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2681 lines (2207 loc) · 83.7 KB
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<!DOCTYPE html>
<html lang="en" data-theme="light">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>LDraw Step Viewer</title>
<script>
// Apply the saved theme before CSS paints to avoid a dark-theme flash.
// Light is the default for first-time visitors and when storage is unavailable.
(() => {
try {
const savedTheme = localStorage.getItem('draw-viewer-theme');
if (savedTheme === 'light' || savedTheme === 'dark') {
document.documentElement.dataset.theme = savedTheme;
}
} catch (error) {
// localStorage may be unavailable in restrictive/private contexts.
// Keep the HTML default: light.
}
})();
</script>
<style>
@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;600;700&family=Outfit:wght@300;400;500;600;700&display=swap');
:root {
--bg-primary: #0a0a0f;
--bg-secondary: #12121a;
--bg-tertiary: #1a1a26;
--bg-hover: #22223a;
--accent: #f7c948;
--accent-dim: rgba(247, 201, 72, 0.15);
--accent-glow: rgba(247, 201, 72, 0.3);
--text-primary: #e8e6e3;
--text-secondary: #8a8a9a;
--text-muted: #55556a;
--border: #2a2a3a;
--danger: #f87171;
--scene-bg: #0a0a0f;
--grid-a: #2a2a3a;
--grid-b: #1a1a26;
--bom-bg: rgba(18,18,26,0.92);
--bom-border: rgba(42,42,58,0.8);
--instr-bg: #f3f0e9;
--instr-card: #ffffff;
--instr-text: #1a1a2e;
--instr-muted: #6a6a88;
--instr-border: #b0b8c8;
}
:root[data-theme="light"] {
--bg-primary: #eaeaf0;
--bg-secondary: #ffffff;
--bg-tertiary: #e0e0ea;
--bg-hover: #d2d2de;
--accent: #c88500;
--accent-dim: rgba(200, 133, 0, 0.1);
--accent-glow: rgba(200, 133, 0, 0.25);
--text-primary: #1a1a2e;
--text-secondary: #5a5a72;
--text-muted: #8888a0;
--border: #c8c8d6;
--danger: #dc2626;
--scene-bg: #dde0e8;
--grid-a: #c0c0d0;
--grid-b: #d0d0dc;
--bom-bg: rgba(255,255,255,0.94);
--bom-border: rgba(200,200,214,0.8);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
font-family: 'Outfit', sans-serif;
background: var(--bg-primary);
color: var(--text-primary);
height: 100vh;
overflow: hidden;
}
.app { display: grid; grid-template-rows: 52px 1fr 58px; height: 100vh; }
/* ─── Header ─── */
header {
display: flex; align-items: center; justify-content: space-between;
padding: 0 16px;
border-bottom: 1px solid var(--border);
background: var(--bg-secondary);
z-index: 30;
}
.logo { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 15px; }
.logo-icon {
width: 26px; height: 26px; background: var(--accent);
border-radius: 5px; display: grid; place-items: center;
font-size: 13px; color: #000; font-weight: 700;
}
.file-info {
font-family: 'JetBrains Mono', monospace; font-size: 11px;
color: var(--text-secondary); background: var(--bg-tertiary);
padding: 3px 8px; border-radius: 4px; border: 1px solid var(--border);
}
.hdr-actions { display: flex; gap: 6px; align-items: center; }
.btn {
display: flex; align-items: center; gap: 5px;
padding: 6px 12px; border-radius: 6px;
border: 1px solid var(--border); background: var(--bg-tertiary);
color: var(--text-primary); font-family: 'Outfit', sans-serif;
font-size: 12px; font-weight: 500; cursor: pointer;
transition: all 0.15s; white-space: nowrap;
}
.btn:hover:not(:disabled) { background: var(--bg-hover); border-color: var(--accent); }
.btn:disabled { opacity: 0.3; cursor: not-allowed; }
.btn.primary {
background: var(--accent); color: #000;
border-color: var(--accent); font-weight: 600;
}
.btn.primary:hover:not(:disabled) {
