From 497afccb07164373e0de6639e754d7d691f1926f Mon Sep 17 00:00:00 2001 From: Fabien Costantini Date: Tue, 14 Oct 2008 22:12:25 +0000 Subject: Doxygen pdf man: First version added in documentation/fltk.pdf, old doc removed, images, dox files moved to a new src directory. git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@6431 ea41ed52-d2ee-0310-a9c1-e6b18d33e121 --- documentation/glut.html | 196 ------------------------------------------------ 1 file changed, 196 deletions(-) delete mode 100644 documentation/glut.html (limited to 'documentation/glut.html') diff --git a/documentation/glut.html b/documentation/glut.html deleted file mode 100644 index b1addffac..000000000 --- a/documentation/glut.html +++ /dev/null @@ -1,196 +0,0 @@ - - - D - GLUT Compatibility - - -

D - GLUT Compatibility

-

This appendix describes the GLUT compatibility header file supplied with FLTK. FLTK's GLUT compatibility is based on the original GLUT 3.7 and the follow-on FreeGLUT 2.4.0 libraries.

-

Using the GLUT Compatibility Header File

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You should be able to compile existing GLUT source code by including <FL/glut.H> instead of <GL/glut.h>. This can be done by editing the source, by changing the -I switches to the compiler, or by providing a symbolic link from GL/glut.h to FL/glut.H.

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All files calling GLUT procedures must be compiled with C++. You may have to alter them slightly to get them to compile without warnings, and you may have to rename them to get make to use the C++ compiler.

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You must link with the FLTK library. Most of FL/glut.H is inline functions. You should take a look at it (and maybe at test/glpuzzle.cxx in the FLTK source) if you are having trouble porting your GLUT program.

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This has been tested with most of the demo programs that come with the GLUT and FreeGLUT distributions.

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Known Problems

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The following functions and/or arguments to functions are missing, and -you will have to replace them or comment them out for your code to -compile: -

- Most of the symbols/enumerations have different values than GLUT uses. - This will break code that relies on the actual values. The only -symbols guaranteed to have the same values are true/false pairs like -GLUT_DOWN and GLUT_UP, mouse buttons -GLUT_LEFT_BUTTON, GLUT_MIDDLE_BUTTON, GLUT_RIGHT_BUTTON, and -GLUT_KEY_F1 thru F12. -

The strings passed as menu labels are not copied.

-

glutPostRedisplay() does not work if called from inside a -display function. You must use glutIdleFunc() if you want -your display to update continuously.

-

glutSwapBuffers() does not work from inside a display -function. This is on purpose, because FLTK swaps the buffers for you.

-

glutUseLayer() does not work well, and should only be used -to initialize transformations inside a resize callback. You should -redraw overlays by using glutOverlayDisplayFunc().

-

Overlays are cleared before the overlay display function is called. -glutLayerGet(GLUT_OVERLAY_DAMAGED) always returns true for -compatibility with some GLUT overlay programs. You must rewrite your -code so that gl_color() is used to choose colors in an -overlay, or you will get random overlay colors.

-

glutSetCursor(GLUT_CURSOR_FULL_CROSSHAIR) just results in a -small crosshair.

-

The fonts used by glutBitmapCharacter() and glutBitmapWidth() - may be different.

-

glutInit(argc,argv) will consume different switches than -GLUT does. It accepts the switches recognized by -Fl::args(), and will accept any abbreviation of these -switches (such as "-di" for "-display").

-

Mixing GLUT and FLTK Code

- You can make your GLUT window a child of a Fl_Window with the -following scheme. The biggest trick is that GLUT insists on show() -'ing the window at the point it is created, which means the -Fl_Window parent window must already be shown. - -
-

class Fl_Glut_Window

-
-

Class Hierarchy

- -

Include Files

- -

Description

- Each GLUT window is an instance of this class. You may find it useful -to manipulate instances directly rather than use GLUT window id's. - These may be created without opening the display, and thus can fit -better into FLTK's method of creating windows. -

The current GLUT window is available in the global variable -glut_window.

-

new Fl_Glut_Window(...) is the same as -glutCreateWindow() except it does not show() the window -or make the window current.

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window->make_current() is the same as -glutSetWindow(number). If the window has not had show() - called on it yet, some functions that assumme an OpenGL context will -not work. If you do show() the window, call make_current() - again to set the context.

-

~Fl_Glut_Window() is the same as glutDestroyWindow() -.

-

Members

-The Fl_Glut_Window class contains several public members that can -be altered directly: -
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
memberdescription
displayA pointer to the function to call to draw the normal planes.
entryA pointer to the function to call when the mouse moves into - or out of the window.
keyboardA pointer to the function to call when a regular key is pressed.
menu[3]The menu to post when one of the mouse buttons is pressed.
mouseA pointer to the function to call when a button is pressed or - released.
motionA pointer to the function to call when the mouse is moved with - a button down.
overlaydisplayA pointer to the function to call to draw the overlay planes.
passivemotionA pointer to the function to call when the mouse is moved with - no buttons down.
reshapeA pointer to the function to call when the window is resized.
specialA pointer to the function to call when a special key is pressed.
visibilityA pointer to the function to call when the window is iconified - or restored (made visible.)
- -

Methods

- -

-Fl_Glut_Window::Fl_Glut_Window(int x, int y, int w, int h, const char -*title = 0) -
Fl_Glut_Window::Fl_Glut_Window(int w, int h, const char *title = 0) -

- The first constructor takes 4 int arguments to create the window with -a preset position and size. The second constructor with 2 arguments -will create the window with a preset size, but the window manager will -choose the position according to it's own whims. -

virtual -Fl_Glut_Window::~Fl_Glut_Window()

- Destroys the GLUT window. -

void Fl_Glut_Window::make_current()

-Switches all drawing functions to the GLUT window. - - - -- cgit v1.2.3