2 * Copyright (c) 2004-2009 Steve Sundstrom
4 * Permission to use, copy, modify, distribute, and sell this software and its
5 * documentation for any purpose is hereby granted without fee, provided that
6 * the above copyright notice appear in all copies and that both that
7 * copyright notice and this permission notice appear in supporting
8 * documentation. No representations are made about the suitability of this
9 * software for any purpose. It is provided "as is" without express or
13 #include "screenhack.h"
19 /*#include <sys/utsname.h>*/
21 #define DEBUGFILE "/tmp/abstractile.dbg"
23 #define MODE_CREATE 0 /* init, create, then finish sleep */
24 #define MODE_ERASE 1 /* erase, then reset colors */
51 #define TILE_OUTLINE 3
67 const double PI = 3.1415926535;
70 unsigned int x, y, len, obj, color, ndol;
76 unsigned int line, hl, hr, vu, vd, dhl, dhr, dvu, dvd;
79 /* basically the same as global variables, but used to keep them in a bucket
80 and pass them around easier like the original C++ implementation */
85 XWindowAttributes xgwa;
90 struct lineStruct *dline, *eline;
91 struct gridStruct *grid;
92 unsigned int *zlist, *fdol;
94 /* draw, erase, fill, init, line, object, z indexes */
95 unsigned int di, ei, fi, ii, bi, li, eli, oi, zi;
97 unsigned int gridx, gridy, gridn; /* grid size */
98 int lwid, bwid, swid;/* line width, background width, shadow width */
100 int elwid, elpu, egridx, egridy; /* for now */
102 int bnratio; /* ratio of branch lines to new lines */
103 int maxlen; /* maximum length of line */
104 int forcemax; /* make line be max possible length */
105 int olen; /* open length set by findopen */
106 int bln; /* blocking line number set by findopen, -1=edge */
107 /* color variables */
108 int ncolors; /* number of colors for screen */
110 int rco[MAXCOLORS]; /* random ordering of colors for deo */
113 Bool newcols; /* can we create new colormaps with each screen */
115 int dmap, emap; /* pattern by which line draw order is determined */
116 int dvar, evar; /* random number added to .deo to vary */
117 int ddir, edir; /* draw/erase in forward direction or reverse */
118 int lpu; /* lines drawn per update used to adjust speed */
122 /* layered draw variables */
123 int pattern[LAYERS], shape[LAYERS], mix[LAYERS];
124 int csw[LAYERS], wsx[LAYERS], wsy[LAYERS], sec[LAYERS];
125 int cs1[LAYERS], cs2[LAYERS], cs3[LAYERS]; int cs4[LAYERS];
126 int wave[LAYERS], waveh[LAYERS], wavel[LAYERS];
127 int rx1[LAYERS], rx2[LAYERS], rx3[LAYERS];
128 int ry1[LAYERS], ry2[LAYERS], ry3[LAYERS];
130 int mode, sleep, speed, tile, dialog;
131 Bool grid_full, resized;
152 _dist(struct state *st, int x1, int x2, int y1, int y2, int s)
158 return((int)sqrt(xd*xd+yd*yd));
160 return((int)sqrt(xd*xd*st->cs1[0]*2+yd*yd));
162 return((int)sqrt(xd*xd+yd*yd*st->cs2[0]*2));
164 return((int)sqrt(xd*xd*st->cs1[0]/st->cs2[0]+yd*yd*st->cs3[0]/st->cs4[0]));
169 _wave(struct state *st, int x, int h, int l, int wave)
173 case 0: /* cos wave*/
174 return((int)(cos((double)x*PI/l)*h));
175 case 1: /* double wave*/
176 case 2: /* double wave*/
177 return((int)(cos((double)x*PI/l)*h)+(int)(sin((double)x*PI/l/st->cs1[1])*h));
178 case 3: /* zig zag */
179 return(abs((x%(l*2)-l))*h/l);
180 case 4: /* giant zig zag */
181 return(abs((x%(l*4)-l*2))*h*3/l);
182 case 5: /* sawtooth */
184 default: /* no wave */
190 _triangle(struct state *st, int x, int y, int rx, int ry, int t)
194 return(_min(_min(x+y+rx-(st->gridx/2),st->gridx-x+y),(st->gridy-y+(ry/2))*3/2));
196 return(_min(_min(x-rx,y-ry),(rx+ry-x-y)*2/3));
198 return(_min(_min(st->gridx-x-rx,y-ry),(rx+ry-st->gridx+x-y)*2/3));
200 return(_min(_min(x-rx,st->gridy-y-ry),(rx+ry-x-st->gridy+y)*2/3));
202 return(_min(_min(st->gridx-x-rx,st->gridy-y-ry),(rx+ry-st->gridx+x-st->gridy+y)*2/3));
206 _init_zlist(struct state *st)
208 unsigned int tmp, y, z;
210 st->gridx=st->xgwa.width/st->lwid;
211 st->gridy=st->xgwa.height/st->lwid;
212 st->gridn=st->gridx*st->gridy;
214 for (z=0; z<st->gridn; z++) {
215 st->grid[z].line=st->grid[z].hl=st->grid[z].hr=st->grid[z].vu=st->grid[z].vd=st->grid[z].dhl=st->grid[z].dhr=st->grid[z].dvu=st->grid[z].dvd=0;
218 /* rather than pull x,y points randomly and wait to hit final empy cells a
219 list of all points is created and mixed so empty cells do get hit last */
220 for (z=0; z<st->gridn; z++) {
221 y=random()%st->gridn;
223 st->zlist[y]=st->zlist[z];
229 make_color_ramp_rgb (Display *dpy, Colormap cmap,
230 int r1, int g1, int b1, int r2, int g2, int b2,
231 XColor *colors, int *ncolorsP,
232 Bool closed_p, Bool allocate_p, Bool writable_p)
235 double s1, s2, v1, v2;
236 rgb_to_hsv(r1, g1, b1, &h1, &s1, &v1);
237 rgb_to_hsv(r2, g2, b2, &h2, &s2, &v2);