filter: brightness(1.1); box-shadow: 0 0 12px var(--accent-glow);
}
.btn.active {
background: var(--accent); color: #000;
border-color: var(--accent);
}
.btn-icon {
width: 32px; height: 32px; padding: 0;
display: grid; place-items: center; font-size: 15px; border-radius: 6px;
}
/* ─── Main ─── */
.main-area { position: relative; overflow: hidden; }
.main-area.dragover::after {
content: 'Drop LDraw file';
position: absolute;
inset: 10px;
z-index: 25;
display: grid;
place-items: center;
border: 2px dashed var(--accent);
border-radius: 12px;
background: color-mix(in srgb, var(--bg-primary) 82%, transparent);
color: var(--text-primary);
font-size: 14px;
font-weight: 600;
pointer-events: none;
}
#canvas-container { width: 100%; height: 100%; background: var(--bg-primary); }
#canvas-container canvas { width: 100% !important; height: 100% !important; display: block; }
/* ─── Drop Zone ─── */
.drop-zone {
position: absolute; inset: 0;
display: flex; align-items: center; justify-content: center;
z-index: 10; background: var(--bg-primary); transition: opacity 0.3s;
}
.drop-zone.hidden { opacity: 0; pointer-events: none; }
.drop-zone-inner {
border: 2px dashed var(--border); border-radius: 14px;
padding: 50px 70px; display: flex; flex-direction: column;
align-items: center; gap: 12px; cursor: pointer; transition: all 0.3s;
}
.drop-zone-inner:hover, .drop-zone.dragover .drop-zone-inner {
border-color: var(--accent); background: var(--accent-dim);
box-shadow: 0 0 30px var(--accent-glow);
}
.drop-icon {
width: 56px; height: 56px; border-radius: 14px;
background: var(--bg-tertiary); border: 1px solid var(--border);
display: grid; place-items: center; font-size: 24px; transition: all 0.3s;
}
.drop-zone-inner:hover .drop-icon { background: var(--accent-dim); border-color: var(--accent); }
.drop-title { font-size: 16px; font-weight: 600; }
.drop-sub { font-size: 12px; color: var(--text-secondary); }
.drop-formats { display: flex; gap: 5px; }
.fmt {
font-family: 'JetBrains Mono', monospace; font-size: 10px;
padding: 2px 6px; border-radius: 3px;
background: var(--bg-tertiary); border: 1px solid var(--border);
color: var(--text-secondary);
}
/* ─── Loading ─── */
.loading {
position: absolute; inset: 0; background: rgba(10,10,15,0.9);
display: none; flex-direction: column; align-items: center;
justify-content: center; gap: 12px; z-index: 20;
}
.loading.visible { display: flex; }
.spinner {
width: 36px; height: 36px;
border: 3px solid var(--border); border-top-color: var(--accent);
border-radius: 50%; animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.load-text { font-size: 13px; color: var(--text-secondary); }
.load-sub { font-size: 11px; color: var(--text-muted); font-family: 'JetBrains Mono', monospace; }
/* ─── Step overlay ─── */
.step-overlay {
position: absolute; top: 12px; left: 12px; z-index: 5; display: none;
}
.step-overlay.visible { display: flex; flex-direction: column; gap: 6px; }
.step-badge {
background: var(--bom-bg); border: 1px solid var(--bom-border);
border-radius: 10px; padding: 10px 14px; backdrop-filter: blur(10px);
}
.step-label {
font-size: 10px; color: var(--text-muted);
text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 2px;
}
.step-num {
font-family: 'JetBrains Mono', monospace;
font-size: 26px; font-weight: 700; color: var(--accent); line-height: 1;
}
.step-tot {
font-family: 'JetBrains Mono', monospace;
font-size: 13px; color: var(--text-muted);
}
/* ─── BOM Panel ─── */
.bom-panel {
position: absolute; top: 12px; right: 12px; z-index: 5;
