

GLUT_BITMAP_8_BY_13 - A variable-width font with every character - fitting in a rectangle of 13 pixels high by at most 8 pixels wide.
GLUT_BITMAP_9_BY_15 - A variable-width font with every character - fitting in a rectangle of 15 pixels high by at most 9 pixels wide.
GLUT_BITMAP_TIMES_ROMAN_10 - A 10-point variable-width Times -Roman font.
GLUT_BITMAP_TIMES_ROMAN_24 - A 24-point variable-width Times -Roman font.
GLUT_BITMAP_HELVETICA_10 - A 10-point variable-width Helvetica - font.
GLUT_BITMAP_HELVETICA_12 - A 12-point variable-width Helvetica - font.
GLUT_BITMAP_HELVETICA_18 - A 18-point variable-width Helvetica - font.

- Freeglut calls "glRasterPos4v" to advance the cursor by -the width of a character and to render carriage returns when appropriate. - It does not use any display lists in it rendering in bitmap fonts. - -

Freeglut supports -the following stroke fonts:

- -

GLUT_STROKE_ROMAN - A proportionally-spaced Roman Simplex -font
GLUT_STROKE_MONO_ROMAN - A fixed-width Roman Simplex font

- Freeglut does not use any display lists in its rendering of stroke - fonts. It calls "glTranslatef" to advance the cursor by the -width of a character and to render carriage returns when appropriate. - -

14.1 glutBitmapCharacter

- The "glutBitmapCharacter" function renders a single bitmapped -character in the current window using the specified font. - -

Usage

- -

void glutBitmapCharacter ( void *font, -int character ) ;

- -

font -The bitmapped font to use in rendering -the character
- character The ASCII -code of the character to be rendered

- -

Description

- -

The "glutBitmapCharacter - " function renders the given character in the specified bitmap font. - Freeglut automatically sets the necessary -pixel unpack storage modes and restores the existing modes when it has finished. -Before the first call to "glutBitMapCharacter " the application -program should call "glRasterPos*" to set the position of the character -in the window. The "glutBitmapCharacter " function advances -the cursor position as part of its call to "glBitmap " and so the -application does not need to call "glRasterPos*" again for successive -characters on the same line.

- -

Changes From GLUT

- -

Nonexistent characters are rendered as -asterisks. The rendering position in freeglut is apparently off -from GLUT's position by a few pixels vertically and one or two pixels horizontally. -

- -

14.2 glutBitmapString

- The "glutBitmapString" function renders a string of bitmapped -characters in the current window using the specified font. - -

Usage

- -

void glutBitmapString ( void *font, -char *string ) ;

- -

font -The bitmapped font to use in rendering -the character string
- string String -of characters to be rendered

- -

Description

- -

The "glutBitmapString - " function renders the given character string in the specified bitmap font. - Freeglut automatically sets the necessary -pixel unpack storage modes and restores the existing modes when it has finished. -Before calling "glutBitMapString" the application program should -call "glRasterPos*" to set the position of the string in the window. -The "glutBitmapString" function handles carriage returns. -Nonexistent characters are rendered as asterisks.

- -

Changes From GLUT

- -

GLUT does not include this function. -

- -

14.3 glutBitmapWidth

- The "glutBitmapWidth" function returns the width in pixels of -a single bitmapped character in the specified font. - -

Usage

- -

int glutBitmapWidth ( void *font, -int character ) ;

- -

font -The bitmapped font to use in calculating -the character width
- character The ASCII -code of the character

- -

Description

- -

The "glutBitmapWidth" -function returns the width of the given character in the specified bitmap -font. Because the font is bitmapped, the width is an exact integer. -

- -

Changes From GLUT

- -

Nonexistent characters return the width -of an asterisk.

- -

14.4 glutBitmapLength

- The "glutBitmapLength" function returns the width in pixels of -a string of bitmapped characters in the specified font. - -

Usage

- -

int glutBitmapLength ( void *font, -char *string ) ;

- -

font The bitmapped -font to use in calculating the character width
- string String of characters -whose width is to be calculated

- -

Description

- -

The "glutBitmapLength - " function returns the width in pixels of the given character string in -the specified bitmap font. Because the font is bitmapped, the width -is an exact integer: the return value is identical to the sum of the -character widths returned by a series of calls to "glutBitmapWidth -". The width of nonexistent characters is counted to be the width of -an asterisk.

- -

If the string contains -one or more carriage returns, freeglut calculates the widths in pixels -of the lines separately and returns the largest width.

