| 1 | |
| 2 | /* |
| 3 | |
| 4 | * Original Author Unknow. |
| 5 | |
| 6 | * 8/10/88 - Ported from X10 to X11R3 by: |
| 7 | |
| 8 | Jonathan Greenblatt (jonnyg@rover.umd.edu) |
| 9 | |
| 10 | * Cleaned up by Dave Lemke (lemke@sun.com) |
| 11 | |
| 12 | * Ported to monocrome by Jonathan Greenblatt (jonnyg@rover.umd.edu) |
| 13 | |
| 14 | * 05/02/1996 Added TrueColor support by TJ Phan (phan@aur.alcatel.com) |
| 15 | |
| 16 | TODO: |
| 17 | |
| 18 | Parameter parsing needs to be redone. |
| 19 | |
| 20 | * Throughout 1991 improved for animation and color and multiple |
| 21 | fish types. Broke monocrome in the process. |
| 22 | Eric Bina (ebina@ncsa.uiuc.edu) |
| 23 | |
| 24 | * 1992 added extra color remapping control options, as well as ways |
| 25 | to let the fish swim on the root window, or an image of the users |
| 26 | choice. Eric Bina (ebina@ncsa.uiuc.edu) |
| 27 | |
| 28 | */ |
| 29 | |
| 30 | #include <sys/types.h> |
| 31 | #ifndef hpux |
| 32 | #include <sys/time.h> |
| 33 | #else |
| 34 | #include <time.h> |
| 35 | #endif |
| 36 | |
| 37 | #include <stdio.h> |
| 38 | #include <stdlib.h> |
| 39 | #include <unistd.h> |
| 40 | #include <string.h> |
| 41 | #ifdef sgi |
| 42 | #define _BSD_SIGNALS |
| 43 | #endif |
| 44 | #include <signal.h> |
| 45 | #include <X11/Xlib.h> |
| 46 | #include <X11/Xutil.h> |
| 47 | |
| 48 | #include "vroot.h" |
| 49 | #include "xfishy.h" |
| 50 | #include "bubbles.h" |
| 51 | #include "medcut.h" |
| 52 | |
| 53 | /* constants are based on rand(3C) returning an integer between 0 and 32767 */ |
| 54 | |
| 55 | #if defined(ultrix) || defined(sun) || defined(linux) |
| 56 | #define RAND_I_1_16 134217728 |
| 57 | #define RAND_F_1_8 268435455.875 |
| 58 | #define RAND_I_1_4 536870911 |
| 59 | #define RAND_I_1_2 1073741823 |
| 60 | #define RAND_I_3_4 1610612735 |
| 61 | #define RAND_F_MAX 2147483647.0 |
| 62 | #elif defined(__FreeBSD__) || defined(__OpenBSD__) |
| 63 | #define RAND_I_1_16 (RAND_MAX>>4) |
| 64 | #define RAND_F_1_8 ((float)(RAND_MAX>>3)) |
| 65 | #define RAND_I_1_4 (RAND_MAX>>2) |
| 66 | #define RAND_I_1_2 (RAND_MAX>>1) |
| 67 | #define RAND_I_3_4 ((RAND_MAX>>2)*3) |
| 68 | #define RAND_F_MAX ((float)RAND_MAX) |
| 69 | #else |
| 70 | #define RAND_I_1_16 2048 |
| 71 | #define RAND_F_1_8 4096.0 |
| 72 | #define RAND_I_1_4 8096 |
| 73 | #define RAND_I_1_2 16384 |
| 74 | #define RAND_I_3_4 24575 |
| 75 | #define RAND_F_MAX 32767.0 |
| 76 | #endif |
| 77 | |
| 78 | |
| 79 | extern unsigned char *ReadBitmap(); |
| 80 | |
| 81 | |
| 82 | /* externals for pixmap and bimaps from xfishy.h */ |
| 83 | |
| 84 | |
| 85 | /* typedefs for bubble and fish structures, also caddr_t (not used in X.h) */ |
| 86 | typedef struct { |
| 87 | int x, y, s, erased, i; |
| 88 | } bubble; |
| 89 | typedef struct { |
| 90 | int x, y, d, frame, type, i; |
| 91 | } fish; |
| 92 | typedef unsigned char *caddrt; |
| 93 | |
| 94 | |
| 95 | /* bubble increment and yes check tables */ |
| 96 | int binc[] = { 0, 64, 56, 48, 40, 32, 24, 16, 8 }; |
| 97 | char *yess[] = { "yes", "Yes", "YES", "on", "On", "ON" }; |
| 98 | |
| 99 | |
| 100 | char *pname, /* program name from argv[0] */ |
| 101 | sname[64], /* host:display specification */ |
| 102 | cname[64]; /* colorname specification */ |
| 103 | char picname[256]; /* name of the background picture file */ |
| 104 | int *Allocated; /* mark the used colors */ |
| 105 | int AllocCnt; /* count number of colors used */ |
| 106 | int mlimit = 0; /* num colors to median cut to. 0 = no limit */ |
| 107 | int climit = 0; /* limit on color use. 0 = no limit */ |
| 108 | int DoubleBuf = 0; /* Should we use double buffering */ |
| 109 | int Overlap = 0; /* Should fish swim over each other */ |
| 110 | int DoClipping = 0; /* Should clip masks be used. */ |
| 111 | int blimit = 32, /* bubble limit */ |
| 112 | flimit = 10, /* fish limit */ |
| 113 | pmode = 1, /* pop mode, (1 for lower, 0 for raise) */ |
| 114 | width, /* width of initial window in pixels */ |
| 115 | height, /* height of initial window in pixels */ |
| 116 | screen, /* Default screen of this display */ |
| 117 | Init_B, *cmap; /* Initialize bubbles with random y value */ |
| 118 | int Pwidth; /* width of background picture */ |
| 119 | int Pheight; /* height of background picture */ |
| 120 | int Pcnt; /* number of colors in background picture */ |
| 121 | unsigned char *Pdata; /* data from background picture */ |
| 122 | double rate = 0.2, /* update interval in seconds */ |
| 123 | smooth = 0.2; /* smoothness increment multiplier */ |
| 124 | bubble *binfo; /* bubble info structures, allocated |
| 125 | * dynamically */ |
| 126 | fish *finfo; /* fish info structures, allocated dynamically */ |
| 127 | Display *Dpy; |
| 128 | Window root_window; |
| 129 | XImage *xfishA[NUM_FISH][3]; /* fish pixmaps (1 is left-fish, 2 is |
| 130 | * right-fish) */ |
| 131 | XImage *xfishB[NUM_FISH][3]; /* fish pixmaps (1 is left-fish, 2 is |
| 132 | * right-fish) */ |
| 133 | Pixmap pfishA[NUM_FISH][3]; |
| 134 | Pixmap pfishB[NUM_FISH][3]; |
| 135 | |
| 136 | Pixmap mfishA[NUM_FISH][3]; /* masking pixmaps for fish to use as */ |
| 137 | Pixmap mfishB[NUM_FISH][3]; /* clipmasks */ |
| 138 | |
| 139 | Pixmap PicMap; /* pixmap for background picture */ |
| 140 | |
| 141 | Pixmap PixBuf; /* Pixmap buffer for double buffering */ |
| 142 | Pixmap ClipBuf; /* Clipmask buffer for double buffering */ |
| 143 | |
| 144 | Pixmap xbubbles[9]; /* bubbles bitmaps (1 to 8, by size in pixels) */ |
| 145 | Window wid; /* aqaurium window */ |
| 146 | unsigned long white, black, bcolor; |
| 147 | Colormap colormap; |
| 148 | GC c0gc, cpgc; /* GCs to operateon the Clipmask buffer */ |
| 149 | GC pgc; |
| 150 | GC gc, bgc; |
| 151 | |
| 152 | |
| 153 | /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
| 154 | Output desired error message and exit. |
| 155 | * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ |
| 156 | void |
| 157 | msgdie(message) |
| 158 | char *message; |
| 159 | { |
| 160 | fprintf(stderr, "%s: %s\n", pname, message); |
| 161 | exit(1); |
| 162 | } |
| 163 | |
| 164 | |
| 165 | /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
| 166 | Set up program defaults, get X defaults, parse command line using getopts. |
| 167 | * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ |
| 168 | void |
| 169 | parse(argc, argv) |
| 170 | int argc; |
| 171 | char **argv; |
| 172 | { |
| 173 | int c, i; |
| 174 | extern int optind; |
| 175 | extern char *optarg; |
| 176 | extern double atof(); |
| 177 | |
| 178 | pname = argv[0]; |
| 179 | strncpy(sname, getenv("DISPLAY"), sizeof(sname) - 1); |
| 180 | strcpy(cname, "MediumAquamarine"); |
| 181 | |
| 182 | while ((c = getopt(argc, argv, "dDob:C:c:p:m:f:i:r:s")) != EOF) { |
| 183 | switch (c) { |
| 184 | case 'd': |
| 185 | DoClipping = 1; |
| 186 | break; |
| 187 | case 'D': |
| 188 | DoubleBuf = 1; |
| 189 | break; |
| 190 | case 'o': |
| 191 | Overlap = 1; |
| 192 | break; |
| 193 | case 'b': |
| 194 | blimit = atoi(optarg); |
| 195 | break; |
| 196 | case 'C': |
| 197 | climit = atoi(optarg); |
| 198 | break; |
| 199 | case 'm': |
| 200 | mlimit = atoi(optarg); |
| 201 | break; |
| 202 | case 'c': |
| 203 | strncpy(cname, optarg, sizeof(cname) - 1); |
| 204 | break; |
| 205 | case 'p': |
| 206 | strncpy(picname, optarg, sizeof(picname) - 1); |
| 207 | break; |
| 208 | case 'f': |
| 209 | flimit = atoi(optarg); |
| 210 | break; |
| 211 | case 'i': |
| 212 | smooth = atof(optarg); |
| 213 | break; |
| 214 | case 'r': |
| 215 | rate = atof(optarg); |
| 216 | break; |
| 217 | case 's': |
| 218 | pmode = 0; |
| 219 | break; |
| 220 | case '?': |
