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// glut.h
// 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 <FL/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_Glut_Window : public Fl_Gl_Window {
void draw();
void draw_overlay();
int handle(int);
void _init();
int mouse_down;
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_Glut_Window *glut_window; // the current window
extern int glut_menu; // the current menu
// function pointers that are not per-window:
extern void (*glut_idle_function)();
extern void (*glut_menustate_function)(int);
extern void (*glut_menustatus_function)(int,int,int);
////////////////////////////////////////////////////////////////
//#define GLUT_API_VERSION This does not match any version of Glut exactly...
void glutInit(int *argcp, char **argv); // creates first window
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 256
// #define GLUT_LUMINANCE 512
void glutInitWindowPosition(int x, int y);
void glutInitWindowSize(int w, int h);
void glutMainLoop();
int glutCreateWindow(char *title);
int glutCreateSubWindow(int win, int x, int y, int width, int height);
void glutDestroyWindow(int win);
inline void glutPostRedisplay() {glut_window->redraw();}
void glutSwapBuffers();
inline int glutGetWindow() {return glut_window->number;}
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();}
int glutCreateMenu(void (*)(int));
void glutDestroyMenu(int menu);
inline int glutGetMenu() {return glut_menu;}
inline void glutSetMenu(int m) {glut_menu = m;}
void glutAddMenuEntry(char *label, int value);
void glutAddSubMenu(char *label, int submenu);
void glutChangeToMenuEntry(int item, char *label, int value);
void glutChangeToSubMenu(int item, char *label, int submenu);
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 1
inline 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};
inline void glutVisibilityFunc(void (*f)(int s)) {glut_window->visibility=f;}
enum {GLUT_NOT_VISIBLE, GLUT_VISIBLE};
inline void glutIdleFunc(void (*f)()) {Fl::set_idle(f);}
// Warning: this cast may not work on all machines:
inline void glutTimerFunc(unsigned int msec, void (*f)(int), int value) {
Fl::add_timeout(msec*.001, (void (*)(void *))f, (void *)value);
}
inline void glutMenuStateFunc(void (*f)(int state)) {
glut_menustate_function = f;}
inline void glutMenuStatusFunc(void (*f)(int status, int x, int y)) {
glut_menustatus_function = f;}
enum {GLUT_MENU_NOT_IN_USE, GLUT_MENU_IN_USE};
inline void glutSpecialFunc(void (*f)(int key, int x, int y)) {
glut_window->special = f;}
#define GLUT_KEY_F1 1
#define GLUT_KEY_F2 2
#define GLUT_KEY_F3 3
#define GLUT_KEY_F4 4
#define GLUT_KEY_F5 5
#define GLUT_KEY_F6 6
#define GLUT_KEY_F7 7
#define GLUT_KEY_F8 8
#define GLUT_KEY_F9 9
#define GLUT_KEY_F10 10
#define GLUT_KEY_F11 11
#define GLUT_KEY_F12 12
// WARNING: Different values than Glut uses:
#define GLUT_KEY_LEFT FL_Left
#define GLUT_KEY_UP FL_Up
#define GLUT_KEY_RIGHT FL_Right
#define GLUT_KEY_DOWN FL_Down
#define GLUT_KEY_PAGE_UP FL_Page_Up
#define GLUT_KEY_PAGE_DOWN FL_Page_Down
#define GLUT_KEY_HOME FL_Home
#define GLUT_KEY_END FL_End
#define GLUT_KEY_INSERT FL_Insert
//inline void glutSpaceballMotionFunc(void (*)(int x, int y, int z));
//inline void glutSpaceballRotateFunc(void (*)(int x, int y, int z));
//inline void glutSpaceballButtonFunc(void (*)(int button, int state));
//inline void glutButtonBoxFunc(void (*)(int button, int state));
//inline void glutDialsFunc(void (*)(int dial, int value));
//inline void glutTabletMotionFunc(void (*)(int x, int y));
//inline void glutTabletButtonFunc(void (*)(int button, int state, int x, int y));
inline void glutOverlayDisplayFunc(void (*f)()) {
glut_window->overlaydisplay = f;}
//inline void glutWindowStatusFunc(void (*)(int state));
//enum {GLUT_HIDDEN, GLUT_FULLY_RETAINED, GLUT_PARTIALLY_RETAINED,
// GLUT_FULLY_COVERED};
//inline void glutSetColor(int, GLfloat red, GLfloat green, GLfloat blue);
//inline GLfloat glutGetColor(int ndx, int component);
//#define GLUT_RED 0
//#define GLUT_GREEN 1
//#define GLUT_BLUE 2
//inline void glutCopyColormap(int win);
// Warning: values are changed from Glut!