238 make_color_ramp(dpy, cmap, h1, s1, v1, h2, s2, v2,
239 colors, ncolorsP, False, allocate_p, writable_p);
244 _init_colors(struct state *st)
247 int c1, c2, c3, h1, h2, h3;
248 int r1, g1, b1, r2, g2, b2, r3, g3, b3;
249 double s1, s2, s3, v1, v2, v3;
250 XColor tmp_col1[16], tmp_col2[16], tmp_col3[16];
252 unsigned short basecol[BASECOLORS][3]={
253 /* 0 dgray */ {0x3333,0x3333,0x3333},
254 /* 1 dbrown */ {0x6666,0x3333,0x0000},
255 /* 2 dred */ {0x9999,0x0000,0x0000},
256 /* 3 orange */ {0xFFFF,0x6666,0x0000},
257 /* 4 gold */ {0xFFFF,0xCCCC,0x0000},
258 /* 5 olive */ {0x6666,0x6666,0x0000},
259 /* 6 ivy */ {0x0000,0x6666,0x0000},
260 /* 7 dgreen */ {0x0000,0x9999,0x0000},
261 /* 8 bluegray */ {0x3333,0x6666,0x6666},
262 /* 9 dblue */ {0x0000,0x0000,0x9999},
263 /* 10 blue */ {0x3333,0x3333,0xFFFF},
264 /* 11 dpurple */ {0x6666,0x0000,0xCCCC},
265 /* 12 purple */ {0x6666,0x3333,0xFFFF},
266 /* 13 violet */ {0x9999,0x3333,0x9999},
267 /* 14 magenta */ {0xCCCC,0x3333,0xCCCC},
269 /* 15 gray */ {0x3333,0x3333,0x3333},
270 /* 16 brown */ {0x9999,0x6666,0x3333},
271 /* 17 tan */ {0xCCCC,0x9999,0x3333},
272 /* 18 red */ {0xFFFF,0x0000,0x0000},
273 /* 19 lorange */ {0xFFFF,0x9999,0x0000},
274 /* 20 yellow */ {0xFFFF,0xFFFF,0x0000},
275 /* 21 lolive */ {0x9999,0x9999,0x0000},
276 /* 22 green */ {0x3333,0xCCCC,0x0000},
277 /* 23 lgreen */ {0x3333,0xFFFF,0x3333},
278 /* 24 cyan */ {0x0000,0xCCCC,0xCCCC},
279 /* 25 sky */ {0x3333,0xFFFF,0xFFFF},
280 /* 26 marine */ {0x3333,0x6666,0xFFFF},
281 /* 27 lblue */ {0x3333,0xCCCC,0xFFFF},
282 /* 28 lpurple */ {0x9999,0x9999,0xFFFF},
283 /* 29 pink */ {0xFFFF,0x9999,0xFFFF}};
286 st->shades = (st->d3d==D3D_TILED) ? 5 : st->lwid/2+1;
287 st->ncolors=4+random()%4;
288 if (st->cmap>0) { /* tint the basecolors a bit */
289 for (c1=0; c1<BASECOLORS; c1++)
290 for (c2=0; c2<2; c2++)
291 if (!basecol[c1][c2]) {
292 basecol[c1][c2]+=random()%16000;
293 } else if (basecol[c1][c2]==0xFFFF) {
294 basecol[c1][c2]-=random()%16000;
296 basecol[c1][c2]-=8000;
297 basecol[c1][c2]+=random()%16000;
302 for (c1=0; c1<st->ncolors; c1++)
303 col[c1]=random()%BASECOLORS;
306 for (c1=0; c1<st->ncolors; c1++)
309 case 2: /* semi consecutive darks */
311 for (c1=1; c1<st->ncolors; c1++)
312 col[c1]=(col[c1-1]+1+random()%2)%15;
314 case 3: /* consecutive darks */
315 col[0]=random()%(15-st->ncolors);
316 for (c1=1; c1<st->ncolors; c1++)
320 for (c1=0; c1<st->ncolors; c1++) {
321 /* adjust colors already set */
322 for (h1=c1*st->shades-1; h1>=0; h1--)
323 st->colors[h1+st->shades]=st->colors[h1];
324 make_color_ramp_rgb(st->display, st->xgwa.colormap,
325 basecol[col[c1]][0], basecol[col[c1]][1], basecol[col[c1]][2],
326 0xFFFF, 0xFFFF, 0xFFFF, st->colors, &st->shades,
333 if (st->cmap%2) { /* basecolors */
336 c2=(c1+3+(random()%5))%15;
337 c3=(c2+3+(random()%5))%15;
339 c1=random()%BASECOLORS;
340 c2=(c1+5+(random()%10))%BASECOLORS;
341 c3=(c2+5+(random()%10))%BASECOLORS;
352 } else { /* random rgb's */
356 r2=(r1+16384+random()%32768)%65535;
357 g2=(g1+16384+random()%32768)%65535;
358 b2=(b1+16384+random()%32768)%65535;
359 r3=(r2+16384+random()%32768)%65535;
360 g3=(g2+16384+random()%32768)%65535;
361 b3=(b2+16384+random()%32768)%65535;
364 case 0: /* make_color_ramp color->color */
366 case 2: /* make_color_ramp color->white */
368 st->ncolors=5+random()%5;
371 make_color_ramp_rgb(st->display, st->xgwa.colormap,
372 r1, g1, b1, r2, g2, b2,
373 st->colors, &st->ncolors, random()%2, True, False);
375 case 4: /* 3 color make_color_loop */
379 st->ncolors=8+random()%12;
380 rgb_to_hsv(r1, g1, b1, &h1, &s1, &v1);
381 rgb_to_hsv(r2, g2, b2, &h2, &s2, &v2);
382 rgb_to_hsv(r3, g3, b3, &h3, &s3, &v3);
384 make_color_loop(st->display, st->xgwa.colormap,
385 h1, s1, v1, h2, s2, v2, h3, s3, v3,
386 st->colors, &st->ncolors, True, False);
388 case 8: /* random smooth */
390 st->ncolors=(random()%4)*6+12;
391 make_smooth_colormap (st->display, st->xgwa.visual,
392 st->xgwa.colormap, st->colors, &st->ncolors,
395 case 10: /* rainbow */
396 st->ncolors=(random()%4)*6+12;
397 make_uniform_colormap (st->display, st->xgwa.visual,
398 st->xgwa.colormap, st->colors, &st->ncolors,
401 case 11: /* dark to light blend */
406 make_color_ramp_rgb(st->display, st->xgwa.colormap,
407 r1, g1, b1, 0xFFFF, 0xFFFF, 0xFFFF,
408 tmp_col1, &st->ncolors, False, True, False);
409 make_color_ramp_rgb(st->display, st->xgwa.colormap,
410 r2, g2, b2, 0xFFFF, 0xFFFF, 0xFFFF,
411 tmp_col2, &st->ncolors, False, True, False);
413 for(c1=0; c1<=4; c1++) {
414 st->colors[c1*2]=tmp_col1[c1];
415 st->colors[c1*2+1]=tmp_col2[c1];
419 make_color_ramp_rgb(st->display, st->xgwa.colormap,
420 r3, g3, b3, 0xFFFF, 0xFFFF, 0xFFFF,