| 221 | fprintf(stderr, "usage: %s\n", pname); |
| 222 | fprintf(stderr, "\t\t[-c color] background color\n"); |
| 223 | fprintf(stderr, "\t\t[-b limit] number of bubbles (default 32)\n"); |
| 224 | fprintf(stderr, "\t\t[-f limit] number of fish (default 10)\n"); |
| 225 | fprintf(stderr, "\t\t[-i mult] move interval (default 0.2)\n"); |
| 226 | fprintf(stderr, "\t\t[-r rate] move frequency (default 0.2)\n"); |
| 227 | fprintf(stderr, "\t\t[-m num] median cut to this many colors\n"); |
| 228 | fprintf(stderr, "\t\t[-C num] use only this many color cells\n"); |
| 229 | fprintf(stderr, "\t\t[-d] clip fish, swim on root window\n"); |
| 230 | fprintf(stderr, "\t\t[-p file] fish swim on picture in file\n"); |
| 231 | fprintf(stderr, "\t\t[host:display]\n"); |
| 232 | exit(1); |
| 233 | } |
| 234 | } |
| 235 | |
| 236 | if (optind < argc) { |
| 237 | char *display; |
| 238 | |
| 239 | strncpy(sname, argv[optind], sizeof(sname) - 1); |
| 240 | display = (char *) malloc(strlen(sname) + 9); |
| 241 | snprintf(display, sizeof(display) - 1, "DISPLAY=%s", sname); |
| 242 | putenv(display); |
| 243 | } |
| 244 | } |
| 245 | |
| 246 | |
| 247 | void |
| 248 | erasefish(f, x, y, d) |
| 249 | fish *f; |
| 250 | int x, y, d; |
| 251 | { |
| 252 | /* |
| 253 | * for something as small as a bubble, it was never worth the |
| 254 | * effort of using clipmasks to only turn of the bubble itself, so |
| 255 | * we just clear the whole rectangle. |
| 256 | */ |
| 257 | XClearArea(Dpy, wid, x, y, rwidth[f->type], rheight[f->type], False); |
| 258 | #if 0 |
| 259 | XGCValues gcv; |
| 260 | |
| 261 | if (f->frame) { |
| 262 | gcv.foreground = cmap[0]; |
| 263 | gcv.fill_style = FillTiled; |
| 264 | gcv.fill_style = FillSolid; |
| 265 | gcv.tile = pfishB[f->type][d]; |
| 266 | gcv.ts_x_origin = f->x; |
| 267 | gcv.ts_y_origin = f->y; |
| 268 | gcv.clip_mask = mfishB[f->type][d]; |
| 269 | gcv.clip_x_origin = x; |
| 270 | gcv.clip_y_origin = y; |
| 271 | XChangeGC(Dpy, gc, GCForeground | GCClipMask | |
| 272 | GCTile | GCTileStipXOrigin | GCTileStipYOrigin | |
| 273 | GCFillStyle | GCClipXOrigin | GCClipYOrigin, &gcv); |
| 274 | XCopyPlane(Dpy, mfishB[f->type][d], wid, gc, 0, 0, |
| 275 | rwidth[f->type], rheight[f->type], x, y, (unsigned long) 1); |
| 276 | } else { |
| 277 | gcv.foreground = cmap[0]; |
| 278 | gcv.fill_style = FillTiled; |
| 279 | gcv.fill_style = FillSolid; |
| 280 | gcv.tile = pfishA[f->type][d]; |
| 281 | gcv.ts_x_origin = f->x; |
| 282 | gcv.ts_y_origin = f->y; |
| 283 | gcv.clip_mask = mfishA[f->type][d]; |
| 284 | gcv.clip_x_origin = x; |
| 285 | gcv.clip_y_origin = y; |
| 286 | XChangeGC(Dpy, gc, GCForeground | GCClipMask | |
| 287 | GCTile | GCTileStipXOrigin | GCTileStipYOrigin | |
| 288 | GCFillStyle | GCClipXOrigin | GCClipYOrigin, &gcv); |
| 289 | XCopyPlane(Dpy, mfishA[f->type][d], wid, gc, 0, 0, |
| 290 | rwidth[f->type], rheight[f->type], x, y, (unsigned long) 1); |
| 291 | } |
| 292 | #endif |
| 293 | } |
| 294 | |
| 295 | |
| 296 | /* |
| 297 | * Just places a fish. Normally this is all you need for animation, since |
| 298 | * placeing the fish places an entire rectangle which erases most of the old |
| 299 | * fish (the rest being cleaned up by the function that called putfish. |
| 300 | * If DoClipping is set, this function is only called when placing a new |
| 301 | * fish, otherwise newfish is called. |
| 302 | */ |
| 303 | void |
| 304 | putfish(f) |
| 305 | fish *f; |
| 306 | { |
| 307 | XGCValues gcv; |
| 308 | |
| 309 | if (f->frame) { |
| 310 | /* |
| 311 | * If we have a pixmap of the fish use it, otherwise use |
| 312 | * the XImage of the fish. In reality we will never use |
| 313 | * the XImage since X dies if the pixmap create failed |
| 314 | */ |
| 315 | if (pfishA[f->type][f->d]) { |
| 316 | /* |
| 317 | * Clipping overrides background picture because |
| 318 | * the clipping prevents the drawing of any background |
| 319 | * anyway. |
| 320 | * DoClipping says just print a fish leaving the |
| 321 | * background unchanged. |
| 322 | * If there is a background picture, we use a buffer |
| 323 | * to prevent flashing, we combine the background |
| 324 | * picture and the fish, and then copy the |
| 325 | * whole rectangle in. |
| 326 | * Default is just copy in fish in with a background |
| 327 | * color. |
| 328 | */ |
| 329 | if (DoClipping) { |
| 330 | gcv.clip_mask = mfishA[f->type][f->d]; |
| 331 | gcv.clip_x_origin = f->x; |
| 332 | gcv.clip_y_origin = f->y; |
| 333 | XChangeGC(Dpy, gc, GCClipMask | GCClipXOrigin | GCClipYOrigin, &gcv); |
| 334 | XCopyArea(Dpy, pfishA[f->type][f->d], wid, gc, |
| 335 | 0, 0, rwidth[f->type], rheight[f->type], f->x, f->y); |
| 336 | } else if (picname[0] != '\0') { |
| 337 | gcv.fill_style = FillTiled; |
| 338 | gcv.tile = PicMap; |
| 339 | gcv.ts_x_origin = -(f->x); |
| 340 | gcv.ts_y_origin = -(f->y); |
| 341 | gcv.clip_mask = None; |
| 342 | XChangeGC(Dpy, pgc, (GCFillStyle | |
| 343 | GCTile | GCTileStipXOrigin | |
| 344 | GCTileStipYOrigin | GCClipMask), &gcv); |
| 345 | XFillRectangle(Dpy, PixBuf, pgc, 0, 0, rwidth[f->type], rheight[f->type]); |
| 346 | |
| 347 | gcv.clip_mask = mfishA[f->type][f->d]; |
| 348 | gcv.clip_x_origin = 0; |
| 349 | gcv.clip_y_origin = 0; |
| 350 | XChangeGC(Dpy, pgc, GCClipMask | GCClipXOrigin | GCClipYOrigin, &gcv); |
| 351 | XCopyArea(Dpy, pfishA[f->type][f->d], PixBuf, pgc, |
| 352 | 0, 0, rwidth[f->type], rheight[f->type], 0, 0); |
| 353 | |
| 354 | XCopyArea(Dpy, PixBuf, wid, gc, |
| 355 | 0, 0, rwidth[f->type], rheight[f->type], f->x, f->y); |
| 356 | } else { |
| 357 | XCopyArea(Dpy, pfishA[f->type][f->d], wid, gc, |
| 358 | 0, 0, rwidth[f->type], rheight[f->type], f->x, f->y); |
| 359 | } |
| 360 | } else { |
| 361 | XPutImage(Dpy, wid, gc, xfishA[f->type][f->d], 0, 0, |
| 362 | f->x, f->y, rwidth[f->type], rheight[f->type]); |
| 363 | } |
| 364 | f->frame = 0; |
| 365 | } else { |
| 366 | /* |
| 367 | * same as the above, only for the second frame of animation |
| 368 | */ |
| 369 | if (pfishB[f->type][f->d]) { |
| 370 | if (DoClipping) { |
| 371 | gcv.clip_mask = mfishB[f->type][f->d]; |
| 372 | gcv.clip_x_origin = f->x; |
| 373 | gcv.clip_y_origin = f->y; |
| 374 | XChangeGC(Dpy, gc, GCClipMask | GCClipXOrigin | GCClipYOrigin, &gcv); |
| 375 | XCopyArea(Dpy, pfishB[f->type][f->d], wid, gc, |
| 376 | 0, 0, rwidth[f->type], rheight[f->type], f->x, f->y); |
| 377 | } else if (picname[0] != '\0') { |
| 378 | gcv.fill_style = FillTiled; |
| 379 | gcv.tile = PicMap; |
| 380 | gcv.ts_x_origin = -(f->x); |
| 381 | gcv.ts_y_origin = -(f->y); |
| 382 | gcv.clip_mask = None; |
| 383 | XChangeGC(Dpy, pgc, (GCFillStyle | |
| 384 | GCTile | GCTileStipXOrigin | |
| 385 | GCTileStipYOrigin | GCClipMask), &gcv); |
| 386 | XFillRectangle(Dpy, PixBuf, pgc, 0, 0, rwidth[f->type], rheight[f->type]); |
| 387 | |
| 388 | gcv.clip_mask = mfishB[f->type][f->d]; |
| 389 | gcv.clip_x_origin = 0; |
| 390 | gcv.clip_y_origin = 0; |
| 391 | XChangeGC(Dpy, pgc, GCClipMask | GCClipXOrigin | GCClipYOrigin, &gcv); |
| 392 | XCopyArea(Dpy, pfishB[f->type][f->d], PixBuf, pgc, |
| 393 | 0, 0, rwidth[f->type], rheight[f->type], 0, 0); |
| 394 | |
| 395 | XCopyArea(Dpy, PixBuf, wid, gc, |
| 396 | 0, 0, rwidth[f->type], rheight[f->type], f->x, f->y); |
| 397 | } else { |
| 398 | XCopyArea(Dpy, pfishB[f->type][f->d], wid, gc, |
| 399 | 0, 0, rwidth[f->type], rheight[f->type], f->x, f->y); |
| 400 | } |
| 401 | } else { |
| 402 | XPutImage(Dpy, wid, gc, xfishB[f->type][f->d], 0, 0, |
| 403 | f->x, f->y, rwidth[f->type], rheight[f->type]); |
| 404 | } |
| 405 | f->frame = 1; |
| 406 | } |
| 407 | } |
| 408 | |
| 409 | |
| 410 | /* |
