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
68 unsigned int x, y, len, obj, color, ndol;
74 unsigned int line, hl, hr, vu, vd, dhl, dhr, dvu, dvd;
77 /* basically the same as global variables, but used to keep them in a bucket
78 and pass them around easier like the original C++ implementation */
83 XWindowAttributes xgwa;
88 struct lineStruct *dline, *eline;
89 struct gridStruct *grid;
90 unsigned int *zlist, *fdol;
92 /* draw, erase, fill, init, line, object, z indexes */
93 unsigned int di, ei, fi, ii, bi, li, eli, oi, zi;
95 unsigned int gridx, gridy, gridn; /* grid size */
96 int lwid, bwid, swid;/* line width, background width, shadow width */
98 int elwid, elpu, egridx, egridy; /* for now */
100 int bnratio; /* ratio of branch lines to new lines */
101 int maxlen; /* maximum length of line */
102 int forcemax; /* make line be max possible length */
103 int olen; /* open length set by findopen */
104 int bln; /* blocking line number set by findopen, -1=edge */
105 /* color variables */
106 int ncolors; /* number of colors for screen */
108 int rco[MAXCOLORS]; /* random ordering of colors for deo */
111 Bool newcols; /* can we create new colormaps with each screen */
113 int dmap, emap; /* pattern by which line draw order is determined */
114 int dvar, evar; /* random number added to .deo to vary */
115 int ddir, edir; /* draw/erase in forward direction or reverse */
116 int lpu; /* lines drawn per update used to adjust speed */
120 /* layered draw variables */
121 int pattern[LAYERS], shape[LAYERS], mix[LAYERS];
122 int csw[LAYERS], wsx[LAYERS], wsy[LAYERS], sec[LAYERS];
123 int cs1[LAYERS], cs2[LAYERS], cs3[LAYERS]; int cs4[LAYERS];
124 int wave[LAYERS], waveh[LAYERS], wavel[LAYERS];
125 int rx1[LAYERS], rx2[LAYERS], rx3[LAYERS];
126 int ry1[LAYERS], ry2[LAYERS], ry3[LAYERS];
128 int mode, sleep, speed, tile, dialog;
129 Bool grid_full, resized;
150 _dist(struct state *st, int x1, int x2, int y1, int y2, int s)
156 return((int)sqrt(xd*xd+yd*yd));
158 return((int)sqrt(xd*xd*st->cs1[0]*2+yd*yd));
160 return((int)sqrt(xd*xd+yd*yd*st->cs2[0]*2));
162 return((int)sqrt(xd*xd*st->cs1[0]/st->cs2[0]+yd*yd*st->cs3[0]/st->cs4[0]));
167 _wave(struct state *st, int x, int h, int l, int wave)
171 case 0: /* cos wave*/
172 return((int)(cos((double)x*M_PI/l)*h));
173 case 1: /* double wave*/
174 case 2: /* double wave*/
175 return((int)(cos((double)x*M_PI/l)*h)+(int)(sin((double)x*M_PI/l/st->cs1[1])*h));
176 case 3: /* zig zag */
177 return(abs((x%(l*2)-l))*h/l);
178 case 4: /* giant zig zag */
179 return(abs((x%(l*4)-l*2))*h*3/l);
180 case 5: /* sawtooth */
182 default: /* no wave */
188 _triangle(struct state *st, int x, int y, int rx, int ry, int t)
192 return(_min(_min(x+y+rx-(st->gridx/2),st->gridx-x+y),(st->gridy-y+(ry/2))*3/2));
194 return(_min(_min(x-rx,y-ry),(rx+ry-x-y)*2/3));
196 return(_min(_min(st->gridx-x-rx,y-ry),(rx+ry-st->gridx+x-y)*2/3));
198 return(_min(_min(x-rx,st->gridy-y-ry),(rx+ry-x-st->gridy+y)*2/3));
200 return(_min(_min(st->gridx-x-rx,st->gridy-y-ry),(rx+ry-st->gridx+x-st->gridy+y)*2/3));
204 _init_zlist(struct state *st)
206 unsigned int tmp, y, z;
208 st->gridx=st->xgwa.width/st->lwid;
209 st->gridy=st->xgwa.height/st->lwid;
210 st->gridn=st->gridx*st->gridy;
212 for (z=0; z<st->gridn; z++) {
213 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;
216 /* rather than pull x,y points randomly and wait to hit final empy cells a
217 list of all points is created and mixed so empty cells do get hit last */
218 for (z=0; z<st->gridn; z++) {
219 y=random()%st->gridn;
221 st->zlist[y]=st->zlist[z];
227 make_color_ramp_rgb (Screen *screen, Visual *visual, Colormap cmap,
228 int r1, int g1, int b1, int r2, int g2, int b2,
229 XColor *colors, int *ncolorsP, Bool closed_p)
232 double s1, s2, v1, v2;
233 rgb_to_hsv(r1, g1, b1, &h1, &s1, &v1);
234 rgb_to_hsv(r2, g2, b2, &h2, &s2, &v2);
235 make_color_ramp(screen, visual, cmap, h1, s1, v1, h2, s2, v2,
236 colors, ncolorsP, False, True, 0);
241 _init_colors(struct state *st)
244 int c1, c2, c3, h1, h2, h3;
245 int r1, g1, b1, r2, g2, b2, r3, g3, b3;
246 double s1, s2, s3, v1, v2, v3;
247 XColor tmp_col1[16], tmp_col2[16], tmp_col3[16];
249 unsigned short basecol[BASECOLORS][3]={
250 /* 0 dgray */ {0x3333,0x3333,0x3333},
251 /* 1 dbrown */ {0x6666,0x3333,0x0000},
252 /* 2 dred */ {0x9999,0x0000,0x0000},
253 /* 3 orange */ {0xFFFF,0x6666,0x0000},
254 /* 4 gold */ {0xFFFF,0xCCCC,0x0000},
255 /* 5 olive */ {0x6666,0x6666,0x0000},
256 /* 6 ivy */ {0x0000,0x6666,0x0000},
257 /* 7 dgreen */ {0x0000,0x9999,0x0000},
258 /* 8 bluegray */ {0x3333,0x6666,0x6666},