421 tmp_col3, &st->ncolors, False, True, False);
422 for(c1=0; c1<=4; c1++) {
423 st->colors[c1*3]=tmp_col1[c1];
424 st->colors[c1*3+1]=tmp_col2[c1];
425 st->colors[c1*3+2]=tmp_col3[c1];
430 default: /* random */
431 st->ncolors=(random()%4)*6+12;
432 make_random_colormap (st->display, st->xgwa.visual,
433 st->xgwa.colormap, st->colors, &st->ncolors,
434 False, True, False, True);
438 /* set random color order for drawing and erasing */
439 for (c1=0; c1<MAXCOLORS; c1++)
441 for (c1=0; c1<MAXCOLORS; c1++) {
442 c3=random()%MAXCOLORS;
444 st->rco[c1]=st->rco[c3];
449 static int _comparedeo(const void *i, const void *j)
451 struct lineStruct *h1, *h2;
453 h1=(struct lineStruct *)i;
454 h2=(struct lineStruct *)j;
455 if (h1->deo > h2->deo)
457 if (h1->deo < h2->deo)
463 _hv(struct state *st, int x, int y, int d1, int d2, int pn, Bool de)
469 v1 = (de) ? st->egridx-x : st->gridx-x;
478 v1 = (de) ? st->egridy-y : st->gridy-y;
483 v2 = (de) ? st->egridx-x : st->gridx-x;
492 v2 = (de) ? st->egridy-y : st->gridy-y;
495 r = (de) ? (st->dline[st->li].hv) ? (v1+10000)*pn : (v2+10000)*-pn :
496 (st->eline[st->li].hv) ? (v1+10000)*pn : (v2+10000)*-pn;
501 _getdeo(struct state *st, int x, int y, int map, int de)
505 case 0: /* horizontal one side */
507 case 1: /* vertical one side */
509 case 2: /* horizontal two side */
510 return(_min(x,st->gridx-x)+1);
511 case 3: /* vertical two side */
512 return(_min(y,st->gridy-y)+1);
514 return(_max(abs(x-st->rx3[de]),abs(y-st->ry3[de]))+1);
515 case 5: /* two squares */
516 return(_min(_max(abs(x-(st->rx3[de]/2)),abs(y-st->ry3[de])),_max(abs(x-(st->gridx-(st->rx2[de]/2))),abs(y-st->ry2[de])))+1);
517 case 6: /* horizontal rectangle */
518 return(_max(abs(x-st->rx3[de]),abs(y-(st->ry3[de]))*st->cs1[de])+1);
519 case 7: /* vertical rectangle */
520 return(_max(abs(x-st->rx3[de])*st->cs1[de],abs(y-(st->ry3[de])))+1);
521 case 8: /* + cross */
522 return(_min(abs(x-st->rx3[de]),abs(y-(st->ry3[de])))+1);
523 case 9: /* diagonal */
525 case 10: /* opposite diagonal */
526 return((x*3/4+st->gridy-y)+1);
527 case 11: /* diamond */
528 return((abs(x-st->rx3[de])+abs(y-st->ry3[de]))/2+1);
529 case 12: /* two diamonds */
530 return(_min(abs(x-(st->rx3[de]/2))+abs(y-st->ry3[de]),abs(x-(st->gridx-(st->rx2[de]/2)))+abs(y-st->ry2[de]))/2+1);
531 case 13: /* circle */
532 return(_dist(st,x,st->rx3[de],y,st->ry3[de],0)+1);
533 case 14: /* horizontal ellipse */
534 return(_dist(st,x,st->rx3[de],y,st->ry3[de],1)+1);
535 case 15: /* vertical ellipse */
536 return(_dist(st,x,st->rx3[de],y,st->ry3[de],2)+1);
537 case 16: /* two circles */
538 return(_min(_dist(st,x,st->rx3[de]/2,y,st->ry3[de],0),_dist(st,x,st->gridx-(st->rx2[de]/2),y,st->ry2[de],0))+1);
539 case 17: /* horizontal straight wave */
540 return(x+_wave(st,st->gridy+y,st->csw[0]*st->cs1[0],st->csw[0]*st->cs2[0],st->wave[de]));
541 case 18: /* vertical straight wave */
542 return(y+_wave(st,st->gridx+x,st->csw[0]*st->cs1[0],st->csw[0]*st->cs2[0],st->wave[de]));
543 case 19: /* horizontal wavey wave */
544 return(x+_wave(st,st->gridy+y+((x/5)*st->edir),st->csw[de]*st->cs1[de],st->csw[de]*st->cs2[de],st->wave[de])+1);
545 case 20: /* vertical wavey wave */
546 return(y+_wave(st,st->gridx+x+((y/5)*st->edir),st->csw[de]*st->cs1[de],st->csw[de]*st->cs2[de],st->wave[de])+1);
547 /* no d3d for 21,22 */
548 case 21: /* simultaneous directional */
549 return(_hv(st,x,y,st->cs1[0]%2,st->cs2[0]%2,1,de));
550 case 22: /* reverse directional */
551 return(_hv(st,x,y,st->cs1[0]%2,st->cs2[0]%2,-1,de));
552 case 23: /* length */
554 return(st->dline[st->li].len*1000+random()%5000);
556 return(st->eline[st->li].len*1000+random()%5000);
557 case 24: /* object */
562 return(st->dline[st->li].obj*100);
564 return(st->eline[st->li].obj*100);
566 cr = (de) ? st->dline[st->li].color : st->eline[st->li].color;
567 if (map<34) cr=st->rco[cr];
568 if ((map%6<4) || (de)) { /* by color */
571 } else if (map%6==4) { /* by color horizontaly */
573 cr+=(x+random()%(st->gridx/2));
574 } else { /* by color vertically */
576 cr+=(y+random()%(st->gridy/2));
584 _init_screen(struct state *st)
587 struct lineStruct *tmp;
589 /* malloc memory in case of resize */
591 st->max_wxh=st->xgwa.width*st->xgwa.height;
604 st->narray = (st->xgwa.width+1)*(st->xgwa.height+1)/4+1;
605 st->dline = calloc(st->narray, sizeof(struct lineStruct));
606 st->eline = calloc(st->narray, sizeof(struct lineStruct));
607 st->grid = calloc(st->narray, sizeof(struct gridStruct));
608 st->zlist = calloc(st->narray, sizeof(unsigned int));
609 st->fdol = calloc(st->narray, sizeof(unsigned int));
610 st->odi = calloc(st->narray, sizeof(Bool));
611 if ((st->dline == NULL) || (st->eline == NULL) ||