- -

Changes From GLUT

- -

GLUT does not include this function. -

- -

14.5 glutBitmapHeight

- The "glutBitmapHeight" function returns the height in pixels of - the specified font. -

Usage

- -

int glutBitmapHeight ( void *font -) ;

- -

font -The bitmapped font to use in calculating -the character height

- -

Description

- -

The "glutBitmapHeight - " function returns the height of a character in the specified bitmap font. -Because the font is bitmapped, the height is an exact integer. The fonts -are designed such that all characters have (nominally) the same height. -

- -

Changes From GLUT

- -

GLUT does not include this function. -

- -

14.6 glutStrokeCharacter

- The "glutStrokeCharacter" function renders a single stroke character - in the current window using the specified font. - -

Usage

- -

void glutStrokeCharacter ( void *font, -int character ) ;

- -

font -The stroke font to use in rendering -the character
- character The ASCII -code of the character to be rendered

- -

Description

- -

The "glutStrokeCharacter - " function renders the given character in the specified stroke font. -Before the first call to "glutStrokeCharacter" the application program -should call the OpenGL transformation (positioning and scaling) functions -to set the position of the character in the window. The "glutStrokeCharacter - " function advances the cursor position by a call to "glTranslatef - " and so the application does not need to call the OpenGL positioning functions - again for successive characters on the same line.

- -

Changes From GLUT

- -

Nonexistent characters are rendered as -asterisks.

- -

14.7 glutStrokeString

- The "glutStrokeString" function renders a string of characters -in the current window using the specified stroke font. - -

Usage

- -

void glutStrokeString ( void *font, -char *string ) ;

- -

font -The stroke font to use in rendering -the character string
- string String -of characters to be rendered

- -

Description

- -

The "glutStrokeString - " function renders the given character string in the specified stroke font. -Before calling "glutStrokeString" the application program should -call the OpenGL transformation (positioning and scaling) functions to set -the position of the string in the window. The "glutStrokeString - " function handles carriage returns. Nonexistent characters are rendered -as asterisks.

- -

Changes From GLUT

- -

GLUT does not include this function. -

- -

14.8 glutStrokeWidth

- The "glutStrokeWidth" function returns the width in pixels of -a single character in the specified stroke font. - -

Usage

- -

int glutStrokeWidth ( void *font, -int character ) ;

- -

font -The stroke font to use in calculating -the character width
- character The ASCII -code of the character

- -

Description

- -

The "glutStrokeWidth" -function returns the width of the given character in the specified stroke -font. Because the font is a stroke font, the width is actually a floating-point -number; the function rounds it to the nearest integer for the return value. -

- -

Changes From GLUT

- -

Nonexistent characters return the width -of an asterisk.

- -

14.9 glutStrokeLength

- The "glutStrokeLength" function returns the width in pixels of -a string of characters in the specified stroke font. - -

Usage

- -

int glutStrokeLength ( void *font, -char *string ) ;

- -

font The stroke -font to use in calculating the character width
- string String of characters -whose width is to be calculated

- -

Description

- -

The "glutStrokeLength - " function returns the width in pixels of the given character string in -the specified stroke font. Because the font is a stroke font, the width -of an individual character is a floating-point number. Freeglut - adds the floating-point widths and rounds the funal result to return the -integer value. Thus the return value may differ from the sum of the -character widths returned by a series of calls to "glutStrokeWidth - ". The width of nonexistent characters is counted to be the width -of an asterisk.

- -

If the string contains -one or more carriage returns, freeglut calculates the widths in pixels -of the lines separately and returns the largest width.

- -

Changes From GLUT

- -

GLUT does not include this function. -

- -

14.10 glutStrokeHeight

- The "glutStrokeHeight" function returns the height in pixels of - the specified font. -

Usage

- -

GLfloat glutStrokeHeight ( void *font -) ;

- -

font -The stroke font to use in calculating -the character height

- -

Description

- -

The "glutStrokeHeight - " function returns the height of a character in the specified stroke font. -The application programmer should note that, unlike the other freeglut - font functions, this one returns a floating-point number. The fonts -are designed such that all characters have (nominally) the same height.

