+++ /dev/null
-/*
-MiniGLUT - minimal GLUT subset without dependencies
-Copyright (C) 2020 John Tsiombikas <nuclear@member.fsf.org>
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-This program 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 General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program. If not, see <https://www.gnu.org/licenses/>.
- */
-#if defined(__unix__)
-
-#include <X11/Xlib.h>
-#include <X11/keysym.h>
-#include <X11/cursorfont.h>
-#include <GL/glx.h>
-#define BUILD_X11
-
-#ifndef GLX_SAMPLE_BUFFERS_ARB
-#define GLX_SAMPLE_BUFFERS_ARB 100000
-#define GLX_SAMPLES_ARB 100001
-#endif
-#ifndef GLX_FRAMEBUFFER_SRGB_CAPABLE_ARB
-#define GLX_FRAMEBUFFER_SRGB_CAPABLE_ARB 0x20b2
-#endif
-
-static Display *dpy;
-static Window win, root;
-static int scr;
-static GLXContext ctx;
-static Atom xa_wm_proto, xa_wm_del_win;
-static Atom xa_net_wm_state, xa_net_wm_state_fullscr;
-static Atom xa_motif_wm_hints;
-static Atom xa_motion_event, xa_button_press_event, xa_button_release_event, xa_command_event;
-static unsigned int evmask;
-static Cursor blank_cursor;
-
-static int have_netwm_fullscr(void);
-
-#elif defined(_WIN32)
-
-#include <windows.h>
-#define BUILD_WIN32
-
-static HRESULT CALLBACK handle_message(HWND win, unsigned int msg, WPARAM wparam, LPARAM lparam);
-
-static HINSTANCE hinst;
-static HWND win;
-static HDC dc;
-static HGLRC ctx;
-
-#else
-#error unsupported platform
-#endif
-#include <GL/gl.h>
-#include "miniglut.h"
-
-struct ctx_info {
- int rsize, gsize, bsize, asize;
- int zsize, ssize;
- int dblbuf;
- int samples;
- int stereo;
- int srgb;
-};
-
-static void cleanup(void);
-static void create_window(const char *title);
-static void get_window_pos(int *x, int *y);
-static void get_window_size(int *w, int *h);
-static void get_screen_size(int *scrw, int *scrh);
-
-static long get_msec(void);
-static void panic(const char *msg);
-static void sys_exit(int status);
-static int sys_write(int fd, const void *buf, int count);
-
-
-static int init_x = -1, init_y, init_width = 256, init_height = 256;
-static unsigned int init_mode;
-
-static struct ctx_info ctx_info;
-static int cur_cursor = GLUT_CURSOR_INHERIT;
-
-static glut_cb cb_display;
-static glut_cb cb_idle;
-static glut_cb_reshape cb_reshape;
-static glut_cb_state cb_vis, cb_entry;
-static glut_cb_keyb cb_keydown, cb_keyup;
-static glut_cb_special cb_skeydown, cb_skeyup;
-static glut_cb_mouse cb_mouse;
-static glut_cb_motion cb_motion, cb_passive;
-static glut_cb_sbmotion cb_sball_motion, cb_sball_rotate;
-static glut_cb_sbbutton cb_sball_button;
-
-static int fullscreen;
-static int prev_win_x, prev_win_y, prev_win_width, prev_win_height;
-
-static int win_width, win_height;
-static int mapped;
-static int quit;
-static int upd_pending;
-static int modstate;
-
-void glutInit(int *argc, char **argv)
-{
-#ifdef BUILD_X11
- Pixmap blankpix = 0;
- XColor xcol;
-
- if(!(dpy = XOpenDisplay(0))) {
- panic("Failed to connect to the X server\n");
- }
- scr = DefaultScreen(dpy);
- root = RootWindow(dpy, scr);
- xa_wm_proto = XInternAtom(dpy, "WM_PROTOCOLS", False);
- xa_wm_del_win = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
- xa_motif_wm_hints = XInternAtom(dpy, "_MOTIF_WM_HINTS", False);
- xa_net_wm_state_fullscr = XInternAtom(dpy, "_NET_WM_STATE_FULLSCREEN", False);
- if(have_netwm_fullscr()) {
- xa_net_wm_state = XInternAtom(dpy, "_NET_WM_STATE", False);
- }
-
- xa_motion_event = XInternAtom(dpy, "MotionEvent", True);
- xa_button_press_event = XInternAtom(dpy, "ButtonPressEvent", True);
- xa_button_release_event = XInternAtom(dpy, "ButtonReleaseEvent", True);
- xa_command_event = XInternAtom(dpy, "CommandEvent", True);
-
- evmask = ExposureMask | StructureNotifyMask;
-
- if((blankpix = XCreateBitmapFromData(dpy, root, (char*)&blankpix, 1, 1))) {
- blank_cursor = XCreatePixmapCursor(dpy, blankpix, blankpix, &xcol, &xcol, 0, 0);
- XFreePixmap(dpy, blankpix);
- }
-
-#endif
-#ifdef BUILD_WIN32
- WNDCLASSEX wc = {0};
-
- hinst = GetModuleHandle(0);
-
- wc.cbSize = sizeof wc;
- wc.hbrBackground = GetStockObject(BLACK_BRUSH);
- wc.hCursor = LoadCursor(0, IDC_ARROW);
- wc.hIcon = wc.hIconSm = LoadIcon(0, IDI_APPLICATION);
- wc.hInstance = hinst;
- wc.lpfnWndProc = handle_message;
- wc.lpszClassName = "MiniGLUT";
- wc.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC;
- if(!RegisterClassEx(&wc)) {
- panic("Failed to register \"MiniGLUT\" window class\n");
- }
-
- if(init_x == -1) {
- get_screen_size(&init_x, &init_y);
- init_x >>= 3;
- init_y >>= 3;
- }
-#endif
-}
-
-void glutInitWindowPosition(int x, int y)
-{
- init_x = x;
- init_y = y;
-}
-
-void glutInitWindowSize(int xsz, int ysz)
-{
- init_width = xsz;
- init_height = ysz;
-}
-
-void glutInitDisplayMode(unsigned int mode)
-{
- init_mode = mode;
-}
-
-void glutCreateWindow(const char *title)
-{
- create_window(title);
-}
-
-void glutExit(void)
-{
- quit = 1;
-}
-
-void glutMainLoop(void)
-{
- while(!quit) {
- glutMainLoopEvent();
- }
-}
-
-void glutPostRedisplay(void)
-{
- upd_pending = 1;
-}
-
-#define UPD_EVMASK(x) \
- do { \
- if(func) { \
- evmask |= x; \
- } else { \
- evmask &= ~(x); \
- } \
- if(win) XSelectInput(dpy, win, evmask); \
- } while(0)
-
-
-void glutIdleFunc(glut_cb func)
-{
- cb_idle = func;
-}
-
-void glutDisplayFunc(glut_cb func)
-{
- cb_display = func;
-}
-
-void glutReshapeFunc(glut_cb_reshape func)
-{
- cb_reshape = func;
-}
-
-void glutVisibilityFunc(glut_cb_state func)
-{
- cb_vis = func;
-#ifdef BUILD_X11
- UPD_EVMASK(VisibilityChangeMask);
-#endif
-}
-
-void glutEntryFunc(glut_cb_state func)
-{
- cb_entry = func;
-#ifdef BUILD_X11
- UPD_EVMASK(EnterWindowMask | LeaveWindowMask);
-#endif
-}
-
-void glutKeyboardFunc(glut_cb_keyb func)
-{
- cb_keydown = func;
-#ifdef BUILD_X11
- UPD_EVMASK(KeyPressMask);
-#endif
-}
-
-void glutKeyboardUpFunc(glut_cb_keyb func)
-{
- cb_keyup = func;
-#ifdef BUILD_X11
- UPD_EVMASK(KeyReleaseMask);
-#endif
-}
-
-void glutSpecialFunc(glut_cb_special func)
-{
- cb_skeydown = func;
-#ifdef BUILD_X11
- UPD_EVMASK(KeyPressMask);
-#endif
-}
-
-void glutSpecialUpFunc(glut_cb_special func)
-{
- cb_skeyup = func;
-#ifdef BUILD_X11
- UPD_EVMASK(KeyReleaseMask);
-#endif
-}
-
-void glutMouseFunc(glut_cb_mouse func)
-{
- cb_mouse = func;
-#ifdef BUILD_X11
- UPD_EVMASK(ButtonPressMask | ButtonReleaseMask);
-#endif
-}
-
-void glutMotionFunc(glut_cb_motion func)
-{
- cb_motion = func;
-#ifdef BUILD_X11
- UPD_EVMASK(ButtonMotionMask);
-#endif
-}
-
-void glutPassiveMotionFunc(glut_cb_motion func)
-{
- cb_passive = func;
-#ifdef BUILD_X11
- UPD_EVMASK(PointerMotionMask);
-#endif
-}
-
-void glutSpaceballMotionFunc(glut_cb_sbmotion func)
-{
- cb_sball_motion = func;
-}
-
-void glutSpaceballRotateFunc(glut_cb_sbmotion func)
-{
- cb_sball_rotate = func;
-}
-
-void glutSpaceballButtonFunc(glut_cb_sbbutton func)
-{
- cb_sball_button = func;
-}
-
-int glutGet(unsigned int s)
-{
- int x, y;
- switch(s) {
- case GLUT_WINDOW_X:
- get_window_pos(&x, &y);
- return x;
- case GLUT_WINDOW_Y:
- get_window_pos(&x, &y);
- return y;
- case GLUT_WINDOW_WIDTH:
- get_window_size(&x, &y);
- return x;
- case GLUT_WINDOW_HEIGHT:
- get_window_size(&x, &y);