612 (st->grid == NULL) || (st->zlist == NULL) ||
613 (st->fdol == NULL) || (st->odi == NULL)) {
614 fprintf(stderr, "not enough memory\n");
617 st->dialog = (st->xgwa.width<500) ? 1 : 0;
621 /* swap st->dline and st->eline pointers to resort and erase */
628 st->egridx=st->gridx;
629 st->egridy=st->gridy;
631 /* create new erase order */
632 for (st->li=1; st->li<=st->eli; st->li++)
633 st->eline[st->li].deo=(_getdeo(st,st->eline[st->li].x,st->eline[st->li].y,st->emap,0) + (random()%st->evar) + (random()%st->evar))*st->edir;
634 qsort(st->eline, st->eli+1, sizeof(struct lineStruct), _comparedeo);
638 /* clear arrays and other counters */
639 st->di=st->ei=st->fi=st->li=st->oi=st->zi=0;
641 /* li starts from 1 */
642 st->dline[0].x=st->dline[0].y=st->dline[0].len=0;
643 /* to keep it first after sorting so di is never null */
644 st->dline[0].deo=-999999999;
646 /* set random screen variables */
647 st->lwid = (st->ii==1) ? 3 : 2+((random()%6)%4);
648 st->d3d = ((st->tile==TILE_FLAT) || (st->tile==TILE_THIN) ||
649 (st->tile==TILE_OUTLINE)) ? D3D_NONE :
650 (st->tile==TILE_BLOCK) ? D3D_BLOCK :
651 (st->tile==TILE_NEON) ? D3D_NEON :
652 (st->tile==TILE_TILED) ? D3D_TILED :
653 /* force TILE_D3D on first screen to properly load all shades */
654 ((st->ii==1) && (!st->newcols)) ? D3D_TILED : (random()%5)%4;
655 /* st->d3d=D3D_BLOCK; st->lwid=2; */
656 st->outline = (st->tile==TILE_OUTLINE) ? 1 :
657 ((st->tile!=TILE_RANDOM) || (random()%5)) ? 0 : 1;
658 st->round = (st->d3d==D3D_NEON) ? 1 :
659 ((st->d3d==D3D_BLOCK) || (st->outline) || (random()%6)) ? 0 : 1;
660 if ((st->d3d) || (st->outline) || (st->round))
662 if ((!st->d3d) && (!st->round) && (!st->outline) && (st->lwid>3))
664 if (st->d3d==D3D_TILED)
666 if (st->tile==TILE_THIN)
671 st->maxlen=(st->lwid>6) ? 2+(random()%4) :
672 (st->lwid>4) ? 2+(random()%8)%6 :
673 (st->lwid>2) ? 2+(random()%12)%8 : 2+(random()%15)%10;
674 st->bnratio = 4+(random()%4)+(random()%4);
675 st->forcemax = (random()%6) ? 0 : 1;
677 if ((st->ii==1) || (st->newcols))
680 st->dmap = (st->emap+5+(random()%5))%DRAWORDERS;
682 st->dmap=20+random()%20;
684 st->dvar = (st->dmap>22) ? 100 : 10+(st->csw[0]*(random()%5));
685 st->ddir= (random()%2) ? 1 : -1;
687 st->emap = (st->dmap+10+(random()%10))%20;
688 st->evar = (st->emap>22) ? 100 : 10+(st->csw[0]*(random()%5));
689 st->edir= (random()%2) ? 1 : -1;
691 st->layers= (random()%2) ? 2 : (random()%2) ? 1 : (random()%2) ? 3 : 4;
692 st->cmap=(st->cmap+5+(random()%10))%COLORMAPS;
694 for (x=0; x<LAYERS; x++) {
695 st->pattern[x]=random()%PATTERNS;
696 st->shape[x]=random()%SHAPES;
697 st->mix[x]=random()%20;
698 nstr = (st->lwid==2) ? 20+random()%12 :
699 (st->lwid==3) ? 16+random()%8 :
700 (st->lwid==4) ? 12+random()%6 :
701 (st->lwid==5) ? 10+random()%5 :
702 (st->lwid==6) ? 8+random()%4 :
704 st->csw[x] = _max(5,st->gridy/nstr);
705 st->wsx[x] = (st->wsx[x]+3+(random()%3))%STRETCHES;
706 st->wsy[x] = (st->wsy[x]+3+(random()%3))%STRETCHES;
707 st->sec[x] = random()%5;
708 if ((!st->dialog) && (st->sec[x]<2)) st->csw[x]/=2;
709 st->cs1[x] = (st->dialog) ? 1+random()%3 : 2+random()%5;
710 st->cs2[x] = (st->dialog) ? 1+random()%3 : 2+random()%5;
711 st->cs3[x] = (st->dialog) ? 1+random()%3 : 2+random()%5;
712 st->cs4[x] = (st->dialog) ? 1+random()%3 : 2+random()%5;
713 st->wave[x]=random()%WAVES;
714 st->wavel[x]=st->csw[x]*(2+random()%6);
715 st->waveh[x]=st->csw[x]*(1+random()%3);
716 st->rx1[x]=(st->gridx/10+random()%(st->gridx*8/10));
717 st->ry1[x]=(st->gridy/10+random()%(st->gridy*8/10));
718 st->rx2[x]=(st->gridx*2/10+random()%(st->gridx*6/10));
719 st->ry2[x]=(st->gridy*2/10+random()%(st->gridy*6/10));
720 st->rx3[x]=(st->gridx*3/10+random()%(st->gridx*4/10));
721 st->ry3[x]=(st->gridy*3/10+random()%(st->gridy*4/10));
726 _shape(struct state *st, int x, int y, int rx, int ry, int n)
728 switch(st->shape[n]) {
729 case 0: /* square/rectangle */
732 return(1+_max(abs(x-rx)*st->cs1[n]/st->cs2[n],abs(y-ry)*st->cs3[n]/st->cs4[n]));
733 case 3: /* diamond */
735 return(1+(abs(x-rx)*st->cs1[n]/st->cs2[n]+abs(y-ry)*st->cs3[n]/st->cs4[n]));
736 case 5: /* 8 point star */
737 return(1+_min(_max(abs(x-rx),abs(y-ry))*3/2,abs(x-rx)+abs(y-ry)));
738 case 6: /* circle/oval */
741 return(1+_dist(st,x,rx,y,ry,st->cs1[n]));
742 case 9: /* black hole circle */
743 return(1+(st->gridx*st->gridy/(1+(_dist(st,x,rx,y,ry,st->cs2[n])))));
745 return(1+_min(abs(x-rx)*st->gridx/(abs(y-ry)+1),abs(y-ry)*st->gridx/(abs(x-rx)+1)));
746 case 11: /* 2 circles+inverted circle */
747 return(1+(_dist(st,x,rx,y,ry,st->cs1[n])*_dist(st,x,(rx*3)%st->gridx,y,(ry*5)%st->gridy,st->cs1[n])/(1+_dist(st,x,(rx*4)%st->gridx,y,(ry*7)%st->gridy,st->cs1[n]))));