259 /* 9 dblue */ {0x0000,0x0000,0x9999},
260 /* 10 blue */ {0x3333,0x3333,0xFFFF},
261 /* 11 dpurple */ {0x6666,0x0000,0xCCCC},
262 /* 12 purple */ {0x6666,0x3333,0xFFFF},
263 /* 13 violet */ {0x9999,0x3333,0x9999},
264 /* 14 magenta */ {0xCCCC,0x3333,0xCCCC},
266 /* 15 gray */ {0x3333,0x3333,0x3333},
267 /* 16 brown */ {0x9999,0x6666,0x3333},
268 /* 17 tan */ {0xCCCC,0x9999,0x3333},
269 /* 18 red */ {0xFFFF,0x0000,0x0000},
270 /* 19 lorange */ {0xFFFF,0x9999,0x0000},
271 /* 20 yellow */ {0xFFFF,0xFFFF,0x0000},
272 /* 21 lolive */ {0x9999,0x9999,0x0000},
273 /* 22 green */ {0x3333,0xCCCC,0x0000},
274 /* 23 lgreen */ {0x3333,0xFFFF,0x3333},
275 /* 24 cyan */ {0x0000,0xCCCC,0xCCCC},
276 /* 25 sky */ {0x3333,0xFFFF,0xFFFF},
277 /* 26 marine */ {0x3333,0x6666,0xFFFF},
278 /* 27 lblue */ {0x3333,0xCCCC,0xFFFF},
279 /* 28 lpurple */ {0x9999,0x9999,0xFFFF},
280 /* 29 pink */ {0xFFFF,0x9999,0xFFFF}};
283 st->shades = (st->d3d==D3D_TILED) ? 5 : st->lwid/2+1;
284 st->ncolors=4+random()%4;
285 if (st->cmap>0) { /* tint the basecolors a bit */
286 for (c1=0; c1<BASECOLORS; c1++)
287 for (c2=0; c2<2; c2++)
288 if (!basecol[c1][c2]) {
289 basecol[c1][c2]+=random()%16000;
290 } else if (basecol[c1][c2]==0xFFFF) {
291 basecol[c1][c2]-=random()%16000;
293 basecol[c1][c2]-=8000;
294 basecol[c1][c2]+=random()%16000;
299 for (c1=0; c1<st->ncolors; c1++)
300 col[c1]=random()%BASECOLORS;
303 for (c1=0; c1<st->ncolors; c1++)
306 case 2: /* semi consecutive darks */
308 for (c1=1; c1<st->ncolors; c1++)
309 col[c1]=(col[c1-1]+1+random()%2)%15;
311 case 3: /* consecutive darks */
312 col[0]=random()%(15-st->ncolors);
313 for (c1=1; c1<st->ncolors; c1++)
317 for (c1=0; c1<st->ncolors; c1++) {
318 /* adjust colors already set */
319 for (h1=c1*st->shades-1; h1>=0; h1--)
320 st->colors[h1+st->shades]=st->colors[h1];
321 make_color_ramp_rgb(st->xgwa.screen, st->xgwa.visual, st->xgwa.colormap,
322 basecol[col[c1]][0], basecol[col[c1]][1], basecol[col[c1]][2],
323 0xFFFF, 0xFFFF, 0xFFFF, st->colors, &st->shades,
330 if (st->cmap%2) { /* basecolors */
333 c2=(c1+3+(random()%5))%15;
334 c3=(c2+3+(random()%5))%15;
336 c1=random()%BASECOLORS;
337 c2=(c1+5+(random()%10))%BASECOLORS;
338 c3=(c2+5+(random()%10))%BASECOLORS;
349 } else { /* random rgb's */
353 r2=(r1+16384+random()%32768)%65535;
354 g2=(g1+16384+random()%32768)%65535;
355 b2=(b1+16384+random()%32768)%65535;
356 r3=(r2+16384+random()%32768)%65535;
357 g3=(g2+16384+random()%32768)%65535;
358 b3=(b2+16384+random()%32768)%65535;
361 case 0: /* make_color_ramp color->color */
363 case 2: /* make_color_ramp color->white */
365 st->ncolors=5+random()%5;
368 make_color_ramp_rgb(st->xgwa.screen, st->xgwa.visual, st->xgwa.colormap,
369 r1, g1, b1, r2, g2, b2,
370 st->colors, &st->ncolors, random()%2);
372 case 4: /* 3 color make_color_loop */
376 st->ncolors=8+random()%12;
377 rgb_to_hsv(r1, g1, b1, &h1, &s1, &v1);
378 rgb_to_hsv(r2, g2, b2, &h2, &s2, &v2);
379 rgb_to_hsv(r3, g3, b3, &h3, &s3, &v3);
381 make_color_loop(st->xgwa.screen, st->xgwa.visual, st->xgwa.colormap,
382 h1, s1, v1, h2, s2, v2, h3, s3, v3,
383 st->colors, &st->ncolors, True, False);
385 case 8: /* random smooth */
387 st->ncolors=(random()%4)*6+12;
388 make_smooth_colormap (st->xgwa.screen, st->xgwa.visual,
389 st->xgwa.colormap, st->colors, &st->ncolors,
392 case 10: /* rainbow */
393 st->ncolors=(random()%4)*6+12;
394 make_uniform_colormap (st->xgwa.screen, st->xgwa.visual,
395 st->xgwa.colormap, st->colors, &st->ncolors,
398 case 11: /* dark to light blend */
403 make_color_ramp_rgb(st->xgwa.screen, st->xgwa.visual, st->xgwa.colormap,
404 r1, g1, b1, 0xFFFF, 0xFFFF, 0xFFFF,
405 tmp_col1, &st->ncolors, False);
406 make_color_ramp_rgb(st->xgwa.screen, st->xgwa.visual, st->xgwa.colormap,
407 r2, g2, b2, 0xFFFF, 0xFFFF, 0xFFFF,
408 tmp_col2, &st->ncolors, False);
410 for(c1=0; c1<=4; c1++) {
411 st->colors[c1*2]=tmp_col1[c1];
412 st->colors[c1*2+1]=tmp_col2[c1];
416 make_color_ramp_rgb(st->xgwa.screen, st->xgwa.visual, st->xgwa.colormap,
417 r3, g3, b3, 0xFFFF, 0xFFFF, 0xFFFF,
418 tmp_col3, &st->ncolors, False);
419 for(c1=0; c1<=4; c1++) {
420 st->colors[c1*3]=tmp_col1[c1];
421 st->colors[c1*3+1]=tmp_col2[c1];
422 st->colors[c1*3+2]=tmp_col3[c1];
427 default: /* random */
428 st->ncolors=(random()%4)*6+12;
429 make_random_colormap (st->xgwa.screen, st->xgwa.visual,
430 st->xgwa.colormap, st->colors, &st->ncolors,
431 False, True, False, True);
435 /* set random color order for drawing and erasing */
436 for (c1=0; c1<MAXCOLORS; c1++)
438 for (c1=0; c1<MAXCOLORS; c1++) {
439 c3=random()%MAXCOLORS;