- return y;
- case GLUT_WINDOW_BUFFER_SIZE:
- return ctx_info.rsize + ctx_info.gsize + ctx_info.bsize + ctx_info.asize;
- case GLUT_WINDOW_STENCIL_SIZE:
- return ctx_info.ssize;
- case GLUT_WINDOW_DEPTH_SIZE:
- return ctx_info.zsize;
- case GLUT_WINDOW_RED_SIZE:
- return ctx_info.rsize;
- case GLUT_WINDOW_GREEN_SIZE:
- return ctx_info.gsize;
- case GLUT_WINDOW_BLUE_SIZE:
- return ctx_info.bsize;
- case GLUT_WINDOW_ALPHA_SIZE:
- return ctx_info.asize;
- case GLUT_WINDOW_DOUBLEBUFFER:
- return ctx_info.dblbuf;
- case GLUT_WINDOW_RGBA:
- return 1;
- case GLUT_WINDOW_NUM_SAMPLES:
- return ctx_info.samples;
- case GLUT_WINDOW_STEREO:
- return ctx_info.stereo;
- case GLUT_WINDOW_SRGB:
- return ctx_info.srgb;
- case GLUT_WINDOW_CURSOR:
- return cur_cursor;
- case GLUT_SCREEN_WIDTH:
- get_screen_size(&x, &y);
- return x;
- case GLUT_SCREEN_HEIGHT:
- get_screen_size(&x, &y);
- return y;
- case GLUT_INIT_DISPLAY_MODE:
- return init_mode;
- case GLUT_INIT_WINDOW_X:
- return init_x;
- case GLUT_INIT_WINDOW_Y:
- return init_y;
- case GLUT_INIT_WINDOW_WIDTH:
- return init_width;
- case GLUT_INIT_WINDOW_HEIGHT:
- return init_height;
- case GLUT_ELAPSED_TIME:
- return get_msec();
- default:
- break;
- }
- return 0;
-}
-
-int glutGetModifiers(void)
-{
- return modstate;
-}
-
-static int is_space(int c)
-{
- return c == ' ' || c == '\t' || c == '\v' || c == '\n' || c == '\r';
-}
-
-static const char *skip_space(const char *s)
-{
- while(*s && is_space(*s)) s++;
- return s;
-}
-
-int glutExtensionSupported(char *ext)
-{
- const char *str, *eptr;
-
- if(!(str = (const char*)glGetString(GL_EXTENSIONS))) {
- return 0;
- }
-
- while(*str) {
- str = skip_space(str);
- eptr = skip_space(ext);
- while(*str && !is_space(*str) && *eptr && *str == *eptr) {
- str++;
- eptr++;
- }
- if((!*str || is_space(*str)) && !*eptr) {
- return 1;
- }
- while(*str && !is_space(*str)) str++;
- }
-
- return 0;
-}
-
-
-/* --------------- UNIX/X11 implementation ----------------- */
-#ifdef BUILD_X11
-enum {
- SPNAV_EVENT_ANY, /* used by spnav_remove_events() */
- SPNAV_EVENT_MOTION,
- SPNAV_EVENT_BUTTON /* includes both press and release */
-};
-
-struct spnav_event_motion {
- int type;
- int x, y, z;
- int rx, ry, rz;
- unsigned int period;
- int *data;
-};
-
-struct spnav_event_button {
- int type;
- int press;
- int bnum;
-};
-
-union spnav_event {
- int type;
- struct spnav_event_motion motion;
- struct spnav_event_button button;
-};
-
-
-static void handle_event(XEvent *ev);
-
-static int spnav_window(Window win);
-static int spnav_event(const XEvent *xev, union spnav_event *event);
-static int spnav_remove_events(int type);
-
-
-void glutMainLoopEvent(void)
-{
- XEvent ev;
-
- if(!cb_display) {
- panic("display callback not set");
- }
-
- if(!upd_pending && !cb_idle) {
- XNextEvent(dpy, &ev);
- handle_event(&ev);
- if(quit) goto end;
- }
- while(XPending(dpy)) {
- XNextEvent(dpy, &ev);
- handle_event(&ev);
- if(quit) goto end;
- }
-
- if(cb_idle) {
- cb_idle();
- }
-
- if(upd_pending && mapped) {
- upd_pending = 0;
- cb_display();
- }
-
-end:
- if(quit) {
- cleanup();
- }
-}
-
-static void cleanup(void)
-{
- if(win) {
- spnav_window(root);
- glXMakeCurrent(dpy, 0, 0);
- XDestroyWindow(dpy, win);
- }
-}
-
-static KeySym translate_keysym(KeySym sym)
-{
- switch(sym) {
- case XK_Escape:
- return 27;
- case XK_BackSpace:
- return '\b';
- case XK_Linefeed:
- return '\r';
- case XK_Return:
- return '\n';
- case XK_Delete:
- return 127;
- case XK_Tab:
- return '\t';
- default:
- break;
- }
- return sym;
-}
-
-static void handle_event(XEvent *ev)
-{
- KeySym sym;
- union spnav_event sev;
-
- switch(ev->type) {
- case MapNotify:
- mapped = 1;
- break;
- case UnmapNotify:
- mapped = 0;
- break;
- case ConfigureNotify:
- if(cb_reshape && (ev->xconfigure.width != win_width || ev->xconfigure.height != win_height)) {
- win_width = ev->xconfigure.width;
- win_height = ev->xconfigure.height;
- cb_reshape(ev->xconfigure.width, ev->xconfigure.height);
- }
- break;
-
- case ClientMessage:
- if(ev->xclient.message_type == xa_wm_proto) {
- if(ev->xclient.data.l[0] == xa_wm_del_win) {
- quit = 1;
- }
- }
- if(spnav_event(ev, &sev)) {
- switch(sev.type) {
- case SPNAV_EVENT_MOTION:
- if(cb_sball_motion) {
- cb_sball_motion(sev.motion.x, sev.motion.y, sev.motion.z);
- }
- if(cb_sball_rotate) {
- cb_sball_rotate(sev.motion.rx, sev.motion.ry, sev.motion.rz);
- }
- spnav_remove_events(SPNAV_EVENT_MOTION);
- break;
-
- case SPNAV_EVENT_BUTTON:
- if(cb_sball_button) {
- cb_sball_button(sev.button.bnum + 1, sev.button.press ? GLUT_DOWN : GLUT_UP);
- }
- break;
-
- default:
- break;
- }
- }
- break;
-
- case Expose:
- upd_pending = 1;
- break;
-
- case KeyPress:
- case KeyRelease:
- modstate = ev->xkey.state & (ShiftMask | ControlMask | Mod1Mask);
- if(!(sym = XLookupKeysym(&ev->xkey, 0))) {
- break;
- }
- sym = translate_keysym(sym);
- if(sym < 256) {
- if(ev->type == KeyPress) {
- if(cb_keydown) cb_keydown((unsigned char)sym, ev->xkey.x, ev->xkey.y);
- } else {
- if(cb_keyup) cb_keyup((unsigned char)sym, ev->xkey.x, ev->xkey.y);
- }
- } else {
- if(ev->type == KeyPress) {
- if(cb_skeydown) cb_skeydown(sym, ev->xkey.x, ev->xkey.y);
- } else {
- if(cb_skeyup) cb_skeyup(sym, ev->xkey.x, ev->xkey.y);
- }
- }
- break;
-
- case ButtonPress:
- case ButtonRelease:
- modstate = ev->xbutton.state & (ShiftMask | ControlMask | Mod1Mask);
- if(cb_mouse) {
- int bn = ev->xbutton.button - Button1;
- cb_mouse(bn, ev->type == ButtonPress ? GLUT_DOWN : GLUT_UP,
- ev->xbutton.x, ev->xbutton.y);
- }
- break;
-
- case MotionNotify:
- if(ev->xmotion.state & (Button1Mask | Button2Mask | Button3Mask | Button4Mask | Button5Mask)) {
- if(cb_motion) cb_motion(ev->xmotion.x, ev->xmotion.y);
- } else {
- if(cb_passive) cb_passive(ev->xmotion.x, ev->xmotion.y);
- }
- break;
-
- case VisibilityNotify:
- if(cb_vis) {
- cb_vis(ev->xvisibility.state == VisibilityFullyObscured ? GLUT_NOT_VISIBLE : GLUT_VISIBLE);
- }
- break;
- case EnterNotify:
- if(cb_entry) cb_entry(GLUT_ENTERED);
- break;
- case LeaveNotify:
- if(cb_entry) cb_entry(GLUT_LEFT);
- break;
- }
-}
-
-void glutSwapBuffers(void)
-{
- glXSwapBuffers(dpy, win);
-}
-
-/* BUG:
- * set_fullscreen_mwm removes the decorations with MotifWM hints, and then it
- * needs to resize the window to make it fullscreen. The way it does this is by
- * querying the size of the root window (see get_screen_size), which in the
- * case of multi-monitor setups will be the combined size of all monitors.
- * This is problematic; the way to solve it is to use the XRandR extension, or
- * the Xinerama extension, to figure out the dimensions of the correct video
- * output, which would add potentially two extension support libraries to our
- * dependencies list.
- * Moreover, any X installation modern enough to support XR&R will almost
- * certainly be running a window manager supporting the EHWM
- * _NET_WM_STATE_FULLSCREEN method (set_fullscreen_ewmh), which does not rely
- * on manual resizing, and is used in preference if available, making this
- * whole endeavor pointless.
- * So I'll just leave it with set_fullscreen_mwm covering the entire
- * multi-monitor area for now.