// Also relies on the GL_ symbols having values greater than 100
int glutGet(GLenum type);
enum {
GLUT_RETURN_ZERO = 0,
GLUT_WINDOW_X,
GLUT_WINDOW_Y,
GLUT_WINDOW_WIDTH,
GLUT_WINDOW_HEIGHT,
GLUT_WINDOW_PARENT,
//GLUT_WINDOW_NUM_CHILDREN,
//GLUT_WINDOW_CURSOR,
GLUT_SCREEN_WIDTH,
GLUT_SCREEN_HEIGHT,
//GLUT_SCREEN_WIDTH_MM,
//GLUT_SCREEN_HEIGHT_MM,
GLUT_MENU_NUM_ITEMS,
GLUT_DISPLAY_MODE_POSSIBLE,
GLUT_INIT_WINDOW_X,
GLUT_INIT_WINDOW_Y,
GLUT_INIT_WINDOW_WIDTH,
GLUT_INIT_WINDOW_HEIGHT,
GLUT_INIT_DISPLAY_MODE,
//GLUT_ELAPSED_TIME,
GLUT_WINDOW_BUFFER_SIZE
};
#define GLUT_WINDOW_STENCIL_SIZE GL_STENCIL_BITS
#define GLUT_WINDOW_DEPTH_SIZE GL_DEPTH_BITS
#define GLUT_WINDOW_RED_SIZE GL_RED_BITS
#define GLUT_WINDOW_GREEN_SIZE GL_GREEN_BITS
#define GLUT_WINDOW_BLUE_SIZE GL_BLUE_BITS
#define GLUT_WINDOW_ALPHA_SIZE GL_ALPHA_BITS
#define GLUT_WINDOW_ACCUM_RED_SIZE GL_ACCUM_RED_BITS
#define GLUT_WINDOW_ACCUM_GREEN_SIZE GL_ACCUM_GREEN_BITS
#define GLUT_WINDOW_ACCUM_BLUE_SIZE GL_ACCUM_BLUE_BITS
#define GLUT_WINDOW_ACCUM_ALPHA_SIZE GL_ACCUM_ALPHA_BITS
#define GLUT_WINDOW_DOUBLEBUFFER GL_DOUBLEBUFFER
#define GLUT_WINDOW_RGBA GL_RGBA
#define GLUT_WINDOW_COLORMAP_SIZE GL_INDEX_BITS
#ifdef GL_SAMPLES_SGIS
#define GLUT_WINDOW_NUM_SAMPLES GL_SAMPLES_SGIS
#else
#define GLUT_WINDOW_NUM_SAMPLES GLUT_RETURN_ZERO
#endif
#define GLUT_WINDOW_STEREO GL_STEREO
//int glutDeviceGet(GLenum type);
//#define GLUT_HAS_KEYBOARD 600
//#define GLUT_HAS_MOUSE 601
//#define GLUT_HAS_SPACEBALL 602
//#define GLUT_HAS_DIAL_AND_BUTTON_BOX 603
//#define GLUT_HAS_TABLET 604
//#define GLUT_NUM_MOUSE_BUTTONS 605
//#define GLUT_NUM_SPACEBALL_BUTTONS 606
//#define GLUT_NUM_BUTTON_BOX_BUTTONS 607
//#define GLUT_NUM_DIALS 608
//#define GLUT_NUM_TABLET_BUTTONS 609
inline int glutGetModifiers() {return Fl::event_state();}
// WARNING: these values are different than Glut uses:
#define GLUT_ACTIVE_SHIFT FL_SHIFT
#define GLUT_ACTIVE_CTRL FL_CTRL
#define GLUT_ACTIVE_ALT FL_ALT
int glutLayerGet(GLenum);
#define GLUT_OVERLAY_POSSIBLE 800
//#define GLUT_LAYER_IN_USE 801
//#define GLUT_HAS_OVERLAY 802
#define GLUT_TRANSPARENT_INDEX 803
#define GLUT_NORMAL_DAMAGED 804
#define GLUT_OVERLAY_DAMAGED 805
//inline int glutVideoResizeGet(GLenum param);
//#define GLUT_VIDEO_RESIZE_POSSIBLE 900
//#define GLUT_VIDEO_RESIZE_IN_USE 901
//#define GLUT_VIDEO_RESIZE_X_DELTA 902
//#define GLUT_VIDEO_RESIZE_Y_DELTA 903
//#define GLUT_VIDEO_RESIZE_WIDTH_DELTA 904
//#define GLUT_VIDEO_RESIZE_HEIGHT_DELTA 905
//#define GLUT_VIDEO_RESIZE_X 906
//#define GLUT_VIDEO_RESIZE_Y 907
//#define GLUT_VIDEO_RESIZE_WIDTH 908
//#define GLUT_VIDEO_RESIZE_HEIGHT 909
//inline void glutSetupVideoResizing();
//inline void glutStopVideoResizing();
//inline void glutVideoResize(int x, int y, int width, int height);
//inline void glutVideoPan(int x, int y, int width, int height);
////////////////////////////////////////////////////////////////
// Emulated Glut drawing functions:
// Font argument must be a void* for compatability, so...