- -

Changes From GLUT

- -

GLUT does not include this function. -

- -

15.0 - Geometric Object Rendering Functions

- Freeglut includes eighteen routines for generating easily-recognizable - 3-d geometric objects. These routines are effectively the same ones - that are included in the GLUT library, and reflect the functionality available - in the aux toolkit described in the OpenGL Programmer's Guide - . They are included to allow programmers to create with a single -line of code a three-dimensional object which can be used to test a variety -of OpenGL functionality. None of the routines generates a display list -for the object which it draws. The functions generate normals appropriate -for lighting but, except for the teapon functions, do not generate texture -coordinates. -

15.1 glutWireSphere, glutSolidSphere

- The "glutWireSphere" and "glutSolidSphere" functions -draw a wireframe and solid sphere respectively. - -

Usage

- -

void glutWireSphere ( GLdouble dRadius, -GLint slices, GLint stacks ) ;

- -

void glutSolidSphere ( GLdouble dRadius, -GLint slices, GLint stacks ) ;

- -

dRadius -The desired radius of the sphere

- -

slices -The desired number of slices (divisions -in the longitudinal direction) in the sphere

- -

stacks -The desired number of stacks (divisions -in the latitudinal direction) in the sphere. The number of points in -this direction, including the north and south poles, is stacks+1 -

- -

Description

- -

The "glutWireSphere" and "- glutSolidSphere" functions render a sphere centered at the origin -of the modeling coordinate system. The north and south poles of the -sphere are on the positive and negative Z-axes respectively and the prime -meridian crosses the positive X-axis.

- -

Changes From GLUT

- -

None that we know of.

- -

15.2 glutWireTorus, glutSolidTorus

- The "glutWireTorus" and "glutSolidTorus" functions draw - a wireframe and solid torus (donut shape) respectively. - -

Usage

- -

void glutWireTorus ( GLdouble dInnerRadius, -GLdouble dOuterRadius, GLint nSides, GLint nRings ) ;

- -

void glutSolidTorus ( GLdouble dInnerRadius, -GLdouble dOuterRadius, GLint nSides, GLint nRings ) ;

- -

dInnerRadius -The desired inner radius of the torus, -from the origin to the circle defining the centers of the outer circles

- -

dOuterRadius -The desired outer radius of the torus, -from the center of the outer circle to the actual surface of the torus

- -

nSides -The desired number of segments in a -single outer circle of the torus

- -

nRings -The desired number of outer circles -around the origin of the torus

- -

Description

- -

The "glutWireTorus" and "- glutSolidTorus" functions render a torus centered at the origin of -the modeling coordinate system. The torus is circularly symmetric about -the Z-axis and starts at the positive X-axis.

- -

Changes From GLUT

- -

None that we know of.

- -

15.3 glutWireCone, glutSolidCone

- The "glutWireCone" and "glutSolidCone" functions draw -a wireframe and solid cone respectively. - -

Usage

- -

void glutWireCone ( GLdouble base, -GLdouble height, GLint slices, GLint stacks ) ;

- -

void glutSolidCone ( GLdouble base, -GLdouble height, GLint slices, GLint stacks ) ;

- -

base -The desired radius of the base of the -cone

- -

height -The desired height of the cone

- -

slices -The desired number of slices around -the base of the cone

- -

stacks -The desired number of segments between -the base and the tip of the cone (the number of points, including the tip, -is stacks + 1)

- -

Description

- -

The "glutWireCone" and "- glutSolidCone" functions render a right circular cone with a base -centered at the origin and in the X-Y plane and its tip on the positive Z-axis. -The wire cone is rendered with triangular elements.

- -

Changes From GLUT

- -

None that we know of.

- -

15.4 glutWireCube, glutSolidCube

- The "glutWireCube" and "glutSolidCube" functions draw -a wireframe and solid cube respectively. - -

Usage

- -

void glutWireCube ( GLdouble dSize -) ;

- -

void glutSolidCube ( GLdouble dSize -) ;

- -

dSize -The desired length of an edge of the -cube

- -

Description

- -

The "glutWireCube" and "- glutSolidCube" functions render a cube of the desired size, centered -at the origin. Its faces are normal to the coordinate directions.

- -

Changes From GLUT

- -

None that we know of.

- -

15.5 glutWireTetrahedron, glutSolidTetrahedron

- The "glutWireTetrahedron" and "glutSolidTetrahedron" -functions draw a wireframe and solid tetrahedron (four-sided Platonic solid) -respectively. -

Usage

- -

void glutWireTetrahedron ( void ) -;

- -

void glutSolidTetrahedron ( void -) ;

- -

Description

- -

The "glutWireTetrahedron" and -"glutSolidTetrahedron" functions render a tetrahedron whose corners -are each a distance of one from the origin. The length of each side -is 2/3 sqrt(6). One corner is on the positive X-axis and another is -in the X-Y plane with a positive Y-coordinate.

- -

Changes From GLUT

- -

None that we know of.