display: none; background: var(--bom-bg);
border: 1px solid var(--bom-border); border-radius: 10px;
padding: 10px 14px; backdrop-filter: blur(10px);
width: min(286px, calc(100vw - 24px));
max-width: 286px;
}
.bom-panel.visible { display: block; }
.bom-title {
font-size: 10px; color: var(--text-muted);
text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 8px;
}
.bom-list { display: flex; flex-wrap: wrap; gap: 6px; }
.bom-item {
display: flex; align-items: center; gap: 5px;
background: var(--bg-tertiary); border: 1px solid var(--border);
border-radius: 6px; padding: 4px 8px;
}
.bom-color {
width: 12px; height: 12px; border-radius: 3px;
border: 1px solid rgba(255,255,255,0.15); flex-shrink: 0;
}
.bom-name { font-family: 'JetBrains Mono', monospace; font-size: 10px; color: var(--text-secondary); }
.bom-qty { font-family: 'JetBrains Mono', monospace; font-size: 10px; font-weight: 700; color: var(--accent); margin-left: 2px; }
.bom-placement {
margin-top: 9px;
padding-top: 8px;
border-top: 1px solid var(--bom-border);
}
.bom-placement-head {
display: flex; align-items: center; justify-content: space-between;
gap: 8px; margin-bottom: 6px;
}
.bom-placement-title {
font-size: 9px; color: var(--text-muted);
text-transform: uppercase; letter-spacing: 0.08em;
}
.bom-placement-hint {
font-family: 'JetBrains Mono', monospace;
font-size: 8px; color: var(--text-muted);
}
.bom-preview {
position: relative;
width: 100%;
aspect-ratio: 16 / 10;
overflow: hidden;
border: 1px solid var(--border);
border-radius: 7px;
background: #f3f0e9;
}
.bom-preview img {
width: 100%; height: 100%;
display: block; object-fit: cover;
}
.bom-preview-status {
position: absolute; inset: 0;
display: grid; place-items: center;
padding: 10px; text-align: center;
font-family: 'JetBrains Mono', monospace;
font-size: 9px; color: #74706a;
background: #f3f0e9;
}
/* ─── Hints ─── */
.hints {
position: absolute; bottom: 12px; right: 12px;
z-index: 5; display: none; gap: 6px;
}
.hints.visible { display: flex; }
.hint {
font-size: 10px; color: var(--text-muted);
background: var(--bom-bg); border: 1px solid var(--bom-border);
border-radius: 5px; padding: 3px 6px; backdrop-filter: blur(10px);
}
.hint kbd {
font-family: 'JetBrains Mono', monospace;
background: var(--bg-tertiary); padding: 0 3px; border-radius: 2px; margin-right: 3px;
}
/* ─── Footer ─── */
footer {
display: flex; align-items: center; justify-content: center;
gap: 10px; padding: 0 16px;
border-top: 1px solid var(--border); background: var(--bg-secondary);
}
footer.disabled { opacity: 0.3; pointer-events: none; }
.progress { flex: 1; max-width: 360px; height: 3px; background: var(--bg-tertiary); border-radius: 2px; overflow: hidden; }
.progress-bar { height: 100%; background: var(--accent); border-radius: 2px; transition: width 0.3s; }
.step-txt {
font-family: 'JetBrains Mono', monospace;
font-size: 11px; color: var(--text-secondary); min-width: 60px; text-align: center;
}
#file-input { display: none; }
/* ═══════════════════════════════════════════════════
INSTRUCTION MODE — Scrollable booklet overlay
═══════════════════════════════════════════════════ */
.instr-overlay {
position: fixed; inset: 0; z-index: 50;
display: none;
background: var(--instr-bg);
overflow-y: auto;
overflow-x: hidden;
}
.instr-overlay.visible { display: block; }
.instr-header {
position: sticky; top: 0; z-index: 51;
display: flex; align-items: center; justify-content: space-between;
gap: 12px;
padding: 10px 16px;
