Circuit Trace Generators - src/index-v7.html

Overview Files Skills Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
master
AdityaAngajala Publish 0.3.0 6d39e2e 2mo ago
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053
<!doctype html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1" />
    <title>Procedural Circuit Background</title>
    <style>
      :root {
        color-scheme: dark;
        --bg: #0d1117;
        --surface: #161b22;
        --border: #30363d;
        --text: #e6edf3;
        --muted: #8b949e;
        --accent: #00b8b0;
        --accent-bright: #00e6dc;
      }

      * { box-sizing: border-box; }
      html, body { min-height: 100%; margin: 0; }
      body {
        background: var(--bg);
        color: var(--text);
        font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
      }

      .hero {
        --circuit-hole: var(--bg);
        position: relative;
        min-height: 100svh;
        overflow: hidden;
        display: grid;
        place-items: center;
        isolation: isolate;
      }

      .hero[data-reveal-system="scroll"] {
        min-height: 300svh;
        place-items: start center;
      }

      .hero[data-reveal-system="scroll"] main {
        position: relative;
        top: auto;
        min-height: 100svh;
        display: grid;
        place-items: center;
      }

      .circuit-layer {
        position: absolute;
        inset: 0;
        z-index: 0;
      }

      .glow {
        --atmosphere-strength: 1;
        position: absolute;
        inset: 0;
        z-index: 1;
        pointer-events: none;
        background:
          radial-gradient(ellipse 46% 34% at 50% 45%, rgba(13, 17, 23, .64), rgba(13, 17, 23, .34) 48%, transparent 100%),
          linear-gradient(to top, var(--bg) 0, transparent 13rem);
      }

      .glow::before {
        content: "";
        position: absolute;
        inset: -12%;
        background:
          radial-gradient(ellipse 28% 38% at 22% 48%, rgba(0, 230, 220, .06), transparent 72%),
          radial-gradient(ellipse 34% 42% at 58% 46%, rgba(57, 184, 255, .045), transparent 72%),
          radial-gradient(ellipse 30% 38% at 84% 52%, rgba(140, 107, 247, .045), transparent 72%);
        mix-blend-mode: screen;
        opacity: calc(var(--atmosphere-strength) * .72);
        filter: blur(34px);
      }

      .hero[data-motion="on"][data-animation-system="conductor"] .glow {
        background:
          radial-gradient(circle at 52% 44%, rgba(0, 230, 220, .06), transparent 34%),
          linear-gradient(to top, var(--bg) 0, transparent 12rem);
        animation: atmosphere-breathe 8s ease-in-out infinite alternate;
        will-change: opacity, filter;
      }

      .hero[data-motion="on"][data-animation-system="conductor"] .glow::before {
        inset: -18%;
        background:
          radial-gradient(circle at 28% 38%, rgba(0, 230, 220, .075), transparent 20%),
          radial-gradient(circle at 72% 58%, rgba(100, 171, 255, .055), transparent 24%),
          radial-gradient(circle at 52% 82%, rgba(197, 179, 255, .04), transparent 18%);
        opacity: 1;
        filter: none;
        animation: atmosphere-drift 19s cubic-bezier(.45,.05,.55,.95) infinite alternate;
        will-change: transform;
      }

      @keyframes atmosphere-breathe {
        from { opacity: var(--atmosphere-low, .66); filter: saturate(.82); }
        to { opacity: var(--atmosphere-high, 1); filter: saturate(1.18); }
      }

      @keyframes atmosphere-drift {
        0% { transform: translate3d(-3%, -2%, 0) scale(1); }
        45% { transform: translate3d(4%, 1%, 0) scale(1.08); }
        100% { transform: translate3d(-1%, 5%, 0) scale(1.03); }
      }

      main {
        position: relative;
        z-index: 2;
        width: min(760px, calc(100% - 40px));
        text-align: center;
        padding: 80px 0 180px;
      }

      .hero-copy { position: relative; }

      .eyebrow {
        margin: 0 0 20px;
        color: var(--accent-bright);
        font: 600 12px/1.3 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
        letter-spacing: .18em;
        text-transform: uppercase;
      }

      h1 {
        margin: 0;
        font-size: clamp(3.2rem, 10vw, 7.5rem);
        line-height: .9;
        letter-spacing: -.055em;
        color: transparent;
        background: linear-gradient(100deg, #e6edf3 4%, #00e6dc 38%, #39b8ff 66%, #8c6bf7 96%);
        background-clip: text;
        filter: drop-shadow(0 0 .4em rgba(255,255,255,.18));
      }

      .lede {
        max-width: 570px;
        margin: 28px auto 0;
        color: #bac6d3;
        font-size: clamp(1rem, 2vw, 1.25rem);
        line-height: 1.6;
      }

      .hint {
        margin-top: 24px;
        color: var(--muted);
        font: 500 12px/1.4 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
      }