- */
-
-struct mwm_hints {
- unsigned long flags;
- unsigned long functions;
- unsigned long decorations;
- long input_mode;
- unsigned long status;
-};
-
-#define MWM_HINTS_DECORATIONS 2
-#define MWM_DECOR_ALL 1
-
-static void set_fullscreen_mwm(int fs)
-{
- struct mwm_hints hints;
- int scr_width, scr_height;
-
- if(fs) {
- get_window_pos(&prev_win_x, &prev_win_y);
- get_window_size(&prev_win_width, &prev_win_height);
- get_screen_size(&scr_width, &scr_height);
-
- hints.decorations = 0;
- hints.flags = MWM_HINTS_DECORATIONS;
- XChangeProperty(dpy, win, xa_motif_wm_hints, xa_motif_wm_hints, 32,
- PropModeReplace, (unsigned char*)&hints, 5);
-
- XMoveResizeWindow(dpy, win, 0, 0, scr_width, scr_height);
- } else {
- XDeleteProperty(dpy, win, xa_motif_wm_hints);
- XMoveResizeWindow(dpy, win, prev_win_x, prev_win_y, prev_win_width, prev_win_height);
- }
-}
-
-static int have_netwm_fullscr(void)
-{
- int fmt;
- long offs = 0;
- unsigned long i, count, rem;
- Atom prop[8], type;
- Atom xa_net_supported = XInternAtom(dpy, "_NET_SUPPORTED", False);
-
- do {
- XGetWindowProperty(dpy, root, xa_net_supported, offs, 8, False, AnyPropertyType,
- &type, &fmt, &count, &rem, (unsigned char**)prop);
-
- for(i=0; i<count; i++) {
- if(prop[i] == xa_net_wm_state_fullscr) {
- return 1;
- }
- }
- offs += count;
- } while(rem > 0);
-
- return 0;
-}
-
-static void set_fullscreen_ewmh(int fs)
-{
- XClientMessageEvent msg = {0};
-
- msg.type = ClientMessage;
- msg.window = win;
- msg.message_type = xa_net_wm_state; /* _NET_WM_STATE */
- msg.format = 32;
- msg.data.l[0] = fs ? 1 : 0;
- msg.data.l[1] = xa_net_wm_state_fullscr; /* _NET_WM_STATE_FULLSCREEN */
- msg.data.l[2] = 0;
- msg.data.l[3] = 1; /* source regular application */
- XSendEvent(dpy, root, False, SubstructureNotifyMask | SubstructureRedirectMask, (XEvent*)&msg);
-}
-
-static void set_fullscreen(int fs)
-{
- if(fullscreen == fs) return;
-
- if(xa_net_wm_state && xa_net_wm_state_fullscr) {
- set_fullscreen_ewmh(fs);
- fullscreen = fs;
- } else if(xa_motif_wm_hints) {
- set_fullscreen_mwm(fs);
- fullscreen = fs;
- }
-}
-
-void glutPositionWindow(int x, int y)
-{
- set_fullscreen(0);
- XMoveWindow(dpy, win, x, y);
-}
-
-void glutReshapeWindow(int xsz, int ysz)
-{
- set_fullscreen(0);
- XResizeWindow(dpy, win, xsz, ysz);
-}
-
-void glutFullScreen(void)
-{
- set_fullscreen(1);
-}
-
-void glutSetWindowTitle(const char *title)
-{
- XTextProperty tprop;
- if(!XStringListToTextProperty((char**)&title, 1, &tprop)) {
- return;
- }
- XSetWMName(dpy, win, &tprop);
- XFree(tprop.value);
-}
-
-void glutSetIconTitle(const char *title)
-{
- XTextProperty tprop;
- if(!XStringListToTextProperty((char**)&title, 1, &tprop)) {
- return;
- }
- XSetWMIconName(dpy, win, &tprop);
- XFree(tprop.value);
-}
-
-void glutSetCursor(int cidx)
-{
- Cursor cur = None;
-
- switch(cidx) {
- case GLUT_CURSOR_LEFT_ARROW:
- cur = XCreateFontCursor(dpy, XC_left_ptr);
- break;
- case GLUT_CURSOR_INHERIT:
- break;
- case GLUT_CURSOR_NONE:
- cur = blank_cursor;
- break;
- default:
- return;
- }
-
- XDefineCursor(dpy, win, cur);
- cur_cursor = cidx;
-}
-
-static XVisualInfo *choose_visual(unsigned int mode)
-{
- XVisualInfo *vi;
- int attr[32];
- int *aptr = attr;
- int *samples = 0;
-
- if(mode & GLUT_DOUBLE) {
- *aptr++ = GLX_DOUBLEBUFFER;
- }
-
- if(mode & GLUT_INDEX) {
- *aptr++ = GLX_BUFFER_SIZE;
- *aptr++ = 1;
- } else {
- *aptr++ = GLX_RGBA;
- *aptr++ = GLX_RED_SIZE; *aptr++ = 4;
- *aptr++ = GLX_GREEN_SIZE; *aptr++ = 4;
- *aptr++ = GLX_BLUE_SIZE; *aptr++ = 4;
- }
- if(mode & GLUT_ALPHA) {
- *aptr++ = GLX_ALPHA_SIZE;
- *aptr++ = 4;
- }
- if(mode & GLUT_DEPTH) {
- *aptr++ = GLX_DEPTH_SIZE;
- *aptr++ = 16;
- }
- if(mode & GLUT_STENCIL) {
- *aptr++ = GLX_STENCIL_SIZE;
- *aptr++ = 1;
- }
- if(mode & GLUT_ACCUM) {
- *aptr++ = GLX_ACCUM_RED_SIZE; *aptr++ = 1;
- *aptr++ = GLX_ACCUM_GREEN_SIZE; *aptr++ = 1;
- *aptr++ = GLX_ACCUM_BLUE_SIZE; *aptr++ = 1;
- }
- if(mode & GLUT_STEREO) {
- *aptr++ = GLX_STEREO;
- }
- if(mode & GLUT_SRGB) {
- *aptr++ = GLX_FRAMEBUFFER_SRGB_CAPABLE_ARB;
- }
- if(mode & GLUT_MULTISAMPLE) {
- *aptr++ = GLX_SAMPLE_BUFFERS_ARB;
- *aptr++ = 1;
- *aptr++ = GLX_SAMPLES_ARB;
- samples = aptr;
- *aptr++ = 32;
- }
- *aptr++ = None;
-
- if(!samples) {
- return glXChooseVisual(dpy, scr, attr);
- }
- while(!(vi = glXChooseVisual(dpy, scr, attr)) && *samples) {
- *samples >>= 1;
- if(!*samples) {
- aptr[-3] = None;
- }
- }
- return vi;
-}
-
-static void create_window(const char *title)
-{
- XSetWindowAttributes xattr = {0};
- XVisualInfo *vi;
- unsigned int xattr_mask;
- unsigned int mode = init_mode;
-
- if(!(vi = choose_visual(mode))) {
- mode &= ~GLUT_SRGB;
- if(!(vi = choose_visual(mode))) {
- panic("Failed to find compatible visual\n");
- }
- }
-
- if(!(ctx = glXCreateContext(dpy, vi, 0, True))) {
- XFree(vi);
- panic("Failed to create OpenGL context\n");
- }
-
- glXGetConfig(dpy, vi, GLX_RED_SIZE, &ctx_info.rsize);
- glXGetConfig(dpy, vi, GLX_GREEN_SIZE, &ctx_info.gsize);
- glXGetConfig(dpy, vi, GLX_BLUE_SIZE, &ctx_info.bsize);
- glXGetConfig(dpy, vi, GLX_ALPHA_SIZE, &ctx_info.asize);
- glXGetConfig(dpy, vi, GLX_DEPTH_SIZE, &ctx_info.zsize);
- glXGetConfig(dpy, vi, GLX_STENCIL_SIZE, &ctx_info.ssize);
- glXGetConfig(dpy, vi, GLX_DOUBLEBUFFER, &ctx_info.dblbuf);
- glXGetConfig(dpy, vi, GLX_STEREO, &ctx_info.stereo);
- glXGetConfig(dpy, vi, GLX_SAMPLES_ARB, &ctx_info.samples);
- glXGetConfig(dpy, vi, GLX_FRAMEBUFFER_SRGB_CAPABLE_ARB, &ctx_info.srgb);
-
- xattr.background_pixel = BlackPixel(dpy, scr);
- xattr.colormap = XCreateColormap(dpy, root, vi->visual, AllocNone);
- xattr_mask = CWBackPixel | CWColormap | CWBackPixmap | CWBorderPixel;
- if(!(win = XCreateWindow(dpy, root, init_x, init_y, init_width, init_height, 0,
- vi->depth, InputOutput, vi->visual, xattr_mask, &xattr))) {
- XFree(vi);
- glXDestroyContext(dpy, ctx);
- panic("Failed to create window\n");
- }
- XFree(vi);
-
- XSelectInput(dpy, win, evmask);
-
- spnav_window(win);
-
- glutSetWindowTitle(title);
- glutSetIconTitle(title);
- XSetWMProtocols(dpy, win, &xa_wm_del_win, 1);
- XMapWindow(dpy, win);
-
- glXMakeCurrent(dpy, win, ctx);
-}
-
-static void get_window_pos(int *x, int *y)
-{
- Window child;
- XTranslateCoordinates(dpy, win, root, 0, 0, x, y, &child);
-}
-
-static void get_window_size(int *w, int *h)
-{
- XWindowAttributes wattr;
- XGetWindowAttributes(dpy, win, &wattr);
- *w = wattr.width;
- *h = wattr.height;
-}
-
-static void get_screen_size(int *scrw, int *scrh)
-{
- XWindowAttributes wattr;
- XGetWindowAttributes(dpy, root, &wattr);
- *scrw = wattr.width;
- *scrh = wattr.height;
-}
-
-
-/* spaceball */
-enum {
- CMD_APP_WINDOW = 27695,
- CMD_APP_SENS
-};
-
-static Window get_daemon_window(Display *dpy);
-static int catch_badwin(Display *dpy, XErrorEvent *err);
-
-#define SPNAV_INITIALIZED (xa_motion_event)
-
-static int spnav_window(Window win)
-{
- int (*prev_xerr_handler)(Display*, XErrorEvent*);
- XEvent xev;
- Window daemon_win;
-
- if(!SPNAV_INITIALIZED) {
- return -1;
- }
-
- if(!(daemon_win = get_daemon_window(dpy))) {
- return -1;
- }
-
- prev_xerr_handler = XSetErrorHandler(catch_badwin);
-