background: #fff;
border-bottom: 2px solid var(--instr-border);
box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}
.instr-header-title {
min-width: 0;
font-size: 16px; font-weight: 700; color: var(--instr-text);
overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.instr-header-actions {
display: flex; align-items: center; gap: 8px; flex-shrink: 0;
}
.instr-zoom {
display: flex; align-items: center; gap: 4px;
padding: 3px;
border: 1px solid var(--instr-border);
border-radius: 7px;
background: #f5f5f8;
}
.instr-zoom-btn {
min-width: 30px; height: 30px;
display: inline-grid; place-items: center;
border: 0; border-radius: 5px;
background: transparent;
color: var(--instr-text);
font-family: 'JetBrains Mono', monospace;
font-size: 16px; font-weight: 700;
cursor: pointer;
}
.instr-zoom-btn:hover:not(:disabled) { background: #e8e8ef; }
.instr-zoom-btn:disabled { opacity: 0.35; cursor: default; }
.instr-zoom-value {
min-width: 46px;
text-align: center;
font-family: 'JetBrains Mono', monospace;
font-size: 10px; font-weight: 700;
color: var(--instr-muted);
}
.instr-overview-btn {
height: 30px;
padding: 0 9px;
border: 0; border-radius: 5px;
background: transparent;
color: var(--instr-text);
font-family: 'Outfit', sans-serif;
font-size: 11px; font-weight: 650;
cursor: pointer;
}
.instr-overview-btn:hover { background: #e8e8ef; }
.instr-close-btn {
padding: 6px 14px; border-radius: 6px;
border: 1px solid var(--instr-border); background: #f0f0f4;
color: var(--instr-text); font-family: 'Outfit', sans-serif;
font-size: 12px; font-weight: 600; cursor: pointer;
}
.instr-close-btn:hover { background: #e0e0e8; }
.instr-grid {
--instr-card-width: 460px;
display: grid;
grid-template-columns: repeat(
auto-fit,
minmax(min(100%, var(--instr-card-width)), 1fr)
);
align-items: start;
gap: 18px;
padding: 18px 18px 36px;
max-width: 1820px;
margin: 0 auto;
}
.instr-grid.instr-compact .instr-card-header {
gap: 8px;
padding: 9px 10px 7px;
}
.instr-grid.instr-compact .instr-step-num {
font-size: 25px;
min-width: 28px;
}
.instr-grid.instr-compact .instr-bom-box {
gap: 4px;
padding: 5px 6px;
}
.instr-grid.instr-compact .instr-bom-entry {
gap: 4px;
padding: 4px 6px;
}
.instr-grid.instr-compact .instr-bom-swatch {
width: 16px; height: 16px;
}
.instr-grid.instr-compact .instr-bom-qty {
font-size: 10px;
}
.instr-grid.instr-compact .instr-bom-label {
font-size: 8px;
}
.instr-grid.instr-compact .instr-action-label {
left: 7px; bottom: 7px;
padding: 4px 6px;
font-size: 8px;
}
/* Each step card */
.instr-card {
background: var(--instr-card);
border-radius: 12px;
border: 1px solid var(--instr-border);
overflow: hidden;
box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}
.instr-card-header {
display: flex; align-items: flex-start; gap: 12px;
padding: 14px 16px 10px;
border-bottom: 1px solid #e8e8f0;
}
.instr-step-num {
font-family: 'Outfit', sans-serif;
font-size: 32px; font-weight: 800;
color: var(--instr-text);
line-height: 1;
min-width: 36px;
}
.instr-bom-box {
flex: 1;
display: flex;
flex-wrap: wrap;
gap: 6px;
border: 1.5px solid #d0d4e0;
border-radius: 8px;
padding: 8px 10px;
background: #f8f8fc;
}
.instr-bom-entry {
display: flex; align-items: center; gap: 6px;
background: #eef0f6;
border: 1px solid #d8dce6;
border-radius: 6px;
padding: 6px 10px;
}
.instr-bom-swatch {
width: 22px; height: 22px; border-radius: 4px;
border: 1px solid rgba(0,0,0,0.12);
flex-shrink: 0;
}
.instr-bom-info {
display: flex;
align-items: baseline;
gap: 5px;
}
.instr-bom-qty {