extern struct Glut_Bitmap_Font {uchar font; int size;}
glutBitmap9By15, glutBitmap8By13, glutBitmapTimesRoman10,
glutBitmapTimesRoman24, glutBitmapHelvetica10, glutBitmapHelvetica12,
glutBitmapHelvetica18;
#define GLUT_BITMAP_9_BY_15 (&glutBitmap9By15)
#define GLUT_BITMAP_8_BY_13 (&glutBitmap8By13)
#define GLUT_BITMAP_TIMES_ROMAN_10 (&glutBitmapTimesRoman10)
#define GLUT_BITMAP_TIMES_ROMAN_24 (&glutBitmapTimesRoman24)
#define GLUT_BITMAP_HELVETICA_10 (&glutBitmapHelvetica10)
#define GLUT_BITMAP_HELVETICA_12 (&glutBitmapHelvetica12)
#define GLUT_BITMAP_HELVETICA_18 (&glutBitmapHelvetica18)
void glutBitmapCharacter(void *font, int character);
int glutBitmapWidth(void *font, int character);
////////////////////////////////////////////////////////////////
// Glut drawing functions. These are NOT emulated but you can
// link in the glut library to get them. This assummes the object
// files in Glut remain as they currently are so that there are
// not symbol conflicts with the above.
extern "C" {
extern int glutExtensionSupported(char *name);
/* Stroke font opaque addresses (use constants instead in source code). */
extern void *glutStrokeRoman;
extern void *glutStrokeMonoRoman;
/* Stroke font constants (use these in GLUT program). */
#define GLUT_STROKE_ROMAN (&glutStrokeRoman)
#define GLUT_STROKE_MONO_ROMAN (&glutStrokeMonoRoman)
/* GLUT font sub-API */
extern void glutStrokeCharacter(void *font, int character);
extern int glutStrokeWidth(void *font, int character);
/* GLUT pre-built models sub-API */
extern void glutWireSphere(GLdouble radius, GLint slices, GLint stacks);
extern void glutSolidSphere(GLdouble radius, GLint slices, GLint stacks);
extern void glutWireCone(GLdouble base, GLdouble height, GLint slices, GLint stacks);
extern void glutSolidCone(GLdouble base, GLdouble height, GLint slices, GLint stacks);
extern void glutWireCube(GLdouble size);
extern void glutSolidCube(GLdouble size);
extern void glutWireTorus(GLdouble innerRadius, GLdouble outerRadius, GLint sides, GLint rings);
extern void glutSolidTorus(GLdouble innerRadius, GLdouble outerRadius, GLint sides, GLint rings);
extern void glutWireDodecahedron();
extern void glutSolidDodecahedron();
extern void glutWireTeapot(GLdouble size);
extern void glutSolidTeapot(GLdouble size);
extern void glutWireOctahedron();
extern void glutSolidOctahedron();
extern void glutWireTetrahedron();
extern void glutSolidTetrahedron();
extern void glutWireIcosahedron();
extern void glutSolidIcosahedron();
}
#endif /* __glut_h__ */
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