- xev.type = ClientMessage;
- xev.xclient.send_event = False;
- xev.xclient.display = dpy;
- xev.xclient.window = win;
- xev.xclient.message_type = xa_command_event;
- xev.xclient.format = 16;
- xev.xclient.data.s[0] = ((unsigned int)win & 0xffff0000) >> 16;
- xev.xclient.data.s[1] = (unsigned int)win & 0xffff;
- xev.xclient.data.s[2] = CMD_APP_WINDOW;
-
- XSendEvent(dpy, daemon_win, False, 0, &xev);
- XSync(dpy, False);
-
- XSetErrorHandler(prev_xerr_handler);
- return 0;
-}
-
-static Bool match_events(Display *dpy, XEvent *xev, char *arg)
-{
- int evtype = *(int*)arg;
-
- if(xev->type != ClientMessage) {
- return False;
- }
-
- if(xev->xclient.message_type == xa_motion_event) {
- return !evtype || evtype == SPNAV_EVENT_MOTION ? True : False;
- }
- if(xev->xclient.message_type == xa_button_press_event ||
- xev->xclient.message_type == xa_button_release_event) {
- return !evtype || evtype == SPNAV_EVENT_BUTTON ? True : False;
- }
- return False;
-}
-
-static int spnav_remove_events(int type)
-{
- int rm_count = 0;
- XEvent xev;
- while(XCheckIfEvent(dpy, &xev, match_events, (char*)&type)) {
- rm_count++;
- }
- return rm_count;
-}
-
-static int spnav_event(const XEvent *xev, union spnav_event *event)
-{
- int i;
- int xmsg_type;
-
- xmsg_type = xev->xclient.message_type;
-
- if(xmsg_type != xa_motion_event && xmsg_type != xa_button_press_event &&
- xmsg_type != xa_button_release_event) {
- return 0;
- }
-
- if(xmsg_type == xa_motion_event) {
- event->type = SPNAV_EVENT_MOTION;
- event->motion.data = &event->motion.x;
-
- for(i=0; i<6; i++) {
- event->motion.data[i] = xev->xclient.data.s[i + 2];
- }
- event->motion.period = xev->xclient.data.s[8];
- } else {
- event->type = SPNAV_EVENT_BUTTON;
- event->button.press = xmsg_type == xa_button_press_event ? 1 : 0;
- event->button.bnum = xev->xclient.data.s[2];
- }
- return event->type;
-}
-
-static int mglut_strcmp(const char *s1, const char *s2)
-{
- while(*s1 && *s1 == *s2) {
- s1++;
- s2++;
- }
- return *s1 - *s2;
-}
-
-static Window get_daemon_window(Display *dpy)
-{
- Window win;
- XTextProperty wname;
- Atom type;
- int fmt;
- unsigned long nitems, bytes_after;
- unsigned char *prop;
-
- XGetWindowProperty(dpy, root, xa_command_event, 0, 1, False, AnyPropertyType,
- &type, &fmt, &nitems, &bytes_after, &prop);
- if(!prop) {
- return 0;
- }
-
- win = *(Window*)prop;
- XFree(prop);
-
- if(!XGetWMName(dpy, win, &wname) || mglut_strcmp("Magellan Window", (char*)wname.value) != 0) {
- return 0;
- }
-
- return win;
-}
-
-static int catch_badwin(Display *dpy, XErrorEvent *err)
-{
- return 0;
-}
-
-
-
-#endif /* BUILD_X11 */
-
-
-/* --------------- windows implementation ----------------- */
-#ifdef BUILD_WIN32
-static int reshape_pending;
-
-static void update_modkeys(void);
-static int translate_vkey(int vkey);
-static void handle_mbutton(int bn, int st, WPARAM wparam, LPARAM lparam);
-
-#ifdef MINIGLUT_WINMAIN
-int WINAPI WinMain(HINSTANCE hinst, HINSTANCE hprev, char *cmdline, int showcmd)
-{
- int argc = 1;
- char *argv[] = { "miniglut.exe", 0 };
- return main(argc, argv);
-}
-#endif
-
-void glutMainLoopEvent(void)
-{
- MSG msg;
-
- if(!cb_display) {
- panic("display callback not set");
- }
-
- if(reshape_pending && cb_reshape) {
- reshape_pending = 0;
- get_window_size(&win_width, &win_height);
- cb_reshape(win_width, win_height);
- }
-
- if(!upd_pending && !cb_idle) {
- GetMessage(&msg, 0, 0, 0);
- TranslateMessage(&msg);
- DispatchMessage(&msg);
- if(quit) return;
- }
- while(PeekMessage(&msg, 0, 0, 0, PM_REMOVE)) {
- TranslateMessage(&msg);
- DispatchMessage(&msg);
- if(quit) return;
- }
-
- if(cb_idle) {
- cb_idle();
- }
-
- if(upd_pending && mapped) {
- upd_pending = 0;
- cb_display();
- }
-}
-
-static void cleanup(void)
-{
- if(win) {
- wglMakeCurrent(dc, 0);
- wglDeleteContext(ctx);
- UnregisterClass("MiniGLUT", hinst);
- }
-}
-
-void glutSwapBuffers(void)
-{
- SwapBuffers(dc);
-}
-
-void glutPositionWindow(int x, int y)
-{
- RECT rect;
- unsigned int flags = SWP_SHOWWINDOW;
-
- if(fullscreen) {
- rect.left = prev_win_x;
- rect.top = prev_win_y;
- rect.right = rect.left + prev_win_width;
- rect.bottom = rect.top + prev_win_height;
- SetWindowLong(win, GWL_STYLE, WS_OVERLAPPEDWINDOW);
- fullscreen = 0;
- flags |= SWP_FRAMECHANGED;
- } else {
- GetWindowRect(win, &rect);
- }
- SetWindowPos(win, HWND_NOTOPMOST, x, y, rect.right - rect.left, rect.bottom - rect.top, flags);
-}
-
-void glutReshapeWindow(int xsz, int ysz)
-{
- RECT rect;
- unsigned int flags = SWP_SHOWWINDOW;
-
- if(fullscreen) {
- rect.left = prev_win_x;
- rect.top = prev_win_y;
- SetWindowLong(win, GWL_STYLE, WS_OVERLAPPEDWINDOW);
- fullscreen = 0;
- flags |= SWP_FRAMECHANGED;
- } else {
- GetWindowRect(win, &rect);
- }
- SetWindowPos(win, HWND_NOTOPMOST, rect.left, rect.top, xsz, ysz, flags);
-}
-
-void glutFullScreen(void)
-{
- RECT rect;
- int scr_width, scr_height;
-
- if(fullscreen) return;
-
- GetWindowRect(win, &rect);
- prev_win_x = rect.left;
- prev_win_y = rect.top;
- prev_win_width = rect.right - rect.left;
- prev_win_height = rect.bottom - rect.top;
-
- get_screen_size(&scr_width, &scr_height);
-
- SetWindowLong(win, GWL_STYLE, 0);
- SetWindowPos(win, HWND_TOPMOST, 0, 0, scr_width, scr_height, SWP_SHOWWINDOW);
-
- fullscreen = 1;
-}
-
-void glutSetWindowTitle(const char *title)
-{
- SetWindowText(win, title);
-}
-
-void glutSetIconTitle(const char *title)
-{
-}
-
-void glutSetCursor(int cidx)
-{
- switch(cidx) {
- case GLUT_CURSOR_NONE:
- ShowCursor(0);
- break;
- case GLUT_CURSOR_INHERIT:
- case GLUT_CURSOR_LEFT_ARROW:
- default:
- SetCursor(LoadCursor(0, IDC_ARROW));
- ShowCursor(1);
- }
-}
-
-#define WGL_DRAW_TO_WINDOW 0x2001
-#define WGL_SUPPORT_OPENGL 0x2010
-#define WGL_DOUBLE_BUFFER 0x2011
-#define WGL_STEREO 0x2012
-#define WGL_PIXEL_TYPE 0x2013
-#define WGL_COLOR_BITS 0x2014
-#define WGL_RED_BITS 0x2015
-#define WGL_GREEN_BITS 0x2017
-#define WGL_BLUE_BITS 0x2019
-#define WGL_ALPHA_BITS 0x201b
-#define WGL_ACCUM_BITS 0x201d
-#define WGL_DEPTH_BITS 0x2022
-#define WGL_STENCIL_BITS 0x2023
-
-#define WGL_TYPE_RGBA 0x202b
-#define WGL_TYPE_COLORINDEX 0x202c
-
-#define WGL_FRAMEBUFFER_SRGB_CAPABLE_ARB 0x20a9
-#define WGL_SAMPLE_BUFFERS_ARB 0x2041
-#define WGL_SAMPLES_ARB 0x2042
-
-static PROC wglChoosePixelFormat;
-static PROC wglGetPixelFormatAttribiv;
-
-#define ATTR(a, v) \
- do { *aptr++ = (a); *aptr++ = (v); } while(0)
-
-static unsigned int choose_pixfmt(unsigned int mode)
-{
- unsigned int num_pixfmt, pixfmt = 0;
- int attr[32] = { WGL_DRAW_TO_WINDOW, 1, WGL_SUPPORT_OPENGL, 1 };
-
- int *aptr = attr;
- int *samples = 0;
-
- if(mode & GLUT_DOUBLE) {
- ATTR(WGL_DOUBLE_BUFFER, 1);
- }
-
- ATTR(WGL_PIXEL_TYPE, mode & GLUT_INDEX ? WGL_TYPE_COLORINDEX : WGL_TYPE_RGBA);
- ATTR(WGL_COLOR_BITS, 8);
- if(mode & GLUT_ALPHA) {
- ATTR(WGL_ALPHA_BITS, 4);
- }
- if(mode & GLUT_DEPTH) {
- ATTR(WGL_DEPTH_BITS, 16);
- }
- if(mode & GLUT_STENCIL) {
- ATTR(WGL_STENCIL_BITS, 1);
- }
- if(mode & GLUT_ACCUM) {
- ATTR(WGL_ACCUM_BITS, 1);
- }
- if(mode & GLUT_STEREO) {
- ATTR(WGL_STEREO, 1);
- }
- if(mode & GLUT_SRGB) {
- ATTR(WGL_FRAMEBUFFER_SRGB_CAPABLE_ARB, 1);
- }
- if(mode & GLUT_MULTISAMPLE) {
