444 lines
14 KiB
C++
444 lines
14 KiB
C++
// glut.h
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// Emulation of Glut using fltk.
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// GLUT is Copyright (c) Mark J. Kilgard, 1994, 1995, 1996:
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// "This program is freely distributable without licensing fees and is
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// provided without guarantee or warrantee expressed or implied. This
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// program is -not- in the public domain."
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// Although I have copied the GLUT API, none of my code is based on
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// any Glut implementation details and is therefore covered by the LGPL.
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// Fltk does not include the Glut drawing functions (such as
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// glutWireTeapot()) or the stroke fonts but the declarations for the
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// drawing functions are included here because otherwise there is no
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// way to get them along with this. To use them you will have to
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// link in the original Glut library, put -lglut *after* -lfltk.
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// Commented out lines indicate parts of Glut that are not emulated.
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#ifndef __glut_h__
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#define __glut_h__
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#include <FL/gl.h>
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#include <GL/glu.h>
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////////////////////////////////////////////////////////////////
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// Glut is emulated using this window class and these static variables
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// (plus several more static variables hidden in glut.C):
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#include "Fl.H"
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#include "Fl_Gl_Window.H"
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class Fl_Glut_Window : public Fl_Gl_Window {
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void draw();
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void draw_overlay();
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int handle(int);
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void _init();
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int mouse_down;
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public: // so the inline functions work
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int number;
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int menu[3];
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void make_current();
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void (*display)();
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void (*overlaydisplay)();
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void (*reshape)(int w, int h);
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void (*keyboard)(uchar, int x, int y);
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void (*mouse)(int b, int state, int x, int y);
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void (*motion)(int x, int y);
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void (*passivemotion)(int x, int y);
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void (*entry)(int);
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void (*visibility)(int);
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void (*special)(int, int x, int y);
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Fl_Glut_Window(int w, int h, const char *);
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Fl_Glut_Window(int x, int y, int w, int h, const char *);
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~Fl_Glut_Window();
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};
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extern Fl_Glut_Window *glut_window; // the current window
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extern int glut_menu; // the current menu
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// function pointers that are not per-window:
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extern void (*glut_idle_function)();
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extern void (*glut_menustate_function)(int);
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extern void (*glut_menustatus_function)(int,int,int);
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////////////////////////////////////////////////////////////////
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//#define GLUT_API_VERSION This does not match any version of Glut exactly...
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void glutInit(int *argcp, char **argv); // creates first window
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void glutInitDisplayMode(unsigned int mode);
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// the FL_ symbols have the same value as the GLUT ones:
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#define GLUT_RGB FL_RGB
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#define GLUT_RGBA FL_RGB
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#define GLUT_INDEX FL_INDEX
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#define GLUT_SINGLE FL_SINGLE
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#define GLUT_DOUBLE FL_DOUBLE
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#define GLUT_ACCUM FL_ACCUM
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#define GLUT_ALPHA FL_ALPHA
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#define GLUT_DEPTH FL_DEPTH
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#define GLUT_STENCIL FL_STENCIL
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#define GLUT_MULTISAMPLE FL_MULTISAMPLE
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// #define GLUT_STEREO 256
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// #define GLUT_LUMINANCE 512
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void glutInitWindowPosition(int x, int y);
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void glutInitWindowSize(int w, int h);