      .controls {
        position: fixed;
        left: 50%;
        bottom: 12px;
        z-index: 5;
        width: min(1180px, calc(100% - 24px));
        transform: translateX(-50%);
        display: grid;
        grid-template-columns: repeat(12, minmax(0, 1fr));
        align-items: end;
        gap: 8px;
        padding: 10px;
        border: 1px solid rgba(48, 54, 61, .9);
        border-radius: 12px;
        background: rgba(22, 27, 34, .88);
        box-shadow: 0 18px 70px rgba(0,0,0,.38);
        backdrop-filter: blur(18px);
      }

      label { min-width: 0; display: grid; gap: 4px; color: var(--muted); font-size: 10px; }
      label > span { display: flex; justify-content: space-between; gap: 3px; white-space: nowrap; }
      input[type="text"] {
        width: 100%;
        height: 32px;
        padding: 0 8px;
        color: var(--text);
        border: 1px solid var(--border);
        border-radius: 8px;
        outline: none;
        background: #0d1117;
        font: 500 11px ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
      }
      input[type="text"]:focus { border-color: var(--accent); }
      input[type="range"] { width: 100%; accent-color: var(--accent); }
      select {
        width: 100%;
        height: 32px;
        padding: 0 28px 0 8px;
        color: var(--text);
        border: 1px solid var(--border);
        border-radius: 8px;
        outline: none;
        background: #0d1117;
        font: 600 11px system-ui, sans-serif;
      }
      select:focus { border-color: var(--accent); }

      button {
        height: 32px;
        padding: 0 11px;
        color: var(--text);
        border: 1px solid var(--border);
        border-radius: 8px;
        background: #21262d;
        font: 700 12px system-ui, sans-serif;
        cursor: pointer;
      }
      button:hover { border-color: #59636e; background: #282e36; }
      button:disabled { opacity: .48; cursor: default; }
      button:disabled:hover { border-color: var(--border); background: #21262d; }
      button.primary { color: #062d2b; border-color: var(--accent); background: var(--accent); }
      button.primary:hover { background: var(--accent-bright); }

      .preset-bar {
        grid-column: 1 / -1;
        display: flex;
        align-items: center;
        gap: 6px;
        min-width: 0;
      }
      .preset-title {
        margin-right: 3px;
        color: var(--muted);
        font: 700 11px/1 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
        letter-spacing: .12em;
        text-transform: uppercase;
      }
      .preset-bar button {
        height: 28px;
        padding: 0 10px;
        color: #aab5c1;
        font-size: 11px;
      }
      .preset-bar button[aria-pressed="true"] {
        color: #082f2d;
        border-color: var(--accent);
        background: var(--accent);
      }
      .parameter-panel {
        grid-column: 1 / -1;
        display: grid;
        grid-template-columns: repeat(12, minmax(0, 1fr));
        align-items: end;
        gap: 8px;
      }
      .parameter-panel[hidden] { display: none; }
      .reveal-options-panel {
        position: absolute;
        right: 10px;
        bottom: calc(100% + 8px);
        width: min(760px, calc(100vw - 44px));
        max-height: calc(100svh - 116px);
        overflow-y: auto;
        padding: 12px;
        border: 1px solid rgba(48, 54, 61, .96);
        border-radius: 12px;
        background: rgba(18, 23, 30, .97);
        box-shadow: 0 18px 70px rgba(0,0,0,.48);
        backdrop-filter: blur(20px);
      }
      .reveal-options-panel[hidden] { display: none; }
      .reveal-options-heading {
        display: flex;
        align-items: baseline;
        justify-content: space-between;
        gap: 12px;
        margin-bottom: 10px;
      }
      .reveal-options-heading strong {
        color: var(--text);
        font: 700 11px/1 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
        letter-spacing: .1em;
        text-transform: uppercase;
      }
      .reveal-options-heading span { color: var(--muted); font-size: 10px; }
      .reveal-options-grid {
        display: grid;
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 10px 12px;
      }
      .reveal-option[hidden] { display: none; }
      .reveal-option output { color: #c4d0dc; }
      /* A quiet text toggle, not a button: it opens a drawer, it does not pick a preset. */
      .preset-bar .panel-toggle {
        display: inline-flex;
        align-items: center;
        gap: 4px;
        width: auto;
        height: 28px;
        padding: 0 2px;
        margin-left: 4px;
        color: var(--muted);
        border: 0;
        border-radius: 0;
        background: none;
        font: 600 11px system-ui, sans-serif;
      }
      .preset-bar .panel-toggle:hover { color: var(--text); border: 0; background: none; }
      .preset-bar .panel-toggle:focus-visible { outline: 1px solid var(--accent); outline-offset: 3px; }
      .preset-bar .panel-toggle[aria-expanded="true"] { color: var(--accent-bright); }
      .panel-toggle .chevron { display: inline-block; font-size: 9px; line-height: 1; transition: transform .15s ease; }
      .panel-toggle[aria-expanded="true"] .chevron { transform: rotate(180deg); }

      .motion-bar {
        padding-top: 8px;
        border-top: 1px solid rgba(48, 54, 61, .72);
      }
      .preset-group {
        display: flex;
        align-items: center;
        gap: 6px;
        min-width: 0;
      }
      .group-divider {
        align-self: stretch;
        width: 1px;
        min-height: 22px;
        margin: 0 2px;
        background: rgba(48, 54, 61, .8);
      }
      .reveal-group[data-disabled="true"] { opacity: .48; }
      .reveal-group[data-disabled="true"] button { pointer-events: none; }
      .preset-bar .replay-button {
        padding-inline: 7px;
        color: var(--muted);
        border-style: dashed;
      }
      .movement-power {
        flex: 1 1 150px;
        max-width: 180px;
        margin-left: 6px;
      }
      .movement-power input { margin: 0; }
      .trace-count {
        margin-left: auto;
        color: var(--accent-bright);
        font: 600 11px/1 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
        white-space: nowrap;
      }

      @media (max-width: 1180px) {
        .controls {
          grid-template-columns: repeat(6, minmax(0, 1fr));
          max-height: calc(100svh - 24px);
          overflow-y: auto;
        }
        .parameter-panel { grid-template-columns: repeat(6, minmax(0, 1fr)); }
        .controls:has(.reveal-options-panel:not([hidden])) { overflow: visible; }
        .preset-bar { flex-wrap: wrap; }
        .preset-group { flex-wrap: wrap; }
      }