| 411 | * This function can only be called if DoClipping is True. It is used to |
| 412 | * move a clipmasked fish. First the area under the fish is cleared, |
| 413 | * and then the new fish is masked in. |
| 414 | * The parameters x, y, amd d are from the old fish that is being |
| 415 | * erased before the new fish is drawn. |
| 416 | */ |
| 417 | void |
| 418 | movefish(f, x, y, d) |
| 419 | fish *f; |
| 420 | int x, y, d; |
| 421 | { |
| 422 | XGCValues gcv; |
| 423 | int bx, by, bw, bh; |
| 424 | |
| 425 | /* |
| 426 | * If we are going to double buffer, we need to find the bounding |
| 427 | * rectangle of the overlap of the bounding rectangles of the old |
| 428 | * and the new fish. |
| 429 | */ |
| 430 | if (DoubleBuf) { |
| 431 | if (x < f->x) { |
| 432 | bx = x; |
| 433 | bw = f->x - x + rwidth[f->type]; |
| 434 | } else { |
| 435 | bx = f->x; |
| 436 | bw = x - f->x + rwidth[f->type]; |
| 437 | } |
| 438 | if (y < f->y) { |
| 439 | by = y; |
| 440 | bh = f->y - y + rheight[f->type]; |
| 441 | } else { |
| 442 | by = f->y; |
| 443 | bh = y - f->y + rheight[f->type]; |
| 444 | } |
| 445 | } |
| 446 | |
| 447 | if (f->frame) { |
| 448 | /* |
| 449 | * If there is a pixmap use it. |
| 450 | * This branchis always taken since right now, if the pixmap |
| 451 | * allocation failed, the program dies. |
| 452 | */ |
| 453 | if (pfishA[f->type][f->d]) { |
| 454 | /* |
| 455 | * A pointless if, you now only come here if |
| 456 | * DoClipping is set, I've just been too lazy to |
| 457 | * clean up my code. |
| 458 | */ |
| 459 | if (DoClipping) { |
| 460 | /* |
| 461 | * Set up the masked gc for when we eventually |
| 462 | * draw the fish. Origin is different for |
| 463 | * whether we are drawing into the buffer |
| 464 | * or into the window |
| 465 | */ |
| 466 | gcv.clip_mask = mfishA[f->type][f->d]; |
| 467 | if (DoubleBuf) { |
| 468 | gcv.clip_x_origin = f->x - bx; |
| 469 | gcv.clip_y_origin = f->y - by; |
| 470 | } else { |
| 471 | gcv.clip_x_origin = f->x; |
| 472 | gcv.clip_y_origin = f->y; |
| 473 | } |
| 474 | XChangeGC(Dpy, gc, GCClipMask | GCClipXOrigin | GCClipYOrigin, &gcv); |
| 475 | |
| 476 | /* |
| 477 | * If we have a background picture we want to |
| 478 | * clear to that background, otherwise we just |
| 479 | * do an XCleararea, and let the root restore |
| 480 | * the background. |
| 481 | */ |
| 482 | if (picname[0] != '\0') { |
| 483 | gcv.fill_style = FillTiled; |
| 484 | gcv.tile = PicMap; |
| 485 | gcv.clip_mask = mfishB[f->type][d]; |
| 486 | if (DoubleBuf) { |
| 487 | gcv.ts_x_origin = 0 - bx; |
| 488 | gcv.ts_y_origin = 0 - by; |
| 489 | gcv.clip_x_origin = x - bx; |
| 490 | gcv.clip_y_origin = y - by; |
| 491 | } else { |
| 492 | gcv.ts_x_origin = 0; |
| 493 | gcv.ts_y_origin = 0; |
| 494 | gcv.clip_x_origin = x; |
| 495 | gcv.clip_y_origin = y; |
| 496 | } |
| 497 | XChangeGC(Dpy, pgc, (GCFillStyle | |
| 498 | GCTile | GCTileStipXOrigin | |
| 499 | GCTileStipYOrigin | GCClipMask | |
| 500 | GCClipXOrigin | GCClipYOrigin), &gcv); |
| 501 | |
| 502 | /* |
| 503 | * if bouble buffering we clear the buffer |
| 504 | * to the backgound picture, and then |
| 505 | * shape the clip buffer to the shape of |
| 506 | * the fish being erased. |
| 507 | */ |
| 508 | if (DoubleBuf) { |
| 509 | XFillRectangle(Dpy, PixBuf, pgc, |
| 510 | x - bx, y - by, rwidth[f->type], rheight[f->type]); |
| 511 | XFillRectangle(Dpy, ClipBuf, c0gc, 0, 0, 500, 500); |
| 512 | XCopyArea(Dpy, mfishB[f->type][d], |
| 513 | ClipBuf, cpgc, 0, 0, |
| 514 | rwidth[f->type], rheight[f->type], x - bx, y - by); |
| 515 | } else { |
| 516 | XFillRectangle(Dpy, wid, pgc, x, y, rwidth[f->type], rheight[f->type]); |
| 517 | } |
| 518 | } else { |
| 519 | XClearArea(Dpy, wid, x, y, rwidth[f->type], rheight[f->type], 0); |
| 520 | } |
| 521 | } |
| 522 | /* |
| 523 | * Now we just copy in the new fish with a clipmasked gc. |
| 524 | * But if we doublebuffered, we copy the new fish into |
| 525 | * the buffer, combine the new fishes clipmask in, and |
| 526 | * then mask the whole lot from the buffer to the window. |
| 527 | */ |
| 528 | if (DoubleBuf) { |
| 529 | XCopyArea(Dpy, pfishA[f->type][f->d], PixBuf, gc, 0, 0, |
| 530 | rwidth[f->type], rheight[f->type], f->x - bx, f->y - by); |
| 531 | XCopyArea(Dpy, mfishA[f->type][f->d], ClipBuf, cpgc, |
| 532 | 0, 0, rwidth[f->type], rheight[f->type], f->x - bx, f->y - by); |
| 533 | gcv.clip_mask = ClipBuf; |
| 534 | gcv.clip_x_origin = bx; |
| 535 | gcv.clip_y_origin = by; |
| 536 | XChangeGC(Dpy, gc, GCClipMask | GCClipXOrigin | GCClipYOrigin, &gcv); |
| 537 | XCopyArea(Dpy, PixBuf, wid, gc, 0, 0, bw, bh, bx, by); |
| 538 | } else { |
| 539 | XCopyArea(Dpy, pfishA[f->type][f->d], wid, gc, 0, 0, |
| 540 | rwidth[f->type], rheight[f->type], f->x, f->y); |
| 541 | } |
| 542 | } else { |
| 543 | if (DoClipping) { |
| 544 | if (picname[0] != '\0') { |
| 545 | gcv.fill_style = FillTiled; |
| 546 | gcv.tile = PicMap; |
| 547 | gcv.ts_x_origin = 0; |
| 548 | gcv.ts_y_origin = 0; |
| 549 | gcv.clip_mask = mfishB[f->type][d]; |
| 550 | gcv.clip_x_origin = x; |
| 551 | gcv.clip_y_origin = y; |
| 552 | XChangeGC(Dpy, pgc, (GCFillStyle | |
| 553 | GCTile | GCTileStipXOrigin | |
| 554 | GCTileStipYOrigin | GCClipMask | |
| 555 | GCClipXOrigin | GCClipYOrigin), &gcv); |
| 556 | XFillRectangle(Dpy, wid, pgc, x, y, rwidth[f->type], rheight[f->type]); |
| 557 | } else { |
| 558 | XClearArea(Dpy, wid, x, y, rwidth[f->type], rheight[f->type], 0); |
| 559 | } |
| 560 | } |
| 561 | XPutImage(Dpy, wid, gc, xfishA[f->type][f->d], 0, 0, |
| 562 | f->x, f->y, rwidth[f->type], rheight[f->type]); |
| 563 | } |
| 564 | f->frame = 0; |
| 565 | } else { |
| 566 | /* |
| 567 | * Same as above, only for the second frame of animation. |
| 568 | */ |
| 569 | if (pfishB[f->type][f->d]) { |
| 570 | if (DoClipping) { |
| 571 | gcv.clip_mask = mfishB[f->type][f->d]; |
| 572 | if (DoubleBuf) { |
| 573 | gcv.clip_x_origin = f->x - bx; |
| 574 | gcv.clip_y_origin = f->y - by; |
| 575 | } else { |
| 576 | gcv.clip_x_origin = f->x; |
| 577 | gcv.clip_y_origin = f->y; |
| 578 | } |
| 579 | XChangeGC(Dpy, gc, GCClipMask | GCClipXOrigin | GCClipYOrigin, &gcv); |
| 580 | if (picname[0] != '\0') { |
| 581 | gcv.fill_style = FillTiled; |
| 582 | gcv.tile = PicMap; |
| 583 | gcv.clip_mask = mfishA[f->type][d]; |
| 584 | if (DoubleBuf) { |
| 585 | gcv.ts_x_origin = 0 - bx; |
| 586 | gcv.ts_y_origin = 0 - by; |
| 587 | gcv.clip_x_origin = x - bx; |
| 588 | gcv.clip_y_origin = y - by; |
| 589 | } else { |
| 590 | gcv.ts_x_origin = 0; |
| 591 | gcv.ts_y_origin = 0; |
| 592 | gcv.clip_x_origin = x; |
| 593 | gcv.clip_y_origin = y; |
| 594 | } |
| 595 | XChangeGC(Dpy, pgc, (GCFillStyle | |
| 596 | GCTile | GCTileStipXOrigin | |
| 597 | GCTileStipYOrigin | GCClipMask | |
| 598 | GCClipXOrigin | GCClipYOrigin), &gcv); |
| 599 | if (DoubleBuf) { |
| 600 | XFillRectangle(Dpy, PixBuf, pgc, |
| 601 | x - bx, y - by, rwidth[f->type], rheight[f->type]); |
| 602 | XFillRectangle(Dpy, ClipBuf, c0gc, 0, 0, 500, 500); |
| 603 | XCopyArea(Dpy, mfishA[f->type][d], |
| 604 | ClipBuf, cpgc, 0, 0, |
| 605 | rwidth[f->type], rheight[f->type], x - bx, y - by); |
| 606 | } else { |
| 607 | XFillRectangle(Dpy, wid, pgc, x, y, rwidth[f->type], rheight[f->type]); |
| 608 | } |
| 609 | } else { |
| 610 | XClearArea(Dpy, wid, x, y, rwidth[f->type], rheight[f->type], 0); |
| 611 | } |
| 612 | } |
| 613 | if (DoubleBuf) { |
| 614 | XCopyArea(Dpy, pfishB[f->type][f->d], PixBuf, gc, 0, 0, |
| 615 | rwidth[f->type], rheight[f->type], f->x - bx, f->y - by); |
| 616 | XCopyArea(Dpy, mfishB[f->type][f->d], ClipBuf, cpgc, |