- -

15.6 glutWireOctahedron, glutSolidOctahedron

- The "glutWireOctahedron" and "glutSolidOctahedron" functions - draw a wireframe and solid octahedron (eight-sided Platonic solid) respectively. - -

Usage

- -

void glutWireOctahedron ( void ) -;

- -

void glutSolidOctahedron ( void ) -;

- -

Description

- -

The "glutWireOctahedron" and -"glutSolidOctahedron" functions render an octahedron whose corners -are each a distance of one from the origin. The length of each side -is sqrt(2). The corners are on the positive and negative coordinate -axes.

- -

Changes From GLUT

- -

None that we know of.

- -

15.7 glutWireDodecahedron, glutSolidDodecahedron

- The "glutWireDodecahedron" and "glutSolidDodecahedron -" functions draw a wireframe and solid dodecahedron (twelve-sided Platonic -solid) respectively. -

Usage

- -

void glutWireDodecahedron ( void -) ;

- -

void glutSolidDodecahedron ( void -) ;

- -

Description

- -

The "glutWireDodecahedron" and -"glutSolidDodecahedron" functions render a dodecahedron whose corners -are each a distance of sqrt(3) from the origin. The length of each -side is sqrt(5)-1. There are twenty corners; interestingly enough, -eight of them coincide with the corners of a cube with sizes of length 2. -

- -

Changes From GLUT

- -

None that we know of.

- -

15.8 glutWireIcosahedron, glutSolidIcosahedron

- The "glutWireIcosahedron" and "glutSolidIcosahedron" -functions draw a wireframe and solid icosahedron (twenty-sided Platonic solid) -respectively. -

Usage

- -

void glutWireIcosahedron ( void ) -;

- -

void glutSolidIcosahedron ( void -) ;

- -

Description

- -

The "glutWireIcosahedron" and -"glutSolidIcosahedron" functions render an icosahedron whose corners -are each a unit distance from the origin. The length of each side is -slightly greater than one. Two of the corners lie on the positive and -negative X-axes.

- -

Changes From GLUT

- -

None that we know of.

- -

15.7 glutWireRhombicDodecahedron, -glutSolidRhombicDodecahedron

- The "glutWireRhombicDodecahedron" and "glutSolidRhombicDodecahedron - " functions draw a wireframe and solid rhombic dodecahedron (twelve-sided - semi-regular solid) respectively. -

Usage

- -

void glutWireRhombicDodecahedron -( void ) ;

- -

void glutSolidRhombicDodecahedron -( void ) ;

- -

Description

- -

The "glutWireRhombicDodecahedron - " and "glutSolidRhombicDodecahedron" functions render a rhombic -dodecahedron whose corners are at most a distance of one from the origin. -The rhombic dodecahedron has faces which are identical rhombuses (rhombi?) -but which have some vertices at which three faces meet and some vertices at -which four faces meet. The length of each side is sqrt(3)/2. Vertices -at which four faces meet are found at (0, 0, +1) and ( +sqrt(2)/2, - +sqrt(2)/2, 0).

- -

Changes From GLUT

- -

GLUT does not include these functions. -

- -

15.10 glutWireTeapot, glutSolidTeapot

- The "glutWireTeapot" and "glutSolidTeapot" functions -draw a wireframe and solid teapot respectively. - -

Usage

- -

void glutWireTeapot ( GLdouble dSize -) ;

- -

void glutSolidTeapot ( GLdouble dSize -) ;

- -

dSize -The desired size of the teapot

- -

Description

- -

The "glutWireTeapot" and "- glutSolidTeapot" functions render a teapot of the desired size, centered -at the origin. This is the famous OpenGL teapot [add reference].

- -

Changes From GLUT

- -

None that we know of.

- -

16.0 - Game Mode Functions

- -

16.1 glutGameModeString

- -

16.2 glutEnterGameMode, glutLeaveGameMode

- -

16.3 glutGameModeGet

- -

17.0 - Video Resize Functions

- -

17.1 glutVideoResizeGet

- -

17.2 glutSetupVideoResizing, -glutStopVideoResizing

- -

17.3 glutVideoResize

- -

17.4 glutVideoPan

- -

18.0 - Color Map Functions

- -

18.1 glutSetColor, glutGetColor

- -

18.2 glutCopyColormap

- -

19.0 - Miscellaneous Functions

- -

19.1 glutIgnoreKeyRepeat, glutSetKeyRepeat

- -

19.2 glutForceJoystickFunc

- -

19.3 glutReportErrors

- -

20.0 - Usage Notes

- -

The following environment variables -are recognized by freeglut:

DISPLAY - specifies a display name.
-
GLUT_FPS - specifies a time interval -(in milliseconds) for reporting framerate messages to stderr. For example, -if FREEGLUT_FPS is set to 5000, every 5 seconds a message will be printed -to stderr showing the current frame rate. The frame rate is measured by counting -the number of times glutSwapBuffers() is called over the time interval.
GLUT_ICON - specifies the icon that -goes in the upper left-hand corner of the freeglut windows

21.0 - Implementation Notes

- -

22.0 -GLUT State

- -

23.0 -"freeglut.h" Header File

- - -

-Application programmers who are porting their GLUT programs to freeglut may continue -to include <GL/glut.h> in their programs. -Programs which use the freeglut-specific extensions to GLUT should include -<GL/freeglut.h>. One possible arrangement is as follows: -

- -

-#ifdef FREEGLUT
-#include <GL/freeglut_ext.h>
-#else
-#include <GL/glut.h>
-#endif
-

- -

-Compile-time freeglut version testing can be done as follows: -

- -

-#ifdef FREEGLUT_VERSION_2_0
-  code specific to freeglut 2.0 or later here
-#endif
-

- -

-In future releases, FREEGLUT_VERSION_2_1, FREEGLUT_VERSION_2_2, etc will -be defined. This scheme mimics OpenGL conventions. -

- -

-The freeglut version can be queried at runtime by calling -glutGet(GLUT_VERSION). -The result will be X*10000+Y*100+Z where X is the major version, Y is the -minor version and Z is the patch level. -

-This may be used as follows: -

- -

-if (glutGet(GLUT_VERSION) < 20001) {
-    printf("Sorry, you need freeglut version 2.0.1 or later to run this program.\n");
-    exit(1);
-}
-

- - - -

24.0 -References

- -

25.0 -Index

- -

-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-

- - - diff --git a/doc/index.html b/doc/index.html deleted file mode 100755 index d511a9b..0000000 --- a/doc/index.html +++ /dev/null @@ -1,101 +0,0 @@ - - -The freeglut project - - - - - - - - -

- -

- The free OpenGL utility toolkit - -

- - -

-
-Hosted at SourceForge -

- -

What -
-freeglut is a completely OpenSourced alternative to the OpenGL Utility -Toolkit (GLUT) library. GLUT was originally written by Mark Kilgard -to support the sample programs in the second edition OpenGL 'RedBook'. -Since then, GLUT has been used in a wide variety of practical applications -because it is simple, universally available and highly portable. -
-GLUT (and hence freeglut) allows the user to create and manage -windows containing OpenGL contexts on a wide range of platforms and -also read the mouse, keyboard and joystick functions. -
-freeglut is released under the X-Consortium license. -
- -
Why -
-The original GLUT library seems to have been abandoned with the most -recent version (3.7) dating back to August 1998. It's license does -not allow anyone to distribute modified the library code. This would -be OK, if not for the fact that GLUT is getting old and really needs -improvement. Also, GLUT's license is incompatible with some software -distributions (eg Xfree86). -
- -
Who -
-freeglut was originally written by Pawel W. Olszta with contributions -from Andreas Umbach and Steve Baker. Steve is now the official -owner/maintainer of freeglut. -
- -
When -
-Pawel started freeglut development on December 1st, 1999. -The project is now a virtually 100% replacement for the original -GLUT with only a few departures (such as the abandonment of SGI-specific -features such as the Dials&Buttons box and Dynamic Video Resolution). -
- -
Downloads -
-Check the -downloads page for the latest release. -
- -
Support -
-Send freeglut related questions to the appropriate freeglut mailing list: -
- freeglut-developer, -
- freeglut-announce and -
- freeglut-bugs. -
-You can subscribe to them via the - -SourceForge project interface. -
- -
Documentation -
-I believe this is enough for a short introduction. -If you are not tired of reading yet, check out the -freeglut project log. Here you will find the -yet-to-be-introduced new project structure -description. Finally, here you will find the latest -work progress report. Since freeglut is -a re-implementation of the original GLUT API, you can find API -documentation at http://www.opengl.org. -
-