      @media (max-width: 760px) {
        .controls { grid-template-columns: 1fr 1fr; bottom: 12px; }
        .parameter-panel { grid-template-columns: 1fr 1fr; }
        .controls button { width: 100%; }
        .preset-title { width: 100%; }
        .trace-count { margin-left: 0; }
        main { padding-bottom: 360px; }
        .reveal-options-panel {
          position: absolute;
          left: 0;
          right: 0;
          bottom: calc(100% + 8px);
          width: auto;
          max-height: calc(100svh - 156px);
          overflow-y: auto;
          border-radius: 16px 16px 10px 10px;
        }
        .reveal-options-grid { grid-template-columns: 1fr 1fr; }
      }

      @media (max-width: 460px) {
        .reveal-options-grid { grid-template-columns: 1fr; }
      }

      @media (prefers-reduced-motion: reduce) {
        .glow, .glow::before { animation: none; }
        .panel-toggle .chevron { transition: none; }
      }
    </style>
  </head>
  <body>
    <section class="hero" id="hero">
      <div class="circuit-layer" id="circuit"></div>
      <div class="glow" aria-hidden="true"></div>
      <main>
        <div class="hero-copy" data-circuit-reading-zone>
          <p class="eyebrow">Seeded SVG generator</p>
          <h1>Live circuitry</h1>
          <p class="lede">
            A procedural version of the Nitrogen hero pattern: dense routed traces, 45° chamfers,
            annular vias, continuous trace packing, and separate reveal and ambient animation systems.
          </p>
          <p class="hint" id="motionHint">All traces arrive fully routed · no ambient movement</p>
        </div>
      </main>
    </section>