| 617 | 0, 0, rwidth[f->type], rheight[f->type], f->x - bx, f->y - by); |
| 618 | gcv.clip_mask = ClipBuf; |
| 619 | gcv.clip_x_origin = bx; |
| 620 | gcv.clip_y_origin = by; |
| 621 | XChangeGC(Dpy, gc, GCClipMask | GCClipXOrigin | GCClipYOrigin, &gcv); |
| 622 | XCopyArea(Dpy, PixBuf, wid, gc, 0, 0, bw, bh, bx, by); |
| 623 | } else { |
| 624 | XCopyArea(Dpy, pfishB[f->type][f->d], wid, gc, 0, 0, |
| 625 | rwidth[f->type], rheight[f->type], f->x, f->y); |
| 626 | } |
| 627 | } else { |
| 628 | if (DoClipping) { |
| 629 | if (picname[0] != '\0') { |
| 630 | gcv.fill_style = FillTiled; |
| 631 | gcv.tile = PicMap; |
| 632 | gcv.ts_x_origin = 0; |
| 633 | gcv.ts_y_origin = 0; |
| 634 | gcv.clip_mask = mfishA[f->type][d]; |
| 635 | gcv.clip_x_origin = x; |
| 636 | gcv.clip_y_origin = y; |
| 637 | XChangeGC(Dpy, pgc, (GCFillStyle | |
| 638 | GCTile | GCTileStipXOrigin | |
| 639 | GCTileStipYOrigin | GCClipMask | |
| 640 | GCClipXOrigin | GCClipYOrigin), &gcv); |
| 641 | XFillRectangle(Dpy, wid, pgc, x, y, rwidth[f->type], rheight[f->type]); |
| 642 | } else { |
| 643 | XClearArea(Dpy, wid, x, y, rwidth[f->type], rheight[f->type], 0); |
| 644 | } |
| 645 | } |
| 646 | XPutImage(Dpy, wid, gc, xfishB[f->type][f->d], 0, 0, |
| 647 | f->x, f->y, rwidth[f->type], rheight[f->type]); |
| 648 | } |
| 649 | f->frame = 1; |
| 650 | } |
| 651 | } |
| 652 | |
| 653 | |
| 654 | erasebubble(b, s) |
| 655 | bubble *b; |
| 656 | int s; |
| 657 | { |
| 658 | XClearArea(Dpy, wid, b->x, b->y, s, s, 0); |
| 659 | } |
| 660 | |
| 661 | |
| 662 | putbubble(b, s, c) |
| 663 | bubble *b; |
| 664 | int s; |
| 665 | unsigned long c; |
| 666 | { |
| 667 | XGCValues gcv; |
| 668 | |
| 669 | gcv.foreground = c; |
| 670 | gcv.clip_mask = xbubbles[s]; |
| 671 | gcv.clip_x_origin = b->x; |
| 672 | gcv.clip_y_origin = b->y; |
| 673 | XChangeGC(Dpy, bgc, GCForeground | GCClipMask | GCClipXOrigin | GCClipYOrigin, &gcv); |
| 674 | XFillRectangle(Dpy, wid, bgc, b->x, b->y, s, s); |
| 675 | } |
| 676 | |
| 677 | |
| 678 | /* |
| 679 | * Find the closest color by allocating it, or picking an already allocated |
| 680 | * color |
| 681 | */ |
| 682 | Visual(*visual_info) = NULL; |
| 683 | int r_mask, g_mask, b_mask; |
| 684 | int r_shift = 0, g_shift = 0, b_shift = 0; |
| 685 | int r_bits = 0, g_bits = 0, b_bits = 0; |
| 686 | void |
| 687 | FindColor(Dpy, colormap, colr) |
| 688 | Display *Dpy; |
| 689 | Colormap colormap; |
| 690 | XColor *colr; |
| 691 | { |
| 692 | int i, match; |
| 693 | double rd, gd, bd, dist, mindist; |
| 694 | int cindx; |
| 695 | XColor def_colrs[256]; |
| 696 | int NumCells; |
| 697 | |
| 698 | if (visual_info == NULL && DefaultDepth(Dpy, DefaultScreen(Dpy)) > 8) { |
| 699 | visual_info = DefaultVisual(Dpy, DefaultScreen(Dpy)); |
| 700 | r_mask = visual_info->red_mask; |
| 701 | while (!(r_mask & 1)) { |
| 702 | r_mask >>= 1; |
| 703 | r_shift++; |
| 704 | } |
| 705 | while (r_mask & 1) { |
| 706 | r_mask >>= 1; |
| 707 | r_bits++; |
| 708 | } |
| 709 | |
| 710 | g_mask = visual_info->green_mask; |
| 711 | while (!(g_mask & 1)) { |
| 712 | g_mask >>= 1; |
| 713 | g_shift++; |
| 714 | } |
| 715 | while (g_mask & 1) { |
| 716 | g_mask >>= 1; |
| 717 | g_bits++; |
| 718 | } |
| 719 | |
| 720 | b_mask = visual_info->blue_mask; |
| 721 | while (!(b_mask & 1)) { |
| 722 | b_mask >>= 1; |
| 723 | b_shift++; |
| 724 | } |
| 725 | while (b_mask & 1) { |
| 726 | b_mask >>= 1; |
| 727 | b_bits++; |
| 728 | } |
| 729 | } |
| 730 | |
| 731 | if (DefaultDepth(Dpy, DefaultScreen(Dpy)) > 8) { |
| 732 | colr->red >>= 16 - r_bits; |
| 733 | colr->green >>= 16 - g_bits; |
| 734 | colr->blue >>= 16 - b_bits; |
| 735 | |
| 736 | colr->pixel = ((colr->red << r_shift) & visual_info->red_mask) | |
| 737 | ((colr->green << g_shift) & visual_info->green_mask) | |
| 738 | ((colr->blue << b_shift) & visual_info->blue_mask); |
| 739 | return; |
| 740 | } |
| 741 | |
| 742 | if (AllocCnt < climit) { |
| 743 | match = XAllocColor(Dpy, colormap, colr); |
| 744 | } else { |
| 745 | match = 0; |
| 746 | } |
| 747 | if (match == 0) { |
| 748 | NumCells = DisplayCells(Dpy, DefaultScreen(Dpy)); |
| 749 | for (i = 0; i < NumCells; i++) { |
| 750 | def_colrs[i].pixel = i; |
| 751 | } |
| 752 | XQueryColors(Dpy, colormap, def_colrs, NumCells); |
| 753 | mindist = 65536.0 * 65536.0; |
| 754 | cindx = colr->pixel; |
| 755 | for (i = 0; i < NumCells; i++) { |
| 756 | rd = (def_colrs[i].red - colr->red) / 256.0; |
| 757 | gd = (def_colrs[i].green - colr->green) / 256.0; |
| 758 | bd = (def_colrs[i].blue - colr->blue) / 256.0; |
| 759 | dist = (rd * rd * rd * rd) + (gd * gd * gd * gd) + (bd * bd * bd * bd); |
| 760 | if (dist < mindist) { |
| 761 | mindist = dist; |
| 762 | cindx = def_colrs[i].pixel; |
| 763 | } |
| 764 | } |
| 765 | colr->pixel = cindx; |
| 766 | colr->red = def_colrs[cindx].red; |
| 767 | colr->green = def_colrs[cindx].green; |
| 768 | colr->blue = def_colrs[cindx].blue; |
| 769 | } else { |
| 770 | if (Allocated[colr->pixel] == 0) { |
| 771 | Allocated[colr->pixel] = 1; |
| 772 | AllocCnt++; |
| 773 | } |
| 774 | } |
| 775 | } |
| 776 | |
| 777 | |
| 778 | int |
| 779 | ColorUsage(data, width, height, colrs) |
| 780 | unsigned char *data; |
| 781 | int width, height; |
| 782 | struct colr_data *colrs; |
| 783 | { |
| 784 | int mapping[256]; |
| 785 | int i, size; |
| 786 | int cnt, indx; |
| 787 | unsigned char *ptr; |
| 788 | struct colr_data newcol[256]; |
| 789 | |
| 790 | for (i = 0; i < 256; i++) { |
| 791 | mapping[i] = -1; |
| 792 | } |
| 793 | |
| 794 | size = width * height; |
| 795 | cnt = 0; |
| 796 | ptr = data; |
| 797 | for (i = 0; i < size; i++) { |
| 798 | indx = (int) *ptr; |
| 799 | if (mapping[indx] == -1) { |
| 800 | mapping[indx] = cnt; |
| 801 | newcol[cnt].red = colrs[indx].red; |
| 802 | newcol[cnt].green = colrs[indx].green; |
| 803 | newcol[cnt].blue = colrs[indx].blue; |
| 804 | cnt++; |
| 805 | } |
| 806 | ptr++; |
| 807 | } |
| 808 | |
| 809 | ptr = data; |
| 810 | for (i = 0; i < size; i++) { |
| 811 | indx = (int) *ptr; |
| 812 | *ptr = (unsigned char) mapping[indx]; |
| 813 | ptr++; |
| 814 | } |
| 815 | |
| 816 | for (i = 0; i < cnt; i++) { |
| 817 | colrs[i].red = newcol[i].red; |
| 818 | colrs[i].green = newcol[i].green; |
| 819 | colrs[i].blue = newcol[i].blue; |
| 820 | } |
| 821 | for (i = cnt; i < 256; i++) { |
| 822 | colrs[i].red = 0; |
| 823 | colrs[i].green = 0; |
| 824 | colrs[i].blue = 0; |
| 825 | } |
| 826 | |
| 827 | return (cnt); |
| 828 | } |
| 829 | |
| 830 | |
| 831 | /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
| 832 | Initialize colormap for background color and required fish colors. |
| 833 | The fish colors are coded in xfishy.h as a trio of tables. |
| 834 | * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ |
| 835 | void |
| 836 | init_colormap() |
| 837 | { |
| 838 | FILE *fp; |
| 839 | int i, j, cnt; |
| 840 | int NumCells; |
| 841 | XColor hdef, edef; |
| 842 | struct colr_data *cdp; |
| 843 | struct colr_data colrs[256]; |
| 844 | |
| 845 | colormap = XDefaultColormap(Dpy, screen); |
| 846 | |
| 847 | NumCells = DisplayCells(Dpy, DefaultScreen(Dpy)); |
| 848 | Allocated = (int *) malloc(NumCells * sizeof(int)); |
| 849 | for (i = 0; i < NumCells; i++) { |
| 850 | Allocated[i] = 0; |
| 851 | } |
| 852 | AllocCnt = 0; |
| 853 | if ((climit <= 0) || (climit > NumCells)) { |
| 854 | climit = NumCells; |
| 855 | } |
| 856 | |
| 857 | Pcnt = 0; |
| 858 | if (picname[0] != '\0') { |
| 859 | fp = fopen(picname, "r"); |
| 860 | if (fp == NULL) { |
| 861 | fprintf(stderr, "Cannot open picture %s for reading\n", picname); |
| 862 | } else { |
| 863 | Pdata = ReadBitmap(fp, &Pwidth, &Pheight, colrs); |