749 return(1+(int)sqrt(abs((x-rx)*(y-ry))));
750 case 13: /* centered ellipse */
751 return(1+_dist(st,x,rx,y,ry,0)+_dist(st,x,st->gridx-rx,y,st->gridy-ry,0));
752 default: /* triangle */
753 return(1+_triangle(st,x,y,rx,ry,st->cs4[n]));
755 return(1+_triangle(st,x,y,rx,ry,st->cs4[n]));
759 _pattern(struct state *st, int x, int y, int n)
768 x+=(st->gridy-y)/(1+st->cs4[n]);
771 x+=_wave(st,y,st->gridx/(1+st->cs1[n]),st->gridy,0);
774 x+=_wave(st,st->gridy-y,st->gridy/(1+st->cs1[n]),st->gridy,0);
776 case 4: /* U curves */
777 x+=_wave(st,y,st->cs1[n]*st->csw[n]/2,st->gridy*2/PI,0);
780 x-=_wave(st,y,st->cs1[n]*st->csw[n]/2,st->gridy*2/PI,0);
785 y+=ox/(1+st->cs1[n]);
788 y+=(st->gridx-ox)/(1+st->cs1[n]);
791 y+=_wave(st,ox,st->gridx/(1+st->cs1[n]),st->gridx,0);
794 y+=_wave(st,st->gridx-ox,st->gridx/(1+st->cs1[n]),st->gridx,0);
796 case 4: /* U curves */
797 y+=_wave(st,ox,st->cs1[n]*st->csw[n]/2,st->gridy*2/PI,0);
800 y-=_wave(st,ox,st->cs1[n]*st->csw[n]/2,st->gridy*2/PI,0);
803 switch(st->pattern[n]) {
804 case 0: /* horizontal stripes */
807 case 1: /* vertical stripes */
810 case 2: /* diagonal stripes */
811 v=(x+(y*st->cs1[n]/st->cs2[n]));
813 case 3: /* reverse diagonal stripes */
814 v=(x-(y*st->cs1[n]/st->cs2[n]));
816 case 4: /* checkerboard */
817 v=(y/st->csw[n]*3+x/st->csw[n])*st->csw[n];
819 case 5: /* diagonal checkerboard */
820 v=((x+y)/2/st->csw[n]+(x+st->gridy-y)/2/st->csw[n]*3)*st->csw[n];
822 case 6: /* + cross */
823 v=st->gridx+(_min(abs(x-st->rx3[n]),abs(y-st->ry3[n]))*2);
825 case 7: /* double + cross */
826 v=_min(_min(abs(x-st->rx2[n]),abs(y-st->ry2[n])),_min(abs(x-st->rx1[n]),abs(y-st->ry1[n])))*2;
828 case 8: /* X cross */
829 v=st->gridx+(_min(abs(x-st->rx3[n])*st->cs1[n]/st->cs2[n]+abs(y-st->ry2[n])*st->cs3[n]/st->cs4[n],abs(x-st->rx3[n])*st->cs1[n]/st->cs2[n]-abs(y-st->ry3[n])*st->cs3[n]/st->cs4[n])*2);
831 case 9: /* double X cross */
832 v=_min(_min(abs(x-st->rx2[n])+abs(y-st->ry2[n]),abs(x-st->rx2[n])-abs(y-st->ry2[n])),_min(abs(x-st->rx1[n])+abs(y-st->ry1[n]),abs(x-st->rx1[n])-abs(y-st->ry1[n])))*2;
834 case 10: /* horizontal stripes/waves */
835 v=st->gridy+(y+_wave(st,x,st->waveh[n],st->wavel[n],st->wave[n]));
837 case 11: /* vertical stripes/waves */
838 v=st->gridx+(x+_wave(st,y,st->waveh[n],st->wavel[n],st->wave[n]));
840 case 12: /* diagonal stripes/waves */
841 v=st->gridx+(x+(y*st->cs1[n]/st->cs2[n])+_wave(st,x,st->waveh[n],st->wavel[n],st->wave[n]));
843 case 13: /* diagonal stripes/waves */
844 v=st->gridx+(x-(y*st->cs1[n]/st->cs2[n])+_wave(st,y,st->waveh[n],st->wavel[n],st->wave[n]));
846 case 14: /* horizontal spikey waves */
847 v=y+(st->csw[n]*st->cs4[n]/st->cs3[n])+_wave(st,x+((y/st->cs3[n])*st->edir),st->csw[n]/2*st->cs1[n]/st->cs2[n],st->csw[n]/2*st->cs2[n]/st->cs1[n],st->wave[n]);
849 case 15: /* vertical spikey waves */
850 v=x+(st->csw[n]*st->cs1[n]/st->cs2[n])+_wave(st,y+((x/st->cs3[n])*st->edir),st->csw[n]/2*st->cs1[n]/st->cs2[n],st->csw[n]/2*st->cs3[n]/st->cs4[n],st->wave[n]);
852 case 16: /* big slanted hwaves */
853 v=st->gridy-y-(x*st->cs1[n]/st->cs3[n])+(st->csw[n]*st->cs1[n]*st->cs2[n]) +_wave(st,x,st->csw[n]/3*st->cs1[n]*st->cs2[n],st->csw[n]/3*st->cs3[n]*st->cs2[n],st->wave[n]);
855 case 17: /* big slanted vwaves */
856 v=x-(y*st->cs1[n]/st->cs3[n])+(st->csw[n]*st->cs1[n]*st->cs2[n]) +_wave(st,y, st->csw[n]/3*st->cs1[n]*st->cs2[n], st->csw[n]/3*st->cs3[n]*st->cs2[n], st->wave[n]);
858 case 18: /* double hwave */
859 v=y+(y+st->csw[n]*st->cs3[n])+_wave(st,x,st->csw[n]/3*st->cs3[n],st->csw[n]/3*st->cs2[n],st->wave[n])+_wave(st,x,st->csw[n]/3*st->cs4[n],st->csw[n]/3*st->cs1[n]*3/2,st->wave[n]);
861 case 19: /* double vwave */
862 v=x+(x+st->csw[n]*st->cs1[n])+_wave(st,y,st->csw[n]/3*st->cs1[n],st->csw[n]/3*st->cs3[n],st->wave[n])+_wave(st,y,st->csw[n]/3*st->cs2[n],st->csw[n]/3*st->cs4[n]*3/2,st->wave[n]);
864 case 20: /* one shape */
867 v=_shape(st,x, y, st->rx3[n], st->ry3[n], n);
869 case 23: /* two shapes */
872 v=_min(_shape(st,x, y, st->rx1[n], st->ry1[n], n),_shape(st,x, y, st->rx2[n], st->ry2[n], n));
874 case 26: /* two shapes opposites */
876 v=_min(_shape(st,x, y, st->rx2[n], st->ry2[n], n),_shape(st,x, y, st->gridx-st->rx2[n], st->gridy-st->rx2[n], n));
878 case 28: /* two shape checkerboard */
880 v=((_shape(st,x, y, st->rx1[n], st->ry1[n], n)/st->csw[n])+(_shape(st,x, y, st->rx2[n], st->ry2[n], n)/st->csw[n]))*st->csw[n];
882 case 30: /* two shape blob */
884 v=(_shape(st,x, y, st->rx1[n], st->ry1[n], n)+_shape(st,x, y, st->rx2[n], st->ry2[n], n))/2;
886 case 32: /* inverted two shape blob */
888 v=(_shape(st,x, y, st->rx1[n], st->ry1[n], n)+_shape(st,st->gridx-x, st->gridy-y, st->rx1[n], st->ry1[n], n))/2;
890 case 34: /* three shapes */