441 st->rco[c1]=st->rco[c3];
446 static int _comparedeo(const void *i, const void *j)
448 struct lineStruct *h1, *h2;
450 h1=(struct lineStruct *)i;
451 h2=(struct lineStruct *)j;
452 if (h1->deo > h2->deo)
454 if (h1->deo < h2->deo)
460 _hv(struct state *st, int x, int y, int d1, int d2, int pn, Bool de)
466 v1 = (de) ? st->egridx-x : st->gridx-x;
475 v1 = (de) ? st->egridy-y : st->gridy-y;
480 v2 = (de) ? st->egridx-x : st->gridx-x;
489 v2 = (de) ? st->egridy-y : st->gridy-y;
492 r = (de) ? (st->dline[st->li].hv) ? (v1+10000)*pn : (v2+10000)*-pn :
493 (st->eline[st->li].hv) ? (v1+10000)*pn : (v2+10000)*-pn;
498 _getdeo(struct state *st, int x, int y, int map, int de)
502 case 0: /* horizontal one side */
504 case 1: /* vertical one side */
506 case 2: /* horizontal two side */
507 return(_min(x,st->gridx-x)+1);
508 case 3: /* vertical two side */
509 return(_min(y,st->gridy-y)+1);
511 return(_max(abs(x-st->rx3[de]),abs(y-st->ry3[de]))+1);
512 case 5: /* two squares */
513 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);
514 case 6: /* horizontal rectangle */
515 return(_max(abs(x-st->rx3[de]),abs(y-(st->ry3[de]))*st->cs1[de])+1);
516 case 7: /* vertical rectangle */
517 return(_max(abs(x-st->rx3[de])*st->cs1[de],abs(y-(st->ry3[de])))+1);
518 case 8: /* + cross */
519 return(_min(abs(x-st->rx3[de]),abs(y-(st->ry3[de])))+1);
520 case 9: /* diagonal */
522 case 10: /* opposite diagonal */
523 return((x*3/4+st->gridy-y)+1);
524 case 11: /* diamond */
525 return((abs(x-st->rx3[de])+abs(y-st->ry3[de]))/2+1);
526 case 12: /* two diamonds */
527 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);
528 case 13: /* circle */
529 return(_dist(st,x,st->rx3[de],y,st->ry3[de],0)+1);
530 case 14: /* horizontal ellipse */
531 return(_dist(st,x,st->rx3[de],y,st->ry3[de],1)+1);
532 case 15: /* vertical ellipse */
533 return(_dist(st,x,st->rx3[de],y,st->ry3[de],2)+1);
534 case 16: /* two circles */
535 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);
536 case 17: /* horizontal straight wave */
537 return(x+_wave(st,st->gridy+y,st->csw[0]*st->cs1[0],st->csw[0]*st->cs2[0],st->wave[de]));
538 case 18: /* vertical straight wave */
539 return(y+_wave(st,st->gridx+x,st->csw[0]*st->cs1[0],st->csw[0]*st->cs2[0],st->wave[de]));
540 case 19: /* horizontal wavey wave */
541 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);
542 case 20: /* vertical wavey wave */
543 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);
544 /* no d3d for 21,22 */
545 case 21: /* simultaneous directional */
546 return(_hv(st,x,y,st->cs1[0]%2,st->cs2[0]%2,1,de));
547 case 22: /* reverse directional */
548 return(_hv(st,x,y,st->cs1[0]%2,st->cs2[0]%2,-1,de));
549 case 23: /* length */
551 return(st->dline[st->li].len*1000+random()%5000);
553 return(st->eline[st->li].len*1000+random()%5000);
554 case 24: /* object */
559 return(st->dline[st->li].obj*100);
561 return(st->eline[st->li].obj*100);
563 cr = (de) ? st->dline[st->li].color : st->eline[st->li].color;
564 if (map<34) cr=st->rco[cr];
565 if ((map%6<4) || (de)) { /* by color */
568 } else if (map%6==4) { /* by color horizontaly */
570 cr+=(x+random()%(st->gridx/2));
571 } else { /* by color vertically */
573 cr+=(y+random()%(st->gridy/2));
581 _init_screen(struct state *st)
584 struct lineStruct *tmp;
586 /* malloc memory in case of resize */
588 st->max_wxh=st->xgwa.width*st->xgwa.height;
601 st->narray = (st->xgwa.width+1)*(st->xgwa.height+1)/4+1;
602 st->dline = calloc(st->narray, sizeof(struct lineStruct));
603 st->eline = calloc(st->narray, sizeof(struct lineStruct));
604 st->grid = calloc(st->narray, sizeof(struct gridStruct));
605 st->zlist = calloc(st->narray, sizeof(unsigned int));
606 st->fdol = calloc(st->narray, sizeof(unsigned int));
607 st->odi = calloc(st->narray, sizeof(Bool));
608 if ((st->dline == NULL) || (st->eline == NULL) ||
609 (st->grid == NULL) || (st->zlist == NULL) ||
610 (st->fdol == NULL) || (st->odi == NULL)) {
611 fprintf(stderr, "not enough memory\n");
614 st->dialog = (st->xgwa.width<500) ? 1 : 0;
618 /* swap st->dline and st->eline pointers to resort and erase */
625 st->egridx=st->gridx;
626 st->egridy=st->gridy;
628 /* create new erase order */
629 for (st->li=1; st->li<=st->eli; st->li++)
630 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;
631 qsort(st->eline, st->eli+1, sizeof(struct lineStruct), _comparedeo);
635 /* clear arrays and other counters */
636 st->di=st->ei=st->fi=st->li=st->oi=st->zi=0;
638 /* li starts from 1 */
639 st->dline[0].x=st->dline[0].y=st->dline[0].len=0;
640 /* to keep it first after sorting so di is never null */