| 864 | fclose(fp); |
| 865 | Pcnt = ColorUsage(Pdata, Pwidth, Pheight, colrs); |
| 866 | } |
| 867 | } |
| 868 | |
| 869 | cnt = 0; |
| 870 | cnt += Pcnt; |
| 871 | for (i = 0; i < NUM_FISH; i++) { |
| 872 | cnt += rcolors[i]; |
| 873 | } |
| 874 | cmap = (int *) malloc((cnt + 1) * sizeof(int)); |
| 875 | |
| 876 | XLookupColor(Dpy, colormap, cname, &hdef, &edef); |
| 877 | hdef.flags = DoRed | DoGreen | DoBlue; |
| 878 | FindColor(Dpy, colormap, &hdef); |
| 879 | cmap[0] = hdef.pixel; |
| 880 | |
| 881 | if (mlimit > 0) { |
| 882 | MedianInit(); |
| 883 | } |
| 884 | |
| 885 | if (mlimit > 0) { |
| 886 | if (picname[0] != '\0') { |
| 887 | MedianCount(Pdata, Pwidth, Pheight, colrs); |
| 888 | } |
| 889 | for (j = 0; j < NUM_FISH; j++) { |
| 890 | int *rp, *gp, *bp; |
| 891 | |
| 892 | cdp = (struct colr_data *) malloc(rcolors[j] * sizeof(struct colr_data)); |
| 893 | rp = rreds[j]; |
| 894 | gp = rgreens[j]; |
| 895 | bp = rblues[j]; |
| 896 | for (i = 0; i < rcolors[j]; i++) { |
| 897 | cdp[i].red = *rp++; |
| 898 | cdp[i].green = *gp++; |
| 899 | cdp[i].blue = *bp++; |
| 900 | } |
| 901 | MedianCount((unsigned char *) xfishRasterA[j], |
| 902 | (int) rwidth[j], (int) rheight[j], cdp); |
| 903 | free((char *) cdp); |
| 904 | } |
| 905 | MedianSplit(mlimit); |
| 906 | } |
| 907 | |
| 908 | cnt = 1; |
| 909 | if (picname[0] != '\0') { |
| 910 | for (i = 0; i < Pcnt; i++) { |
| 911 | int rv, gv, bv; |
| 912 | |
| 913 | rv = colrs[i].red; |
| 914 | gv = colrs[i].green; |
| 915 | bv = colrs[i].blue; |
| 916 | |
| 917 | if (mlimit > 0) { |
| 918 | ConvertColor(&rv, &gv, &bv); |
| 919 | } |
| 920 | |
| 921 | hdef.red = rv; |
| 922 | hdef.green = gv; |
| 923 | hdef.blue = bv; |
| 924 | hdef.flags = DoRed | DoGreen | DoBlue; |
| 925 | FindColor(Dpy, colormap, &hdef); |
| 926 | cmap[cnt] = hdef.pixel; |
| 927 | cnt++; |
| 928 | } |
| 929 | } |
| 930 | for (j = 0; j < NUM_FISH; j++) { |
| 931 | int *rp, *gp, *bp; |
| 932 | |
| 933 | rp = rreds[j]; |
| 934 | gp = rgreens[j]; |
| 935 | bp = rblues[j]; |
| 936 | for (i = 0; i < rcolors[j]; i++) { |
| 937 | int rv, gv, bv; |
| 938 | |
| 939 | rv = *rp++; |
| 940 | gv = *gp++; |
| 941 | bv = *bp++; |
| 942 | |
| 943 | if (mlimit > 0) { |
| 944 | ConvertColor(&rv, &gv, &bv); |
| 945 | } |
| 946 | |
| 947 | hdef.red = rv; |
| 948 | hdef.green = gv; |
| 949 | hdef.blue = bv; |
| 950 | hdef.flags = DoRed | DoGreen | DoBlue; |
| 951 | FindColor(Dpy, colormap, &hdef); |
| 952 | cmap[cnt] = hdef.pixel; |
| 953 | if (i == rback[j]) { |
| 954 | cmap[cnt] = cmap[0]; |
| 955 | } |
| 956 | cnt++; |
| 957 | } |
| 958 | } |
| 959 | |
| 960 | bcolor = white; |
| 961 | } |
| 962 | |
| 963 | |
| 964 | /* |
| 965 | * Make am image of appropriate depth for display from image data. |
| 966 | */ |
| 967 | XImage * |
| 968 | MakeImage(data, width, height) |
| 969 | unsigned char *data; |
| 970 | int width, height; |
| 971 | { |
| 972 | int linepad, shiftnum; |
| 973 | int shiftstart, shiftstop, shiftinc; |
| 974 | int bytesperline; |
| 975 | int depth, temp; |
| 976 | int w, h; |
| 977 | XImage *newimage; |
| 978 | unsigned char *bit_data, *bitp, *datap; |
| 979 | |
| 980 | depth = DefaultDepth(Dpy, DefaultScreen(Dpy)); |
| 981 | if ((depth != 1) && (depth != 2) && (depth != 4) && (depth != 8)) { |
| 982 | fprintf(stderr, "Don't know how to format image for display of depth %d\n", depth); |
| 983 | exit(1); |
| 984 | } |
| 985 | |
| 986 | if (BitmapBitOrder(Dpy) == LSBFirst) { |
| 987 | shiftstart = 0; |
| 988 | shiftstop = 8; |
| 989 | shiftinc = depth; |
| 990 | } else { |
| 991 | shiftstart = 8 - depth; |
| 992 | shiftstop = -depth; |
| 993 | shiftinc = -depth; |
| 994 | } |
| 995 | linepad = 8 - (width % 8); |
| 996 | bit_data = (unsigned char *) malloc(((width + linepad) * height) + 1); |
| 997 | bitp = bit_data; |
| 998 | datap = data; |
| 999 | *bitp = 0; |
| 1000 | shiftnum = shiftstart; |
| 1001 | for (h = 0; h < height; h++) { |
| 1002 | for (w = 0; w < width; w++) { |
| 1003 | temp = *datap++ << shiftnum; |
| 1004 | *bitp = *bitp | temp; |
| 1005 | shiftnum = shiftnum + shiftinc; |
| 1006 | if (shiftnum == shiftstop) { |
| 1007 | shiftnum = shiftstart; |
| 1008 | bitp++; |
| 1009 | *bitp = 0; |
| 1010 | } |
| 1011 | } |
| 1012 | for (w = 0; w < linepad; w++) { |
| 1013 | shiftnum = shiftnum + shiftinc; |
| 1014 | if (shiftnum == shiftstop) { |
| 1015 | shiftnum = shiftstart; |
| 1016 | bitp++; |
| 1017 | *bitp = 0; |
| 1018 | } |
| 1019 | } |
| 1020 | } |
| 1021 | |
| 1022 | bytesperline = (width * depth / 8 + linepad); |
| 1023 | newimage = XCreateImage(Dpy, DefaultVisual(Dpy, screen), depth, |
| 1024 | ZPixmap, 0, (char *) bit_data, |
| 1025 | (width + linepad), height, 8, bytesperline); |
| 1026 | |
| 1027 | return (newimage); |
| 1028 | } |
| 1029 | |
| 1030 | |
| 1031 | |
| 1032 | static unsigned char bits[] = { 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80 }; |
| 1033 | |
| 1034 | /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
| 1035 | Calibrate the pixmaps and bimaps. The right-fish data is coded in xfishy.h, |
| 1036 | this is transformed to create the left-fish. The eight bubbles are coded |
| 1037 | in bubbles.h as a two dimensional array. |
| 1038 | * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ |
| 1039 | void |
| 1040 | init_pixmap() |
| 1041 | { |
| 1042 | register caddrt p, q, x1A, x1B, x2A, x2B; |
| 1043 | unsigned char *data; |
| 1044 | register int i, j, k; |
| 1045 | int cnt, wcnt; |
| 1046 | |
| 1047 | cnt = 1; |
| 1048 | cnt += Pcnt; |
| 1049 | for (k = 0; k < NUM_FISH; k++) { |
| 1050 | |
| 1051 | /* |
| 1052 | * The clipmasks must be created before we remap colors. |
| 1053 | * otherwise an opaque color might get remapped to a |
| 1054 | * transparent color. |
| 1055 | */ |
| 1056 | if ((DoClipping) || (picname[0] != '\0')) { |
| 1057 | data = (unsigned char *) malloc((rwidth[k] + 7) / 8 * rheight[k]); |
| 1058 | |
| 1059 | p = (caddrt) xfishRasterA[k]; |
| 1060 | q = data; |
| 1061 | wcnt = 0; |
| 1062 | for (i = 0; i < ((rwidth[k] + 7) / 8 * rheight[k]); i++) { |
| 1063 | unsigned char bt = 0x00; |
| 1064 | for (j = 0; j < 8; j++) { |
| 1065 | if (*p != rback[k]) { |
| 1066 | bt = bt | bits[j]; |
| 1067 | } |
| 1068 | wcnt++; |
| 1069 | p++; |
| 1070 | if (wcnt == rwidth[k]) { |
| 1071 | wcnt = 0; |
| 1072 | break; |
| 1073 | } |
| 1074 | } |
| 1075 | *q++ = bt; |
| 1076 | } |
| 1077 | mfishA[k][2] = XCreateBitmapFromData(Dpy, wid, |
| 1078 | (char *) data, rwidth[k], rheight[k]); |
| 1079 | |
| 1080 | p = (caddrt) xfishRasterA[k]; |
| 1081 | p = p + rwidth[k] - 1; |
| 1082 | q = data; |
| 1083 | wcnt = 0; |
| 1084 | for (i = 0; i < ((rwidth[k] + 7) / 8 * rheight[k]); i++) { |
| 1085 | unsigned char bt = 0x00; |
| 1086 | for (j = 0; j < 8; j++) { |
| 1087 | if (*p != rback[k]) { |
| 1088 | bt = bt | bits[j]; |
| 1089 | } |
| 1090 | wcnt++; |
| 1091 | p--; |
| 1092 | if (wcnt == rwidth[k]) { |
| 1093 | wcnt = 0; |
| 1094 | p = p + (2 * rwidth[k]); |
| 1095 | break; |
| 1096 | } |
| 1097 | } |
| 1098 | *q++ = bt; |
| 1099 | } |
| 1100 | mfishA[k][1] = XCreateBitmapFromData(Dpy, wid, |
| 1101 | (char *) data, rwidth[k], rheight[k]); |
| 1102 | |
| 1103 | p = (caddrt) xfishRasterB[k]; |
| 1104 | q = data; |
| 1105 | wcnt = 0; |
| 1106 | for (i = 0; i < ((rwidth[k] + 7) / 8 * rheight[k]); i++) { |
| 1107 | unsigned char bt = 0x00; |
| 1108 | for (j = 0; j < 8; j++) { |
| 1109 | if (*p != rback[k]) { |
| 1110 | bt = bt | bits[j]; |
| 1111 | } |
| 1112 | wcnt++; |
| 1113 | p++; |
| 1114 | if (wcnt == rwidth[k]) { |
| 1115 | wcnt = 0; |
| 1116 | break; |
| 1117 | } |
| 1118 | } |
| 1119 | *q++ = bt; |
