diff options
Diffstat (limited to 'hacks/glx/bouncingcow.c')
| -rw-r--r-- | hacks/glx/bouncingcow.c | 648 |
1 files changed, 0 insertions, 648 deletions
diff --git a/hacks/glx/bouncingcow.c b/hacks/glx/bouncingcow.c deleted file mode 100644 index 29baa46..0000000 --- a/hacks/glx/bouncingcow.c +++ /dev/null @@ -1,648 +0,0 @@ -/* bouncingcow, Copyright (c) 2003-2019 Jamie Zawinski <jwz@jwz.org> - * - * Permission to use, copy, modify, distribute, and sell this software and its - * documentation for any purpose is hereby granted without fee, provided that - * the above copyright notice appear in all copies and that both that - * copyright notice and this permission notice appear in supporting - * documentation. No representations are made about the suitability of this - * software for any purpose. It is provided "as is" without express or - * implied warranty. - * - * Boing, boing, boing. Cow, cow, cow. - */ - -#define DEFAULTS "*delay: 30000 \n" \ - "*count: 1 \n" \ - "*showFPS: False \n" \ - "*wireframe: False \n" \ - -# define release_cow 0 -#define DEF_SPEED "1.0" -#define DEF_TEXTURE "(none)" -#define DEF_MATHEMATICAL "False" - -#undef BELLRAND -#define BELLRAND(n) ((frand((n)) + frand((n)) + frand((n))) / 3) -#undef RANDSIGN -#define RANDSIGN() ((random() & 1) ? 1 : -1) - -#include "xlockmore.h" -#include "rotator.h" -#include "gltrackball.h" -#include "ximage-loader.h" -#include <ctype.h> - -#ifdef USE_GL /* whole file */ - -#include "gllist.h" - -extern struct gllist - *cow_face, *cow_hide, *cow_hoofs, *cow_horns, *cow_tail, *cow_udder; - -static struct gllist **all_objs[] = { - &cow_face, &cow_hide, &cow_hoofs, &cow_horns, &cow_tail, &cow_udder -}; - -#define FACE 0 -#define HIDE 1 -#define HOOFS 2 -#define HORNS 3 -#define TAIL 4 -#define UDDER 5 - -typedef struct { - GLfloat x, y, z; - GLfloat ix, iy, iz; - GLfloat dx, dy, dz; - GLfloat ddx, ddy, ddz; - rotator *rot; - Bool spinner_p; -} floater; - -typedef struct { - GLXContext *glx_context; - trackball_state *trackball; - Bool button_down_p; - - GLuint *dlists; - GLuint texture; - enum { BOUNCE, INFLATE, DEFLATE } mode; - GLfloat ratio; - - int nfloaters; - floater *floaters; - -} cow_configuration; - -static cow_configuration *bps = NULL; - -static GLfloat speed; -static const char *do_texture; -static Bool mathematical; - -static XrmOptionDescRec opts[] = { - { "-speed", ".speed", XrmoptionSepArg, 0 }, - {"-texture", ".texture", XrmoptionSepArg, 0 }, - {"+texture", ".texture", XrmoptionNoArg, "(none)" }, - {"-mathematical", ".mathematical", XrmoptionNoArg, "True" }, - {"+mathematical", ".mathematical", XrmoptionNoArg, "False" }, -}; - -static argtype vars[] = { - {&speed, "speed", "Speed", DEF_SPEED, t_Float}, - {&do_texture, "texture", "Texture", DEF_TEXTURE, t_String}, - {&mathematical,"mathematical","Mathematical",DEF_MATHEMATICAL,t_Bool}, -}; - -ENTRYPOINT ModeSpecOpt cow_opts = {countof(opts), opts, countof(vars), vars, NULL}; - - -#define BOTTOM 28.0 - -static void -reset_floater (ModeInfo *mi, floater *f) -{ - cow_configuration *bp = &bps[MI_SCREEN(mi)]; - - f->y = -BOTTOM; - f->x = f->ix; - f->z = f->iz; - - /* Yes, I know I'm varying the force of gravity instead of varying the - launch velocity. That's intentional: empirical studies indicate - that it's way, way funnier that way. */ - - f->dy = 5.0; - f->dx = 0; - f->dz = 0; - - /* -0.18 max -0.3 top -0.4 middle -0.6 bottom */ - f->ddy = speed * (-0.6 + BELLRAND(0.45)); - f->ddx = 0; - f->ddz = 0; - - f->spinner_p = !