892 v=_min(_shape(st,x, y, st->rx3[n], st->ry3[n], n),_min(_shape(st,x, y, st->rx1[n], st->ry1[n], n),_shape(st,x, y, st->rx2[n], st->ry2[n], n)));
894 case 36: /* three shape blob */
896 v=(_shape(st,x, y, st->rx1[n], st->ry1[n], n)+_shape(st,x, y, st->rx2[n], st->ry2[n], n)+_shape(st,x, y, st->rx3[n], st->ry3[n], n))/3;
898 case 38: /* 4 shapes */
899 v=(_min(_shape(st,x, y, st->rx2[n], st->ry2[n], n),_shape(st,x, y, st->gridx-st->rx2[n], st->gridy-st->ry2[n], n)),_min(_shape(st,x, y, st->gridx-st->rx2[n], st->ry2[n], n),_shape(st,x, y, st->rx2[n], st->gridy-st->ry2[n], n)));
901 case 39: /* four rainbows */
902 v=(_min(_shape(st,x, y, st->gridx-st->rx2[n]/2, st->csw[n], n),_shape(st,x, y, st->csw[n], st->ry2[n]/2, n)),_min(_shape(st,x, y, st->rx2[n]/2, st->gridy-st->csw[n], n),_shape(st,x, y, st->gridx-st->csw[n], st->gridy-(st->ry2[n]/2), n)));
905 /* stretch or contract stripe */
908 v=(int)sqrt((int)sqrt(abs(v)*st->gridx)*st->gridx);
911 v=((int)pow(v,2)/st->gridx);
918 _getcolor(struct state *st, int x, int y)
922 for (n=0; n<st->layers; n++) {
923 cv[n]=_pattern(st,x,y,n);
924 /* first wave/shape */
925 cv[0] = (!n) ? cv[0]/st->csw[0] :
927 (st->mix[n]<5) ? (cv[0]*st->csw[0]+cv[n])/st->csw[n] :
928 /* checkerboard+ncol/2 */
929 (st->mix[n]<12) ? cv[0]+(cv[n]/st->csw[n]*st->ncolors/2) :
931 (st->mix[n]<16) ? cv[0]+(cv[n]/st->csw[n]) :
933 (st->mix[n]<18) ? cv[0]-(cv[n]/st->csw[n]) :
934 /* r to l morph mix */
935 (st->mix[n]==18) ? ((cv[0]*x)+(cv[n]*(st->gridx-x)/st->csw[n]))/st->gridx :
936 /* u to d morph mix */
937 ((cv[0]*y)+(cv[n]*(st->gridy-y)/st->csw[n]))/st->gridy;
942 /* return value=line direction
943 st->olen=open space to edge or next blocking line
944 st->bln=blocking line number or -1 if edge blocks */
946 _findopen(struct state *st, int x, int y, int z)
948 int dir, od[4], no=0;
950 if (((st->grid[z].hl) || (st->grid[z].hr)) &&
951 ((st->grid[z].vu) || (st->grid[z].vd)))
953 if ((z>st->gridx) && (!st->grid[z].hl) && (!st->grid[z].hr) &&
954 (!st->grid[z-st->gridx].line)) {
958 if ((z<st->gridn-st->gridx) && (!st->grid[z].hl) &&
959 (!st->grid[z].hr) && (!st->grid[z+st->gridx].line)) {
963 if ((x) && (!st->grid[z].hl) && (!st->grid[z].hr) &&
964 (!st->grid[z-1].line)) {
968 if (((z+1)%st->gridx) && (!st->grid[z].hl) && (!st->grid[z].hr) &&
969 (!st->grid[z+1].line)) {
977 while ((st->olen<=st->maxlen) && (!st->bln)) {
980 st->bln = (y-st->olen<0) ? -1 :
981 st->grid[z-(st->olen*st->gridx)].line;
983 st->bln = (y+st->olen>=st->gridy) ? -1 :
984 st->grid[z+(st->olen*st->gridx)].line;
986 st->bln = (x-st->olen<0) ? -1 :
987 st->grid[z-st->olen].line;
989 st->bln = (x+st->olen>=st->gridx) ? -1 :
990 st->grid[z+st->olen].line;
997 _fillgrid(struct state *st)
999 unsigned int gridc, n, add;
1001 gridc=st->gridx*st->dline[st->li].y+st->dline[st->li].x;
1002 add = (st->dline[st->li].hv) ? 1 : st->gridx;
1003 for (n=0; n<=st->dline[st->li].len; n++) {
1006 if (!st->grid[gridc].line) {
1008 st->grid[gridc].line=st->li;
1010 if (st->dline[st->li].hv) {
1012 st->grid[gridc].hr=st->li;
1013 if (n<st->dline[st->li].len)
1014 st->grid[gridc].hl=st->li;
1017 st->grid[gridc].vd=st->li;
1018 if (n<st->dline[st->li].len)
1019 st->grid[gridc].vu=st->li;
1021 if (st->fi>=st->gridn) {
1029 _newline(struct state *st)
1031 int bl, bz, dir, lt, x, y, z;
1034 z=st->zlist[st->zi];
1038 dir=_findopen(st,x,y,z);
1040 if (!st->grid[z].line) {
1041 /* this is an empty space, make a new line unless nothing is open around it */
1042 if (dir==DIR_NONE) {
1043 /* nothing is open, force a len 1 branch in any direction */
1045 while ((dir==DIR_NONE) ||
1046 ((dir==DIR_UP) && (!y)) ||
1047 ((dir==DIR_DOWN) && (y+1==st->gridy)) ||
1048 ((dir==DIR_LEFT) && (!x)) ||
1049 ((dir==DIR_RIGHT) && (x+1==st->gridx))) {
1052 bz = (dir==DIR_UP) ? z-st->gridx : (dir==DIR_DOWN) ? z+st->gridx : (dir==DIR_LEFT) ? z-1 : z+1;
1053 bl = st->grid[bz].line;
1054 } else if ((st->bnratio>1) && (st->bln>0) &&
1055 (st->olen<st->maxlen) && (random()%st->bnratio)) {
1056 /* branch into blocking line */
1060 /* make a new line and new object */
1065 /* this is a filled space, make a branch unless nothing is open around it */
1068 /* make a branch out of this line */
1070 bl=st->grid[z].line;
1073 st->dline[st->li].len = (lt==LINE_FORCE) ? 1 : (lt==LINE_BRIN) ?
1074 st->olen+1 : (!st->forcemax) ? st->olen : 1+random()%st->olen;
1075 st->dline[st->li].x=x;
1077 st->dline[st->li].x-=st->dline[st->li].len;
1078 st->dline[st->li].y=y;
1080 st->dline[st->li].y-=st->dline[st->li].len;
1081 st->dline[st->li].hv = ((dir==DIR_LEFT) || (dir==DIR_RIGHT)) ?
1083 st->dline[st->li].obj = (lt==LINE_NEW) ? st->oi :
1085 st->dline[st->li].color = (lt==LINE_NEW) ?