    <form class="controls" id="controls">
      <div class="preset-bar" aria-label="Generator presets">
        <span class="preset-title">Generation</span>
        <button type="button" data-preset="original" aria-pressed="true">Original match</button>
        <button type="button" data-preset="dense" aria-pressed="false">Dense</button>
        <button type="button" data-preset="diagonal" aria-pressed="false">Diagonal sweep</button>
        <button type="button" data-preset="swirl" aria-pressed="false">Broad swirl</button>
        <button type="button" data-preset="sparse" aria-pressed="false">Sparse</button>
        <button type="button" class="panel-toggle" id="parameterToggle" aria-expanded="false" aria-controls="parameterPanel">
          Parameters<span class="chevron" aria-hidden="true">▾</span>
        </button>
        <output class="trace-count" id="traceCount">235 traces</output>
      </div>
      <div class="parameter-panel" id="parameterPanel" hidden>
      <label>
        Seed
        <input id="seed" type="text" value="nitrogen" autocomplete="off" spellcheck="false" />
      </label>
      <label>
        <span>Density <output id="fillValue">74.4%</output></span>
        <input id="fill" type="range" min="0.35" max="0.76" step="0.001" value="0.744" />
      </label>
      <label>
        <span>Avg length <output id="routeLengthValue">1.14×</output></span>
        <input id="routeLength" type="range" min="0.55" max="2.25" step="0.01" value="1.14" />
      </label>
      <label>
        <span>Primary flow <output id="horizontalFlowValue">90%</output></span>
        <input id="horizontalFlow" type="range" min="0.3" max="0.98" step="0.01" value="0.9" />
      </label>
      <label>
        <span>Angle <output id="flowAngleValue">153°</output></span>
        <input id="flowAngle" type="range" min="0" max="180" step="1" value="153" />
      </label>
      <label>
        <span>Diagonal <output id="diagonalFlowValue">100%</output></span>
        <input id="diagonalFlow" type="range" min="0" max="1" step="0.01" value="1" />
      </label>
      <label>
        <span>Long flow <output id="longFlowValue">31%</output></span>
        <input id="longFlow" type="range" min="0" max="0.36" step="0.01" value="0.31" />
      </label>
      <label>
        <span>Swirl <output id="swirlValue">82%</output></span>
        <input id="swirl" type="range" min="0" max="1.4" step="0.01" value="0.82" />
      </label>
      <label>
        <span>Swirl scale <output id="swirlScaleValue">0.72×</output></span>
        <input id="swirlScale" type="range" min="0.25" max="1.4" step="0.01" value="0.72" />
      </label>
      <label>
        <span>Jog size <output id="jogLengthValue">0.42×</output></span>
        <input id="jogLength" type="range" min="0.3" max="1.8" step="0.01" value="0.42" />
      </label>
      <label>
        <span>Channel pull <output id="channelAttractionValue">150%</output></span>
        <input id="channelAttraction" type="range" min="0" max="1.5" step="0.01" value="1.5" />
      </label>
      <label>
        <span>Scale <output id="featureScaleValue">1.37×</output></span>
        <input id="featureScale" type="range" min="0.55" max="2" step="0.01" value="1.37" />
      </label>
      </div>
      <div class="preset-bar motion-bar" aria-label="Trace reveal and animation presets">
        <div class="preset-group reveal-group" id="revealGroup" aria-label="Trace reveal presets">
          <span class="preset-title">Reveal</span>
          <button type="button" data-reveal-preset="instant" aria-pressed="true">Instant</button>
          <button type="button" data-reveal-preset="flow" aria-pressed="false">Flow sweep</button>
          <button type="button" data-reveal-preset="scroll" aria-pressed="false">Scroll weave</button>
          <button class="replay-button" id="replayReveal" type="button">Replay</button>
          <button type="button" class="panel-toggle" id="revealOptionsToggle" aria-expanded="false" aria-controls="revealOptionsPanel">
            Options<span class="chevron" aria-hidden="true">▾</span>
          </button>
        </div>
        <span class="group-divider" aria-hidden="true"></span>
        <div class="preset-group animation-group" aria-label="Ambient animation presets">
          <span class="preset-title">Animation</span>
          <button type="button" data-animation-preset="none" aria-pressed="true">None</button>
          <button type="button" data-animation-preset="reflection" aria-pressed="false">Reflection</button>
          <button type="button" data-animation-preset="conductor" aria-pressed="false">Conductor</button>
          <button type="button" data-animation-preset="routed" aria-pressed="false">Routed field</button>
          <button type="button" data-animation-preset="handshake" aria-pressed="false">Handshake</button>
        </div>
        <label class="movement-power">
          <span>Movement power <output id="livelinessValue">0%</output></span>
          <input id="liveliness" type="range" min="0" max="1.5" step="0.01" value="0" />
        </label>
        <button class="primary" type="submit">Generate</button>
        <button id="download" type="button">Export SVG</button>
      </div>
      <section class="reveal-options-panel" id="revealOptionsPanel" aria-label="Reveal options" hidden>
        <div class="reveal-options-heading">
          <strong id="revealOptionsTitle">Flow sweep options</strong>
          <span>Changes apply to this reveal preset</span>
        </div>
        <div class="reveal-options-grid">
          <label class="reveal-option" data-reveal-for="flow scroll">
            Spawn pattern
            <select id="spawnMode">
              <option value="flow">Directional flow</option>
              <option value="radial">Radial</option>
              <option value="edges">From edges</option>
              <option value="scatter">Scatter</option>
            </select>
          </label>
          <label class="reveal-option" data-reveal-for="flow scroll">
            <span>Spawn angle <output id="spawnAngleValue">90°</output></span>
            <input id="spawnAngle" type="range" min="0" max="359" step="1" value="90" />
          </label>
          <label class="reveal-option" data-reveal-for="flow scroll">
            <span>Spawn swirl <output id="spawnSwirlValue">7.5%</output></span>
            <input id="spawnSwirl" type="range" min="0" max="0.35" step="0.005" value="0.075" />
          </label>
          <label class="reveal-option" data-reveal-for="flow scroll">
            <span>Trace glow <output id="revealGlowValue">88%</output></span>
            <input id="revealGlow" type="range" min="0" max="1" step="0.01" value="0.88" />
          </label>
          <label class="reveal-option" data-reveal-for="flow">
            <span>Sweep duration <output id="revealDurationValue">7.6 s</output></span>
            <input id="revealDuration" type="range" min="2600" max="18000" step="100" value="7600" />
          </label>
          <label class="reveal-option" data-reveal-for="flow">
            <span>Active traces <output id="revealMaxActiveTracesValue">48</output></span>
            <input id="revealMaxActiveTraces" type="range" min="12" max="96" step="1" value="48" />
          </label>
          <label class="reveal-option" data-reveal-for="scroll">
            <span>Trace duration <output id="traceDurationValue">0.95 s</output></span>
            <input id="traceDuration" type="range" min="350" max="2000" step="25" value="950" />
          </label>
          <label class="reveal-option" data-reveal-for="scroll">
            <span>Launch rate <output id="revealLaunchRateValue">24/s</output></span>
            <input id="revealLaunchRate" type="range" min="6" max="80" step="1" value="24" />
          </label>
          <label class="reveal-option" data-reveal-for="scroll">
            <span>Active traces <output id="maxActiveTracesValue">72</output></span>
            <input id="maxActiveTraces" type="range" min="12" max="160" step="1" value="72" />
          </label>
          <label class="reveal-option" data-reveal-for="scroll">
            <span>Speed response <output id="scrollSpeedResponseValue">60%</output></span>
            <input id="scrollSpeedResponse" type="range" min="0" max="1" step="0.01" value="0.6" />
          </label>
          <label class="reveal-option" data-reveal-for="scroll">
            <span>Reveal lead <output id="unlockLeadValue">2.5%</output></span>
            <input id="unlockLead" type="range" min="0" max="0.2" step="0.005" value="0.025" />
          </label>
          <label class="reveal-option" data-reveal-for="scroll">
            Continue generation
            <select id="continuousGeneration">
              <option value="true">On</option>
              <option value="false">Off</option>
            </select>
          </label>
          <label class="reveal-option" data-reveal-for="scroll">
            <span>Generate ahead <output id="generationAheadScreensValue">2 screens</output></span>
            <input id="generationAheadScreens" type="range" min="1" max="4" step="0.25" value="2" />
          </label>
        </div>
      </section>
    </form>