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void glutMainLoop();
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int glutCreateWindow(char *title);
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int glutCreateSubWindow(int win, int x, int y, int width, int height);
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void glutDestroyWindow(int win);
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inline void glutPostRedisplay() {glut_window->redraw();}
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void glutSwapBuffers();
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inline int glutGetWindow() {return glut_window->number;}
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void glutSetWindow(int win);
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inline void glutSetWindowTitle(char *t) {glut_window->label(t);}
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inline void glutSetIconTitle(char *t) {glut_window->iconlabel(t);}
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inline void glutPositionWindow(int x, int y) {glut_window->position(x,y);}
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inline void glutReshapeWindow(int w, int h) {glut_window->size(w,h);}
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inline void glutPopWindow() {glut_window->show();}
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//inline void glutPushWindow();
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inline void glutIconifyWindow() {glut_window->iconize();}
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inline void glutShowWindow() {glut_window->show();}
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inline void glutHideWindow() {glut_window->hide();}
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inline void glutFullScreen() {glut_window->fullscreen();}
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inline void glutSetCursor(Fl_Cursor cursor) {glut_window->cursor(cursor);}
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// notice that the numeric values are different than glut:
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#define GLUT_CURSOR_RIGHT_ARROW ((Fl_Cursor)2)
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#define GLUT_CURSOR_LEFT_ARROW ((Fl_Cursor)67)
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#define GLUT_CURSOR_INFO FL_CURSOR_HAND
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#define GLUT_CURSOR_DESTROY ((Fl_Cursor)45)
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#define GLUT_CURSOR_HELP FL_CURSOR_HELP
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#define GLUT_CURSOR_CYCLE ((Fl_Cursor)26)
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#define GLUT_CURSOR_SPRAY ((Fl_Cursor)63)
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#define GLUT_CURSOR_WAIT FL_CURSOR_WAIT
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#define GLUT_CURSOR_TEXT FL_CURSOR_INSERT
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#define GLUT_CURSOR_CROSSHAIR FL_CURSOR_CROSS
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#define GLUT_CURSOR_UP_DOWN FL_CURSOR_NS
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#define GLUT_CURSOR_LEFT_RIGHT FL_CURSOR_WE
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#define GLUT_CURSOR_TOP_SIDE FL_CURSOR_N
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#define GLUT_CURSOR_BOTTOM_SIDE FL_CURSOR_S
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#define GLUT_CURSOR_LEFT_SIDE FL_CURSOR_W
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#define GLUT_CURSOR_RIGHT_SIDE FL_CURSOR_E
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#define GLUT_CURSOR_TOP_LEFT_CORNER FL_CURSOR_NW
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#define GLUT_CURSOR_TOP_RIGHT_CORNER FL_CURSOR_NE
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#define GLUT_CURSOR_BOTTOM_RIGHT_CORNER FL_CURSOR_SE
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#define GLUT_CURSOR_BOTTOM_LEFT_CORNER FL_CURSOR_SW
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#define GLUT_CURSOR_INHERIT FL_CURSOR_DEFAULT
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#define GLUT_CURSOR_NONE FL_CURSOR_NONE
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#define GLUT_CURSOR_FULL_CROSSHAIR FL_CURSOR_CROSS
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//inline void glutWarpPointer(int x, int y);
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inline void glutEstablishOverlay() {glut_window->make_overlay_current();}
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inline void glutRemoveOverlay() {glut_window->hide_overlay();}
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inline void glutUseLayer(GLenum layer) {
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layer ? glut_window->make_overlay_current() : glut_window->make_current();}
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enum {GLUT_NORMAL, GLUT_OVERLAY};
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inline void glutPostOverlayRedisplay() {glut_window->redraw_overlay();}
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inline void glutShowOverlay() {glut_window->redraw_overlay();}
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inline void glutHideOverlay() {glut_window->hide_overlay();}
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int glutCreateMenu(void (*)(int));
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void glutDestroyMenu(int menu);
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inline int glutGetMenu() {return glut_menu;}
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inline void glutSetMenu(int m) {glut_menu = m;}
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void glutAddMenuEntry(char *label, int value);
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void glutAddSubMenu(char *label, int submenu);
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void glutChangeToMenuEntry(int item, char *label, int value);
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void glutChangeToSubMenu(int item, char *label, int submenu);
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void glutRemoveMenuItem(int item);
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inline void glutAttachMenu(int b) {glut_window->menu[b] = glut_menu;}
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inline void glutDetachMenu(int b) {glut_window->menu[b] = 0;}
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inline void glutDisplayFunc(void (*f)()) {glut_window->display = f;}