font-family: 'JetBrains Mono', monospace;
font-size: 13px; font-weight: 800;
color: var(--instr-text);
flex-shrink: 0;
}
.instr-bom-label {
font-family: 'JetBrains Mono', monospace;
font-size: 10px; color: var(--instr-muted);
}
/* The 3D render area */
.instr-render {
position: relative;
width: 100%;
aspect-ratio: 4 / 3;
background: var(--instr-bg);
display: flex; align-items: center; justify-content: center;
overflow: hidden;
}
.instr-render canvas {
width: 100% !important;
height: 100% !important;
display: block;
}
.instr-action-label {
position: absolute;
left: 12px;
bottom: 12px;
z-index: 2;
padding: 6px 9px;
border-radius: 7px;
background: rgba(255,255,255,0.92);
border: 1px solid #c9d0dc;
color: #28313a;
font-family: 'JetBrains Mono', monospace;
font-size: 10px;
font-weight: 700;
letter-spacing: 0.02em;
box-shadow: 0 1px 4px rgba(0,0,0,0.08);
pointer-events: none;
}
.instr-action-label .current-key {
color: #16823c;
}
.instr-action-label .previous-key {
color: #77818d;
}
.instr-generating {
display: flex; flex-direction: column;
align-items: center; justify-content: center;
gap: 10px; padding: 40px; color: var(--instr-muted);
font-size: 13px;
}
.instr-generating .spinner {
border-color: var(--instr-border);
border-top-color: #6a6a88;
}
@media (max-width: 700px) {
.app { grid-template-rows: 48px 1fr 54px; }
header { padding: 0 8px; }
.logo span { display: none; }
.file-info { max-width: 34vw; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.btn { padding: 6px 8px; }
footer { gap: 5px; padding: 0 7px; }
footer .progress { max-width: none; }
#btn-first, #btn-last { display: none; }
.hints { display: none !important; }
.bom-panel {
width: min(205px, calc(100vw - 18px));
max-width: 205px;
padding: 8px 9px;
top: 9px; right: 9px;
}
.bom-preview { aspect-ratio: 4 / 3; }
.instr-header {
align-items: flex-start;
padding: 8px;
}
.instr-header-title { font-size: 13px; padding-top: 7px; }
.instr-header-actions { gap: 5px; }
.instr-overview-btn { display: none; }
.instr-zoom { gap: 1px; padding: 2px; }
.instr-zoom-btn { min-width: 28px; height: 28px; }
.instr-zoom-value { min-width: 38px; font-size: 9px; }
.instr-close-btn { padding: 6px 8px; }
.instr-grid {
--instr-card-width: 100% !important;
padding: 10px 7px 22px;
gap: 12px;
}
.instr-card-header { padding: 10px; gap: 8px; }
.instr-step-num { font-size: 26px; min-width: 30px; }
.instr-bom-entry { padding: 4px 7px; }
}
</style>
</head>
<body>
<div class="app">
<header>
<div class="logo">
<div class="logo-icon">▦</div>
<span>LDraw Viewer</span>
</div>
<div id="file-info" class="file-info" style="display:none"></div>
<div class="hdr-actions">
<button class="btn" id="btn-instr" onclick="openInstructions()" style="display:none">📖 Instructions</button>
<button class="btn btn-icon" id="theme-toggle" onclick="toggleTheme()" title="Toggle theme">🌙</button>
<button class="btn" onclick="document.getElementById('file-input').click()">📂 Open</button>
</div>
</header>
<div class="main-area">
<div id="canvas-container"></div>
<div class="drop-zone" id="drop-zone">
<div class="drop-zone-inner" onclick="document.getElementById('file-input').click()">
<div class="drop-icon">▦</div>
<div class="drop-title">Drop your LDraw file here</div>
<div class="drop-sub">or click to browse</div>
<div class="drop-formats">
<span class="fmt">.ldr</span>
<span class="fmt">.mpd</span>
<span class="fmt">.dat</span>
</div>
</div>
</div>
<div class="loading" id="loading">
<div class="spinner"></div>