- ATTR(WGL_SAMPLE_BUFFERS_ARB, 1);
- *aptr++ = WGL_SAMPLES_ARB;
- samples = aptr;
- *aptr++ = 32;
- }
- *aptr++ = 0;
-
- while((!wglChoosePixelFormat(dc, attr, 0, 1, &pixfmt, &num_pixfmt) || !num_pixfmt) && samples && *samples) {
- *samples >>= 1;
- if(!*samples) {
- aptr[-3] = 0;
- }
- }
- return pixfmt;
-}
-
-static PIXELFORMATDESCRIPTOR tmppfd = {
- sizeof tmppfd, 1, PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER,
- PFD_TYPE_RGBA, 32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 24, 8, 0,
- PFD_MAIN_PLANE, 0, 0, 0, 0
-};
-#define TMPCLASS "TempMiniGLUT"
-
-#define GETATTR(attr, vptr) \
- do { \
- int gattr = attr; \
- wglGetPixelFormatAttribiv(dc, pixfmt, 0, 1, &gattr, vptr); \
- } while(0)
-
-static int create_window_wglext(const char *title, int width, int height)
-{
- WNDCLASSEX wc = {0};
- HWND tmpwin = 0;
- HDC tmpdc = 0;
- HGLRC tmpctx = 0;
- int pixfmt;
-
- /* create a temporary window and GL context, just to query and retrieve
- * the wglChoosePixelFormatEXT function
- */
- wc.cbSize = sizeof wc;
- wc.hbrBackground = GetStockObject(BLACK_BRUSH);
- wc.hCursor = LoadCursor(0, IDC_ARROW);
- wc.hIcon = wc.hIconSm = LoadIcon(0, IDI_APPLICATION);
- wc.hInstance = hinst;
- wc.lpfnWndProc = DefWindowProc;
- wc.lpszClassName = TMPCLASS;
- wc.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC;
- if(!RegisterClassEx(&wc)) {
- return 0;
- }
- if(!(tmpwin = CreateWindow(TMPCLASS, "temp", WS_OVERLAPPEDWINDOW, 0, 0,
- width, height, 0, 0, hinst, 0))) {
- goto fail;
- }
- tmpdc = GetDC(tmpwin);
-
- if(!(pixfmt = ChoosePixelFormat(tmpdc, &tmppfd)) ||
- !SetPixelFormat(tmpdc, pixfmt, &tmppfd) ||
- !(tmpctx = wglCreateContext(tmpdc))) {
- goto fail;
- }
- wglMakeCurrent(tmpdc, tmpctx);
-
- if(!(wglChoosePixelFormat = wglGetProcAddress("wglChoosePixelFormatARB"))) {
- if(!(wglChoosePixelFormat = wglGetProcAddress("wglChoosePixelFormatEXT"))) {
- goto fail;
- }
- if(!(wglGetPixelFormatAttribiv = wglGetProcAddress("wglGetPixelFormatAttribivEXT"))) {
- goto fail;
- }
- } else {
- if(!(wglGetPixelFormatAttribiv = wglGetProcAddress("wglGetPixelFormatAttribivARB"))) {
- goto fail;
- }
- }
- wglMakeCurrent(0, 0);
- wglDeleteContext(tmpctx);
- DestroyWindow(tmpwin);
- UnregisterClass(TMPCLASS, hinst);
-
- /* create the real window and context */
- if(!(win = CreateWindow("MiniGLUT", title, WS_OVERLAPPEDWINDOW, init_x,
- init_y, width, height, 0, 0, hinst, 0))) {
- panic("Failed to create window\n");
- }
- dc = GetDC(win);
-
- if(!(pixfmt = choose_pixfmt(init_mode))) {
- panic("Failed to find suitable pixel format\n");
- }
- if(!SetPixelFormat(dc, pixfmt, &tmppfd)) {
- panic("Failed to set the selected pixel format\n");
- }
- if(!(ctx = wglCreateContext(dc))) {
- panic("Failed to create the OpenGL context\n");
- }
- wglMakeCurrent(dc, ctx);
-
- GETATTR(WGL_RED_BITS, &ctx_info.rsize);
- GETATTR(WGL_GREEN_BITS, &ctx_info.gsize);
- GETATTR(WGL_BLUE_BITS, &ctx_info.bsize);
- GETATTR(WGL_ALPHA_BITS, &ctx_info.asize);
- GETATTR(WGL_DEPTH_BITS, &ctx_info.zsize);
- GETATTR(WGL_STENCIL_BITS, &ctx_info.ssize);
- GETATTR(WGL_DOUBLE_BUFFER, &ctx_info.dblbuf);
- GETATTR(WGL_FRAMEBUFFER_SRGB_CAPABLE_ARB, &ctx_info.srgb);
- GETATTR(WGL_SAMPLES_ARB, &ctx_info.samples);
- return 0;
-
-fail:
- if(tmpctx) {
- wglMakeCurrent(0, 0);
- wglDeleteContext(tmpctx);
- }
- if(tmpwin) {
- DestroyWindow(tmpwin);
- }
- UnregisterClass(TMPCLASS, hinst);
- return -1;
-}
-
-
-static void create_window(const char *title)
-{
- int pixfmt;
- PIXELFORMATDESCRIPTOR pfd = {0};
- RECT rect;
- int width, height;
-
- rect.left = init_x;
- rect.top = init_y;
- rect.right = init_x + init_width;
- rect.bottom = init_y + init_height;
- AdjustWindowRect(&rect, WS_OVERLAPPEDWINDOW, 0);
- width = rect.right - rect.left;
- height = rect.bottom - rect.top;
-
- if(create_window_wglext(title, width, height) == -1) {
-
- if(!(win = CreateWindow("MiniGLUT", title, WS_OVERLAPPEDWINDOW,
- rect.left, rect.top, width, height, 0, 0, hinst, 0))) {
- panic("Failed to create window\n");
- }
- dc = GetDC(win);
-
- pfd.nSize = sizeof pfd;
- pfd.nVersion = 1;
- pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
- if(init_mode & GLUT_STEREO) {
- pfd.dwFlags |= PFD_STEREO;
- }
- pfd.iPixelType = init_mode & GLUT_INDEX ? PFD_TYPE_COLORINDEX : PFD_TYPE_RGBA;
- pfd.cColorBits = 24;
- if(init_mode & GLUT_ALPHA) {
- pfd.cAlphaBits = 8;
- }
- if(init_mode & GLUT_ACCUM) {
- pfd.cAccumBits = 24;
- }
- if(init_mode & GLUT_DEPTH) {
- pfd.cDepthBits = 24;
- }
- if(init_mode & GLUT_STENCIL) {
- pfd.cStencilBits = 8;
- }
- pfd.iLayerType = PFD_MAIN_PLANE;
-
- if(!(pixfmt = ChoosePixelFormat(dc, &pfd))) {
- panic("Failed to find suitable pixel format\n");
- }
- if(!SetPixelFormat(dc, pixfmt, &pfd)) {
- panic("Failed to set the selected pixel format\n");
- }
- if(!(ctx = wglCreateContext(dc))) {
- panic("Failed to create the OpenGL context\n");
- }
- wglMakeCurrent(dc, ctx);
-
- DescribePixelFormat(dc, pixfmt, sizeof pfd, &pfd);
- ctx_info.rsize = pfd.cRedBits;
- ctx_info.gsize = pfd.cGreenBits;
- ctx_info.bsize = pfd.cBlueBits;
- ctx_info.asize = pfd.cAlphaBits;
- ctx_info.zsize = pfd.cDepthBits;
- ctx_info.ssize = pfd.cStencilBits;
- ctx_info.dblbuf = pfd.dwFlags & PFD_DOUBLEBUFFER ? 1 : 0;
- ctx_info.samples = 0;
- ctx_info.srgb = 0;
- }
-
- ShowWindow(win, 1);
- SetForegroundWindow(win);
- SetFocus(win);
- upd_pending = 1;
- reshape_pending = 1;
-}
-
-static HRESULT CALLBACK handle_message(HWND win, unsigned int msg, WPARAM wparam, LPARAM lparam)
-{
- static int mouse_x, mouse_y;
- int x, y, key;
-
- switch(msg) {
- case WM_CLOSE:
- if(win) DestroyWindow(win);
- break;
-
- case WM_DESTROY:
- cleanup();
- quit = 1;
- PostQuitMessage(0);
- break;
-
- case WM_PAINT:
- upd_pending = 1;
- ValidateRect(win, 0);
- break;
-
- case WM_SIZE:
- x = lparam & 0xffff;
- y = lparam >> 16;
- if(x != win_width && y != win_height) {
- win_width = x;
- win_height = y;
- if(cb_reshape) {
- reshape_pending = 0;
- cb_reshape(win_width, win_height);
- }
- }
- break;
-
- case WM_SHOWWINDOW:
- mapped = wparam;
- if(cb_vis) cb_vis(mapped ? GLUT_VISIBLE : GLUT_NOT_VISIBLE);
- break;
-
- case WM_KEYDOWN:
- case WM_SYSKEYDOWN:
- update_modkeys();
- key = translate_vkey(wparam);
- if(key < 256) {
- if(cb_keydown) {
- cb_keydown((unsigned char)key, mouse_x, mouse_y);
- }
- } else {
- if(cb_skeydown) {
- cb_skeydown(key, mouse_x, mouse_y);
- }
- }
- break;
-
- case WM_KEYUP:
- case WM_SYSKEYUP:
- update_modkeys();
- key = translate_vkey(wparam);
- if(key < 256) {
- if(cb_keyup) {
- cb_keyup((unsigned char)key, mouse_x, mouse_y);
- }
- } else {
- if(cb_skeyup) {
- cb_skeyup(key, mouse_x, mouse_y);
- }
- }
- break;
-
- case WM_LBUTTONDOWN:
- handle_mbutton(0, 1, wparam, lparam);
- break;
- case WM_MBUTTONDOWN:
- handle_mbutton(1, 1, wparam, lparam);
- break;
- case WM_RBUTTONDOWN:
- handle_mbutton(2, 1, wparam, lparam);
- break;
- case WM_LBUTTONUP:
- handle_mbutton(0, 0, wparam, lparam);
- break;
- case WM_MBUTTONUP:
- handle_mbutton(1, 0, wparam, lparam);
- break;
- case WM_RBUTTONUP:
- handle_mbutton(2, 0, wparam, lparam);
- break;
-
- case WM_MOUSEMOVE:
- if(wparam & (MK_LBUTTON | MK_MBUTTON | MK_RBUTTON)) {
- if(cb_motion) cb_motion(lparam & 0xffff, lparam >> 16);
- } else {
- if(cb_passive) cb_passive(lparam & 0xffff, lparam >> 16);
- }
- break;
-
- case WM_SYSCOMMAND:
- wparam &= 0xfff0;
- if(wparam == SC_KEYMENU || wparam == SC_SCREENSAVE || wparam == SC_MONITORPOWER) {
- return 0;
- }
- default:
- return DefWindowProc(win, msg, wparam, lparam);
- }
-
- return 0;
-}
-
-static void update_modkeys(void)
-{
- if(GetKeyState(VK_SHIFT) & 0x8000) {
- modstate |= GLUT_ACTIVE_SHIFT;
- } else {
- modstate &= ~GLUT_ACTIVE_SHIFT;
- }
- if(GetKeyState(VK_CONTROL) & 0x8000) {
- modstate |= GLUT_ACTIVE_CTRL;
- } else {
- modstate &= ~GLUT_ACTIVE_CTRL;
- }
- if(GetKeyState(VK_MENU) & 0x8000) {
- modstate |= GLUT_ACTIVE_ALT;
- } else {
- modstate &= ~GLUT_ACTIVE_ALT;
- }
-}
-
-static int translate_vkey(int vkey)
-{
- switch(vkey) {
- case VK_PRIOR: return GLUT_KEY_PAGE_UP;
- case VK_NEXT: return GLUT_KEY_PAGE_DOWN;
- case VK_END: return GLUT_KEY_END;
- case VK_HOME: return GLUT_KEY_HOME;
- case VK_LEFT: return GLUT_KEY_LEFT;
- case VK_UP: return GLUT_KEY_UP;
- case VK_RIGHT: return GLUT_KEY_RIGHT;
- case VK_DOWN: return GLUT_KEY_DOWN;
- default:
- break;
- }
-
- if(vkey >= 'A' && vkey <= 'Z') {
- vkey += 32;
- } else if(vkey >= VK_F1 && vkey <= VK_F12) {
- vkey -= VK_F1 + GLUT_KEY_F1;
- }
-
- return vkey;
-}
-
-static void handle_mbutton(int bn, int st, WPARAM wparam, LPARAM lparam)
-{
- int x, y;
-
- update_modkeys();
-
- if(cb_mouse) {
- x = lparam & 0xffff;
- y = lparam >> 16;
- cb_mouse(bn, st ? GLUT_DOWN : GLUT_UP, x, y);
- }
-}
-
-static void get_window_pos(int *x, int *y)
-{
- RECT rect;
- GetWindowRect(win, &rect);
- *x = rect.left;
- *y = rect.top;
-}
-
-static void get_window_size(int *w, int *h)
-{
- RECT rect;
- GetClientRect(win, &rect);
- *w = rect.right - rect.left;
- *h = rect.bottom - rect.top;
-}
-
-static void get_screen_size(int *scrw, int *scrh)
-{
- *scrw = GetSystemMetrics(SM_CXSCREEN);
- *scrh = GetSystemMetrics(SM_CYSCREEN);
-}
-#endif /* BUILD_WIN32 */
-
-#if defined(__unix__) || defined(__APPLE__)
-#include <sys/time.h>
-
-#ifdef MINIGLUT_USE_LIBC
-#define sys_gettimeofday(tv, tz) gettimeofday(tv, tz)
-#else
-static int sys_gettimeofday(struct timeval *tv, struct timezone *tz);
-#endif
-
-static long get_msec(void)
-{
- static struct timeval tv0;
- struct timeval tv;
-
- sys_gettimeofday(&tv, 0);
- if(tv0.tv_sec == 0 && tv0.tv_usec == 0) {
- tv0 = tv;
- return 0;
- }
- return (tv.tv_sec - tv0.tv_sec) * 1000 + (tv.tv_usec - tv0.tv_usec) / 1000;
-}
-#endif /* UNIX */
-#ifdef _WIN32
-static long get_msec(void)
-{
- static long t0;
- long tm;
-
-#ifdef MINIGLUT_NO_WINMM
- tm = GetTickCount();
-#else
- tm = timeGetTime();
-#endif
- if(!t0) {
- t0 = tm;
- return 0;
- }
- return tm - t0;
-}
-#endif
-
-static void panic(const char *msg)
-{
- const char *end = msg;
- while(*end) end++;
- sys_write(2, msg, end - msg);
- sys_exit(1);
-}
-
-
-#ifdef MINIGLUT_USE_LIBC
-#include <stdlib.h>
-#ifdef __unix__
-#include <unistd.h>
-#endif
-
-static void sys_exit(int status)
-{
- exit(status);
-}
-
-static int sys_write(int fd, const void *buf, int count)
-{
- return write(fd, buf, count);
-}
-
-#else /* !MINIGLUT_USE_LIBC */
-
-#ifdef __linux__
-#ifdef __x86_64__
-static void sys_exit(int status)
-{
- asm volatile(
- "syscall\n\t"
- :: "a"(60), "D"(status));
-}
-static int sys_write(int fd, const void *buf, int count)
-{
- long res;
- asm volatile(
- "syscall\n\t"
- : "=a"(res)
- : "a"(1), "D"(fd), "S"(buf), "d"(count));
- return res;
-}
-static int sys_gettimeofday(struct timeval *tv, struct timezone *tz)
-{
- int res;
- asm volatile(
- "syscall\n\t"
- : "=a"(res)
- : "a"(96), "D"(tv), "S"(tz));
- return res;
-}
-#endif /* __x86_64__ */
-#ifdef __i386__
-static void sys_exit(int status)
-{
- asm volatile(
- "int $0x80\n\t"
- :: "a"(1), "b"(status));
-}
-static int sys_write(int fd, const void *buf, int count)
-{
- int res;
- asm volatile(
- "int $0x80\n\t"
- : "=a"(res)
- : "a"(4), "b"(fd), "c"(buf), "d"(count));
- return res;
-}
-static int sys_gettimeofday(struct timeval *tv, struct timezone *tz)
-{
- int res;
- asm volatile(
- "int $0x80\n\t"
- : "=a"(res)
- : "a"(78), "b"(tv), "c"(tz));
- return res;
-}
-#endif /* __i386__ */
-#endif /* __linux__ */
-
-#ifdef _WIN32
-static void sys_exit(int status)
-{
- ExitProcess(status);
-}
-static int sys_write(int fd, const void *buf, int count)
-{
- unsigned long wrsz = 0;
-
- HANDLE out = GetStdHandle(fd == 1 ? STD_OUTPUT_HANDLE : STD_ERROR_HANDLE);
- if(!WriteFile(out, buf, count, &wrsz, 0)) {
- return -1;
- }
- return wrsz;
-}
-#endif /* _WIN32 */
-#endif /* !MINIGLUT_USE_LIBC */
-
-
-/* ----------------- primitives ------------------ */
-#ifdef MINIGLUT_USE_LIBC
-#include <stdlib.h>
-#include <math.h>
-
-void mglut_sincos(float angle, float *sptr, float *cptr)
-{
- *sptr = sin(angle);
- *cptr = cos(angle);
-}
-
-float mglut_atan(float x)
-{
- return atan(x);
-}
-
-#else /* !MINIGLUT_USE_LIBC */
-
-#ifdef __GNUC__
-void mglut_sincos(float angle, float *sptr, float *cptr)
-{
- asm volatile(
- "flds %2\n\t"
- "fsincos\n\t"
- "fstps %1\n\t"
- "fstps %0\n\t"
- : "=m"(*sptr), "=m"(*cptr)
- : "m"(angle)
- );
-}
-
-float mglut_atan(float x)
-{
- float res;
- asm volatile(
- "flds %1\n\t"
- "fld1\n\t"
- "fpatan\n\t"
- "fstps %0\n\t"
- : "=m"(res)
- : "m"(x)
- );
- return res;
-}
-#endif
-
-#ifdef _MSC_VER
-void mglut_sincos(float angle, float *sptr, float *cptr)
-{
- float s, c;
- __asm {
- fld angle
- fsincos
- fstp c
- fstp s
- }
- *sptr = s;
- *cptr = c;
-}
-
-float mglut_atan(float x)
-{
- float res;
- __asm {
- fld x
- fld1
- fpatan
- fstp res
- }
- return res;
-}
-#endif
-
-#ifdef __WATCOMC__
-#pragma aux mglut_sincos = \
- "fsincos" \
- "fstp dword ptr [edx]" \
- "fstp dword ptr [eax]" \
- parm[8087][eax][edx] \
- modify[8087];
-
-#pragma aux mglut_atan = \
- "fld1" \
- "fpatan" \
- parm[8087] \
- value[8087] \
- modify [8087];
-#endif /* __WATCOMC__ */
-
-#endif /* !MINIGLUT_USE_LIBC */
-
-#define PI 3.1415926536f
-
-void glutSolidSphere(float rad, int slices, int stacks)
-{
- int i, j, k, gray;
- float x, y, z, s, t, u, v, phi, theta, sintheta, costheta, sinphi, cosphi;
- float du = 1.0f / (float)slices;
- float dv = 1.0f / (float)stacks;
-
- glBegin(GL_QUADS);
- for(i=0; i<stacks; i++) {
- v = i * dv;
- for(j=0; j<slices; j++) {
- u = j * du;
- for(k=0; k<4; k++) {
- gray = k ^ (k >> 1);
- s = gray & 1 ? u + du : u;
- t = gray & 2 ? v + dv : v;
- theta = s * PI * 2.0f;
- phi = t * PI;
- mglut_sincos(theta, &sintheta, &costheta);
- mglut_sincos(phi, &sinphi, &cosphi);
- x = sintheta * sinphi;
- y = costheta * sinphi;
- z = cosphi;
-
- glColor3f(s, t, 1);
- glTexCoord2f(s, t);
- glNormal3f(x, y, z);
- glVertex3f(x * rad, y * rad, z * rad);
- }
- }
- }
- glEnd();
-}
-
-void glutWireSphere(float rad, int slices, int stacks)
-{
- glPushAttrib(GL_POLYGON_BIT);
- glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
- glutSolidSphere(rad, slices, stacks);
- glPopAttrib();
-}
-
-void glutSolidCube(float sz)
-{
- int i, j, idx, gray, flip, rotx;
- float vpos[3], norm[3];
- float rad = sz * 0.5f;
-
- glBegin(GL_QUADS);