641 st->dline[0].deo=-999999999;
643 /* set random screen variables */
644 st->lwid = (st->ii==1) ? 3 : 2+((random()%6)%4);
645 st->d3d = ((st->tile==TILE_FLAT) || (st->tile==TILE_THIN) ||
646 (st->tile==TILE_OUTLINE)) ? D3D_NONE :
647 (st->tile==TILE_BLOCK) ? D3D_BLOCK :
648 (st->tile==TILE_NEON) ? D3D_NEON :
649 (st->tile==TILE_TILED) ? D3D_TILED :
650 /* force TILE_D3D on first screen to properly load all shades */
651 ((st->ii==1) && (!st->newcols)) ? D3D_TILED : (random()%5)%4;
652 /* st->d3d=D3D_BLOCK; st->lwid=2; */
653 st->outline = (st->tile==TILE_OUTLINE) ? 1 :
654 ((st->tile!=TILE_RANDOM) || (random()%5)) ? 0 : 1;
655 st->round = (st->d3d==D3D_NEON) ? 1 :
656 ((st->d3d==D3D_BLOCK) || (st->outline) || (random()%6)) ? 0 : 1;
657 if ((st->d3d) || (st->outline) || (st->round))
659 if ((!st->d3d) && (!st->round) && (!st->outline) && (st->lwid>3))
661 if (st->d3d==D3D_TILED)
663 if (st->tile==TILE_THIN)
668 st->maxlen=(st->lwid>6) ? 2+(random()%4) :
669 (st->lwid>4) ? 2+(random()%8)%6 :
670 (st->lwid>2) ? 2+(random()%12)%8 : 2+(random()%15)%10;
671 st->bnratio = 4+(random()%4)+(random()%4);
672 st->forcemax = (random()%6) ? 0 : 1;
674 if ((st->ii==1) || (st->newcols))
677 st->dmap = (st->emap+5+(random()%5))%DRAWORDERS;
679 st->dmap=20+random()%20;
681 st->dvar = (st->dmap>22) ? 100 : 10+(st->csw[0]*(random()%5));
682 st->ddir= (random()%2) ? 1 : -1;
684 st->emap = (st->dmap+10+(random()%10))%20;
685 st->evar = (st->emap>22) ? 100 : 10+(st->csw[0]*(random()%5));
686 st->edir= (random()%2) ? 1 : -1;
688 st->layers= (random()%2) ? 2 : (random()%2) ? 1 : (random()%2) ? 3 : 4;
689 st->cmap=(st->cmap+5+(random()%10))%COLORMAPS;
691 for (x=0; x<LAYERS; x++) {
692 st->pattern[x]=random()%PATTERNS;
693 st->shape[x]=random()%SHAPES;
694 st->mix[x]=random()%20;
695 nstr = (st->lwid==2) ? 20+random()%12 :
696 (st->lwid==3) ? 16+random()%8 :
697 (st->lwid==4) ? 12+random()%6 :
698 (st->lwid==5) ? 10+random()%5 :
699 (st->lwid==6) ? 8+random()%4 :
701 st->csw[x] = _max(5,st->gridy/nstr);
702 st->wsx[x] = (st->wsx[x]+3+(random()%3))%STRETCHES;
703 st->wsy[x] = (st->wsy[x]+3+(random()%3))%STRETCHES;
704 st->sec[x] = random()%5;
705 if ((!st->dialog) && (st->sec[x]<2)) st->csw[x]/=2;
706 st->cs1[x] = (st->dialog) ? 1+random()%3 : 2+random()%5;
707 st->cs2[x] = (st->dialog) ? 1+random()%3 : 2+random()%5;
708 st->cs3[x] = (st->dialog) ? 1+random()%3 : 2+random()%5;
709 st->cs4[x] = (st->dialog) ? 1+random()%3 : 2+random()%5;
710 st->wave[x]=random()%WAVES;
711 st->wavel[x]=st->csw[x]*(2+random()%6);
712 st->waveh[x]=st->csw[x]*(1+random()%3);
713 st->rx1[x]=(st->gridx/10+random()%(st->gridx*8/10));
714 st->ry1[x]=(st->gridy/10+random()%(st->gridy*8/10));
715 st->rx2[x]=(st->gridx*2/10+random()%(st->gridx*6/10));
716 st->ry2[x]=(st->gridy*2/10+random()%(st->gridy*6/10));
717 st->rx3[x]=(st->gridx*3/10+random()%(st->gridx*4/10));
718 st->ry3[x]=(st->gridy*3/10+random()%(st->gridy*4/10));
723 _shape(struct state *st, int x, int y, int rx, int ry, int n)
725 switch(st->shape[n]) {
726 case 0: /* square/rectangle */
729 return(1+_max(abs(x-rx)*st->cs1[n]/st->cs2[n],abs(y-ry)*st->cs3[n]/st->cs4[n]));
730 case 3: /* diamond */
732 return(1+(abs(x-rx)*st->cs1[n]/st->cs2[n]+abs(y-ry)*st->cs3[n]/st->cs4[n]));
733 case 5: /* 8 point star */
734 return(1+_min(_max(abs(x-rx),abs(y-ry))*3/2,abs(x-rx)+abs(y-ry)));
735 case 6: /* circle/oval */
738 return(1+_dist(st,x,rx,y,ry,st->cs1[n]));
739 case 9: /* black hole circle */
740 return(1+(st->gridx*st->gridy/(1+(_dist(st,x,rx,y,ry,st->cs2[n])))));
742 return(1+_min(abs(x-rx)*st->gridx/(abs(y-ry)+1),abs(y-ry)*st->gridx/(abs(x-rx)+1)));
743 case 11: /* 2 circles+inverted circle */
744 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]))));
746 return(1+(int)sqrt(abs((x-rx)*(y-ry))));
747 case 13: /* centered ellipse */
748 return(1+_dist(st,x,rx,y,ry,0)+_dist(st,x,st->gridx-rx,y,st->gridy-ry,0));
749 default: /* triangle */
750 return(1+_triangle(st,x,y,rx,ry,st->cs4[n]));
752 return(1+_triangle(st,x,y,rx,ry,st->cs4[n]));
756 _pattern(struct state *st, int x, int y, int n)
765 x+=(st->gridy-y)/(1+st->cs4[n]);
768 x+=_wave(st,y,st->gridx/(1+st->cs1[n]),st->gridy,0);
771 x+=_wave(st,st->gridy-y,st->gridy/(1+st->cs1[n]),st->gridy,0);
773 case 4: /* U curves */
774 x+=_wave(st,y,st->cs1[n]*st->csw[n]/2,st->gridy*2/M_PI,0);
777 x-=_wave(st,y,st->cs1[n]*st->csw[n]/2,st->gridy*2/M_PI,0);
782 y+=ox/(1+st->cs1[n]);
785 y+=(st->gridx-ox)/(1+st->cs1[n]);
788 y+=_wave(st,ox,st->gridx/(1+st->cs1[n]),st->gridx,0);
791 y+=_wave(st,st->gridx-ox,st->gridx/(1+st->cs1[n]),st->gridx,0);