1086 (_getcolor(st,x,y))%st->ncolors : st->dline[bl].color;
1087 st->dline[st->li].deo=(_getdeo(st,x,y,st->dmap,1) +
1088 (random()%st->dvar) + (random()%st->dvar))*st->ddir;
1089 st->dline[st->li].ndol=0;
1094 _create_screen(struct state *st)
1096 while(!st->grid_full)
1098 qsort(st->dline, st->li+1, sizeof(struct lineStruct), _comparedeo);
1099 /*st->lpu=st->li/20/((6-st->speed)*3);
1100 Used to use a computed lpu, lines per update to control draw speed
1101 draw 1/lpu of the lines before each XSync which takes a split second
1102 the higher the lpu, the quicker the screen draws. This worked somewhat
1103 after the 4->5 update, however with the Mac updating so much more slowly,
1104 values tuned for it draw the screen in a blink on Linux. Therefore we
1105 draw 1/200th of the screen with each update and sleep, if necessary */
1106 st->lpu = (st->dialog) ? st->li/50 : st->li/200;
1107 if (!st->lpu) st->lpu = 1;
1109 st->mode=MODE_ERASE;
1113 _fill_outline(struct state *st, int di)
1119 x=st->dline[di].x*st->lwid+1;
1120 y=st->dline[di].y*st->lwid+1;
1121 if (st->dline[di].hv) {
1122 w=(st->dline[di].len+1)*st->lwid-3;
1126 h=(st->dline[di].len+1)*st->lwid-3;
1128 XFillRectangle (st->display, st->window, st->bgc, x, y, w, h);
1132 _XFillRectangle(struct state *st, int di, int adj)
1134 int a, b, x, y, w, h;
1136 x=st->dline[di].x*st->lwid;
1137 y=st->dline[di].y*st->lwid;
1138 if (st->dline[di].hv) {
1139 w=(st->dline[di].len+1)*st->lwid-1;
1143 h=(st->dline[di].len+1)*st->lwid-1;
1160 XFillRectangle(st->display, st->window, st->fgc, x, y, w, h);
1162 if (h<st->lwid) { /* horizontal */
1164 for (b=0; b<=a; b++)
1165 XFillRectangle(st->display, st->window, st->fgc,
1166 x+b, y+a-b, w-b*2, h-((a-b)*2));
1167 } else { /* vertical */
1169 for (b=0; b<=a; b++)
1170 XFillRectangle(st->display, st->window, st->fgc,
1171 x+a-b, y+b, w-((a-b)*2), h-b*2);
1177 _XFillTriangle(struct state *st, int color, int x1, int y1, int x2, int y2,
1188 XSetForeground(st->display, st->fgc, st->colors[color].pixel);
1189 XFillPolygon (st->display, st->window, st->fgc, points, 3, Convex,
1194 _XFillPolygon4(struct state *st, int color, int x1, int y1, int x2, int y2,
1195 int x3, int y3, int x4, int y4)
1207 XSetForeground(st->display, st->fgc, st->colors[color].pixel);
1208 XFillPolygon (st->display, st->window, st->fgc, points, 4, Convex,
1213 _draw_tiled(struct state *st, int color)
1215 int a, c, d, x, y, z, m1, m2, lr, nl, w, h;
1216 a = (st->dline[st->di].hv) ? 1 : st->gridx;
1217 z = st->dline[st->di].y*st->gridx+st->dline[st->di].x;
1218 m1 = (st->lwid-1)/2;
1223 /* draw tiles one grid cell at a time */
1224 for (c=0; c<=st->dline[st->di].len; c++) {
1225 if (st->dline[st->di].hv) {
1226 x = (st->dline[st->di].x+c)*st->lwid;
1227 y = st->dline[st->di].y*st->lwid;
1229 st->grid[z].dhr=st->di;
1230 if (c<st->dline[st->di].len)
1231 st->grid[z].dhl=st->di;
1233 x = st->dline[st->di].x*st->lwid;
1234 y = (st->dline[st->di].y+c)*st->lwid;
1236 st->grid[z].dvd=st->di;
1237 if (c<st->dline[st->di].len)
1238 st->grid[z].dvu=st->di;
1241 if (st->grid[z].dhl)
1243 if (st->grid[z].dhr)
1245 if (st->grid[z].dvu)
1247 if (st->grid[z].dvd)
1249 /* draw line base */
1252 case 2: /* vertical */
1259 h = ((d==1) || (d==5)) ? lr : nl;
1260 XSetForeground(st->display, st->fgc,
1261 st->colors[color].pixel);
1262 XFillRectangle (st->display, st->window, st->fgc,
1264 XSetForeground(st->display, st->fgc,
1265 st->colors[color+3].pixel);
1266 XFillRectangle (st->display, st->window, st->fgc,
1270 case 8: /* horizontal */
1276 w = (d==4) ? lr : nl;
1277 XSetForeground(st->display, st->fgc,
1278 st->colors[color+1].pixel);
1279 XFillRectangle (st->display, st->window, st->fgc,
1281 XSetForeground(st->display, st->fgc,
1282 st->colors[color+2].pixel);
1283 XFillRectangle (st->display, st->window, st->fgc,
1289 case 1: /* bottom end ^ */
1290 _XFillTriangle(st,color+2, x, y+lr, x+lr, y+lr, x+m2, y+m2);
1292 case 2: /* top end \/ */
1293 _XFillTriangle(st,color+1, x, y, x+lr, y, x+m2, y+m2);
1295 case 4: /* right end < */
1296 _XFillTriangle(st,color+3, x+lr, y, x+lr, y+lr, x+m2, y+m2);
1298 case 5: /* LR corner */
1299 _XFillTriangle(st,color+1, x, y+m2, x+m2, y+m2, x, y);
1300 _XFillPolygon4(st,color+2, x, y+m2, x+m2, y+m2, x+lr, y+lr, x, y+lr);
1302 case 6: /* UR corner */
1303 _XFillPolygon4(st,color+1, x, y+m2, x+m2, y+m2, x+lr, y, x, y);
1304 _XFillTriangle(st,color+2, x, y+m2, x+m2, y+m2, x, y+lr);
1306 case 7: /* T > into line */
1307 _XFillTriangle(st,color+1, x, y+m2, x+m2, y+m2, x, y);
1308 _XFillTriangle(st,color+2, x, y+m2, x+m2, y+m2, x, y+lr);
1310 case 8: /* left end > */
1311 _XFillTriangle(st,color, x, y, x, y+lr, x+m2, y+m2);
1313 case 9: /* LL corner */
1314 _XFillPolygon4(st,color, x+m2, y, x+m2, y+m2, x, y+lr, x, y);
1315 _XFillTriangle(st,color+3, x+m2, y, x+m2, y+m2, x+lr, y);
1317 case 10: /* UL corner */
1318 _XFillPolygon4(st,color, x+m2, y+nl, x+m2, y+m2, x, y, x, y+nl);
1319 _XFillPolygon4(st,color+3, x+m2, y+nl, x+m2, y+m2, x+lr, y+lr, x+lr, y+nl);
1321 case 11: /* T < into line */
1322 _XFillPolygon4(st,color+1, x+nl, y+m2, x+m2, y+m2, x+lr, y, x+nl, y);
1323 _XFillPolygon4(st,color+2, x+nl, y+m2, x+m2, y+m2, x+lr, y+lr, x+nl, y+lr);
1325 case 13: /* T \/ into line */
1326 _XFillTriangle(st,color, x+m2, y, x+m2, y+m2, x, y);
1327 _XFillTriangle(st,color+3, x+m2, y, x+m2, y+m2, x+lr, y);
1329 case 14: /* T ^ into line */
1330 _XFillPolygon4(st,color, x+m2, y+nl, x+m2, y+m2, x, y+lr, x, y+nl);
1331 _XFillPolygon4(st,color+3, x+m2, y+nl, x+m2, y+m2, x+lr, y+lr, x+lr, y+nl);
1333 case 15: /* X intersection */
1334 _XFillTriangle(st,color+1, x, y+m2, x+m2, y+m2, x, y);
1335 _XFillTriangle(st,color+2, x, y+m2, x+m2, y+m2, x, y+lr);