- - diff --git a/doc/ogl_sm.png b/doc/ogl_sm.png deleted file mode 100755 index 80baefc644e6a8b419902534ccd89dbf3283b799..0000000000000000000000000000000000000000 GIT binary patch literal 0 HcmV?d00001 literal 1586 zcmW-ijav+P0LN!5Y{|9RTy-H!x|UVOb7(m)?X}qH)hIF4$q+ShGIx2IkTrSm44rO; zp7Bx{U8l{3%}YjcY@(ZpHczM33sy->swL6=@_jzP@8|pb{R6-Kk>LwRIDO{?LC^@z zqF@v_7@Topd(iBk{?$MZ>w?09AgCmBcz^s52(pt#hDNCe24fqr*=#^xZL?WzR;v|g zFcz!DVzJsRV1by;W{VY+*#z>n1d~Y+1hWN{U^E&{7Enf>=S>#gWab4kZ#01$ZvYq! zg4tjgv_Y@e8%?0}oSx%N94~MnEP!Qs6Uz&%o(GfF0dzWppwkUn#{d|{ATW9(!xdeAflpeW8raXdv0PKu;Rjwe~31cM|Ajwe`vfnZo%XTTW_CrF$iFr5L@ z=`jYtVK{*@dX(W%nnQ5{Ve|;iAvB9%xQgaf6sy7r6^f}4R7tT)N~a`sFvY@@4hDl{ zV1j`W97Zr0L17glCv|dykrT8WXXH37M=-exl`9dsQY9l889~c%042jH8G_3YOr}I+ zN|gsrdtj6YMtZ1F4_GC^X$eM2Fj9gN5;-i!C^1HgQ2-%EaIq2onl@>JW{6XMD^N)p}_!j&OSFIJ{Qx z_sXQmk9~8aU&<#or@S84^UnQL<;-#)rP8{srgDy`X~5-C^O8T{LzPV}F>^<^ZA^R~ znNgZD7I~2Vds9fLqic9(j@QS}2l>N+0rUOh{o0BSmE^s?ACjonKJ1M>cs=Cr;Nq5w zV?WhxE_c4TWA6FN9k<@Jz3uBO7YbMRub*JY9Bp03i;pD7D;~FAKwmc2D15U@DQ(2_ zt?%FWj|jc}k%mT1nfHo}oZjK^;!Eh-B#+W&r{ba6C0(g8lNVdPvOYeHt4Uau)4D0f zXSygO<-(VBFY6ZuWX^2%S~0(9+R3Z;9H(-p@AOc2sym1}^V%nmyK8sQE1}UN>x)Ji zC;Xh^=vU<@?MzvA+-I}t3`9l0i3>b-#C>#=L@{epktJ|!#L%3^F3-Y_<`^RS+w{9F z3j)G^IM*jhl%8AE!urL=B-CxWKQdy}AFCeO}TsF*l;{q8CC-P|Sj_Giz+&STgGmrg{ft@-iFoPjC1?F!L1E)I4x!#32l zHHkD;;=*6D%ZU5G=58wJxt^NV-cV(d4&V4eee}1a*Q@&C0|bq_7N^R({>*a7?E7tH z%!}2_tL8sE=b5*&{pghl|A_GeqeJ%G^|g;KqPxbVm&2kfamT~MvrcE}vbJCKecMo? zIOG_$G%euvg=BB1!>iUj@+>R#uE_syX#E(`rNxB~)m56RWe~Yn_o^Xr7TG%FLFv8l z7aeX_)6!;KcVQdXh}Ev+OJiKqZae#}Pa5AP+)B;Lb6)Frz|P(4MC6RUYq|ioYi2UP?>Z-uUiji`5oQANWtR??~;~mgdUK8`;h+9lqT+OCmn; zK7oO~+fHR}wjEASNO4_n{q#?ALC={nTR-zV%geVcoU8K>5?TKV2$;H*%~HFd-8=JR ze8Qv^$<=Ry6hvG=HLWe)mDl1K z`fu-{lex2rUC+snPm@ZvQh{#Wv)ZmrzBqSLyW037m3msqrsnjyI}Esfu`6rvcbrq_ RIURfgkVYLIT&!B9{U1x41GE4D diff --git a/doc/progress.html b/doc/progress.html deleted file mode 100755 index 8a84483..0000000 --- a/doc/progress.html +++ /dev/null @@ -1,137 +0,0 @@ - - - - - - - - - - The freeglut project - - - - The freeglut logo

-I love reports. They are so full of brightness and hope... -

- -

January the 16th, 2000 - -

It looks like both X11 and Win32 version have reached a comparable usability stage. -They are still missing many GLUT API 3 features, but the number is getting smaller and -smaller every day :) - -

input devices

Keyboard and mouse seems to work well. There is a big guess about the mouse buttons -count under X11 (always 3) -- I must remember to correct the menu activation code if -this shows to be invalid. - -

None of the bizarre input devices found in GLUT API is supported (and probably won't). - -