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inline void glutReshapeFunc(void (*f)(int w, int h)) {glut_window->reshape=f;}
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inline void glutKeyboardFunc(void (*f)(uchar key, int x, int y)) {
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glut_window->keyboard = f;}
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inline void glutMouseFunc(void (*f)(int b, int state, int x, int y)) {
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glut_window->mouse = f;}
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#define GLUT_LEFT_BUTTON 0
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#define GLUT_MIDDLE_BUTTON 1
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#define GLUT_RIGHT_BUTTON 2
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#define GLUT_DOWN 0
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#define GLUT_UP 1
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inline void glutMotionFunc(void (*f)(int x, int y)) {glut_window->motion= f;}
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inline void glutPassiveMotionFunc(void (*f)(int x, int y)) {
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glut_window->passivemotion= f;}
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inline void glutEntryFunc(void (*f)(int s)) {glut_window->entry = f;}
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enum {GLUT_LEFT, GLUT_ENTERED};
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inline void glutVisibilityFunc(void (*f)(int s)) {glut_window->visibility=f;}
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enum {GLUT_NOT_VISIBLE, GLUT_VISIBLE};
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inline void glutIdleFunc(void (*f)()) {Fl::set_idle(f);}
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// Warning: this cast may not work on all machines:
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inline void glutTimerFunc(unsigned int msec, void (*f)(int), int value) {
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Fl::add_timeout(msec*.001, (void (*)(void *))f, (void *)value);
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}
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inline void glutMenuStateFunc(void (*f)(int state)) {
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glut_menustate_function = f;}
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inline void glutMenuStatusFunc(void (*f)(int status, int x, int y)) {
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glut_menustatus_function = f;}
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enum {GLUT_MENU_NOT_IN_USE, GLUT_MENU_IN_USE};
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inline void glutSpecialFunc(void (*f)(int key, int x, int y)) {
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glut_window->special = f;}
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#define GLUT_KEY_F1 1
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#define GLUT_KEY_F2 2
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#define GLUT_KEY_F3 3
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#define GLUT_KEY_F4 4
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#define GLUT_KEY_F5 5
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#define GLUT_KEY_F6 6
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#define GLUT_KEY_F7 7
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#define GLUT_KEY_F8 8
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#define GLUT_KEY_F9 9
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#define GLUT_KEY_F10 10
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#define GLUT_KEY_F11 11
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#define GLUT_KEY_F12 12
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// WARNING: Different values than Glut uses:
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#define GLUT_KEY_LEFT FL_Left
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#define GLUT_KEY_UP FL_Up
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#define GLUT_KEY_RIGHT FL_Right
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#define GLUT_KEY_DOWN FL_Down
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#define GLUT_KEY_PAGE_UP FL_Page_Up
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#define GLUT_KEY_PAGE_DOWN FL_Page_Down
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#define GLUT_KEY_HOME FL_Home
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#define GLUT_KEY_END FL_End
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#define GLUT_KEY_INSERT FL_Insert
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//inline void glutSpaceballMotionFunc(void (*)(int x, int y, int z));
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//inline void glutSpaceballRotateFunc(void (*)(int x, int y, int z));
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//inline void glutSpaceballButtonFunc(void (*)(int button, int state));
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//inline void glutButtonBoxFunc(void (*)(int button, int state));
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//inline void glutDialsFunc(void (*)(int dial, int value));
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//inline void glutTabletMotionFunc(void (*)(int x, int y));
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//inline void glutTabletButtonFunc(void (*)(int button, int state, int x, int y));
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inline void glutOverlayDisplayFunc(void (*f)()) {
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glut_window->overlaydisplay = f;}
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//inline void glutWindowStatusFunc(void (*)(int state));
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//enum {GLUT_HIDDEN, GLUT_FULLY_RETAINED, GLUT_PARTIALLY_RETAINED,
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// GLUT_FULLY_COVERED};
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//inline void glutSetColor(int, GLfloat red, GLfloat green, GLfloat blue);
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//inline GLfloat glutGetColor(int ndx, int component);
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//#define GLUT_RED 0
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//#define GLUT_GREEN 1
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//#define GLUT_BLUE 2
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//inline void glutCopyColormap(int win);
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// Warning: values are changed from Glut!