793 case 4: /* U curves */
794 y+=_wave(st,ox,st->cs1[n]*st->csw[n]/2,st->gridy*2/M_PI,0);
797 y-=_wave(st,ox,st->cs1[n]*st->csw[n]/2,st->gridy*2/M_PI,0);
800 switch(st->pattern[n]) {
801 case 0: /* horizontal stripes */
804 case 1: /* vertical stripes */
807 case 2: /* diagonal stripes */
808 v=(x+(y*st->cs1[n]/st->cs2[n]));
810 case 3: /* reverse diagonal stripes */
811 v=(x-(y*st->cs1[n]/st->cs2[n]));
813 case 4: /* checkerboard */
814 v=(y/st->csw[n]*3+x/st->csw[n])*st->csw[n];
816 case 5: /* diagonal checkerboard */
817 v=((x+y)/2/st->csw[n]+(x+st->gridy-y)/2/st->csw[n]*3)*st->csw[n];
819 case 6: /* + cross */
820 v=st->gridx+(_min(abs(x-st->rx3[n]),abs(y-st->ry3[n]))*2);
822 case 7: /* double + cross */
823 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;
825 case 8: /* X cross */
826 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);
828 case 9: /* double X cross */
829 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;
831 case 10: /* horizontal stripes/waves */
832 v=st->gridy+(y+_wave(st,x,st->waveh[n],st->wavel[n],st->wave[n]));
834 case 11: /* vertical stripes/waves */
835 v=st->gridx+(x+_wave(st,y,st->waveh[n],st->wavel[n],st->wave[n]));
837 case 12: /* diagonal stripes/waves */
838 v=st->gridx+(x+(y*st->cs1[n]/st->cs2[n])+_wave(st,x,st->waveh[n],st->wavel[n],st->wave[n]));
840 case 13: /* diagonal stripes/waves */
841 v=st->gridx+(x-(y*st->cs1[n]/st->cs2[n])+_wave(st,y,st->waveh[n],st->wavel[n],st->wave[n]));
843 case 14: /* horizontal spikey waves */
844 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]);
846 case 15: /* vertical spikey waves */
847 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]);
849 case 16: /* big slanted hwaves */
850 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]);
852 case 17: /* big slanted vwaves */
853 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]);
855 case 18: /* double hwave */
856 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]);
858 case 19: /* double vwave */
859 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]);
861 case 20: /* one shape */
864 v=_shape(st,x, y, st->rx3[n], st->ry3[n], n);
866 case 23: /* two shapes */
869 v=_min(_shape(st,x, y, st->rx1[n], st->ry1[n], n),_shape(st,x, y, st->rx2[n], st->ry2[n], n));
871 case 26: /* two shapes opposites */
873 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));
875 case 28: /* two shape checkerboard */
877 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];
879 case 30: /* two shape blob */
881 v=(_shape(st,x, y, st->rx1[n], st->ry1[n], n)+_shape(st,x, y, st->rx2[n], st->ry2[n], n))/2;
883 case 32: /* inverted two shape blob */
885 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;
887 case 34: /* three shapes */
889 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)));
891 case 36: /* three shape blob */
893 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;
895 case 38: /* 4 shapes */
896 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)));
898 case 39: /* four rainbows */
899 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)));
902 /* stretch or contract stripe */
905 v=(int)sqrt((int)sqrt(abs(v)*st->gridx)*st->gridx);
908 v=((int)pow(v,2)/st->gridx);
915 _getcolor(struct state *st, int x, int y)
919 for (n=0; n<st->layers; n++) {
920 cv[n]=_pattern(st,x,y,n);
921 /* first wave/shape */
922 cv[0] = (!n) ? cv[0]/st->csw[0] :
924 (st->mix[n]<5) ? (cv[0]*st->csw[0]+cv[n])/st->csw[n] :
925 /* checkerboard+ncol/2 */
926 (st->mix[n]<12) ? cv[0]+(cv[n]/st->csw[n]*st->ncolors/2) :
928 (st->mix[n]<16) ? cv[0]+(cv[n]/st->csw[n]) :
930 (st->mix[n]<18) ? cv[0]-(cv[n]/st->csw[n]) :
931 /* r to l morph mix */
932 (st->mix[n]==18) ? ((cv[0]*x)+(cv[n]*(st->gridx-x)/st->csw[n]))/st->gridx :
933 /* u to d morph mix */
934 ((cv[0]*y)+(cv[n]*(st->gridy-y)/st->csw[n]))/st->gridy;
939 /* return value=line direction
940 st->olen=open space to edge or next blocking line
941 st->bln=blocking line number or -1 if edge blocks */
943 _findopen(struct state *st, int x, int y, int z)
945 int dir, od[4], no=0;
947 if (((st->grid[z].hl) || (st->grid[z].hr)) &&
948 ((st->grid[z].vu) || (st->grid[z].vd)))
950 if ((z>st->gridx) && (!st->grid[z].hl) && (!st->grid[z].hr) &&
951 (!st->grid[z-st->gridx].line)) {
955 if ((z<st->gridn-st->gridx) && (!st->grid[z].hl) &&
956 (!st->grid[z].hr) && (!st->grid[z+st->gridx].line)) {
960 if ((x) && (!st->grid[z].hl) && (!st->grid[z].hr) &&
961 (!st->grid[z-1].line)) {
965 if (((z+1)%st->gridx) && (!st->grid[z].hl) && (!st->grid[z].hr) &&
966 (!st->grid[z+1].line)) {
974 while ((st->olen<=st->maxlen) && (!st->bln)) {