Steve Baker contributed the joystick code. It should work fine, as it did in PLIB, -but I haven't tested it out yet. It might not compile under FreeBSD, as I had to -convert it from C++ to C and had no possibility to compile it under FreeBSD (the Win32 -version had some typos, but I've already fixed them). - -

pull-down menus

Pull down menus seem to work. The menu is displayed using OpenGL, so it requires -the window's contents to be refreshed at an interactive rate, which sometimes does not -happen. That's why I'll consider adding optional window-system menu navigation later. -For now -- extensive testing is what I believe should be done with the menu system. - -

fonts

Bitmap fonts support is done. However it would be good to add two more API functions --- glutBitmapString() and glutStrokeString(), which should limit the quantity of state -changes when drawing longer strings. - -

Good that somebody finally told me where to get the stroke fonts data from... XFree86 -sources contain the ROMAN and MONO ROMAN stroke fonts data. For now stroke fonts are -rendered using the bitmap font GLUT_BITMAP_8_BY_13. - -

What has changed is the way the fonts are specified. I moved to the GLUT's strange -way of supplying (fake for freeglut) font data pointers instead of some nice enums. -Hope it helps in achieving the binary compatibility between freeglut and GLUT. - -

Added two new API calls: glutBitmapHeight() and glutStrokeHeight(), that return -a font's height. Hope this doesn't break the GLUT compatibility a lot. - -

mouse cursor

Need to have own cursor shapes, so that freeglut can pass them to the windowing -system, draw them using glBitmap() and/or texture mapping. The cursor shapes are very -probable to be found in XFree86 sources. - -

indexed color mode

This might work, however I have not tested it yet. glutGetColor/glutSetColor is not -implemented. Again, looks like a single Xlib call, but there might be some problems -with the colormap access. Need to switch into indexed color mode some day and check it -out (does Mesa 3.1 work with indexed color mode?) - -

planes

Overlays are not supported, but one of the GLUT conformance tests fails due to -glutLayerGet( GLUT_NORMAL_DAMAGED ) returning FALSE when the window has actually -been damaged. - -

Layers would be good for drawing the menus and mouse cursor, as they wouldn't force -the application redraw to update their state. - -

init display string

I am in middle of the fight with the init display string. It's parsing OK, now it -would be cool to make it impress some effects on the display... - -

game mode

Is the game mode string parsed correctly? - -

geometry

Andreas Umbach has contributed the cube and sphere code. The teapot rendering is -done using free SGI code. I have also added the cone rendering, however it is missing -normal vectors (just as Andrea's wireframed cube does). All of the glut*hedron() -functions await to be implemented. - -

obvious bugs

-the visibility/window status function is a conceptual mess. I had to peer into the GLUT -source code to see what actually happens inside. It helped me a bit, but still one of -the visibility tests fails. This is probably the reason for which a window covered by -enlightenment status bar is marked as hidden and does not get redrawn.
-GLX 1.3 spec states that glXChooseVisual() et consortes are deprecated. Should move to -glXFBConfig.
-need to investigate what happens when initial window position is set to (-1,-1). GLUT -specification says, that the window positioning should be left to the window system. -And I do not know how to force it do so...
-I was told it is wrong to have the redisplay forced in the main loop. Is that right?

not so obvious bugs

some of the tests freeze because they do not generate the glutPostRedisplay() call -every frame. Again, this is somehow handled by GLUT, but I can't see how. And why. - -
Looks like I've fixed it (or rather hacked it?) by forcing a redisplay every -frame, but this is no good and kills interactiveness of my console :D

- -Back to the main page - -

- diff --git a/doc/structure.html b/doc/structure.html deleted file mode 100755 index a460567..0000000 --- a/doc/structure.html +++ /dev/null @@ -1,80 +0,0 @@ - - - - - - - - - - The freeglut project - - - - The freeglut logo

-I've got a master plan (to take your API down)... -

- -

After that I get the freeglut Windows port working in an acceptable manner and thus -getting assured that the freeglut internal structure is valid, I will split the project -into three separate parts, listed below. - -

freeglut-common

The least common denominator between the two freeglut versions. This will probably -contain most of the internal structure of the toolkit, notably the windows and menu -hierarchy, and possibly some private helpers. - -

freeglut-1.3

The GLUT API 3 compatible library. This is what's can be found now in the alpha -release (apart from the bugs, naturally :D). - -

freeglut-2.0

Hopefully this will be what GLUT should have been from the beginning. I will give -a try to design a much more coherent API than GLUT's, aiming at fast games prototyping. -Suggestions are welcome.