<div class="load-text" id="load-text">Loading...</div>
<div class="load-sub" id="load-sub"></div>
</div>
<div class="step-overlay" id="step-overlay">
<div class="step-badge">
<div class="step-label">Build Step</div>
<span class="step-num" id="step-num">1</span>
<span class="step-tot" id="step-tot">/ 1</span>
</div>
</div>
<div class="bom-panel" id="bom-panel">
<div class="bom-title">Parts in this step</div>
<div class="bom-list" id="bom-list"></div>
<div class="bom-placement">
<div class="bom-placement-head">
<span class="bom-placement-title">Placement</span>
<span class="bom-placement-hint">green arrow → target</span>
</div>
<div class="bom-preview" id="bom-preview" aria-live="polite">
<div class="bom-preview-status">Placement preview</div>
</div>
</div>
</div>
<div class="hints" id="hints">
<div class="hint"><kbd>←→</kbd> Steps</div>
<div class="hint"><kbd>Drag</kbd> Rotate</div>
<div class="hint"><kbd>Scroll</kbd> Zoom</div>
</div>
<input type="file" id="file-input" accept=".ldr,.mpd,.dat" />
</div>
<footer class="disabled" id="footer">
<button class="btn" id="btn-first" onclick="goToStep(0)">⏮</button>
<button class="btn" id="btn-prev" onclick="prevStep()">← Prev</button>
<div class="progress"><div class="progress-bar" id="pbar"></div></div>
<span class="step-txt" id="ftxt">0 / 0</span>
<button class="btn primary" id="btn-next" onclick="nextStep()">Next →</button>
<button class="btn" id="btn-last" onclick="goToStep(window._totalSteps-1)">⏭</button>
</footer>
</div>
<!-- INSTRUCTION MODE OVERLAY -->
<div class="instr-overlay" id="instr-overlay">
<div class="instr-header">
<div class="instr-header-title" id="instr-title">Build Instructions</div>
<div class="instr-header-actions">
<div class="instr-zoom" aria-label="Instruction zoom">
<button class="instr-zoom-btn" id="instr-zoom-out" type="button" onclick="zoomInstructionsOut()" title="Show more steps">−</button>
<span class="instr-zoom-value" id="instr-zoom-value">70%</span>
<button class="instr-zoom-btn" id="instr-zoom-in" type="button" onclick="zoomInstructionsIn()" title="Show larger steps">+</button>
<button class="instr-overview-btn" type="button" onclick="setInstructionOverview()" title="Show as many steps as possible">▦ Overview</button>
</div>
<button class="instr-close-btn" onclick="closeInstructions()">✕ Close</button>
</div>
</div>
<div class="instr-grid" id="instr-grid"></div>
</div>
<script type="importmap">
{
"imports": {
"three": "https://cdn.jsdelivr.net/npm/three@0.180.0/build/three.module.js",
"three/addons/": "https://cdn.jsdelivr.net/npm/three@0.180.0/examples/jsm/"
}
}
</script>
<script type="module">
import * as THREE from 'three';
import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
import { LDrawLoader } from 'three/addons/loaders/LDrawLoader.js';
import { LDrawConditionalLineMaterial } from 'three/addons/materials/LDrawConditionalLineMaterial.js';
import { RoomEnvironment } from 'three/addons/environments/RoomEnvironment.js';
// ═══════════════════════════════════════
// CONFIG
// ═══════════════════════════════════════
const PARTS_URL = 'https://raw.githubusercontent.com/gkjohnson/ldraw-parts-library/master/complete/ldraw/';
const COLORS_URL = 'https://raw.githubusercontent.com/gkjohnson/ldraw-parts-library/master/colors/ldcfgalt.ldr';
const LDRAW_PATH_MANIFEST_URL = './ldraw-paths.txt';
const LDRAW_COLORS = {
0:'#1B2A34',1:'#1E5AA8',2:'#00852B',3:'#069D9F',4:'#B40000',5:'#D05098',
6:'#543324',7:'#8A928D',8:'#545955',9:'#C870A0',10:'#58AB41',11:'#00AAA4',