| 1120 | } |
| 1121 | mfishB[k][2] = XCreateBitmapFromData(Dpy, wid, |
| 1122 | (char *) data, rwidth[k], rheight[k]); |
| 1123 | |
| 1124 | p = (caddrt) xfishRasterB[k]; |
| 1125 | p = p + rwidth[k] - 1; |
| 1126 | q = data; |
| 1127 | wcnt = 0; |
| 1128 | for (i = 0; i < ((rwidth[k] + 7) / 8 * rheight[k]); i++) { |
| 1129 | unsigned char bt = 0x00; |
| 1130 | for (j = 0; j < 8; j++) { |
| 1131 | if (*p != rback[k]) { |
| 1132 | bt = bt | bits[j]; |
| 1133 | } |
| 1134 | wcnt++; |
| 1135 | p--; |
| 1136 | if (wcnt == rwidth[k]) { |
| 1137 | wcnt = 0; |
| 1138 | p = p + (2 * rwidth[k]); |
| 1139 | break; |
| 1140 | } |
| 1141 | } |
| 1142 | *q++ = bt; |
| 1143 | } |
| 1144 | mfishB[k][1] = XCreateBitmapFromData(Dpy, wid, |
| 1145 | (char *) data, rwidth[k], rheight[k]); |
| 1146 | |
| 1147 | free((char *) data); |
| 1148 | } |
| 1149 | |
| 1150 | if (DisplayPlanes(Dpy, screen) < 8) { |
| 1151 | |
| 1152 | j = rwidth[k] * rheight[k]; |
| 1153 | x1A = (caddrt) malloc(rwidth[k] * rheight[k]); |
| 1154 | p = (caddrt) xfishRasterA[k]; |
| 1155 | |
| 1156 | |
| 1157 | q = x1A; |
| 1158 | for (i = 0; i < j; i++) { |
| 1159 | *q = cmap[cnt + (int) (*p)]; |
| 1160 | p++; |
| 1161 | q++; |
| 1162 | } |
| 1163 | |
| 1164 | x1B = (caddrt) malloc(rwidth[k] * rheight[k]); |
| 1165 | p = (caddrt) xfishRasterB[k]; |
| 1166 | q = x1B; |
| 1167 | for (i = 0; i < j; i++) { |
| 1168 | *q = cmap[cnt + (int) (*p)]; |
| 1169 | p++; |
| 1170 | q++; |
| 1171 | } |
| 1172 | |
| 1173 | x2A = (caddrt) malloc(rwidth[k] * rheight[k]); |
| 1174 | for (i = 0; i < rheight[k]; i++) { |
| 1175 | p = x1A + i * rwidth[k]; |
| 1176 | q = x2A + (i + 1) * rwidth[k] - 1; |
| 1177 | for (j = 0; j < rwidth[k]; j++) { |
| 1178 | *q-- = *p++; |
| 1179 | } |
| 1180 | } |
| 1181 | |
| 1182 | x2B = (caddrt) malloc(rwidth[k] * rheight[k]); |
| 1183 | for (i = 0; i < rheight[k]; i++) { |
| 1184 | p = x1B + i * rwidth[k]; |
| 1185 | q = x2B + (i + 1) * rwidth[k] - 1; |
| 1186 | for (j = 0; j < rwidth[k]; j++) { |
| 1187 | *q-- = *p++; |
| 1188 | } |
| 1189 | } |
| 1190 | |
| 1191 | xfishA[k][2] = MakeImage(x1A, rwidth[k], rheight[k]); |
| 1192 | xfishA[k][1] = MakeImage(x2A, rwidth[k], rheight[k]); |
| 1193 | xfishB[k][2] = MakeImage(x1B, rwidth[k], rheight[k]); |
| 1194 | xfishB[k][1] = MakeImage(x2B, rwidth[k], rheight[k]); |
| 1195 | |
| 1196 | free((char *) x1A); |
| 1197 | free((char *) x2A); |
| 1198 | free((char *) x1B); |
| 1199 | free((char *) x2B); |
| 1200 | } else { |
| 1201 | i = DisplayPlanes(Dpy, screen); |
| 1202 | |
| 1203 | xfishA[k][2] = |
| 1204 | XGetImage(Dpy, root_window, 0, 0, rwidth[k], rheight[k], 0, ZPixmap); |
| 1205 | |
| 1206 | p = (caddrt) xfishRasterA[k]; |
| 1207 | |
| 1208 | for (j = 0; j < rheight[k]; j++) { |
| 1209 | for (i = 0; i < rwidth[k]; i++) { |
| 1210 | XPutPixel(xfishA[k][2], i, j, cmap[cnt + (int) (*p)]); |
| 1211 | p++; |
| 1212 | } |
| 1213 | } |
| 1214 | |
| 1215 | xfishB[k][2] = |
| 1216 | XGetImage(Dpy, root_window, 0, 0, rwidth[k], rheight[k], 0, ZPixmap); |
| 1217 | |
| 1218 | p = (caddrt) xfishRasterB[k]; |
| 1219 | |
| 1220 | for (j = 0; j < rheight[k]; j++) { |
| 1221 | for (i = 0; i < rwidth[k]; i++) { |
| 1222 | XPutPixel(xfishB[k][2], i, j, cmap[cnt + (int) (*p)]); |
| 1223 | p++; |
| 1224 | } |
| 1225 | } |
| 1226 | |
| 1227 | xfishA[k][1] = |
| 1228 | XGetImage(Dpy, root_window, 0, 0, rwidth[k], rheight[k], 0, ZPixmap); |
| 1229 | |
| 1230 | for (j = 0; j < rheight[k]; j++) { |
| 1231 | for (i = 0; i < rwidth[k]; i++) { |
| 1232 | XPutPixel(xfishA[k][1], i, j, |
| 1233 | XGetPixel(xfishA[k][2], rwidth[k] - i - 1, j)); |
| 1234 | } |
| 1235 | } |
| 1236 | |
| 1237 | xfishB[k][1] = |
| 1238 | XGetImage(Dpy, root_window, 0, 0, rwidth[k], rheight[k], 0, ZPixmap); |
| 1239 | |
| 1240 | for (j = 0; j < rheight[k]; j++) { |
| 1241 | for (i = 0; i < rwidth[k]; i++) { |
| 1242 | XPutPixel(xfishB[k][1], i, j, |
| 1243 | XGetPixel(xfishB[k][2], rwidth[k] - i - 1, j)); |
| 1244 | } |
| 1245 | } |
| 1246 | |
| 1247 | } |
| 1248 | |
| 1249 | |
| 1250 | i = DisplayPlanes(Dpy, screen); |
| 1251 | |
| 1252 | pfishA[k][1] = XCreatePixmap(Dpy, wid, rwidth[k], rheight[k], i); |
| 1253 | pfishA[k][2] = XCreatePixmap(Dpy, wid, rwidth[k], rheight[k], i); |
| 1254 | pfishB[k][1] = XCreatePixmap(Dpy, wid, rwidth[k], rheight[k], i); |
| 1255 | pfishB[k][2] = XCreatePixmap(Dpy, wid, rwidth[k], rheight[k], i); |
| 1256 | |
| 1257 | if (pfishA[k][1]) { |
| 1258 | XPutImage(Dpy, pfishA[k][1], gc, xfishA[k][1], 0, 0, 0, 0, rwidth[k], rheight[k]); |
| 1259 | } |
| 1260 | if (pfishA[k][2]) { |
| 1261 | XPutImage(Dpy, pfishA[k][2], gc, xfishA[k][2], 0, 0, 0, 0, rwidth[k], rheight[k]); |
| 1262 | } |
| 1263 | if (pfishB[k][1]) { |
| 1264 | XPutImage(Dpy, pfishB[k][1], gc, xfishB[k][1], 0, 0, 0, 0, rwidth[k], rheight[k]); |
| 1265 | } |
| 1266 | if (pfishB[k][2]) { |
| 1267 | XPutImage(Dpy, pfishB[k][2], gc, xfishB[k][2], 0, 0, 0, 0, rwidth[k], rheight[k]); |
| 1268 | } |
| 1269 | |
| 1270 | cnt += rcolors[k]; |
| 1271 | } |
| 1272 | |
| 1273 | for (i = 1; i <= 8; i++) { |
| 1274 | xbubbles[i] = XCreateBitmapFromData(Dpy, wid, (char *) xbBits[i], i, i); |
| 1275 | } |
| 1276 | } |
| 1277 | |
| 1278 | |
| 1279 | /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
| 1280 | Toggle secure mode on receipt of signal |
| 1281 | * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ |
| 1282 | #ifdef sgi |
| 1283 | int |
| 1284 | #else |
| 1285 | void |
| 1286 | #endif |
| 1287 | toggle_secure() |
| 1288 | { |
| 1289 | pmode = !pmode; |
| 1290 | if (pmode) |
| 1291 | XLowerWindow(Dpy, wid); |
| 1292 | else |
| 1293 | XRaiseWindow(Dpy, wid); |
| 1294 | XFlush(Dpy); |
| 1295 | #ifdef sgi |
| 1296 | return (1); |
| 1297 | #endif |
| 1298 | } |
| 1299 | |
| 1300 | |
| 1301 | /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
| 1302 | Initialize signal so that SIGUSR1 causes secure mode to toggle. |
| 1303 | * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ |
| 1304 | void |
| 1305 | init_signals() |
| 1306 | { |
| 1307 | int ret; |
| 1308 | #ifdef linux |
| 1309 | signal(SIGUSR1, toggle_secure); |
| 1310 | #else |
| 1311 | #if defined(MOTOROLA) || defined(SCO) |
| 1312 | sigset(SIGUSR1, toggle_secure); |
| 1313 | #else |
| 1314 | struct sigvec vec; |
| 1315 | |
| 1316 | vec.sv_handler = toggle_secure; |
| 1317 | vec.sv_mask = 0; |
| 1318 | vec.sv_onstack = 0; |
| 1319 | |
| 1320 | #ifndef hpux |
| 1321 | ret = sigvec(SIGUSR1, &vec, &vec); |
| 1322 | #if 0 |
| 1323 | if (ret != 0) { |
| 1324 | fprintf(stderr, "sigvec call failed\n"); |
| 1325 | } else { |
| 1326 | fprintf(stderr, "sigvec call OK\n"); |
| 1327 | } |
| 1328 | #endif |
| 1329 | #else |
| 1330 | sigvector(SIGUSR1, &vec, &vec); |
| 1331 | #endif |
| 1332 | #endif /* MOTOROLA */ |
| 1333 | #endif /* LINUX */ |
| 1334 | } |
| 1335 | |
| 1336 | |
| 1337 | set_window_type_desktop(Display *dpy, Window wid) |
| 1338 | { |
| 1339 | Atom _NET_WM_WINDOW_TYPE, _NET_WM_WINDOW_TYPE_DESKTOP; |
| 1340 | |
| 1341 | _NET_WM_WINDOW_TYPE = XInternAtom(dpy, "_NET_WM_WINDOW_TYPE", False); |
| 1342 | _NET_WM_WINDOW_TYPE_DESKTOP = XInternAtom(dpy, "_NET_WM_WINDOW_TYPE_DESKTOP", False); |
| 1343 | |
| 1344 | XChangeProperty(dpy, wid, _NET_WM_WINDOW_TYPE, XA_ATOM, 32, |
| 1345 | PropModeReplace, (unsigned char *) &_NET_WM_WINDOW_TYPE_DESKTOP, 1); |
| 1346 | } |
| 1347 | |
| 1348 | |
| 1349 | /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
| 1350 | Variety of initialization calls, including getting the window up and running. |
| 1351 | * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ |
| 1352 | void |
| 1353 | initialize() |
| 1354 | { |