977 st->bln = (y-st->olen<0) ? -1 :
978 st->grid[z-(st->olen*st->gridx)].line;
980 st->bln = (y+st->olen>=st->gridy) ? -1 :
981 st->grid[z+(st->olen*st->gridx)].line;
983 st->bln = (x-st->olen<0) ? -1 :
984 st->grid[z-st->olen].line;
986 st->bln = (x+st->olen>=st->gridx) ? -1 :
987 st->grid[z+st->olen].line;
994 _fillgrid(struct state *st)
996 unsigned int gridc, n, add;
998 gridc=st->gridx*st->dline[st->li].y+st->dline[st->li].x;
999 add = (st->dline[st->li].hv) ? 1 : st->gridx;
1000 for (n=0; n<=st->dline[st->li].len; n++) {
1003 if (!st->grid[gridc].line) {
1005 st->grid[gridc].line=st->li;
1007 if (st->dline[st->li].hv) {
1009 st->grid[gridc].hr=st->li;
1010 if (n<st->dline[st->li].len)
1011 st->grid[gridc].hl=st->li;
1014 st->grid[gridc].vd=st->li;
1015 if (n<st->dline[st->li].len)
1016 st->grid[gridc].vu=st->li;
1018 if (st->fi>=st->gridn) {
1026 _newline(struct state *st)
1028 int bl, bz, dir, lt, x, y, z;
1031 z=st->zlist[st->zi];
1035 dir=_findopen(st,x,y,z);
1037 if (!st->grid[z].line) {
1038 /* this is an empty space, make a new line unless nothing is open around it */
1039 if (dir==DIR_NONE) {
1040 /* nothing is open, force a len 1 branch in any direction */
1042 while ((dir==DIR_NONE) ||
1043 ((dir==DIR_UP) && (!y)) ||
1044 ((dir==DIR_DOWN) && (y+1==st->gridy)) ||
1045 ((dir==DIR_LEFT) && (!x)) ||
1046 ((dir==DIR_RIGHT) && (x+1==st->gridx))) {
1049 bz = (dir==DIR_UP) ? z-st->gridx : (dir==DIR_DOWN) ? z+st->gridx : (dir==DIR_LEFT) ? z-1 : z+1;
1050 bl = st->grid[bz].line;
1051 } else if ((st->bnratio>1) && (st->bln>0) &&
1052 (st->olen<st->maxlen) && (random()%st->bnratio)) {
1053 /* branch into blocking line */
1057 /* make a new line and new object */
1062 /* this is a filled space, make a branch unless nothing is open around it */
1065 /* make a branch out of this line */
1067 bl=st->grid[z].line;
1070 st->dline[st->li].len = (lt==LINE_FORCE) ? 1 : (lt==LINE_BRIN) ?
1071 st->olen+1 : (!st->forcemax) ? st->olen : 1+random()%st->olen;
1072 st->dline[st->li].x=x;
1074 st->dline[st->li].x-=st->dline[st->li].len;
1075 st->dline[st->li].y=y;
1077 st->dline[st->li].y-=st->dline[st->li].len;
1078 st->dline[st->li].hv = ((dir==DIR_LEFT) || (dir==DIR_RIGHT)) ?
1080 st->dline[st->li].obj = (lt==LINE_NEW) ? st->oi :
1082 st->dline[st->li].color = (lt==LINE_NEW) ?
1083 (_getcolor(st,x,y))%st->ncolors : st->dline[bl].color;
1084 st->dline[st->li].deo=(_getdeo(st,x,y,st->dmap,1) +
1085 (random()%st->dvar) + (random()%st->dvar))*st->ddir;
1086 st->dline[st->li].ndol=0;
1091 _create_screen(struct state *st)
1093 while(!st->grid_full)
1095 qsort(st->dline, st->li+1, sizeof(struct lineStruct), _comparedeo);
1096 /*st->lpu=st->li/20/((6-st->speed)*3);
1097 Used to use a computed lpu, lines per update to control draw speed
1098 draw 1/lpu of the lines before each XSync which takes a split second
1099 the higher the lpu, the quicker the screen draws. This worked somewhat
1100 after the 4->5 update, however with the Mac updating so much more slowly,
1101 values tuned for it draw the screen in a blink on Linux. Therefore we
1102 draw 1/200th of the screen with each update and sleep, if necessary */
1103 st->lpu = (st->dialog) ? st->li/50 : st->li/200;
1104 if (!st->lpu) st->lpu = 1;
1106 st->mode=MODE_ERASE;
1110 _fill_outline(struct state *st, int di)
1116 x=st->dline[di].x*st->lwid+1;
1117 y=st->dline[di].y*st->lwid+1;
1118 if (st->dline[di].hv) {
1119 w=(st->dline[di].len+1)*st->lwid-3;
1123 h=(st->dline[di].len+1)*st->lwid-3;
1125 XFillRectangle (st->display, st->window, st->bgc, x, y, w, h);
1129 _XFillRectangle(struct state *st, int di, int adj)
1131 int a, b, x, y, w, h;
1133 x=st->dline[di].x*st->lwid;
1134 y=st->dline[di].y*st->lwid;
1135 if (st->dline[di].hv) {
1136 w=(st->dline[di].len+1)*st->lwid-1;
1140 h=(st->dline[di].len+1)*st->lwid-1;
1157 XFillRectangle(st->display, st->window, st->fgc, x, y, w, h);
1159 if (h<st->lwid) { /* horizontal */
1161 for (b=0; b<=a; b++)
1162 XFillRectangle(st->display, st->window, st->fgc,
1163 x+b, y+a-b, w-b*2, h-((a-b)*2));
1164 } else { /* vertical */
1166 for (b=0; b<=a; b++)
1167 XFillRectangle(st->display, st->window, st->fgc,
1168 x+a-b, y+b, w-((a-b)*2), h-b*2);
1174 _XFillTriangle(struct state *st, int color, int x1, int y1, int x2, int y2,
1185 XSetForeground(st->display, st->fgc, st->colors[color].pixel);
1186 XFillPolygon (st->display, st->window, st->fgc, points, 3, Convex,
1191 _XFillPolygon4(struct state *st, int color, int x1, int y1, int x2, int y2,
1192 int x3, int y3, int x4, int y4)
1204 XSetForeground(st->display, st->fgc, st->colors[color].pixel);