- for(i=0; i<6; i++) {
- flip = i & 1;
- rotx = i >> 2;
- idx = (~i & 2) - rotx;
- norm[0] = norm[1] = norm[2] = 0.0f;
- norm[idx] = flip ^ ((i >> 1) & 1) ? -1 : 1;
- glNormal3fv(norm);
- vpos[idx] = norm[idx] * rad;
- for(j=0; j<4; j++) {
- gray = j ^ (j >> 1);
- vpos[i & 2] = (gray ^ flip) & 1 ? rad : -rad;
- vpos[rotx + 1] = (gray ^ (rotx << 1)) & 2 ? rad : -rad;
- glTexCoord2f(gray & 1, gray >> 1);
- glVertex3fv(vpos);
- }
- }
- glEnd();
-}
-
-void glutWireCube(float sz)
-{
- glPushAttrib(GL_POLYGON_BIT);
- glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
- glutSolidCube(sz);
- glPopAttrib();
-}
-
-static void draw_cylinder(float rbot, float rtop, float height, int slices, int stacks)
-{
- int i, j, k, gray;
- float x, y, z, s, t, u, v, theta, phi, sintheta, costheta, sinphi, cosphi, rad;
- float du = 1.0f / (float)slices;
- float dv = 1.0f / (float)stacks;
-
- rad = rbot - rtop;
- phi = mglut_atan((rad < 0 ? -rad : rad) / height);
- mglut_sincos(phi, &sinphi, &cosphi);
-
- glBegin(GL_QUADS);
- for(i=0; i<stacks; i++) {
- v = i * dv;
- for(j=0; j<slices; j++) {
- u = j * du;
- for(k=0; k<4; k++) {
- gray = k ^ (k >> 1);
- s = gray & 2 ? u + du : u;
- t = gray & 1 ? v + dv : v;
- rad = rbot + (rtop - rbot) * t;
- theta = s * PI * 2.0f;
- mglut_sincos(theta, &sintheta, &costheta);
-
- x = sintheta * cosphi;
- y = costheta * cosphi;
- z = sinphi;
-
- glColor3f(s, t, 1);
- glTexCoord2f(s, t);
- glNormal3f(x, y, z);
- glVertex3f(sintheta * rad, costheta * rad, t * height);
- }
- }
- }
- glEnd();
-}
-
-void glutSolidCone(float base, float height, int slices, int stacks)
-{
- draw_cylinder(base, 0, height, slices, stacks);
-}
-
-void glutWireCone(float base, float height, int slices, int stacks)
-{
- glPushAttrib(GL_POLYGON_BIT);
- glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
- glutSolidCone(base, height, slices, stacks);
- glPopAttrib();
-}
-
-void glutSolidCylinder(float rad, float height, int slices, int stacks)
-{
- draw_cylinder(rad, rad, height, slices, stacks);
-}
-
-void glutWireCylinder(float rad, float height, int slices, int stacks)
-{
- glPushAttrib(GL_POLYGON_BIT);
- glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
- glutSolidCylinder(rad, height, slices, stacks);
- glPopAttrib();
-}
-
-void glutSolidTorus(float inner_rad, float outer_rad, int sides, int rings)
-{
- int i, j, k, gray;
- float x, y, z, s, t, u, v, phi, theta, sintheta, costheta, sinphi, cosphi;
- float du = 1.0f / (float)rings;
- float dv = 1.0f / (float)sides;
-
- glBegin(GL_QUADS);
- for(i=0; i<rings; i++) {
- u = i * du;
- for(j=0; j<sides; j++) {
- v = j * dv;
- for(k=0; k<4; k++) {
- gray = k ^ (k >> 1);
- s = gray & 1 ? u + du : u;
- t = gray & 2 ? v + dv : v;
- theta = s * PI * 2.0f;
- phi = t * PI * 2.0f;
- mglut_sincos(theta, &sintheta, &costheta);
- mglut_sincos(phi, &sinphi, &cosphi);
- x = sintheta * sinphi;
- y = costheta * sinphi;
- z = cosphi;
-
- glColor3f(s, t, 1);
- glTexCoord2f(s, t);
- glNormal3f(x, y, z);
-
- x = x * inner_rad + sintheta * outer_rad;
- y = y * inner_rad + costheta * outer_rad;
- z *= inner_rad;
- glVertex3f(x, y, z);
- }
- }
- }
- glEnd();
-}
-
-void glutWireTorus(float inner_rad, float outer_rad, int sides, int rings)
-{
- glPushAttrib(GL_POLYGON_BIT);
- glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
- glutSolidTorus(inner_rad, outer_rad, sides, rings);
- glPopAttrib();
-}
-
-#define NUM_TEAPOT_INDICES (sizeof teapot_index / sizeof *teapot_index)
-#define NUM_TEAPOT_VERTS (sizeof teapot_verts / sizeof *teapot_verts)
-
-#define NUM_TEAPOT_PATCHES (NUM_TEAPOT_INDICES / 16)
-
-#define PATCH_SUBDIV 7
-
-static float teapot_part_flip[] = {
- 1, 1, 1, 1, /* rim flip */
- 1, 1, 1, 1, /* body1 flip */
- 1, 1, 1, 1, /* body2 flip */
- 1, 1, 1, 1, /* lid patch 1 flip */
- 1, 1, 1, 1, /* lid patch 2 flip */
- 1, -1, /* handle 1 flip */
- 1, -1, /* handle 2 flip */
- 1, -1, /* spout 1 flip */
- 1, -1, /* spout 2 flip */
- 1, 1, 1, 1 /* bottom flip */
-};
-
-static float teapot_part_rot[] = {
- 0, 90, 180, 270, /* rim rotations */
- 0, 90, 180, 270, /* body patch 1 rotations */
- 0, 90, 180, 270, /* body patch 2 rotations */
- 0, 90, 180, 270, /* lid patch 1 rotations */
- 0, 90, 180, 270, /* lid patch 2 rotations */
- 0, 0, /* handle 1 rotations */
- 0, 0, /* handle 2 rotations */
- 0, 0, /* spout 1 rotations */
- 0, 0, /* spout 2 rotations */
- 0, 90, 180, 270 /* bottom rotations */
-};
-
-
-static int teapot_index[] = {
- /* rim */
- 102, 103, 104, 105, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
- 102, 103, 104, 105, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
- 102, 103, 104, 105, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
- 102, 103, 104, 105, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
- /* body1 */
- 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27,
- 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27,
- 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27,
- 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27,
- /* body 2 */
- 24, 25, 26, 27, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
- 24, 25, 26, 27, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
- 24, 25, 26, 27, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
- 24, 25, 26, 27, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
- /* lid 1 */
- 96, 96, 96, 96, 97, 98, 99, 100, 101, 101, 101, 101, 0, 1, 2, 3,
- 96, 96, 96, 96, 97, 98, 99, 100, 101, 101, 101, 101, 0, 1, 2, 3,
- 96, 96, 96, 96, 97, 98, 99, 100, 101, 101, 101, 101, 0, 1, 2, 3,
- 96, 96, 96, 96, 97, 98, 99, 100, 101, 101, 101, 101, 0, 1, 2, 3,
- /* lid 2 */
- 0, 1, 2, 3, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117,
- 0, 1, 2, 3, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117,
- 0, 1, 2, 3, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117,
- 0, 1, 2, 3, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117,
- /* handle 1 */
- 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56,
- 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56,
- /* handle 2 */
- 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 28, 65, 66, 67,
- 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 28, 65, 66, 67,
- /* spout 1 */
- 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83,
- 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83,
- /* spout 2 */
- 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95,
- 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95,
- /* bottom */
- 118, 118, 118, 118, 124, 122, 119, 121, 123, 126, 125, 120, 40, 39, 38, 37,
- 118, 118, 118, 118, 124, 122, 119, 121, 123, 126, 125, 120, 40, 39, 38, 37,
- 118, 118, 118, 118, 124, 122, 119, 121, 123, 126, 125, 120, 40, 39, 38, 37,
- 118, 118, 118, 118, 124, 122, 119, 121, 123, 126, 125, 120, 40, 39, 38, 37
-};
-
-
-static float teapot_verts[][3] = {
- { 0.2000, 0.0000, 2.70000 }, { 0.2000, -0.1120, 2.70000 },
- { 0.1120, -0.2000, 2.70000 }, { 0.0000, -0.2000, 2.70000 },
- { 1.3375, 0.0000, 2.53125 }, { 1.3375, -0.7490, 2.53125 },
- { 0.7490, -1.3375, 2.53125 }, { 0.0000, -1.3375, 2.53125 },
- { 1.4375, 0.0000, 2.53125 }, { 1.4375, -0.8050, 2.53125 },