    <script type="module">
      import { ANIMATION_PRESETS, REVEAL_PRESETS, createCircuitBackground } from "./circuit-background-v7.js?v=1";

      const mount = document.querySelector("#circuit");
      const controls = document.querySelector("#controls");
      const generationPresetButtons = [...document.querySelectorAll("[data-preset]")];
      const revealPresetButtons = [...document.querySelectorAll("[data-reveal-preset]")];
      const animationPresetButtons = [...document.querySelectorAll("[data-animation-preset]")];
      const traceCount = document.querySelector("#traceCount");
      const hero = document.querySelector("#hero");
      const glow = document.querySelector(".glow");
      const seed = document.querySelector("#seed");
      const parameterToggle = document.querySelector("#parameterToggle");
      const parameterPanel = document.querySelector("#parameterPanel");
      const motionHint = document.querySelector("#motionHint");
      const revealGroup = document.querySelector("#revealGroup");
      const replayReveal = document.querySelector("#replayReveal");
      const revealOptionsToggle = document.querySelector("#revealOptionsToggle");
      const revealOptionsPanel = document.querySelector("#revealOptionsPanel");
      const revealOptionsTitle = document.querySelector("#revealOptionsTitle");
      const revealOptionElements = [...document.querySelectorAll("[data-reveal-for]")];
      const revealOptionIds = [
        "spawnMode", "spawnAngle", "spawnSwirl", "revealGlow", "revealDuration",
        "revealMaxActiveTraces", "traceDuration", "revealLaunchRate", "maxActiveTraces",
        "scrollSpeedResponse", "unlockLead", "continuousGeneration", "generationAheadScreens",
      ];
      const revealControls = Object.fromEntries(revealOptionIds.map((id) => [id, document.querySelector("#" + id)]));
      const download = document.querySelector("#download");

      const geometryParameterIds = ["fill", "routeLength", "horizontalFlow", "flowAngle", "diagonalFlow", "longFlow", "swirl", "swirlScale", "jogLength", "channelAttraction", "featureScale"];
      const animationParameterIds = ["liveliness"];
      const parameterIds = [...geometryParameterIds, ...animationParameterIds];
      const parameters = Object.fromEntries(parameterIds.map((id) => [id, document.querySelector(`#${id}`)]));
      const presets = {
        original: { fill: 0.744, routeLength: 1.14, horizontalFlow: 0.9, flowAngle: 153, diagonalFlow: 1, longFlow: 0.31, swirl: 0.82, swirlScale: 0.72, jogLength: 0.42, channelAttraction: 1.5, featureScale: 1.37 },
        dense: { fill: 0.76, routeLength: 1.29, horizontalFlow: 0.57, flowAngle: 138, diagonalFlow: 0.26, longFlow: 0.3, swirl: 0.43, swirlScale: 0.52, jogLength: 0.85, channelAttraction: 0.69, featureScale: 0.65 },
        diagonal: { fill: 0.591, routeLength: 1.51, horizontalFlow: 0.98, flowAngle: 45, diagonalFlow: 1, longFlow: 0, swirl: 0, swirlScale: 0.75, jogLength: 0.65, channelAttraction: 0.86, featureScale: 1.28 },
        swirl: { fill: 0.58, routeLength: 1.1, horizontalFlow: 0.82, flowAngle: 15, diagonalFlow: 0.72, longFlow: 0.2, swirl: 0.9, swirlScale: 0.9, jogLength: 0.75, channelAttraction: 0.8, featureScale: 1 },
        sparse: { fill: 0.35, routeLength: 1.9, horizontalFlow: 0.45, flowAngle: 0, diagonalFlow: 0.3, longFlow: 0.32, swirl: 0.08, swirlScale: 0.93, jogLength: 0.57, channelAttraction: 0.6, featureScale: 0.88 },
      };
      const revealHints = {
        instant: "All traces arrive fully routed",
        flow: "A curved front grows every route from via to via",
        scroll: "Scroll unlocks routes; each one grows on its own timeline",
      };
      const animationHints = {
        none: "no ambient movement",
        conductor: "move to shape the current · click to activate the network",
        adom: "move to steer the routed field · click to launch a local bloom",
        handshake: "move to bias the next handshake · click to request a local exchange",
        reflection: "move to catch the light · click to send a quiet reflection",
      };
      const formats = {
        fill: (value) => `${Number((value * 100).toFixed(1))}%`,
        routeLength: (value) => `${value.toFixed(2)}×`,
        horizontalFlow: (value) => `${Math.round(value * 100)}%`,
        flowAngle: (value) => `${Math.round(value)}°`,
        diagonalFlow: (value) => `${Math.round(value * 100)}%`,
        longFlow: (value) => `${Math.round(value * 100)}%`,
        swirl: (value) => `${Math.round(value * 100)}%`,
        swirlScale: (value) => `${value.toFixed(2)}×`,
        jogLength: (value) => `${value.toFixed(2)}×`,
        channelAttraction: (value) => `${Math.round(value * 100)}%`,
        featureScale: (value) => `${value.toFixed(2)}×`,
        liveliness: (value) => `${Math.round(value * 100)}%`,
      };
      const revealFormats = {
        spawnAngle: (value) => Math.round(value) + "°",
        spawnSwirl: (value) => Number((value * 100).toFixed(1)) + "%",
        revealGlow: (value) => Math.round(value * 100) + "%",
        revealDuration: (value) => (value / 1000).toFixed(1) + " s",
        revealMaxActiveTraces: (value) => String(Math.round(value)),
        traceDuration: (value) => (value / 1000).toFixed(2) + " s",
        revealLaunchRate: (value) => Math.round(value) + "/s",
        maxActiveTraces: (value) => String(Math.round(value)),
        scrollSpeedResponse: (value) => Math.round(value * 100) + "%",
        unlockLead: (value) => Number((value * 100).toFixed(1)) + "%",
        generationAheadScreens: (value) => Number(value.toFixed(2)) + (value === 1 ? " screen" : " screens"),
      };

      function updateRevealOptionOutput(id) {
        if (!revealFormats[id]) return;
        const output = document.querySelector("#" + id + "Value");
        if (output) output.value = revealFormats[id](Number(revealControls[id].value));
      }