1205 XFillPolygon (st->display, st->window, st->fgc, points, 4, Convex,
1210 _draw_tiled(struct state *st, int color)
1212 int a, c, d, x, y, z, m1, m2, lr, nl, w, h;
1213 a = (st->dline[st->di].hv) ? 1 : st->gridx;
1214 z = st->dline[st->di].y*st->gridx+st->dline[st->di].x;
1215 m1 = (st->lwid-1)/2;
1220 /* draw tiles one grid cell at a time */
1221 for (c=0; c<=st->dline[st->di].len; c++) {
1222 if (st->dline[st->di].hv) {
1223 x = (st->dline[st->di].x+c)*st->lwid;
1224 y = st->dline[st->di].y*st->lwid;
1226 st->grid[z].dhr=st->di;
1227 if (c<st->dline[st->di].len)
1228 st->grid[z].dhl=st->di;
1230 x = st->dline[st->di].x*st->lwid;
1231 y = (st->dline[st->di].y+c)*st->lwid;
1233 st->grid[z].dvd=st->di;
1234 if (c<st->dline[st->di].len)
1235 st->grid[z].dvu=st->di;
1238 if (st->grid[z].dhl)
1240 if (st->grid[z].dhr)
1242 if (st->grid[z].dvu)
1244 if (st->grid[z].dvd)
1246 /* draw line base */
1249 case 2: /* vertical */
1256 h = ((d==1) || (d==5)) ? lr : nl;
1257 XSetForeground(st->display, st->fgc,
1258 st->colors[color].pixel);
1259 XFillRectangle (st->display, st->window, st->fgc,
1261 XSetForeground(st->display, st->fgc,
1262 st->colors[color+3].pixel);
1263 XFillRectangle (st->display, st->window, st->fgc,
1267 case 8: /* horizontal */
1273 w = (d==4) ? lr : nl;
1274 XSetForeground(st->display, st->fgc,
1275 st->colors[color+1].pixel);
1276 XFillRectangle (st->display, st->window, st->fgc,
1278 XSetForeground(st->display, st->fgc,
1279 st->colors[color+2].pixel);
1280 XFillRectangle (st->display, st->window, st->fgc,
1286 case 1: /* bottom end ^ */
1287 _XFillTriangle(st,color+2, x, y+lr, x+lr, y+lr, x+m2, y+m2);
1289 case 2: /* top end \/ */
1290 _XFillTriangle(st,color+1, x, y, x+lr, y, x+m2, y+m2);
1292 case 4: /* right end < */
1293 _XFillTriangle(st,color+3, x+lr, y, x+lr, y+lr, x+m2, y+m2);
1295 case 5: /* LR corner */
1296 _XFillTriangle(st,color+1, x, y+m2, x+m2, y+m2, x, y);
1297 _XFillPolygon4(st,color+2, x, y+m2, x+m2, y+m2, x+lr, y+lr, x, y+lr);
1299 case 6: /* UR corner */
1300 _XFillPolygon4(st,color+1, x, y+m2, x+m2, y+m2, x+lr, y, x, y);
1301 _XFillTriangle(st,color+2, x, y+m2, x+m2, y+m2, x, y+lr);
1303 case 7: /* T > into line */
1304 _XFillTriangle(st,color+1, x, y+m2, x+m2, y+m2, x, y);
1305 _XFillTriangle(st,color+2, x, y+m2, x+m2, y+m2, x, y+lr);
1307 case 8: /* left end > */
1308 _XFillTriangle(st,color, x, y, x, y+lr, x+m2, y+m2);
1310 case 9: /* LL corner */
1311 _XFillPolygon4(st,color, x+m2, y, x+m2, y+m2, x, y+lr, x, y);
1312 _XFillTriangle(st,color+3, x+m2, y, x+m2, y+m2, x+lr, y);
1314 case 10: /* UL corner */
1315 _XFillPolygon4(st,color, x+m2, y+nl, x+m2, y+m2, x, y, x, y+nl);
1316 _XFillPolygon4(st,color+3, x+m2, y+nl, x+m2, y+m2, x+lr, y+lr, x+lr, y+nl);
1318 case 11: /* T < into line */
1319 _XFillPolygon4(st,color+1, x+nl, y+m2, x+m2, y+m2, x+lr, y, x+nl, y);
1320 _XFillPolygon4(st,color+2, x+nl, y+m2, x+m2, y+m2, x+lr, y+lr, x+nl, y+lr);
1322 case 13: /* T \/ into line */
1323 _XFillTriangle(st,color, x+m2, y, x+m2, y+m2, x, y);
1324 _XFillTriangle(st,color+3, x+m2, y, x+m2, y+m2, x+lr, y);
1326 case 14: /* T ^ into line */
1327 _XFillPolygon4(st,color, x+m2, y+nl, x+m2, y+m2, x, y+lr, x, y+nl);
1328 _XFillPolygon4(st,color+3, x+m2, y+nl, x+m2, y+m2, x+lr, y+lr, x+lr, y+nl);
1330 case 15: /* X intersection */
1331 _XFillTriangle(st,color+1, x, y+m2, x+m2, y+m2, x, y);
1332 _XFillTriangle(st,color+2, x, y+m2, x+m2, y+m2, x, y+lr);
1333 _XFillPolygon4(st,color+1, x+nl, y+m2, x+m2, y+m2, x+lr, y, x+nl, y);
1334 _XFillPolygon4(st,color+2, x+nl, y+m2, x+m2, y+m2, x+lr, y+lr, x+nl, y+lr);
1342 _mselapsed(struct state *st)
1345 gettimeofday(&t, NULL);
1346 t.tv_sec -= st->time.tv_sec;
1347 t.tv_usec -= st->time.tv_usec;
1348 return ((long)t.tv_sec*1000000+t.tv_usec);
1352 _draw_lines(struct state *st)
1354 int n, z, a, color, sh, di;
1356 for (a=0; a<=st->oi; a++)
1359 for (st->di=st->bi; st->di<_min(st->li+1,st->bi+st->lpu); st->di++) {
1360 color=(st->dline[st->di].color%st->ncolors)*st->shades;
1361 XSetForeground(st->display, st->fgc, st->colors[color].pixel);
1365 st->dline[st->di].ndol=st->fdol[st->dline[st->di].obj];
1366 st->fdol[st->dline[st->di].obj]=st->di;
1367 for (sh=0; sh<st->lwid/2; sh++) {
1368 XSetForeground(st->display, st->fgc,
1369 st->colors[color+sh].pixel);
1372 _XFillRectangle(st,di,sh);
1373 di=st->dline[di].ndol;
1378 st->dline[st->di].ndol=st->fdol[st->dline[st->di].obj];
1379 st->fdol[st->dline[st->di].obj]=st->di;
1380 for (sh=0; sh<st->lwid/2; sh++) {
1381 XSetForeground(st->display, st->fgc,