1336 _XFillPolygon4(st,color+1, x+nl, y+m2, x+m2, y+m2, x+lr, y, x+nl, y);
1337 _XFillPolygon4(st,color+2, x+nl, y+m2, x+m2, y+m2, x+lr, y+lr, x+nl, y+lr);
1345 _mselapsed(struct state *st)
1348 gettimeofday(&t, NULL);
1349 t.tv_sec -= st->time.tv_sec;
1350 t.tv_usec -= st->time.tv_usec;
1351 return ((long)t.tv_sec*1000000+t.tv_usec);
1355 _draw_lines(struct state *st)
1357 int n, z, a, color, sh, di;
1359 for (a=0; a<=st->oi; a++)
1362 for (st->di=st->bi; st->di<_min(st->li+1,st->bi+st->lpu); st->di++) {
1363 color=(st->dline[st->di].color%st->ncolors)*st->shades;
1364 XSetForeground(st->display, st->fgc, st->colors[color].pixel);
1368 st->dline[st->di].ndol=st->fdol[st->dline[st->di].obj];
1369 st->fdol[st->dline[st->di].obj]=st->di;
1370 for (sh=0; sh<st->lwid/2; sh++) {
1371 XSetForeground(st->display, st->fgc,
1372 st->colors[color+sh].pixel);
1375 _XFillRectangle(st,di,sh);
1376 di=st->dline[di].ndol;
1381 st->dline[st->di].ndol=st->fdol[st->dline[st->di].obj];
1382 st->fdol[st->dline[st->di].obj]=st->di;
1383 for (sh=0; sh<st->lwid/2; sh++) {
1384 XSetForeground(st->display, st->fgc,
1385 st->colors[color+(st->lwid/2)-sh-1].pixel);
1388 _XFillRectangle(st,di,sh);
1389 di=st->dline[di].ndol;
1394 _draw_tiled(st,color);
1396 default: /* D3D_NONE */
1397 _XFillRectangle(st,st->di,0);
1399 _fill_outline(st, st->di);
1400 z=st->dline[st->di].y*st->gridx+st->dline[st->di].x;
1401 a = (st->dline[st->di].hv) ? 1 : st->gridx;
1402 for (n=0; n<=st->dline[st->di].len; n++) {
1403 _fill_outline(st, st->grid[z].dhl);
1404 _fill_outline(st, st->grid[z].dhr);
1405 _fill_outline(st, st->grid[z].dvu);
1406 _fill_outline(st, st->grid[z].dvd);
1407 if (st->dline[st->di].hv) {
1409 st->grid[z].dhr=st->di;
1410 if (n<st->dline[st->di].len)
1411 st->grid[z].dhl=st->di;
1414 st->grid[z].dvd=st->di;
1415 if (n<st->dline[st->di].len)
1416 st->grid[z].dvu=st->di;
1424 if (st->di>st->li) {
1426 st->mode=MODE_CREATE;
1433 _erase_lines(struct state *st)
1437 for (st->di=st->bi; st->di<_min(st->eli+1,st->bi+st->elpu); st->di++) {
1438 if (st->eline[st->di].hv) {
1439 XFillRectangle (st->display, st->window, st->bgc,
1440 st->eline[st->di].x*st->elwid,
1441 st->eline[st->di].y*st->elwid,
1442 (st->eline[st->di].len+1)*st->elwid, st->elwid);
1444 XFillRectangle (st->display, st->window, st->bgc,
1445 st->eline[st->di].x*st->elwid,
1446 st->eline[st->di].y*st->elwid,
1447 st->elwid, (st->eline[st->di].len+1)*st->elwid);
1449 if (st->di==st->eli) /* clear just in case */
1450 XFillRectangle(st->display, st->window, st->bgc, 0, 0,
1451 st->xgwa.width, st->xgwa.height);
1453 if (st->di>st->eli) {
1456 st->mode=MODE_CREATE;
1466 abstractile_init(Display *display, Window window)
1468 struct state *st = (struct state *) calloc (1, sizeof(*st));
1470 /* struct utsname os;*/
1472 char *tile = get_string_resource(display, "tile", "Tile");
1473 if (tile && !strcmp(tile, "random")) st->tile = TILE_RANDOM;
1474 else if (tile && !strcmp(tile, "flat")) st->tile = TILE_FLAT;
1475 else if (tile && !strcmp(tile, "thin")) st->tile = TILE_THIN;
1476 else if (tile && !strcmp(tile, "outline")) st->tile = TILE_OUTLINE;
1477 else if (tile && !strcmp(tile, "block")) st->tile = TILE_BLOCK;
1478 else if (tile && !strcmp(tile, "neon")) st->tile = TILE_NEON;
1479 else if (tile && !strcmp(tile, "tiled")) st->tile = TILE_TILED;
1481 if (tile && *tile && !!strcmp(tile, "random"))
1482 fprintf(stderr, "%s: unknown tile option %s\n", progname, tile);
1483 st->tile = TILE_RANDOM;
1486 st->speed = get_integer_resource(display, "speed", "Integer");
1487 if (st->speed < 0) st->speed = 0;
1488 if (st->speed > 5) st->speed = 5;
1489 st->sleep = get_integer_resource(display, "sleep", "Integer");
1490 if (st->sleep < 0) st->sleep = 0;
1491 if (st->sleep > 60) st->sleep = 60;
1493 st->display=display;
1496 /* get screen size and create Graphics Contexts */
1497 XGetWindowAttributes (display, window, &st->xgwa);
1498 gcv.foreground = get_pixel_resource(display, st->xgwa.colormap,
1499 "foreground", "Foreground");
1500 st->fgc = XCreateGC (display, window, GCForeground, &gcv);
1501 gcv.foreground = get_pixel_resource(display, st->xgwa.colormap,
1502 "background", "Background");
1503 st->bgc = XCreateGC (display, window, GCForeground, &gcv);
1505 /* Um, no. This is obscene. -jwz.
1507 st->newcols=((!strcmp(os.sysname,"Linux")) || (!strcmp(os.sysname,"Darwin")))
1512 st->mode=MODE_CREATE;
1518 static unsigned long
1519 abstractile_draw (Display *dpy, Window window, void *closure)
1521 struct state *st = (struct state *) closure;
1524 gettimeofday(&st->time, NULL);
1526 /* If the window is too small, do nothing, sorry! */
1527 if (st->xgwa.width > 20 && st->xgwa.height > 20) {
1542 usleep = ((!st->ii) && (st->mode==MODE_CREATE)) ? 0 :
1543 (st->mode==MODE_CREATE) ? st->sleep*1000000-mse :
1544 /* speed=0-5, goal is 10,8,6,4,2,0 sec normal and 5,4,3,2,1,0 dialog */
1545 (5-st->speed)*(2-st->dialog)*100000/st->lpu-mse;
1552 abstractile_reshape (Display *dpy, Window window, void *closure,
1553 unsigned int w, unsigned int h)
1555 struct state *st = (struct state *) closure;
1557 st->xgwa.height = h;
1558 if (w*h>st->max_wxh)
1563 abstractile_event (Display *dpy, Window window, void *closure, XEvent *event)
1569 abstractile_free (Display *dpy, Window window, void *closure)
1571 struct state *st = (struct state *) closure;
1575 static const char *abstractile_defaults [] = {
1576 ".background: black",
1577 ".foreground: white",
1585 static XrmOptionDescRec abstractile_options [] = {
1586 { "-sleep", ".sleep", XrmoptionSepArg, 0 },
1587 { "-speed", ".speed", XrmoptionSepArg, 0 },
1588 { "-tile", ".tile", XrmoptionSepArg, 0 },
1592 XSCREENSAVER_MODULE ("Abstractile", abstractile)