(random() % (12 * bp->nfloaters)); - - if (! (random() % (30 * bp->nfloaters))) - { - f->dx = BELLRAND(1.8) * RANDSIGN(); - f->dz = BELLRAND(1.8) * RANDSIGN(); - } -} - - -static void -tick_floater (ModeInfo *mi, floater *f) -{ - cow_configuration *bp = &bps[MI_SCREEN(mi)]; - - if (bp->button_down_p) return; - - f->dx += f->ddx; - f->dy += f->ddy; - f->dz += f->ddz; - - f->x += f->dx * speed; - f->y += f->dy * speed; - f->z += f->dz * speed; - - if (f->y < -BOTTOM || - f->x < -BOTTOM*8 || f->x > BOTTOM*8 || - f->z < -BOTTOM*8 || f->z > BOTTOM*8) - reset_floater (mi, f); -} - - -/* Window management, etc - */ -ENTRYPOINT void -reshape_cow (ModeInfo *mi, int width, int height) -{ - GLfloat h = (GLfloat) height / (GLfloat) width; - int y = 0; - - if (width > height * 5) { /* tiny window: show middle */ - height = width * 9/16; - y = -height/2; - h = height / (GLfloat) width; - } - - glViewport (0, y, (GLint) width, (GLint) height); - - glMatrixMode(GL_PROJECTION); - glLoadIdentity(); - gluPerspective (30.0, 1/h, 1.0, 100); - - glMatrixMode(GL_MODELVIEW); - glLoadIdentity(); - gluLookAt( 0.0, 0.0, 30.0, - 0.0, 0.0, 0.0, - 0.0, 1.0, 0.0); - - glClear(GL_COLOR_BUFFER_BIT); -} - - -ENTRYPOINT Bool -cow_handle_event (ModeInfo *mi, XEvent *event) -{ - cow_configuration *bp = &bps[MI_SCREEN(mi)]; - - if (gltrackball_event_handler (event, bp->trackball, - MI_WIDTH (mi), MI_HEIGHT (mi), - &bp->button_down_p)) - return True; - - return False; -} - - -/* Textures - */ - -static void -load_texture (ModeInfo *mi, const char *filename) -{ - cow_configuration *bp = &bps[MI_SCREEN(mi)]; - Display *dpy = mi->dpy; - Visual *visual = mi->xgwa.visual; - char buf[1024]; - XImage *image; - - bp->texture = 0; - if (MI_IS_WIREFRAME(mi)) - return; - - if (!filename || - !*filename || - !strcasecmp (filename, "(none)")) - { - glDisable (GL_TEXTURE_2D); - return; - } - - image = file_to_ximage (dpy, visual, filename); - if (!image) return; - - clear_gl_error(); - glGenTextures (1, &bp->texture); - glBindTexture (GL_TEXTURE_2D, bp->texture); - glTexImage2D (GL_TEXTURE_2D, 0, GL_RGBA, - image->width, image->height, 0, - GL_RGBA, GL_UNSIGNED_BYTE, image->data); - sprintf (buf, "texture: %.100s (%dx%d)", - filename, image->width, image->height); - check_gl_error(buf); - - glPixelStorei (GL_UNPACK_ALIGNMENT, 4); - glPixelStorei (GL_UNPACK_ROW_LENGTH, image->width); -} - - -static void -render_cow (ModeInfo *mi, GLfloat ratio) -{ - cow_configuration *bp = &bps[MI_SCREEN(mi)]; - int wire = MI_IS_WIREFRAME(mi); - int i; - if (! bp->dlists) - bp->dlists = (GLuint *) calloc (countof(all_objs)+1, sizeof(GLuint)); - for (i = 0; i < countof(all_objs); i++) - { - if (bp->dlists[i]) - glDeleteLists (bp->dlists[i], 1); - bp->dlists[i] = glGenLists (1); - } - - for (i = 0; i < countof(all_objs); i++) - { - GLfloat black[4] = {0, 0, 0, 1}; - const struct gllist *gll = *all_objs[i]; - - glNewList (bp->dlists[i], GL_COMPILE); - - glDisable (GL_TEXTURE_2D); - - if (i == HIDE) - { - GLfloat color[4] = {0.63, 0.43, 0.36, 1.00}; - if (bp->texture) - { - /* if we have a texture, make the base color be white. */ - color[0] = color[1] = color[2] = 1.0; - - glTexGeni (GL_S, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR); - glTexGeni (GL_T, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR); - glTexEnvf (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); - glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_WRAP_S,GL_CLAMP_TO_EDGE); - glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_WRAP_T,GL_CLAMP_TO_EDGE); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); - glEnable(GL_TEXTURE_GEN_S); - glEnable(GL_TEXTURE_GEN_T); - glEnable(GL_TEXTURE_2D); - - /* approximately line it up with ../images/earth.png */ - glMatrixMode (GL_TEXTURE); - glLoadIdentity(); - glTranslatef (0.45, 0.58, 0); - glScalef (0.08, 0.16, 1); - glRotatef (-5, 0, 0, 1); - glMatrixMode (GL_MODELVIEW); - } - glMaterialfv (GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, color); - glMaterialfv (GL_FRONT_AND_BACK, GL_SPECULAR, black); - glMaterialf (GL_FRONT_AND_BACK, GL_SHININESS, 128); - } - else if (i == TAIL) - { - GLfloat color[4] = {0.63, 0.43, 0.36, 1.00}; - glMaterialfv (GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, color); - glMaterialfv (GL_FRONT_AND_BACK, GL_SPECULAR, black); - glMaterialf (GL_FRONT_AND_BACK, GL_SHININESS, 128); - } - else if (i == UDDER) - { - GLfloat color[4] = {1.00, 0.53, 0.53, 1.00}; - glMaterialfv (GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, color); - glMaterialfv (GL_FRONT_AND_BACK, GL_SPECULAR, black); - glMaterialf (GL_FRONT_AND_BACK, GL_SHININESS, 128); - } - else if (i == HOOFS || i == HORNS) - { - GLfloat color[4] = {0.20, 0.20, 0.20, 1.00}; - GLfloat spec[4] = {0.30, 0.30, 0.30, 1.00}; - GLfloat shiny = 8.0; - glMaterialfv (GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, color); - glMaterialfv (GL_FRONT_AND_BACK, GL_SPECULAR, spec); - glMaterialf (GL_FRONT_AND_BACK, GL_SHININESS, shiny); - } - else if (i == FACE) - { - GLfloat color[4] = {0.10, 0.10, 0.10, 1.00}; - GLfloat spec[4] = {0.10, 0.10, 0.10, 1.00}; - GLfloat shiny = 8.0; - glMaterialfv (GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, color); - glMaterialfv (GL_FRONT_AND_BACK, GL_SPECULAR, spec); - glMaterialf (GL_FRONT_AND_BACK, GL_SHININESS, shiny); - } - else - { - GLfloat color[4] = {1.00, 1.00, 1.00, 1.00}; - GLfloat spec[4] = {1.00, 1.00, 1.00, 1.00}; - GLfloat shiny = 128.0; - glMaterialfv (GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, color); - glMaterialfv (GL_FRONT_AND_BACK, GL_SPECULAR, spec); - glMaterialf (GL_FRONT_AND_BACK, GL_SHININESS, shiny); - } - - if (ratio == 0) - renderList (gll, wire); - else - { - /* Transition between a physics cow (cow-shaped) and a - mathematical cow (spherical). - */ - struct gllist *gll2 = (struct gllist *) malloc (sizeof(*gll2)); - GLfloat *p = (GLfloat *) malloc (gll->points * 6 * sizeof(*p)); - GLfloat scale2 = 0.5 + (0.5 * (1-ratio)); - const GLfloat *pin = (GLfloat *) gll->data; - GLfloat *pout = p; - int j; - GLfloat scale = 10.46; - - memcpy (gll2, gll, sizeof(*gll2)); - gll2->next = 0; - gll2->data = p; - - for (j = 0; j < gll2->points; j++) - { - const GLfloat *ppi; - GLfloat *ppo, d; - int k; - switch (gll2->format) { - case GL_N3F_V3F: - - /* Verts transition from cow-shaped to the surface of - the enclosing sphere. */ - ppi = &pin[3]; - ppo = &pout[3]; - d = sqrt (ppi[0]*ppi[0] + ppi[1]*ppi[1] + ppi[2]*ppi[2]); - for (k = 0; k < 3; k++) - { - GLfloat min = ppi[k]; - GLfloat max = ppi[k] / d * scale; - ppo[k] = (min + ratio * (max - min)) * scale2; - } - - /* Normals are the ratio between original normals and - the radial coordinates. */ - ppi = &pin[0]; - ppo = &pout[0]; - for (k = 0; k < 3; k++) - { - GLfloat min = ppi[k]; - GLfloat max = ppi[k] / d; - ppo[k] = (min + ratio * (max - min)); - } - - pin += 6; - pout += 6; - break; - default: abort(); break; /* write me */ - } - } - - renderList (gll2, wire); - free (gll2); - free (p); - } - - glEndList (); - } -} - - -ENTRYPOINT void -init_cow (ModeInfo *mi) -{ - cow_configuration *bp; - int wire = MI_IS_WIREFRAME(mi); - int i; - - MI_INIT (mi, bps); - - bp = &bps[MI_SCREEN(mi)]; - - bp->glx_context = init_GL(mi); - - reshape_cow (mi, MI_WIDTH(mi), MI_HEIGHT(mi)); - - glShadeModel(GL_SMOOTH); - - glEnable(GL_DEPTH_TEST); - glEnable(GL_NORMALIZE); - glEnable(GL_CULL_FACE); - - if (!wire) - { - GLfloat pos[4] = {0.4, 0.2, 0.4, 0.0}; -/* GLfloat amb[4] = {0.0, 0.0, 0.0, 1.0};*/ - GLfloat amb[4] = {0.2, 0.2, 0.2, 1.0}; - GLfloat dif[4] = {1.0, 1.0, 1.0, 1.0}; - GLfloat spc[4] = {1.0, 1.0, 1.0, 1.0}; - - glEnable(GL_LIGHTING); - glEnable(GL_LIGHT0); - glEnable(GL_DEPTH_TEST); - glEnable(GL_CULL_FACE); - - glLightfv(GL_LIGHT0, GL_POSITION, pos); - glLightfv(GL_LIGHT0, GL_AMBIENT, amb); - glLightfv(GL_LIGHT0, GL_DIFFUSE, dif); - glLightfv(GL_LIGHT0, GL_SPECULAR, spc); - } - - bp->trackball = gltrackball_init (False); - - load_texture (mi, do_texture); - - bp->ratio = 0; - render_cow (mi, bp->ratio); - - bp->mode = BOUNCE; - bp->nfloaters = MI_COUNT (mi); - bp->floaters = (floater *) calloc (bp->nfloaters, sizeof (floater)); - - for (i = 0; i < bp->nfloaters; i++) - { - floater *f = &bp->floaters[i]; - f->rot = make_rotator (10.0, 0, 0, - 4, 0.05 * speed, - True); - if (bp->nfloaters == 2) - { - f->x = (i ? 6 : -6); - } - else if (i != 0) - { - double th = (i - 1) * M_PI*2 / (bp->nfloaters-1); - double r = 10; - f->x = r * cos(th); - f->z = r * sin(th); - } - - f->ix = f->x; - f->iy = f->y; - f->iz = f->z; - reset_floater (mi, f); - } -} - - -static void -draw_floater (ModeInfo *mi, floater *f) -{ - cow_configuration *bp = &bps[MI_SCREEN(mi)]; - GLfloat n; - double x, y, z; - - get_position (f->rot, &x, &y, &z, !bp->button_down_p); - - glPushMatrix(); - glTranslatef (f->x, f->y, f->z); - - gltrackball_rotate (bp->trackball); - - glRotatef (y * 360, 0.0, 1.0, 0.0); - if (f->spinner_p) - { - glRotatef (x * 360, 1.0, 0.0, 0.0); - glRotatef (z * 360, 0.0, 0.0, 1.0); - } - - n = 1.5; - if (bp->nfloaters > 99) n *= 0.05; - else if (bp->nfloaters > 25) n *= 0.18; - else if (bp->nfloaters > 9) n *= 0.3; - else if (bp->nfloaters > 1) n *= 0.7; - glScalef(n, n, n); - - glCallList (bp->dlists[FACE]); - mi->polygon_count += (*all_objs[FACE])->points / 3; - - glCallList (bp->dlists[HIDE]); - mi->polygon_count += (*all_objs[HIDE])->points / 3; - - glCallList (bp->dlists[HOOFS]); - mi->polygon_count += (*all_objs[HOOFS])->points / 3; - - glCallList (bp->dlists[HORNS]); - mi->polygon_count += (*all_objs[HORNS])->points / 3; - - glCallList (bp->dlists[TAIL]); - mi->polygon_count += (*all_objs[TAIL])->points / 3; - - glCallList (bp->dlists[UDDER]); - mi->polygon_count += (*all_objs[UDDER])->points / 3; - - glPopMatrix(); -} - - - -ENTRYPOINT void -draw_cow (ModeInfo *mi) -{ - cow_configuration *bp = &bps[MI_SCREEN(mi)]; - Display *dpy = MI_DISPLAY(mi); - Window window = MI_WINDOW(mi); - int i; - - if (!bp->glx_context) - return; - - glXMakeCurrent(MI_DISPLAY(mi), MI_WINDOW(mi), *bp->glx_context); - - glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); - - glPushMatrix (); - - { - GLfloat s = (MI_WIDTH(mi) < MI_HEIGHT(mi) - ? (MI_WIDTH(mi) / (GLfloat) MI_HEIGHT(mi)) - : 1); - glRotatef(current_device_rotation(), 0, 0, 1); - glScalef (s, s, s); - } - - glScalef (0.5, 0.5, 0.5); - - mi->polygon_count = 0; - - if (mathematical) - { - switch (bp->mode) { - case BOUNCE: - if (bp->ratio == 0 && !(random() % 400)) - bp->mode = INFLATE; - else if (bp->ratio > 0 && !(random() % 2000)) - bp->mode = DEFLATE; - break; - case INFLATE: - bp->ratio += 0.01; - if (bp->ratio >= 1) - { - bp->ratio = 1; - bp->mode = BOUNCE; - } - break; - case DEFLATE: - bp->ratio -= 0.01; - if (bp->ratio <= 0) - { - bp->ratio = 0; - bp->mode = BOUNCE; - } - break; - default: - abort(); - } - - if (bp->ratio > 0) - render_cow (mi, bp->ratio); - } - -# if 0 - { - floater F; - F.x = F.y = F.z = 0; - F.dx = F.dy = F.dz = 0; - F.ddx = F.ddy = F.ddz = 0; - F.rot = make_rotator (0, 0, 0, 1, 0, False); - glScalef(2,2,2); - draw_floater (mi, &F); - } -# else - for (i = 0; i < bp->nfloaters; i++) - { - /* "Don't kid yourself, Jimmy. If a cow ever got the chance, - he'd eat you and everyone you care about!" - -- Troy McClure in "Meat and You: Partners in Freedom" - */ - floater *f = &bp->floaters[i]; - draw_floater (mi, f); - tick_floater (mi, f); - } -# endif - - glPopMatrix (); - - if (mi->fps_p) do_fps (mi); - glFinish(); - - glXSwapBuffers(dpy, window); -} - - -ENTRYPOINT void -free_cow (ModeInfo *mi) -{ - cow_configuration *bp = &bps[MI_SCREEN(mi)]; - int i; - if (!bp->glx_context) return; - glXMakeCurrent(MI_DISPLAY(mi), MI_WINDOW(mi), *bp->glx_context); - if (bp->floaters) { - for (i = 0; i < bp->nfloaters; i++) - free_rotator (bp->floaters[i].rot); - free (bp->floaters); - } - for (i = 0; i < countof(all_objs); i++) - if (glIsList(bp->dlists[i])) glDeleteLists(bp->dlists[i], 1); - if (bp->trackball) gltrackball_free (bp->trackball); - if (bp->dlists) free (bp->dlists); -} - -XSCREENSAVER_MODULE_2 ("BouncingCow", bouncingcow, cow) - -#endif /* USE_GL */ |