1382 st->colors[color+(st->lwid/2)-sh-1].pixel);
1385 _XFillRectangle(st,di,sh);
1386 di=st->dline[di].ndol;
1391 _draw_tiled(st,color);
1393 default: /* D3D_NONE */
1394 _XFillRectangle(st,st->di,0);
1396 _fill_outline(st, st->di);
1397 z=st->dline[st->di].y*st->gridx+st->dline[st->di].x;
1398 a = (st->dline[st->di].hv) ? 1 : st->gridx;
1399 for (n=0; n<=st->dline[st->di].len; n++) {
1400 _fill_outline(st, st->grid[z].dhl);
1401 _fill_outline(st, st->grid[z].dhr);
1402 _fill_outline(st, st->grid[z].dvu);
1403 _fill_outline(st, st->grid[z].dvd);
1404 if (st->dline[st->di].hv) {
1406 st->grid[z].dhr=st->di;
1407 if (n<st->dline[st->di].len)
1408 st->grid[z].dhl=st->di;
1411 st->grid[z].dvd=st->di;
1412 if (n<st->dline[st->di].len)
1413 st->grid[z].dvu=st->di;
1421 if (st->di>st->li) {
1423 st->mode=MODE_CREATE;
1430 _erase_lines(struct state *st)
1434 for (st->di=st->bi; st->di<_min(st->eli+1,st->bi+st->elpu); st->di++) {
1435 if (st->eline[st->di].hv) {
1436 XFillRectangle (st->display, st->window, st->bgc,
1437 st->eline[st->di].x*st->elwid,
1438 st->eline[st->di].y*st->elwid,
1439 (st->eline[st->di].len+1)*st->elwid, st->elwid);
1441 XFillRectangle (st->display, st->window, st->bgc,
1442 st->eline[st->di].x*st->elwid,
1443 st->eline[st->di].y*st->elwid,
1444 st->elwid, (st->eline[st->di].len+1)*st->elwid);
1446 if (st->di==st->eli) /* clear just in case */
1447 XFillRectangle(st->display, st->window, st->bgc, 0, 0,
1448 st->xgwa.width, st->xgwa.height);
1450 if (st->di>st->eli) {
1453 st->mode=MODE_CREATE;
1463 abstractile_init(Display *display, Window window)
1465 struct state *st = (struct state *) calloc (1, sizeof(*st));
1467 /* struct utsname os;*/
1469 char *tile = get_string_resource(display, "tile", "Tile");
1470 if (tile && !strcmp(tile, "random")) st->tile = TILE_RANDOM;
1471 else if (tile && !strcmp(tile, "flat")) st->tile = TILE_FLAT;
1472 else if (tile && !strcmp(tile, "thin")) st->tile = TILE_THIN;
1473 else if (tile && !strcmp(tile, "outline")) st->tile = TILE_OUTLINE;
1474 else if (tile && !strcmp(tile, "block")) st->tile = TILE_BLOCK;
1475 else if (tile && !strcmp(tile, "neon")) st->tile = TILE_NEON;
1476 else if (tile && !strcmp(tile, "tiled")) st->tile = TILE_TILED;
1478 if (tile && *tile && !!strcmp(tile, "random"))
1479 fprintf(stderr, "%s: unknown tile option %s\n", progname, tile);
1480 st->tile = TILE_RANDOM;
1483 st->speed = get_integer_resource(display, "speed", "Integer");
1484 if (st->speed < 0) st->speed = 0;
1485 if (st->speed > 5) st->speed = 5;
1486 st->sleep = get_integer_resource(display, "sleep", "Integer");
1487 if (st->sleep < 0) st->sleep = 0;
1488 if (st->sleep > 60) st->sleep = 60;
1490 st->display=display;
1493 /* get screen size and create Graphics Contexts */
1494 XGetWindowAttributes (display, window, &st->xgwa);
1495 gcv.foreground = get_pixel_resource(display, st->xgwa.colormap,
1496 "foreground", "Foreground");
1497 st->fgc = XCreateGC (display, window, GCForeground, &gcv);
1498 gcv.foreground = get_pixel_resource(display, st->xgwa.colormap,
1499 "background", "Background");
1500 st->bgc = XCreateGC (display, window, GCForeground, &gcv);
1502 /* Um, no. This is obscene. -jwz.
1504 st->newcols=((!strcmp(os.sysname,"Linux")) || (!strcmp(os.sysname,"Darwin")))
1509 st->mode=MODE_CREATE;
1515 static unsigned long
1516 abstractile_draw (Display *dpy, Window window, void *closure)
1518 struct state *st = (struct state *) closure;
1521 gettimeofday(&st->time, NULL);
1523 /* If the window is too small, do nothing, sorry! */
1524 if (st->xgwa.width > 20 && st->xgwa.height > 20) {
1539 usleep = ((!st->ii) && (st->mode==MODE_CREATE)) ? 0 :
1540 (st->mode==MODE_CREATE) ? st->sleep*1000000-mse :
1541 /* speed=0-5, goal is 10,8,6,4,2,0 sec normal and 5,4,3,2,1,0 dialog */
1542 (5-st->speed)*(2-st->dialog)*100000/st->lpu-mse;
1549 abstractile_reshape (Display *dpy, Window window, void *closure,
1550 unsigned int w, unsigned int h)
1552 struct state *st = (struct state *) closure;
1554 st->xgwa.height = h;
1555 if (w*h>st->max_wxh)
1560 abstractile_event (Display *dpy, Window window, void *closure, XEvent *event)
1566 abstractile_free (Display *dpy, Window window, void *closure)
1568 struct state *st = (struct state *) closure;
1572 static const char *abstractile_defaults [] = {
1573 ".background: black",
1574 ".foreground: white",
1582 static XrmOptionDescRec abstractile_options [] = {
1583 { "-sleep", ".sleep", XrmoptionSepArg, 0 },
1584 { "-speed", ".speed", XrmoptionSepArg, 0 },
1585 { "-tile", ".tile", XrmoptionSepArg, 0 },
1589 XSCREENSAVER_MODULE ("Abstractile", abstractile)