//// "$Id: glut.H 4288 2005-04-16 00:13:17Z mike $"//// GLUT emulation header file for the Fast Light Tool Kit (FLTK).//// Copyright 1998-2005 by Bill Spitzak and others.//// This library is free software; you can redistribute it and/or// modify it under the terms of the GNU Library General Public// License as published by the Free Software Foundation; either// version 2 of the License, or (at your option) any later version.//// This library is distributed in the hope that it will be useful,// but WITHOUT ANY WARRANTY; without even the implied warranty of// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU// Library General Public License for more details.//// You should have received a copy of the GNU Library General Public// License along with this library; if not, write to the Free Software// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307// USA.//// Please report all bugs and problems on the following page:////     http://www.fltk.org/str.php//// Emulation of GLUT using fltk.// GLUT is Copyright (c) Mark J. Kilgard, 1994, 1995, 1996:// "This program is freely distributable without licensing fees  and is// provided without guarantee or warrantee expressed or  implied. This// program is -not- in the public domain."// Although I have copied the GLUT API, none of my code is based on// any GLUT implementation details and is therefore covered by the LGPL.// FLTK does not include the GLUT drawing functions (such as// glutWireTeapot()) or the stroke fonts but the declarations for the// drawing functions are included here because otherwise there is no// way to get them along with this.  To use them you will have to// link in the original GLUT library, put -lglut *after* -lfltk.// Commented out lines indicate parts of GLUT that are not emulated.#ifndef __glut_h__#  define __glut_h__#  include "gl.h"//#  include <GL/glu.h>////////////////////////////////////////////////////////////////// GLUT is emulated using this window class and these static variables// (plus several more static variables hidden in glut.C):#  include "Fl.H"#  include "Fl_Gl_Window.H"class FL_EXPORT Fl_Glut_Window : public Fl_Gl_Window {  void _init();  int mouse_down;protected:  void draw();  void draw_overlay();  int handle(int);public: // so the inline functions work  int number;  int menu[3];  void make_current();  void (*display)();  void (*overlaydisplay)();  void (*reshape)(int w, int h);  void (*keyboard)(uchar, int x, int y);  void (*mouse)(int b, int state, int x, int y);  void (*motion)(int x, int y);  void (*passivemotion)(int x, int y);  void (*entry)(int);  void (*visibility)(int);  void (*special)(int, int x, int y);  Fl_Glut_Window(int w, int h, const char *);  Fl_Glut_Window(int x, int y, int w, int h, const char *);  ~Fl_Glut_Window();};extern FL_EXPORT Fl_Glut_Window *glut_window;	// the current windowextern FL_EXPORT int glut_menu;			// the current menu// function pointers that are not per-window:extern FL_EXPORT void (*glut_idle_function)();extern FL_EXPORT void (*glut_menustate_function)(int);extern FL_EXPORT void (*glut_menustatus_function)(int,int,int);//////////////////////////////////////////////////////////////////#  define GLUT_API_VERSION This does not match any version of GLUT exactly...FL_EXPORT void glutInit(int *argcp, char **argv); // creates first windowFL_EXPORT void glutInitDisplayMode(unsigned int mode);// the FL_ symbols have the same value as the GLUT ones:#  define GLUT_RGB	FL_RGB#  define GLUT_RGBA	FL_RGB#  define GLUT_INDEX	FL_INDEX#  define GLUT_SINGLE	FL_SINGLE#  define GLUT_DOUBLE	FL_DOUBLE#  define GLUT_ACCUM	FL_ACCUM#  define GLUT_ALPHA	FL_ALPHA#  define GLUT_DEPTH	FL_DEPTH#  define GLUT_STENCIL	FL_STENCIL#  define GLUT_MULTISAMPLE FL_MULTISAMPLE#  define GLUT_STEREO	FL_STEREO// #  define GLUT_LUMINANCE		512FL_EXPORT void glutInitWindowPosition(int x, int y);FL_EXPORT void glutInitWindowSize(int w, int h);FL_EXPORT void glutMainLoop();FL_EXPORT int glutCreateWindow(char *title);FL_EXPORT int glutCreateSubWindow(int win, int x, int y, int width, int height);FL_EXPORT void glutDestroyWindow(int win);inline void glutPostRedisplay() {glut_window->redraw();}FL_EXPORT void glutSwapBuffers();inline int glutGetWindow() {return glut_window->number;}FL_EXPORT void glutSetWindow(int win);inline void glutSetWindowTitle(char *t) {glut_window->label(t);}inline void glutSetIconTitle(char *t) {glut_window->iconlabel(t);}inline void glutPositionWindow(int x, int y) {glut_window->position(x,y);}inline void glutReshapeWindow(int w, int h) {glut_window->size(w,h);}inline void glutPopWindow() {glut_window->show();}//inline void glutPushWindow();inline void glutIconifyWindow() {glut_window->iconize();}inline void glutShowWindow() {glut_window->show();}inline void glutHideWindow() {glut_window->hide();}inline void glutFullScreen() {glut_window->fullscreen();}inline void glutSetCursor(Fl_Cursor cursor) {glut_window->cursor(cursor);}// notice that the numeric values are different than glut:#  define GLUT_CURSOR_RIGHT_ARROW		((Fl_Cursor)2)#  define GLUT_CURSOR_LEFT_ARROW		((Fl_Cursor)67)#  define GLUT_CURSOR_INFO			FL_CURSOR_HAND#  define GLUT_CURSOR_DESTROY			((Fl_Cursor)45)#  define GLUT_CURSOR_HELP			FL_CURSOR_HELP#  define GLUT_CURSOR_CYCLE			((Fl_Cursor)26)#  define GLUT_CURSOR_SPRAY			((Fl_Cursor)63)#  define GLUT_CURSOR_WAIT			FL_CURSOR_WAIT#  define GLUT_CURSOR_TEXT			FL_CURSOR_INSERT#  define GLUT_CURSOR_CROSSHAIR			FL_CURSOR_CROSS#  define GLUT_CURSOR_UP_DOWN			FL_CURSOR_NS#  define GLUT_CURSOR_LEFT_RIGHT		FL_CURSOR_WE#  define GLUT_CURSOR_TOP_SIDE			FL_CURSOR_N#  define GLUT_CURSOR_BOTTOM_SIDE		FL_CURSOR_S#  define GLUT_CURSOR_LEFT_SIDE			FL_CURSOR_W#  define GLUT_CURSOR_RIGHT_SIDE		FL_CURSOR_E#  define GLUT_CURSOR_TOP_LEFT_CORNER		FL_CURSOR_NW#  define GLUT_CURSOR_TOP_RIGHT_CORNER		FL_CURSOR_NE#  define GLUT_CURSOR_BOTTOM_RIGHT_CORNER	FL_CURSOR_SE#  define GLUT_CURSOR_BOTTOM_LEFT_CORNER	FL_CURSOR_SW#  define GLUT_CURSOR_INHERIT			FL_CURSOR_DEFAULT#  define GLUT_CURSOR_NONE			FL_CURSOR_NONE#  define GLUT_CURSOR_FULL_CROSSHAIR		FL_CURSOR_CROSS//inline void glutWarpPointer(int x, int y);inline void glutEstablishOverlay() {glut_window->make_overlay_current();}inline void glutRemoveOverlay() {glut_window->hide_overlay();}inline void glutUseLayer(GLenum layer) {  layer ? glut_window->make_overlay_current() : glut_window->make_current();}enum {GLUT_NORMAL, GLUT_OVERLAY};inline void glutPostOverlayRedisplay() {glut_window->redraw_overlay();}inline void glutShowOverlay() {glut_window->redraw_overlay();}inline void glutHideOverlay() {glut_window->hide_overlay();}FL_EXPORT int glutCreateMenu(void (*)(int));FL_EXPORT void glutDestroyMenu(int menu);inline int glutGetMenu() {return glut_menu;}inline void glutSetMenu(int m) {glut_menu = m;}FL_EXPORT void glutAddMenuEntry(char *label, int value);FL_EXPORT void glutAddSubMenu(char *label, int submenu);FL_EXPORT void glutChangeToMenuEntry(int item, char *label, int value);FL_EXPORT void glutChangeToSubMenu(int item, char *label, int submenu);FL_EXPORT void glutRemoveMenuItem(int item);inline void glutAttachMenu(int b) {glut_window->menu[b] = glut_menu;}inline void glutDetachMenu(int b) {glut_window->menu[b] = 0;}inline void glutDisplayFunc(void (*f)()) {glut_window->display = f;}inline void glutReshapeFunc(void (*f)(int w, int h)) {glut_window->reshape=f;}inline void glutKeyboardFunc(void (*f)(uchar key, int x, int y)) {  glut_window->keyboard = f;}inline void glutMouseFunc(void (*f)(int b, int state, int x, int y)) {  glut_window->mouse = f;}#  define GLUT_LEFT_BUTTON		0#  define GLUT_MIDDLE_BUTTON		1#  define GLUT_RIGHT_BUTTON		2#  define GLUT_DOWN			0#  define GLUT_UP			1inline void glutMotionFunc(void (*f)(int x, int y)) {glut_window->motion= f;}inline void glutPassiveMotionFunc(void (*f)(int x, int y)) {  glut_window->passivemotion= f;}inline void glutEntryFunc(void (*f)(int s)) {glut_window->entry = f;}enum {GLUT_LEFT, GLUT_ENTERED};