- -

Here's a list of propositions I have received so far. Hopefully this some day -turns into an API spefication proposal, not just a bunch of meaningless phrases...
- -

glutBitmapHeight() and glutStrokeHeight() -- I have added them to the -freeglut-1.3 API, they are already implemented and should work fine,

glutBitmapString() and glutStrokeString(), to write (multiple-line maybe) -strings, starting from the current raster position, using some simple formatting -maybe (changing the color, font, etc.?)

texture mapped fonts -- this is easy and could be added to freeglut-1.3, but -would require adding the...

glutHint() function to tell freeglut to: use bitmapped/texture mapped fonts, -draw the menus and mouse cursor using OpenGL/window system, and stuff...

glutMainLoop() termination and glutMainLoopStep() function, which should -perform a single check of pending events, so that one can have his own main loop,

multiple joysticks support with multiple axes, buttons, hats, etc. It is a real -good thing to do, yet the API to do the magic might result in being really twisted,

glutModifierFunc() could be added, or glutGetModifierState() should be allowed -to be called anywhere from the client's code

- -

We might also think about:
- -

freeglut-2.0 modularity via plugins, so that only the features that one -needs get loaded (plugins are easily supported by GLib),

OpenGL state management functions,

audio support -- using OpenAL maybe?,

a real menu system, not only the popups

non-OpenGL but portable UI, something like Java Swing

window-closing confirmation box (this is related to the above)

- -

Following ideas are bad for freeglut:
- -

more accurate timers under Win32 -- this goes to the GLib development afaik

portable file I/O, portable threads, plugins/modules -- this is already -done in GLib

- -

Back to the main page - -

- -- 1.7.10.4

The Open-Source

OpenGL Utility Toolkit

(freeglut 2.0.0)

Application Programming Interface

Version 4.0

The freeglut Programming Consortium

July, 2003

1.0 - Contents

2.0 - Introduction

3.0 - Background

3.1 Design Philosophy

3.2 Conventions

3.3 Terminology

3.4 Differences from GLUT 3.7

3.4.1 glutMainLoop Behaviour

3.4.2 Action on Window Closure

3.4.3 Changes to Callbacks -

3.4.4 String Rendering -

3.4.5 Geometry Rendering -

3.4.5 Extension Function Queries

4.0 - Initialization Functions

4.1 glutInit

4.2 glutInitWindowPosition, glutInitWindowSize

4.3 glutInitDisplayMode

4.4 glutInitDisplayString

5.0 - Event Processing Functions

5.1 glutMainLoop

5.2 glutMainLoopEvent

5.3 glutLeaveMainLoop

6.0 - Window Functions

6.1 glutCreateWindow

6.2 glutCreateSubwindow

6.3 glutDestroyWindow

6.4 glutSetWindow, glutGetWindow

6.5 glutSetWindowTitle, glutSetIconTitle

6.6 glutReshapeWindow

6.7 glutPositionWindow

6.8 glutShowWindow, glutHideWindow, -glutIconifyWindow

6.9 glutPushWindow, glutPopWindow

6.10 glutFullScreen

7.0 - Display Functions

7.1 glutPostRedisplay

7.2 glutPostWindowRedisplay

7.3 glutSwapBuffers

8.0 - Mouse Cursor Functions

8.1 glutSetCursor

8.2 glutWarpPointer

9.0 - Overlay Functions

9.1 glutEstablishOverlay

9.2 glutRemoveOverlay

9.3 glutUseLayer

9.4 glutPostOverlayRedisplay

9.5 glutPostWindowOverlayRedisplay

9.6 glutShowOverlay, glutHideOverlay

10.0 - Menu Functions

10.1 glutCreateMenu

10.2 glutDestroyMenu

10.3 glutGetMenu, glutSetMenu

10.4 glutAddMenuEntry

10.5 glutAddSubMenu

10.6 glutChangeToMenuEntry

10.7 glutChangeToSubMenu

10.8 glutRemoveMenuItem

10.9 glutAttachMenu, glutDetachMenu

11.0 - Global Callback Registration Functions

11.1 glutTimerFunc

11.2 glutIdleFunc

12.0 - Window-Specific Callback Registration Functions

12.1 glutDisplayFunc

12.2 glutOverlayDisplayFunc

12.3 glutReshapeFunc

12.4 glutCloseFunc

12.5 glutKeyboardFunc

12.6 glutSpecialFunc

12.7 glutKeyboardUpFunc

12.8 glutSpecialUpFunc

12.9 glutMouseFunc

12.10 glutMotionFunc, glutPassiveMotionFunc

12.11 glutVisibilityFunc

12.12 glutEntryFunc

3.4.3 Changes to Callbacks
-

3.4.4 String Rendering
-

3.4.5 Geometry Rendering
-