- { 0.8050, -1.4375, 2.53125 }, { 0.0000, -1.4375, 2.53125 },
- { 1.5000, 0.0000, 2.40000 }, { 1.5000, -0.8400, 2.40000 },
- { 0.8400, -1.5000, 2.40000 }, { 0.0000, -1.5000, 2.40000 },
- { 1.7500, 0.0000, 1.87500 }, { 1.7500, -0.9800, 1.87500 },
- { 0.9800, -1.7500, 1.87500 }, { 0.0000, -1.7500, 1.87500 },
- { 2.0000, 0.0000, 1.35000 }, { 2.0000, -1.1200, 1.35000 },
- { 1.1200, -2.0000, 1.35000 }, { 0.0000, -2.0000, 1.35000 },
- { 2.0000, 0.0000, 0.90000 }, { 2.0000, -1.1200, 0.90000 },
- { 1.1200, -2.0000, 0.90000 }, { 0.0000, -2.0000, 0.90000 },
- { -2.0000, 0.0000, 0.90000 }, { 2.0000, 0.0000, 0.45000 },
- { 2.0000, -1.1200, 0.45000 }, { 1.1200, -2.0000, 0.45000 },
- { 0.0000, -2.0000, 0.45000 }, { 1.5000, 0.0000, 0.22500 },
- { 1.5000, -0.8400, 0.22500 }, { 0.8400, -1.5000, 0.22500 },
- { 0.0000, -1.5000, 0.22500 }, { 1.5000, 0.0000, 0.15000 },
- { 1.5000, -0.8400, 0.15000 }, { 0.8400, -1.5000, 0.15000 },
- { 0.0000, -1.5000, 0.15000 }, { -1.6000, 0.0000, 2.02500 },
- { -1.6000, -0.3000, 2.02500 }, { -1.5000, -0.3000, 2.25000 },
- { -1.5000, 0.0000, 2.25000 }, { -2.3000, 0.0000, 2.02500 },
- { -2.3000, -0.3000, 2.02500 }, { -2.5000, -0.3000, 2.25000 },
- { -2.5000, 0.0000, 2.25000 }, { -2.7000, 0.0000, 2.02500 },
- { -2.7000, -0.3000, 2.02500 }, { -3.0000, -0.3000, 2.25000 },
- { -3.0000, 0.0000, 2.25000 }, { -2.7000, 0.0000, 1.80000 },
- { -2.7000, -0.3000, 1.80000 }, { -3.0000, -0.3000, 1.80000 },
- { -3.0000, 0.0000, 1.80000 }, { -2.7000, 0.0000, 1.57500 },
- { -2.7000, -0.3000, 1.57500 }, { -3.0000, -0.3000, 1.35000 },
- { -3.0000, 0.0000, 1.35000 }, { -2.5000, 0.0000, 1.12500 },
- { -2.5000, -0.3000, 1.12500 }, { -2.6500, -0.3000, 0.93750 },
- { -2.6500, 0.0000, 0.93750 }, { -2.0000, -0.3000, 0.90000 },
- { -1.9000, -0.3000, 0.60000 }, { -1.9000, 0.0000, 0.60000 },
- { 1.7000, 0.0000, 1.42500 }, { 1.7000, -0.6600, 1.42500 },
- { 1.7000, -0.6600, 0.60000 }, { 1.7000, 0.0000, 0.60000 },
- { 2.6000, 0.0000, 1.42500 }, { 2.6000, -0.6600, 1.42500 },
- { 3.1000, -0.6600, 0.82500 }, { 3.1000, 0.0000, 0.82500 },
- { 2.3000, 0.0000, 2.10000 }, { 2.3000, -0.2500, 2.10000 },
- { 2.4000, -0.2500, 2.02500 }, { 2.4000, 0.0000, 2.02500 },
- { 2.7000, 0.0000, 2.40000 }, { 2.7000, -0.2500, 2.40000 },
- { 3.3000, -0.2500, 2.40000 }, { 3.3000, 0.0000, 2.40000 },
- { 2.8000, 0.0000, 2.47500 }, { 2.8000, -0.2500, 2.47500 },
- { 3.5250, -0.2500, 2.49375 }, { 3.5250, 0.0000, 2.49375 },
- { 2.9000, 0.0000, 2.47500 }, { 2.9000, -0.1500, 2.47500 },
- { 3.4500, -0.1500, 2.51250 }, { 3.4500, 0.0000, 2.51250 },
- { 2.8000, 0.0000, 2.40000 }, { 2.8000, -0.1500, 2.40000 },
- { 3.2000, -0.1500, 2.40000 }, { 3.2000, 0.0000, 2.40000 },
- { 0.0000, 0.0000, 3.15000 }, { 0.8000, 0.0000, 3.15000 },
- { 0.8000, -0.4500, 3.15000 }, { 0.4500, -0.8000, 3.15000 },
- { 0.0000, -0.8000, 3.15000 }, { 0.0000, 0.0000, 2.85000 },
- { 1.4000, 0.0000, 2.40000 }, { 1.4000, -0.7840, 2.40000 },
- { 0.7840, -1.4000, 2.40000 }, { 0.0000, -1.4000, 2.40000 },
- { 0.4000, 0.0000, 2.55000 }, { 0.4000, -0.2240, 2.55000 },
- { 0.2240, -0.4000, 2.55000 }, { 0.0000, -0.4000, 2.55000 },
- { 1.3000, 0.0000, 2.55000 }, { 1.3000, -0.7280, 2.55000 },
- { 0.7280, -1.3000, 2.55000 }, { 0.0000, -1.3000, 2.55000 },
- { 1.3000, 0.0000, 2.40000 }, { 1.3000, -0.7280, 2.40000 },
- { 0.7280, -1.3000, 2.40000 }, { 0.0000, -1.3000, 2.40000 },
- { 0.0000, 0.0000, 0.00000 }, { 1.4250, -0.7980, 0.00000 },
- { 1.5000, 0.0000, 0.07500 }, { 1.4250, 0.0000, 0.00000 },
- { 0.7980, -1.4250, 0.00000 }, { 0.0000, -1.5000, 0.07500 },
- { 0.0000, -1.4250, 0.00000 }, { 1.5000, -0.8400, 0.07500 },
- { 0.8400, -1.5000, 0.07500 }
-};
-
-static void draw_patch(int *index, int flip, float scale);
-static float bernstein(int i, float x);
-
-void glutSolidTeapot(float size)
-{
- int i;
-
- size /= 2.0;
-
- for(i=0; i<NUM_TEAPOT_PATCHES; i++) {
- float flip = teapot_part_flip[i];
- float rot = teapot_part_rot[i];
-
- glMatrixMode(GL_MODELVIEW);
- glPushMatrix();
- glTranslatef(0, -3.15 * size * 0.5, 0);
- glRotatef(rot, 0, 1, 0);
- glScalef(1, 1, flip);
- glRotatef(-90, 1, 0, 0);
-
- draw_patch(teapot_index + i * 16, flip < 0.0 ? 1 : 0, size);
-
- glPopMatrix();
- }
-}
-
-void glutWireTeapot(float size)
-{
- glPushAttrib(GL_POLYGON_BIT);
- glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
- glutSolidTeapot(size);
- glPopAttrib();
-}
-
-
-static void bezier_patch(float *res, float *cp, float u, float v)
-{
- int i, j;
-
- res[0] = res[1] = res[2] = 0.0f;
-
- for(j=0; j<4; j++) {
- for(i=0; i<4; i++) {
- float bu = bernstein(i, u);
- float bv = bernstein(j, v);
-
- res[0] += cp[0] * bu * bv;
- res[1] += cp[1] * bu * bv;
- res[2] += cp[2] * bu * bv;
-
- cp += 3;
- }
- }
-}
-
-static float rsqrt(float x)
-{
- float xhalf = x * 0.5f;
- int i = *(int*)&x;
- i = 0x5f3759df - (i >> 1);
- x = *(float*)&i;
- x = x * (1.5f - xhalf * x * x);
- return x;
-}
-
-
-#define CROSS(res, a, b) \
- do { \
- (res)[0] = (a)[1] * (b)[2] - (a)[2] * (b)[1]; \
- (res)[1] = (a)[2] * (b)[0] - (a)[0] * (b)[2]; \
- (res)[2] = (a)[0] * (b)[1] - (a)[1] * (b)[0]; \
- } while(0)
-
-#define NORMALIZE(v) \
- do { \
- float s = rsqrt((v)[0] * (v)[0] + (v)[1] * (v)[1] + (v)[2] * (v)[2]); \
- (v)[0] *= s; \
- (v)[1] *= s; \
- (v)[2] *= s; \
- } while(0)
-
-#define DT 0.001
-
-static void bezier_patch_norm(float *res, float *cp, float u, float v)
-{
- float tang[3], bitan[3], tmp[3];
-
- bezier_patch(tang, cp, u + DT, v);
- bezier_patch(tmp, cp, u - DT, v);
- tang[0] -= tmp[0];
- tang[1] -= tmp[1];
- tang[2] -= tmp[2];
-
- bezier_patch(bitan, cp, u, v + DT);
- bezier_patch(tmp, cp, u, v - DT);
- bitan[0] -= tmp[0];
- bitan[1] -= tmp[1];
- bitan[2] -= tmp[2];
-
- CROSS(res, tang, bitan);
- NORMALIZE(res);
-}
-
-
-
-static float bernstein(int i, float x)
-{
- float invx = 1.0f - x;
-
- switch(i) {
- case 0:
- return invx * invx * invx;
- case 1:
- return 3.0f * x * invx * invx;
- case 2:
- return 3.0f * x * x * invx;
- case 3:
- return x * x * x;
- default:
- break;
- }
- return 0.0f;
-}
-
-static void draw_patch(int *index, int flip, float scale)
-{
- static const float uoffs[2][4] = {{0, 0, 1, 1}, {1, 1, 0, 0}};
- static const float voffs[4] = {0, 1, 1, 0};
-
- int i, j, k;
- float cp[16 * 3];
- float pt[3], n[3];
- float u, v;
- float du = 1.0 / PATCH_SUBDIV;
- float dv = 1.0 / PATCH_SUBDIV;
-
- /* collect control points */
- for(i=0; i<16; i++) {
- cp[i * 3] = teapot_verts[index[i]][0];
- cp[i * 3 + 1] = teapot_verts[index[i]][1];
- cp[i * 3 + 2] = teapot_verts[index[i]][2];
- }
-
- glBegin(GL_QUADS);
- glColor3f(1, 1, 1);
-
- u = 0;
- for(i=0; i<PATCH_SUBDIV; i++) {
- v = 0;
- for(j=0; j<PATCH_SUBDIV; j++) {
-
- for(k=0; k<4; k++) {
- bezier_patch(pt, cp, u + uoffs[flip][k] * du, v + voffs[k] * dv);
-
- /* top/bottom normal hack */
- if(pt[2] > 3.14) {
- n[0] = n[1] = 0.0f;
- n[2] = 1.0f;
- } else if(pt[2] < 0.00001) {
- n[0] = n[1] = 0.0f;
- n[2] = -1.0f;
- } else {
- bezier_patch_norm(n, cp, u + uoffs[flip][k] * du, v + voffs[k] * dv);
- }
-
- glTexCoord2f(u, v);
- glNormal3fv(n);
- glVertex3f(pt[0] * scale, pt[1] * scale, pt[2] * scale);
- }
-
- v += dv;
- }
- u += du;
- }
-
- glEnd();
-}
projects / erebus2020 / commitdiff