      function closeRevealOptions() {
        revealOptionsToggle.setAttribute("aria-expanded", "false");
        revealOptionsPanel.hidden = true;
      }

      function syncRevealOptionAvailability(name) {
        const state = revealOptionState[name];
        if (!state) return;
        const directional = state.spawnMode === "flow";
        revealControls.spawnAngle.disabled = !directional;
        revealControls.spawnSwirl.disabled = !directional;
        revealControls.generationAheadScreens.disabled = name === "scroll"
          && !state.continuousGeneration;
      }

      function syncRevealOptionControls(name) {
        if (name !== "flow" && name !== "scroll") return;
        const state = revealOptionState[name];
        for (const element of revealOptionElements) {
          element.hidden = !element.dataset.revealFor.split(" ").includes(name);
        }
        for (const id of revealOptionIds) {
          if (!(id in state)) continue;
          const control = revealControls[id];
          control.value = id === "continuousGeneration"
            ? String(Boolean(state[id]))
            : String(state[id]);
          if (id === "continuousGeneration") state[id] = control.value === "true";
          else if (id === "spawnMode") state[id] = control.value;
          else state[id] = Number(control.value);
          updateRevealOptionOutput(id);
        }
        revealOptionsTitle.textContent = name === "flow" ? "Flow sweep options" : "Scroll weave options";
        syncRevealOptionAvailability(name);
      }


      const query = new URLSearchParams(location.search);
      const requestedAnimationPreset = query.get("animationPreset");
      const requestedRevealPreset = query.get("revealPreset");
      const legacyGrowthLink = requestedAnimationPreset === "growth";
      const initialAnimationPreset = !legacyGrowthLink && ANIMATION_PRESETS[requestedAnimationPreset]
        ? requestedAnimationPreset
        : "none";
      const initialRevealPreset = legacyGrowthLink
        ? "flow"
        : REVEAL_PRESETS[requestedRevealPreset]
          ? requestedRevealPreset
          : "instant";
      let animationOptions = { ...ANIMATION_PRESETS[initialAnimationPreset] };
      const revealOptionState = {
        flow: {
          ...REVEAL_PRESETS.flow,
          spawnMode: REVEAL_PRESETS.flow.spawnMode || "flow",
          spawnAngle: REVEAL_PRESETS.flow.spawnAngle ?? 90,
          spawnSwirl: REVEAL_PRESETS.flow.spawnSwirl ?? 0.075,
          revealGlow: REVEAL_PRESETS.flow.revealGlow ?? 0.88,
          revealDuration: REVEAL_PRESETS.flow.revealDuration ?? 7600,
          revealMaxActiveTraces: REVEAL_PRESETS.flow.revealMaxActiveTraces ?? 48,
        },
        scroll: {
          ...REVEAL_PRESETS.scroll,
          spawnMode: REVEAL_PRESETS.scroll.spawnMode || "flow",
          spawnAngle: REVEAL_PRESETS.scroll.spawnAngle ?? 90,
          spawnSwirl: REVEAL_PRESETS.scroll.spawnSwirl ?? 0.075,
          revealGlow: REVEAL_PRESETS.scroll.revealGlow ?? 0.82,
          traceDuration: REVEAL_PRESETS.scroll.traceDuration ?? 950,
          revealLaunchRate: REVEAL_PRESETS.scroll.revealLaunchRate ?? 24,
          maxActiveTraces: REVEAL_PRESETS.scroll.maxActiveTraces ?? 72,
          scrollSpeedResponse: REVEAL_PRESETS.scroll.scrollSpeedResponse ?? 0.6,
          unlockLead: REVEAL_PRESETS.scroll.unlockLead ?? 0.025,
          continuousGeneration: REVEAL_PRESETS.scroll.continuousGeneration ?? true,
          generationAheadScreens: REVEAL_PRESETS.scroll.generationAheadScreens ?? 2,
        },
      };
      let activeRevealPreset = initialRevealPreset;
      const validSpawnModes = new Set(["flow", "radial", "edges", "scatter"]);
      if (activeRevealPreset === "flow" || activeRevealPreset === "scroll") {
        for (const id of revealOptionIds) {
          if (!query.has(id) || !(id in revealOptionState[activeRevealPreset])) continue;
          if (id === "spawnMode") {
            const value = query.get(id);
            if (validSpawnModes.has(value)) revealOptionState[activeRevealPreset][id] = value;
          } else if (id === "continuousGeneration") {
            revealOptionState[activeRevealPreset][id] = !["0", "false", "off"].includes(query.get(id).toLowerCase());
          } else {
            const value = Number(query.get(id));
            if (Number.isFinite(value)) revealOptionState[activeRevealPreset][id] = value;
          }
        }
      }
      if (activeRevealPreset !== "instant" && query.has("revealMotion")) {
        revealOptionState[activeRevealPreset].revealMotion = !["0", "false", "off"].includes(
          query.get("revealMotion").toLowerCase(),
        );
      }
      let revealOptions = activeRevealPreset === "instant"
        ? { ...REVEAL_PRESETS.instant }
        : { ...revealOptionState[activeRevealPreset] };
      const revealQueryPresent = revealOptionIds.some((id) => query.has(id));
      if (activeRevealPreset !== "instant") syncRevealOptionControls(activeRevealPreset);
      if (activeRevealPreset !== "instant" && revealQueryPresent) {
        revealOptionsToggle.setAttribute("aria-expanded", "true");
        revealOptionsPanel.hidden = false;
      }
      if (query.has("seed")) seed.value = query.get("seed").slice(0, 80);
      for (const id of parameterIds) {
        if (!query.has(id)) continue;
        const value = Number(query.get(id));
        if (Number.isFinite(value)) parameters[id].value = String(value);
      }
      // A deep link that tunes parameters should show them, not hide the reason the render differs.
      if (geometryParameterIds.some((id) => query.has(id))) {
        parameterToggle.setAttribute("aria-expanded", "true");
        parameterPanel.hidden = false;
      }
      if (!query.has("liveliness")) parameters.liveliness.value = String(animationOptions.liveliness);
      if (query.has("motion")) {
        animationOptions.motion = !["0", "false", "off"].includes(query.get("motion").toLowerCase());
      }