12:'#F06D61',13:'#F6A9BB',14:'#FAC80A',15:'#F4F4F4',16:'#FFFF00',17:'#A5CA18',
19:'#E4ADC8',20:'#D9E4A7',22:'#81007B',23:'#0057A6',25:'#F9A777',26:'#9C006B',
27:'#7C503A',28:'#548A3E',29:'#F5C189',33:'#0A1327',34:'#06592A',36:'#BF1C2E',
38:'#A83D15',46:'#F0DC7C',47:'#F8F8F8',68:'#F7AD63',69:'#BB805A',70:'#6C4A27',
71:'#C8C8C8',72:'#6E6E6E',73:'#4478A5',74:'#59B278',77:'#D47BA5',78:'#F0C8A0',
84:'#C9CAE2',85:'#5A3463',86:'#6E5951',100:'#EEB4A4',110:'#2F4F7F',
112:'#4570A5',115:'#A0BCAC',118:'#97D899',120:'#DEEA92',148:'#575857',
178:'#CC702A',183:'#F8F8F8',191:'#FCAC00',212:'#A3C5E8',216:'#990000',
226:'#F4F47C',232:'#69B9E3',272:'#0A3463',288:'#008F2D',295:'#FF94C2',
308:'#352100',320:'#680028',321:'#009742',322:'#5DADE2',323:'#AFDEE0',
326:'#D7F000',330:'#796E65',334:'#C67020',335:'#5F758C',351:'#FF8080',
353:'#FF6060',366:'#D05020',373:'#845E98',378:'#9CCBC3',379:'#0A5B7E',
450:'#B67B50',462:'#FFA500',484:'#8B0000',503:'#C8C8C8',
};
const OUTLINE_COLOR = 0x178a42;
const INSTR_ARROW_COLOR = 0x16a34a;
// ═══════════════════════════════════════
// STATE
// ═══════════════════════════════════════
let scene, camera, renderer, controls, gridHelper, viewerFloor, viewerFloorMaterial;
let model = null;
let loader = null;
let rawText = '';
let fileName = '';
const THEME_STORAGE_KEY = 'draw-viewer-theme';
let isDark = document.documentElement.dataset.theme === 'dark';
let stepData = [];
let currentStep = 0;
let loadRevision = 0;
const INSTRUCTION_ZOOM_STORAGE_KEY = 'draw-viewer-instruction-zoom';
const INSTRUCTION_ZOOM_LEVELS = [45, 55, 70, 85, 100, 120];
const INSTRUCTION_CARD_WIDTHS = {
45: 300,
55: 360,
70: 460,
85: 580,
100: 740,
120: 940,
};
let instructionZoom = 70;
try {
const savedInstructionZoom = Number(localStorage.getItem(INSTRUCTION_ZOOM_STORAGE_KEY));
if (INSTRUCTION_ZOOM_LEVELS.includes(savedInstructionZoom)) {
instructionZoom = savedInstructionZoom;
}
} catch (error) {
// Keep the default overview-friendly zoom when storage is unavailable.
}
let instructionRevision = 0;
let instructionReady = false;
let instructionGenerating = false;
let instructionObjectUrls = [];
let placementPreviewRevision = 0;
let placementPreviewContext = null;
let ldrawPathLookupPromise = null;
// ═══════════════════════════════════════
// LDRAW LIBRARY PATH RESOLUTION
// ═══════════════════════════════════════
function embeddedFileNames(text) {
const names = new Set();
for (const line of String(text || '').replace(/\r\n/g, '\n').split('\n')) {
const match = line.match(/^\s*0\s+FILE\s+(.+?)\s*$/i);
if (match) names.add(match[1].trim().replace(/\\/g, '/').toLowerCase());
}
return names;
}
async function loadLDrawPathLookup() {
if (!ldrawPathLookupPromise) {
ldrawPathLookupPromise = fetch(LDRAW_PATH_MANIFEST_URL, { cache: 'force-cache' })
.then(response => {
if (!response.ok) {
throw new Error('Path manifest HTTP ' + response.status);
}
return response.text();
})
.then(text => {
const lookup = Object.create(null);
for (const rawLine of text.split(/\r?\n/)) {
const path = rawLine.trim();
if (!path || path.startsWith('#')) continue;
const normalizedPath = path.replace(/\\/g, '/');
const lowerPath = normalizedPath.toLowerCase();
const destination = '../' + normalizedPath;
if (lowerPath.startsWith('p/')) {
// LDraw primitive references normally omit the p/ prefix.
lookup[lowerPath.slice(2)] = destination;
lookup[lowerPath] = destination;
} else if (lowerPath.startsWith('parts/s/')) {
// LDraw subpart references normally use s/<name>.