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// Also relies on the GL_ symbols having values greater than 100
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int glutGet(GLenum type);
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enum {
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GLUT_RETURN_ZERO = 0,
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GLUT_WINDOW_X,
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GLUT_WINDOW_Y,
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GLUT_WINDOW_WIDTH,
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GLUT_WINDOW_HEIGHT,
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GLUT_WINDOW_PARENT,
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//GLUT_WINDOW_NUM_CHILDREN,
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//GLUT_WINDOW_CURSOR,
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GLUT_SCREEN_WIDTH,
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GLUT_SCREEN_HEIGHT,
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//GLUT_SCREEN_WIDTH_MM,
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//GLUT_SCREEN_HEIGHT_MM,
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GLUT_MENU_NUM_ITEMS,
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GLUT_DISPLAY_MODE_POSSIBLE,
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GLUT_INIT_WINDOW_X,
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GLUT_INIT_WINDOW_Y,
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GLUT_INIT_WINDOW_WIDTH,
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GLUT_INIT_WINDOW_HEIGHT,
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GLUT_INIT_DISPLAY_MODE,
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//GLUT_ELAPSED_TIME,
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GLUT_WINDOW_BUFFER_SIZE
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};
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#define GLUT_WINDOW_STENCIL_SIZE GL_STENCIL_BITS
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#define GLUT_WINDOW_DEPTH_SIZE GL_DEPTH_BITS
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#define GLUT_WINDOW_RED_SIZE GL_RED_BITS
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#define GLUT_WINDOW_GREEN_SIZE GL_GREEN_BITS
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#define GLUT_WINDOW_BLUE_SIZE GL_BLUE_BITS
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#define GLUT_WINDOW_ALPHA_SIZE GL_ALPHA_BITS
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#define GLUT_WINDOW_ACCUM_RED_SIZE GL_ACCUM_RED_BITS
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#define GLUT_WINDOW_ACCUM_GREEN_SIZE GL_ACCUM_GREEN_BITS
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#define GLUT_WINDOW_ACCUM_BLUE_SIZE GL_ACCUM_BLUE_BITS
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#define GLUT_WINDOW_ACCUM_ALPHA_SIZE GL_ACCUM_ALPHA_BITS
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#define GLUT_WINDOW_DOUBLEBUFFER GL_DOUBLEBUFFER
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#define GLUT_WINDOW_RGBA GL_RGBA
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#define GLUT_WINDOW_COLORMAP_SIZE GL_INDEX_BITS
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#ifdef GL_SAMPLES_SGIS
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#define GLUT_WINDOW_NUM_SAMPLES GL_SAMPLES_SGIS
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#else
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#define GLUT_WINDOW_NUM_SAMPLES GLUT_RETURN_ZERO
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#endif
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#define GLUT_WINDOW_STEREO GL_STEREO
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//int glutDeviceGet(GLenum type);
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//#define GLUT_HAS_KEYBOARD 600
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//#define GLUT_HAS_MOUSE 601
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//#define GLUT_HAS_SPACEBALL 602
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//#define GLUT_HAS_DIAL_AND_BUTTON_BOX 603
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//#define GLUT_HAS_TABLET 604
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//#define GLUT_NUM_MOUSE_BUTTONS 605
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//#define GLUT_NUM_SPACEBALL_BUTTONS 606
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//#define GLUT_NUM_BUTTON_BOX_BUTTONS 607
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//#define GLUT_NUM_DIALS 608
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//#define GLUT_NUM_TABLET_BUTTONS 609
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inline int glutGetModifiers() {return Fl::event_state();}
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// WARNING: these values are different than Glut uses:
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#define GLUT_ACTIVE_SHIFT FL_SHIFT
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#define GLUT_ACTIVE_CTRL FL_CTRL
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#define GLUT_ACTIVE_ALT FL_ALT
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int glutLayerGet(GLenum);
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#define GLUT_OVERLAY_POSSIBLE 800
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//#define GLUT_LAYER_IN_USE 801
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//#define GLUT_HAS_OVERLAY 802
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#define GLUT_TRANSPARENT_INDEX 803
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#define GLUT_NORMAL_DAMAGED 804
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#define GLUT_OVERLAY_DAMAGED 805
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//inline int glutVideoResizeGet(GLenum param);
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//#define GLUT_VIDEO_RESIZE_POSSIBLE 900
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//#define GLUT_VIDEO_RESIZE_IN_USE 901
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//#define GLUT_VIDEO_RESIZE_X_DELTA 902
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//#define GLUT_VIDEO_RESIZE_Y_DELTA 903
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//#define GLUT_VIDEO_RESIZE_WIDTH_DELTA 904
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//#define GLUT_VIDEO_RESIZE_HEIGHT_DELTA 905
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//#define GLUT_VIDEO_RESIZE_X 906
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//#define GLUT_VIDEO_RESIZE_Y 907
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//#define GLUT_VIDEO_RESIZE_WIDTH 908
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//#define GLUT_VIDEO_RESIZE_HEIGHT 909
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//inline void glutSetupVideoResizing();
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//inline void glutStopVideoResizing();
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//inline void glutVideoResize(int x, int y, int width, int height);
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//inline void glutVideoPan(int x, int y, int width, int height);
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////////////////////////////////////////////////////////////////
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// Emulated Glut drawing functions:
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// Font argument must be a void* for compatability, so...