| 1355 | XWindowAttributes winfo; |
| 1356 | XSetWindowAttributes attr; |
| 1357 | XGCValues vals; |
| 1358 | XSizeHints xsh; |
| 1359 | XImage *pimage; |
| 1360 | int i, size, cnt; |
| 1361 | char *p; |
| 1362 | unsigned char *ndata; |
| 1363 | unsigned char *ptr1, *ptr2; |
| 1364 | |
| 1365 | root_window = VirtualRootWindowOfScreen(DefaultScreenOfDisplay(Dpy)); |
| 1366 | |
| 1367 | XGetWindowAttributes(Dpy, root_window, &winfo); |
| 1368 | width = winfo.width; |
| 1369 | height = winfo.height; |
| 1370 | |
| 1371 | picname[0] = '\0'; |
| 1372 | if ((p = XGetDefault(Dpy, pname, "BubbleLimit")) != NULL) |
| 1373 | blimit = atoi(p); |
| 1374 | if ((p = XGetDefault(Dpy, pname, "ColorLimit")) != NULL) |
| 1375 | climit = atoi(p); |
| 1376 | if ((p = XGetDefault(Dpy, pname, "MedianCutLimit")) != NULL) |
| 1377 | mlimit = atoi(p); |
| 1378 | if ((p = XGetDefault(Dpy, pname, "DoClipping")) != NULL) |
| 1379 | DoClipping = atoi(p); |
| 1380 | if ((p = XGetDefault(Dpy, pname, "DoubleBuffer")) != NULL) |
| 1381 | DoubleBuf = atoi(p); |
| 1382 | if ((p = XGetDefault(Dpy, pname, "Overlap")) != NULL) |
| 1383 | Overlap = atoi(p); |
| 1384 | if ((p = XGetDefault(Dpy, pname, "Color")) != NULL) |
| 1385 | strcpy(cname, p); |
| 1386 | if ((p = XGetDefault(Dpy, pname, "Picture")) != NULL) |
| 1387 | strcpy(picname, p); |
| 1388 | if ((p = XGetDefault(Dpy, pname, "FishLimit")) != NULL) |
| 1389 | flimit = atoi(p); |
| 1390 | if ((p = XGetDefault(Dpy, pname, "IncMult")) != NULL) |
| 1391 | smooth = atof(p); |
| 1392 | if ((p = XGetDefault(Dpy, pname, "Rate")) != NULL) |
| 1393 | rate = atof(p); |
| 1394 | if ((p = XGetDefault(Dpy, pname, "Secure")) != NULL) |
| 1395 | for (i = 0; i < 6; i++) |
| 1396 | if (strcmp(p, yess[i]) == 0) |
| 1397 | pmode = 0; |
| 1398 | |
| 1399 | /* |
| 1400 | * DoubleBuf is only useful if we are doing clipping on our |
| 1401 | * own background picture, otherwise turn it off. |
| 1402 | */ |
| 1403 | if ((DoubleBuf) && ((!DoClipping) || (picname[0] == '\0'))) { |
| 1404 | DoubleBuf = 0; |
| 1405 | } |
| 1406 | |
| 1407 | init_colormap(); |
| 1408 | |
| 1409 | if (picname[0] != '\0') { |
| 1410 | size = Pwidth * Pheight; |
| 1411 | ndata = (unsigned char *) malloc(size); |
| 1412 | ptr1 = Pdata; |
| 1413 | ptr2 = ndata; |
| 1414 | cnt = 1; |
| 1415 | for (i = 0; i < size; i++) { |
| 1416 | *ptr2 = cmap[cnt + (int) (*ptr1)]; |
| 1417 | ptr1++; |
| 1418 | ptr2++; |
| 1419 | } |
| 1420 | pimage = MakeImage(ndata, Pwidth, Pheight); |
| 1421 | free((char *) ndata); |
| 1422 | i = DisplayPlanes(Dpy, screen); |
| 1423 | PicMap = XCreatePixmap(Dpy, root_window, Pwidth, Pheight, i); |
| 1424 | } |
| 1425 | |
| 1426 | if ((DoubleBuf) || (picname[0] != '\0')) { |
| 1427 | i = DisplayPlanes(Dpy, screen); |
| 1428 | PixBuf = XCreatePixmap(Dpy, root_window, 500, 500, i); |
| 1429 | ClipBuf = XCreatePixmap(Dpy, root_window, 500, 500, 1); |
| 1430 | c0gc = XCreateGC(Dpy, ClipBuf, 0, NULL); |
| 1431 | XSetForeground(Dpy, c0gc, (unsigned long) 0); |
| 1432 | XSetFunction(Dpy, c0gc, GXcopy); |
| 1433 | cpgc = XCreateGC(Dpy, ClipBuf, 0, NULL); |
| 1434 | XSetFunction(Dpy, cpgc, GXor); |
| 1435 | } |
| 1436 | |
| 1437 | attr.override_redirect = True; |
| 1438 | attr.background_pixel = cmap[0]; |
| 1439 | |
| 1440 | if (!DoClipping || picname[0] != '\0') { |
| 1441 | wid = XCreateWindow(Dpy, root_window, |
| 1442 | 1, 1, width - 2, height - 2, 0, |
| 1443 | CopyFromParent, CopyFromParent, CopyFromParent, |
| 1444 | CWBackPixel | CWOverrideRedirect, &attr); |
| 1445 | |
| 1446 | if (!wid) |
| 1447 | msgdie("XCreateWindow failed"); |
| 1448 | set_window_type_desktop(Dpy, wid); |
| 1449 | } else { |
| 1450 | wid = root_window; |
| 1451 | XClearArea(Dpy, wid, 0, 0, 0, 0, False); |
| 1452 | } |
| 1453 | |
| 1454 | vals.foreground = vals.background = cmap[0]; |
| 1455 | vals.graphics_exposures = False; |
| 1456 | gc = XCreateGC(Dpy, wid, GCForeground | GCBackground | GCGraphicsExposures, &vals); |
| 1457 | pgc = XCreateGC(Dpy, wid, GCForeground | GCBackground | GCGraphicsExposures, &vals); |
| 1458 | bgc = XCreateGC(Dpy, wid, GCForeground | GCBackground | GCGraphicsExposures, &vals); |
| 1459 | |
| 1460 | for (i = 0; i < NUM_FISH; i++) { |
| 1461 | pfishA[i][0] = 0; |
| 1462 | pfishA[i][1] = 0; |
| 1463 | pfishA[i][2] = 0; |
| 1464 | pfishB[i][0] = 0; |
| 1465 | pfishB[i][1] = 0; |
| 1466 | pfishB[i][2] = 0; |
| 1467 | |
| 1468 | mfishA[i][0] = 0; |
| 1469 | mfishA[i][1] = 0; |
| 1470 | mfishA[i][2] = 0; |
| 1471 | mfishB[i][0] = 0; |
| 1472 | mfishB[i][1] = 0; |
| 1473 | mfishB[i][2] = 0; |
| 1474 | } |
| 1475 | |
| 1476 | init_pixmap(); |
| 1477 | init_signals(); |
| 1478 | |
| 1479 | if (!DoClipping || picname[0] != '\0') { |
| 1480 | XStoreName(Dpy, wid, pname); |
| 1481 | |
| 1482 | xsh.flags = USSize | USPosition | PPosition | PSize; |
| 1483 | xsh.x = xsh.y = 0; |
| 1484 | xsh.width = width; |
| 1485 | xsh.height = height; |
| 1486 | XSetNormalHints(Dpy, wid, &xsh); |
| 1487 | |
| 1488 | if (picname[0] != '\0') { |
| 1489 | XPutImage(Dpy, PicMap, gc, pimage, 0, 0, 0, 0, Pwidth, Pheight); |
| 1490 | XSetWindowBackgroundPixmap(Dpy, wid, PicMap); |
| 1491 | } |
| 1492 | |
| 1493 | XMapWindow(Dpy, wid); |
| 1494 | } |
| 1495 | |
| 1496 | binfo = (bubble *) malloc(blimit * sizeof(bubble)); |
| 1497 | finfo = (fish *) malloc(flimit * sizeof(fish)); |
| 1498 | } |
| 1499 | |
| 1500 | |
| 1501 | /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
| 1502 | Create a new bubble. Placement along the x axis is random, as is the size of |
| 1503 | the bubble. Increment value is determined by speed. |
| 1504 | * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ |
| 1505 | void |
| 1506 | new_bubble(b0) |
| 1507 | bubble *b0; |
| 1508 | { |
| 1509 | register int s; |
| 1510 | register bubble *b = b0; |
| 1511 | |
| 1512 | b->x = width * (rand() / RAND_F_MAX); |
| 1513 | if (Init_B) |
| 1514 | b->y = (height / 16) * (rand() / RAND_I_1_16 + 1) - 1; |
| 1515 | else |
| 1516 | b->y = height - 1; |
| 1517 | b->s = s = 1.0 + rand() / RAND_F_1_8; |
| 1518 | if ((b->i = smooth * height / (float) binc[s]) == 0) |
| 1519 | b->i = 1; |
| 1520 | b->erased = 0; |
| 1521 | putbubble(b, s, bcolor); |
| 1522 | } |
| 1523 | |
| 1524 | /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
| 1525 | Erase old bubbles, move and draw new bubbles. Random left-right factor |
| 1526 | can move bubble one size-unit in either direction. |
| 1527 | * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ |
| 1528 | void |
| 1529 | step_bubbles() |
| 1530 | { |
| 1531 | register int i, j, s; |
| 1532 | register bubble *b; |
| 1533 | |
| 1534 | for (i = 0; i < blimit; i++) { |
| 1535 | b = &binfo[i]; |
| 1536 | s = b->s; |
| 1537 | /* clear */ |
| 1538 | if ((b->y > 0) && (b->erased == 0)) { |
| 1539 | if ((DoClipping) || (picname[0] != '\0')) { |
| 1540 | erasebubble(b, s); |
| 1541 | } else { |
| 1542 | putbubble(b, s, cmap[0]); |
| 1543 | } |
| 1544 | } |
| 1545 | if ((b->y -= b->i) > 0) { |
| 1546 | j = rand(); |
| 1547 | if (j < RAND_I_1_4) { |
| 1548 | b->x -= s; |
| 1549 | } else if (j > RAND_I_3_4) { |
| 1550 | b->x += s; |
| 1551 | } |
| 1552 | putbubble(b, s, bcolor); |
| 1553 | } else { |
| 1554 | if (rand() < RAND_I_1_4) { |
| 1555 | new_bubble(b); |
| 1556 | } |
| 1557 | } |
| 1558 | b->erased = 0; |
| 1559 | } |
| 1560 | } |
| 1561 | |
| 1562 | |
| 1563 | /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
| 1564 | Fish over bubble collision detection. The specified fish is checked against |
| 1565 | all bubbles for overlap. This way we don't try and erase bubbles that are |
| 1566 | already gone. |
| 1567 | * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ |
| 1568 | void |
| 1569 | collide_bubbles(f0, ofx, ofy) |
| 1570 | fish *f0; |
| 1571 | int ofx, ofy; |
| 1572 | { |
| 1573 | int i, delta; |
| 1574 | register fish *f = f0; |
| 1575 | register bubble *b; |
| 1576 | |
| 1577 | for (i = 0; i < blimit; i++) { |
| 1578 | b = &binfo[i]; |
| 1579 | delta = b->x - ofx; |
| 1580 | if ((delta >= 0) && (delta <= (rwidth[f->type] - b->s))) { |
| 1581 | delta = b->y - ofy; |
| 1582 | if ((delta >= 0) && (delta <= (rheight[f->type] - b->s))) { |
| 1583 | b->erased = 1; |
| 1584 | continue; |
| 1585 | } |
| 1586 | } |
| 1587 | delta = b->x - f->x; |
| 1588 | if ((delta >= 0) && (delta <= (rwidth[f->type] - b->s))) { |
| 1589 | delta = b->y - f->y; |
| 1590 | if ((delta >= 0) && (delta <= (rheight[f->type] - b->s))) { |
| 1591 | b->erased = 1; |
| 1592 | continue; |
| 1593 | } |
| 1594 | } |
| 1595 | } |
| 1596 | } |
| 1597 | |
| 1598 | /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
| 1599 | Fish collision detection. The specified fish is checked against all other |
| 1600 | fish for overlap. The xt parameter specifies a x axis multiplier for overlap. |
| 1601 | * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ |
| 1602 | int |
| 1603 | collide_fish(f0, xt) |
| 1604 | fish *f0; |
| 1605 | int xt; |
| 1606 | { |
| 1607 | int i, j; |
| 1608 | register fish *f = f0; |
| 1609 | |
| 1610 | if (Overlap) { |
| 1611 | return (0); |
| 1612 | } |
| 1613 | |
| 1614 | for (i = 0; i < flimit; i++) { |
| 1615 | if (&finfo[i] != f) { |
| 1616 | j = finfo[i].y - f->y; |
| 1617 | if ((j > -rheight[finfo[i].type]) && (j < rheight[f->type])) { |
| 1618 | j = finfo[i].x - f->x; |
| 1619 | if ((j > -xt * rwidth[finfo[i].type]) && (j < xt * rwidth[f->type])) { |
| 1620 | return (1); |
| 1621 | } |
| 1622 | } |
| 1623 | } |
| 1624 | } |
| 1625 | return (0); |
| 1626 | } |
| 1627 | |
| 1628 | |
| 1629 | /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
| 1630 | Create a new fish. Placement along the y axis is random, as is the side |
| 1631 | >from which the fish appears. Direction is determined from side. Increment |
| 1632 | is also random. |
| 1633 | * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ |
| 1634 | void |
| 1635 | new_fish(f0) |
| 1636 | fish *f0; |
| 1637 | { |
| 1638 | int i, collide; |
| 1639 | fish *f = f0; |
| 1640 | |
| 1641 | f->type = rand() % NUM_FISH; |
| 1642 | for (i = 0, collide = 1; (i < 16) && (collide); i++) { |
| 1643 | f->y = (height - rheight[f->type]) * (rand() / RAND_F_MAX); |
| 1644 | if ((f->i = smooth * width / (8.0 * (1.0 + rand() / RAND_F_1_8))) == 0) { |
| 1645 | f->i = 1; |
| 1646 | } |
| 1647 | if (rand() < RAND_I_1_2) { |
| 1648 | f->d = 1; |
| 1649 | f->x = width; |
| 1650 | } else { |
| 1651 | f->d = 2; |
| 1652 | f->x = -rwidth[f->type]; |
| 1653 | } |
| 1654 | collide = collide_fish(f, 2); |
| 1655 | } |
| 1656 | |
| 1657 | if (!collide) { |
| 1658 | putfish(f); |
| 1659 | } else { |
| 1660 | f->d = 0; |
| 1661 | } |
| 1662 | |
| 1663 | f->frame = 0; |
| 1664 | } |
| 1665 | |
| 1666 | |
| 1667 | /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
| 1668 | Move all the fish. Clearing old fish is accomplished by masking only the |
| 1669 | exposed areas of the old fish. Random up-down factor can move fish 1/4 a |
| 1670 | fish height in either direction, if no collisions are caused. |
| 1671 | * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ |
| 1672 | void |
| 1673 | move_fish() |
| 1674 | { |
| 1675 | register int i, j, x, y, ofx, ofy, ofd, done; |
| 1676 | register fish *f; |
| 1677 | |
| 1678 | for (i = 0; i < flimit; i++) { |
| 1679 | f = &finfo[i]; |
| 1680 | if (f->d) { |
| 1681 | ofx = f->x; |
| 1682 | ofy = f->y; |
| 1683 | ofd = f->d; |
| 1684 | |
| 1685 | if (f->d == 1) { |
| 1686 | done = ((f->x -= f->i) < -rwidth[f->type]); |
| 1687 | x = f->x + rwidth[f->type]; |
| 1688 | } else if (f->d == 2) { |
| 1689 | done = ((f->x += f->i) > width); |
| 1690 | x = f->x - f->i; |
| 1691 | } |
| 1692 | |
| 1693 | if (!collide_fish(f, 1)) { |
| 1694 | if (!done) { |
| 1695 | j = rand(); |
| 1696 | if (j < RAND_I_1_4) { |
| 1697 | y = f->i / 4; |
| 1698 | } else if (j > RAND_I_3_4) { |
| 1699 | y = f->i / -4; |
| 1700 | } else { |
| 1701 | y = 0; |
| 1702 | } |
| 1703 | |
| 1704 | if (y) { |
| 1705 | f->y += y; |
| 1706 | if (collide_fish(f, 1)) { |
| 1707 | f->y -= y; |
| 1708 | y = 0; |
| 1709 | } else { |
| 1710 | if (y > 0) { |
| 1711 | j = f->y - y; |
| 1712 | } else { |
| 1713 | j = f->y + rheight[f->type]; |
| 1714 | y *= -1; |
| 1715 | } |
| 1716 | } |
| 1717 | } |
| 1718 | if (DoClipping) { |
| 1719 | movefish(f, ofx, ofy, ofd); |
| 1720 | } else { |
| 1721 | putfish(f); |
| 1722 | XClearArea(Dpy, wid, x, ofy, f->i, rheight[f->type], 0); |
| 1723 | if (y) { |
| 1724 | XClearArea(Dpy, wid, ofx, j, rwidth[f->type], y, 0); |
| 1725 | } |
| 1726 | } |
| 1727 | |
| 1728 | } else { |
| 1729 | XClearArea(Dpy, wid, x, f->y, f->i, rheight[f->type], 0); |
| 1730 | new_fish(f); |
| 1731 | } |
| 1732 | } else { |
| 1733 | if ((f->d = 3 - f->d) == 1) { |
| 1734 | f->x = f->x - 2 * f->i; |
| 1735 | x = f->x + rwidth[f->type]; |
| 1736 | } else { |
| 1737 | f->x = f->x + 2 * f->i; |
| 1738 | x = f->x - f->i; |
| 1739 | } |
| 1740 | if (DoClipping) { |
| 1741 | movefish(f, ofx, ofy, ofd); |
| 1742 | } else { |
| 1743 | putfish(f); |
| 1744 | XClearArea(Dpy, wid, x, f->y, f->i, rheight[f->type], 0); |
| 1745 | } |
| 1746 | } |
| 1747 | if ((!DoClipping) || (picname[0] == '\0')) { |
| 1748 | collide_bubbles(f, ofx, ofy); |
| 1749 | } |
| 1750 | } else { |
| 1751 | new_fish(f); |
| 1752 | } |
| 1753 | } |
| 1754 | } |
| 1755 | |
| 1756 | |
| 1757 | /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
| 1758 | Higher-resolution sleep |
| 1759 | * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ |
| 1760 | void |
| 1761 | high_res_sleep(seconds) |
| 1762 | double seconds; |
| 1763 | { |
| 1764 | struct timeval timeout; |
| 1765 | |
| 1766 | timeout.tv_sec = seconds; |
| 1767 | timeout.tv_usec = (seconds - timeout.tv_sec) * 1000000.0; |
| 1768 | select(0, NULL, NULL, NULL, &timeout); |
| 1769 | } |
| 1770 | |
| 1771 | |
| 1772 | /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
| 1773 | * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ |
| 1774 | int |
| 1775 | main(argc, argv) |
| 1776 | int argc; |
| 1777 | char **argv; |
| 1778 | { |
| 1779 | int i; |
| 1780 | XEvent ev; |
| 1781 | |
| 1782 | parse(argc, argv); |
| 1783 | if ((Dpy = XOpenDisplay(sname)) == 0) |
| 1784 | msgdie("XOpenDisplay failed"); |
| 1785 | screen = DefaultScreen(Dpy); |
| 1786 | |
| 1787 | white = WhitePixel(Dpy, screen); |
| 1788 | black = BlackPixel(Dpy, screen); |
| 1789 | initialize(); |
| 1790 | |
| 1791 | srand((unsigned) getpid()); |
| 1792 | |
| 1793 | Init_B = 1; |
| 1794 | for (i = 0; i < blimit; i++) |
| 1795 | new_bubble(&binfo[i]); |
| 1796 | for (i = 0; i < flimit; i++) { |
| 1797 | finfo[i].x = 0; |
| 1798 | finfo[i].y = 0; |
| 1799 | finfo[i].type = 0; |
| 1800 | } |
| 1801 | for (i = 0; i < flimit; i++) |
| 1802 | new_fish(&finfo[i]); |
| 1803 | if (pmode) |
| 1804 | XLowerWindow(Dpy, wid); |
| 1805 | else |
| 1806 | XRaiseWindow(Dpy, wid); |
| 1807 | XFlush(Dpy); |
| 1808 | |
| 1809 | Init_B = 0; |
| 1810 | |
| 1811 | for (;;) { |
| 1812 | if (XPending(Dpy)) |
| 1813 | XNextEvent(Dpy, &ev); |
| 1814 | |
| 1815 | high_res_sleep(rate); |
| 1816 | |
| 1817 | move_fish(); |
| 1818 | |
| 1819 | step_bubbles(); |
| 1820 | |
| 1821 | if (pmode) |
| 1822 | XLowerWindow(Dpy, wid); |
| 1823 | else |
| 1824 | XRaiseWindow(Dpy, wid); |
| 1825 | } |
| 1826 | |
| 1827 | return 0; |
| 1828 | } |