      function setActiveGenerationPreset(name) {
        for (const button of generationPresetButtons) {
          button.setAttribute("aria-pressed", String(button.dataset.preset === name));
        }
      }

      function setActiveRevealPreset(name) {
        for (const button of revealPresetButtons) {
          button.setAttribute("aria-pressed", String(button.dataset.revealPreset === name));
        }
      }

      function setActiveAnimationPreset(name) {
        for (const button of animationPresetButtons) {
          button.setAttribute("aria-pressed", String(button.dataset.animationPreset === name));
        }
      }

      function updatePresentation() {
        const routed = animationOptions.animationSystem === "adom";
        const revealSystem = routed ? "instant" : revealOptions.revealSystem;
        hero.dataset.revealSystem = revealSystem;
        revealGroup.dataset.disabled = String(routed);
        revealGroup.setAttribute("aria-disabled", String(routed));
        setActiveRevealPreset(routed ? "instant" : activeRevealPreset);
        for (const button of revealPresetButtons) button.disabled = routed;
        replayReveal.disabled = routed || !(
          revealSystem === "flow"
          || (revealSystem === "scroll" && revealOptions.continuousGeneration)
        );
        revealOptionsToggle.disabled = routed || revealSystem === "instant";
        if (revealOptionsToggle.disabled) closeRevealOptions();
        const revealHint = revealSystem === "scroll" && revealOptions.continuousGeneration
          ? "Scroll queues trace growth and generates new field sections ahead"
          : revealHints[revealSystem] || revealHints.instant;
        motionHint.textContent = routed
          ? "Routed field owns its trace lifecycle · move to steer it and click for a local bloom"
          : [
            revealHint,
            animationHints[animationOptions.animationSystem] || animationHints.none,
          ].join(" · ");
      }

      function applyAtmosphere(options) {
        const amount = Math.max(0, Math.min(1.25, options.atmosphereStrength));
        hero.dataset.animationSystem = options.animationSystem;
        hero.dataset.motion = options.motion ? "on" : "off";
        glow.style.setProperty("--atmosphere-strength", String(amount));
        glow.style.setProperty("--atmosphere-low", String(Math.min(1, amount * 0.66)));
        glow.style.setProperty("--atmosphere-high", String(Math.min(1, amount)));
        updatePresentation();
      }

      function applyReveal() {
        updatePresentation();
      }

      if (geometryParameterIds.some((id) => query.has(id))) setActiveGenerationPreset(null);
      const animationIsCustom = animationParameterIds.some((id) => query.has(id)) || query.has("motion");
      setActiveRevealPreset(initialRevealPreset);
      setActiveAnimationPreset(animationIsCustom ? null : initialAnimationPreset);
      applyReveal();
      applyAtmosphere(animationOptions);

      function optionsFromControls() {
        const options = {
          ...revealOptions,
          ...animationOptions,
          seed: seed.value.trim() || "nitrogen",
          traceColor: "#1d2938",
        };
        for (const id of parameterIds) options[id] = Number(parameters[id].value);
        return options;
      }

      function updateOutput(id) {
        const value = Number(parameters[id].value);
        document.querySelector(`#${id}Value`).value = formats[id](value);
      }
      parameterIds.forEach(updateOutput);

      const circuit = createCircuitBackground(mount, optionsFromControls());
      let regenerationTimer;
      let animationTimer;
      let revealUpdateTimer;

      function commitRevealOptions() {
        window.clearTimeout(revealUpdateTimer);
        if (typeof circuit.setReveal === "function") {
          circuit.setReveal(revealOptions);
        } else {
          circuit.regenerate(optionsFromControls());
        }
        queueTraceCount();
      }

      function scheduleRevealUpdate() {
        window.clearTimeout(revealUpdateTimer);
        revealUpdateTimer = window.setTimeout(commitRevealOptions, 120);
      }