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extern struct Glut_Bitmap_Font {uchar font; int size;}
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glutBitmap9By15, glutBitmap8By13, glutBitmapTimesRoman10,
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glutBitmapTimesRoman24, glutBitmapHelvetica10, glutBitmapHelvetica12,
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glutBitmapHelvetica18;
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#define GLUT_BITMAP_9_BY_15 (&glutBitmap9By15)
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#define GLUT_BITMAP_8_BY_13 (&glutBitmap8By13)
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#define GLUT_BITMAP_TIMES_ROMAN_10 (&glutBitmapTimesRoman10)
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#define GLUT_BITMAP_TIMES_ROMAN_24 (&glutBitmapTimesRoman24)
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#define GLUT_BITMAP_HELVETICA_10 (&glutBitmapHelvetica10)
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#define GLUT_BITMAP_HELVETICA_12 (&glutBitmapHelvetica12)
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#define GLUT_BITMAP_HELVETICA_18 (&glutBitmapHelvetica18)
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void glutBitmapCharacter(void *font, int character);
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int glutBitmapWidth(void *font, int character);
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////////////////////////////////////////////////////////////////
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// Glut drawing functions. These are NOT emulated but you can
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// link in the glut library to get them. This assummes the object
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// files in Glut remain as they currently are so that there are
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// not symbol conflicts with the above.
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extern "C" {
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extern int glutExtensionSupported(char *name);
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/* Stroke font opaque addresses (use constants instead in source code). */
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extern void *glutStrokeRoman;
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extern void *glutStrokeMonoRoman;
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/* Stroke font constants (use these in GLUT program). */
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#define GLUT_STROKE_ROMAN (&glutStrokeRoman)
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#define GLUT_STROKE_MONO_ROMAN (&glutStrokeMonoRoman)
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/* GLUT font sub-API */
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extern void glutStrokeCharacter(void *font, int character);
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extern int glutStrokeWidth(void *font, int character);
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/* GLUT pre-built models sub-API */
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extern void glutWireSphere(GLdouble radius, GLint slices, GLint stacks);
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extern void glutSolidSphere(GLdouble radius, GLint slices, GLint stacks);
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extern void glutWireCone(GLdouble base, GLdouble height, GLint slices, GLint stacks);
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extern void glutSolidCone(GLdouble base, GLdouble height, GLint slices, GLint stacks);
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extern void glutWireCube(GLdouble size);
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extern void glutSolidCube(GLdouble size);
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extern void glutWireTorus(GLdouble innerRadius, GLdouble outerRadius, GLint sides, GLint rings);
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extern void glutSolidTorus(GLdouble innerRadius, GLdouble outerRadius, GLint sides, GLint rings);
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extern void glutWireDodecahedron();
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extern void glutSolidDodecahedron();
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extern void glutWireTeapot(GLdouble size);
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extern void glutSolidTeapot(GLdouble size);
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extern void glutWireOctahedron();
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extern void glutSolidOctahedron();
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extern void glutWireTetrahedron();
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extern void glutSolidTetrahedron();
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extern void glutWireIcosahedron();
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extern void glutSolidIcosahedron();
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}
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#endif /* __glut_h__ */
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