lookup[lowerPath.slice('parts/'.length)] = destination;
lookup[lowerPath] = destination;
}
}
return lookup;
})
.catch(error => {
// The viewer remains functional without the manifest. Three.js simply
// falls back to its normal parts -> p -> models probing behavior.
console.warn('LDraw path manifest unavailable; using loader fallback.', error);
return Object.create(null);
});
}
return ldrawPathLookupPromise;
}
async function createLDrawFileMap(modelText) {
const lookup = await loadLDrawPathLookup();
const embedded = embeddedFileNames(modelText);
return new Proxy(lookup, {
get(target, property, receiver) {
if (typeof property !== 'string') {
return Reflect.get(target, property, receiver);
}
const key = property.replace(/\\/g, '/').toLowerCase();
// Embedded MPD submodels must always win over library aliases.
if (embedded.has(key)) return undefined;
return target[property] ?? target[key];
},
});
}
// ═══════════════════════════════════════
// SCENE
// ═══════════════════════════════════════
function initScene() {
const el = document.getElementById('canvas-container');
scene = new THREE.Scene();
scene.background = new THREE.Color(isDark ? 0x0f1116 : 0xf3f0e9);
camera = new THREE.PerspectiveCamera(36, 1, 0.1, 100000);
camera.position.set(150, 200, 250);
renderer = new THREE.WebGLRenderer({ antialias: true });
renderer.setPixelRatio(Math.min(window.devicePixelRatio || 1, 2));
renderer.outputColorSpace = THREE.SRGBColorSpace;
renderer.toneMapping = THREE.NeutralToneMapping;
renderer.toneMappingExposure = 0.9;
renderer.shadowMap.enabled = true;
renderer.shadowMap.type = THREE.PCFSoftShadowMap;
el.appendChild(renderer.domElement);
const pmrem = new THREE.PMREMGenerator(renderer);
const room = new RoomEnvironment();
scene.environment = pmrem.fromScene(room, 0.04).texture;
scene.environmentIntensity = 0.22;
room.dispose();
pmrem.dispose();
scene.add(new THREE.HemisphereLight(0xffffff, 0xdfe3e0, 0.52));
const d1 = new THREE.DirectionalLight(0xffffff, 1.35);
d1.position.set(-140, 260, 180);
d1.castShadow = true;
d1.shadow.mapSize.set(2048, 2048);
d1.shadow.camera.left = -1200;
d1.shadow.camera.right = 1200;
d1.shadow.camera.top = 1200;
d1.shadow.camera.bottom = -1200;
d1.shadow.camera.near = 1;
d1.shadow.camera.far = 4000;
d1.shadow.bias = -0.0002;
d1.shadow.normalBias = 0.8;
d1.shadow.radius = 3;
scene.add(d1);
viewerFloorMaterial = new THREE.MeshStandardMaterial({
color: isDark ? 0x151820 : 0xf0ede5,
roughness: 0.95,
metalness: 0,
});
viewerFloor = new THREE.Mesh(
new THREE.PlaneGeometry(6000, 6000),
viewerFloorMaterial
);
viewerFloor.rotation.x = -Math.PI / 2;
viewerFloor.receiveShadow = true;
viewerFloor.visible = false;
scene.add(viewerFloor);
rebuildGrid();
controls = new OrbitControls(camera, renderer.domElement);
controls.enableDamping = true;
controls.dampingFactor = 0.1;
// Allow a complete orbit around the model, including a true underside view.
// Keep a tiny epsilon away from the exact poles to avoid the spherical-camera
// singularity inside OrbitControls.
controls.minPolarAngle = 0.001;
controls.maxPolarAngle = Math.PI - 0.001;
controls.minDistance = 5;
const resize = () => {
const w = Math.max(1, el.clientWidth);
const h = Math.max(1, el.clientHeight);
camera.aspect = w / h;
camera.updateProjectionMatrix();
renderer.setSize(w, h, false);
};
resize();
const resizeObserver = new ResizeObserver(resize);
resizeObserver.observe(el);
(function animate() {
requestAnimationFrame(animate);
controls.update();
updateViewerGroundVisibility();
renderer.render(scene, camera);
})();
}
function rebuildGrid() {
if (gridHelper) {
scene.remove(gridHelper);