      let lastTraceCountText = "";
      function updateTraceCount(stats) {
        const total = circuit.field.traces.length;
        const text = stats?.system === "scroll-trace-reveal"
          ? Math.min(total, stats.completedTraces) + " / " + total + " routed"
          : total + " traces";
        if (text === lastTraceCountText) return;
        lastTraceCountText = text;
        traceCount.value = text;
      }
      let traceCountFrame = 0;
      function tickTraceCount() {
        traceCountFrame = 0;
        const stats = circuit.revealStats;
        updateTraceCount(stats);
        if (
          stats?.continuous
          || (
            stats?.system === "scroll-trace-reveal"
            && (stats.queuedTraces > 0 || stats.activeTraces > 0)
          )
        ) {
          traceCountFrame = window.setTimeout(tickTraceCount, 200);
        }
      }
      function queueTraceCount() {
        if (traceCountFrame) return;
        traceCountFrame = window.requestAnimationFrame(tickTraceCount);
      }
      window.addEventListener("scroll", queueTraceCount, { passive: true });
      window.addEventListener("resize", queueTraceCount, { passive: true });
      queueTraceCount();
      const requestedScrollProgress = Number(query.get("scrollProgress"));
      const requestedScrollScreens = Number(query.get("scrollScreens"));
      if (
        initialRevealPreset === "scroll"
        && revealOptions.continuousGeneration
        && Number.isFinite(requestedScrollScreens)
        && requestedScrollScreens > 0
      ) {
        window.requestAnimationFrame(() => window.requestAnimationFrame(() => {
          const target = requestedScrollScreens * window.innerHeight;
          const startedAt = performance.now();
          const advance = () => {
            const remaining = target - window.scrollY;
            if (remaining <= 2 || performance.now() - startedAt > 15000) return;
            window.scrollBy(0, Math.min(window.innerHeight * 0.42, remaining));
            window.setTimeout(advance, 180);
          };
          advance();
        }));
      } else if (initialRevealPreset === "scroll" && Number.isFinite(requestedScrollProgress)) {
        window.requestAnimationFrame(() => window.requestAnimationFrame(() => {
          const travel = Math.max(0, hero.scrollHeight - window.innerHeight);
          window.scrollTo(0, travel * Math.max(0, Math.min(1, requestedScrollProgress)));
        }));
      }


      function regenerate() {
        window.clearTimeout(regenerationTimer);
        circuit.regenerate(optionsFromControls());
        queueTraceCount();
      }

      for (const id of parameterIds) {
        parameters[id].addEventListener("input", () => {
          updateOutput(id);
          if (!geometryParameterIds.includes(id)) {
            setActiveAnimationPreset(null);
            animationOptions = { ...animationOptions, [id]: Number(parameters[id].value) };
            applyAtmosphere(animationOptions);
            window.clearTimeout(animationTimer);
            if (animationOptions.animationSystem === "adom") {
              animationTimer = window.setTimeout(() => circuit.setAnimation(animationOptions), 140);
            } else {
              circuit.setAnimation(animationOptions);
            }
            return;
          }
          setActiveGenerationPreset(null);
          window.clearTimeout(regenerationTimer);
          regenerationTimer = window.setTimeout(regenerate, 140);
        });
      }
      for (const button of generationPresetButtons) {
        button.addEventListener("click", () => {
          const name = button.dataset.preset;
          const values = presets[name];
          for (const [id, value] of Object.entries(values)) {
            parameters[id].value = String(value);
            updateOutput(id);
          }
          setActiveGenerationPreset(name);
          regenerate();
        });
      }
      parameterToggle.addEventListener("click", () => {
        const expanded = parameterToggle.getAttribute("aria-expanded") === "true";
        parameterToggle.setAttribute("aria-expanded", String(!expanded));
        parameterPanel.hidden = expanded;
      });
      revealOptionsToggle.addEventListener("click", () => {
        if (revealOptionsToggle.disabled) return;
        const expanded = revealOptionsToggle.getAttribute("aria-expanded") === "true";
        if (expanded) {
          closeRevealOptions();
          return;
        }
        syncRevealOptionControls(activeRevealPreset);
        revealOptionsToggle.setAttribute("aria-expanded", "true");
        revealOptionsPanel.hidden = false;
      });
      for (const id of revealOptionIds) {
        revealControls[id].addEventListener("input", () => {
          if (activeRevealPreset !== "flow" && activeRevealPreset !== "scroll") return;
          let value;
          if (id === "spawnMode") value = revealControls[id].value;
          else if (id === "continuousGeneration") value = revealControls[id].value === "true";
          else value = Number(revealControls[id].value);
          revealOptionState[activeRevealPreset][id] = value;
          revealOptions = { ...revealOptionState[activeRevealPreset] };
          updateRevealOptionOutput(id);
          syncRevealOptionAvailability(activeRevealPreset);
          applyReveal();
          scheduleRevealUpdate();
        });
      }
      for (const button of revealPresetButtons) {
        button.addEventListener("click", () => {
          const name = button.dataset.revealPreset;
          activeRevealPreset = name;
          revealOptions = name === "instant"
            ? { ...REVEAL_PRESETS.instant }
            : { ...revealOptionState[name] };
          if (name !== "instant") syncRevealOptionControls(name);
          setActiveRevealPreset(name);
          applyReveal();
          commitRevealOptions();
        });
      }
      replayReveal.addEventListener("click", () => {
        circuit.triggerReveal();
      });
      for (const button of animationPresetButtons) {
        button.addEventListener("click", () => {
          const name = button.dataset.animationPreset;
          animationOptions = { ...ANIMATION_PRESETS[name] };
          parameters.liveliness.value = String(animationOptions.liveliness);
          updateOutput("liveliness");
          applyAtmosphere(animationOptions);
          setActiveAnimationPreset(name);
          window.clearTimeout(animationTimer);
          circuit.setAnimation(animationOptions);
          updateTraceCount();
        });
      }
      seed.addEventListener("change", regenerate);

      controls.addEventListener("submit", (event) => {
        event.preventDefault();
        regenerate();
      });

      function saveBlob(text, name) {
        const blob = new Blob([text], { type: "image/svg+xml" });
        const url = URL.createObjectURL(blob);
        const link = document.createElement("a");
        link.href = url;
        link.download = name;
        link.click();
        URL.revokeObjectURL(url);
      }

      const slug = () => (seed.value || "seed").replace(/[^a-z0-9_-]+/gi, "-");

      download.addEventListener("click", () => {
        saveBlob(circuit.exportSvg(), `circuit-${slug()}.svg`);
      });

    </script>
  </body>
</html>