mirror of
https://github.com/CNCKitchen/stlTexturizer.git
synced 2026-04-07 22:11:32 +00:00
CNCKitchen
6723dcb7b0
- Renamed "Surface Mask" section to "Mask Angles" for clarity in index.html. - Updated translation keys and tooltips to reflect the new terminology in i18n.js. - Removed the erase toggle button from the exclusion panel and implemented Shift key functionality to toggle erase mode in main.js. - Adjusted brush radius handling to improve user experience and updated related UI elements in index.html. - Enhanced the subdivision process to track original face IDs for better masking accuracy in subdivision.js. - Added CSS styles for new UI elements and improved layout in style.css.
1493 lines
62 KiB
JavaScript
1493 lines
62 KiB
JavaScript
import * as THREE from 'three';
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import { initViewer, loadGeometry, setMeshMaterial, setMeshGeometry, setWireframe,
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getControls, getCamera, getCurrentMesh,
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setExclusionOverlay, setHoverPreview, setViewerTheme } from './viewer.js';
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import { loadSTLFile, computeBounds, getTriangleCount } from './stlLoader.js';
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import { loadPresets, loadCustomTexture } from './presetTextures.js';
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import { createPreviewMaterial, updateMaterial } from './previewMaterial.js';
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import { subdivide } from './subdivision.js';
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import { applyDisplacement } from './displacement.js';
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import { decimate } from './decimation.js';
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import { exportSTL } from './exporter.js';
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import { buildAdjacency, bucketFill,
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buildExclusionOverlayGeo, buildFaceWeights } from './exclusion.js';
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import { t, initLang, setLang, getLang, applyTranslations } from './i18n.js';
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// ── State ─────────────────────────────────────────────────────────────────────
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let currentGeometry = null; // original loaded geometry
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let currentBounds = null; // bounds of the original geometry
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let currentStlName = 'model'; // base filename of the loaded STL (no extension)
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let activeMapEntry = null; // { name, texture, imageData, width, height, isCustom? }
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let previewMaterial = null;
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let isExporting = false;
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let previewDebounce = null;
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// ── Exclusion state ───────────────────────────────────────────────────────────
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let excludedFaces = new Set(); // triangle indices in currentGeometry
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let triangleAdjacency = null; // Map from buildAdjacency
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let triangleCentroids = null; // Float32Array from buildAdjacency
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let exclusionTool = null; // 'brush' | 'bucket' | null
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let eraseMode = false;
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let brushIsRadius = false;
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let brushRadius = 5.0;
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let bucketThreshold = 20;
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let isPainting = false;
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let selectionMode = false; // false = exclude painted faces; true = include only painted faces
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let _lastHoverTriIdx = -1; // last triangle index used for hover preview
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const _raycaster = new THREE.Raycaster();
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const settings = {
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mappingMode: 5, // Triplanar default
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scaleU: 0.5,
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scaleV: 0.5,
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amplitude: 0.5,
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offsetU: 0.0,
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offsetV: 0.0,
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rotation: 0,
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refineLength: 1.0,
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maxTriangles: 1_000_000,
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lockScale: true,
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bottomAngleLimit: 5,
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topAngleLimit: 0,
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mappingBlend: 1,
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seamBandWidth: 0.5,
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symmetricDisplacement: false,
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useDisplacement: false,
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};
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// ── Displacement preview state ────────────────────────────────────────────────
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let dispPreviewGeometry = null; // subdivided geometry with smoothNormal attribute
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let dispPreviewBusy = false; // true while async subdivision is running
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let dispPreviewParentMap = null; // Int32Array: subdivided face → original face index
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// ── DOM refs ──────────────────────────────────────────────────────────────────
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const canvas = document.getElementById('viewport');
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const brushCursorEl = document.getElementById('brush-cursor');
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const dropZone = document.getElementById('drop-zone');
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const dropHint = document.getElementById('drop-hint');
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const stlFileInput = document.getElementById('stl-file-input');
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const textureInput = document.getElementById('texture-file-input');
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const presetGrid = document.getElementById('preset-grid');
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const activeMapName = document.getElementById('active-map-name');
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const meshInfo = document.getElementById('mesh-info');
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const exportBtn = document.getElementById('export-btn');
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const exportProgress = document.getElementById('export-progress');
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const exportProgBar = document.getElementById('export-progress-bar');
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const exportProgPct = document.getElementById('export-progress-pct');
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const exportProgLbl = document.getElementById('export-progress-label');
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const triLimitWarning = document.getElementById('tri-limit-warning');
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const wireframeToggle = document.getElementById('wireframe-toggle');
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const mappingSelect = document.getElementById('mapping-mode');
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const scaleUSlider = document.getElementById('scale-u');
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const scaleVSlider = document.getElementById('scale-v');
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const lockScaleBtn = document.getElementById('lock-scale');
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const offsetUSlider = document.getElementById('offset-u');
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const offsetVSlider = document.getElementById('offset-v');
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const amplitudeSlider = document.getElementById('amplitude');
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const refineLenSlider = document.getElementById('refine-length');
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const maxTriSlider = document.getElementById('max-triangles');
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const scaleUVal = document.getElementById('scale-u-val');
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const scaleVVal = document.getElementById('scale-v-val');
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const offsetUVal = document.getElementById('offset-u-val');
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const offsetVVal = document.getElementById('offset-v-val');
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const rotationSlider = document.getElementById('rotation');
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const rotationVal = document.getElementById('rotation-val');
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const amplitudeVal = document.getElementById('amplitude-val');
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const amplitudeWarning = document.getElementById('amplitude-warning');
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const refineLenVal = document.getElementById('refine-length-val');
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const maxTriVal = document.getElementById('max-triangles-val');
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const bottomAngleLimitSlider = document.getElementById('bottom-angle-limit');
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const topAngleLimitSlider = document.getElementById('top-angle-limit');
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const bottomAngleLimitVal = document.getElementById('bottom-angle-limit-val');
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const topAngleLimitVal = document.getElementById('top-angle-limit-val');
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const seamBlendSlider = document.getElementById('seam-blend');
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const seamBlendVal = document.getElementById('seam-blend-val');
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const seamBandWidthSlider = document.getElementById('seam-band-width');
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const seamBandWidthVal = document.getElementById('seam-band-width-val');
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const symmetricDispToggle = document.getElementById('symmetric-displacement');
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const dispPreviewToggle = document.getElementById('displacement-preview');
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// ── Exclusion panel DOM refs ──────────────────────────────────────────────────
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const exclBrushBtn = document.getElementById('excl-brush-btn');
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const exclBucketBtn = document.getElementById('excl-bucket-btn');
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const exclBrushTypeRow = document.getElementById('excl-brush-type-row');
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const exclBrushSingleBtn = document.getElementById('excl-brush-single');
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const exclBrushRadiusBtn = document.getElementById('excl-brush-radius-btn');
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const exclRadiusRow = document.getElementById('excl-radius-row');
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const exclBrushRadiusSlider = document.getElementById('excl-brush-radius-slider');
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const exclBrushRadiusVal = document.getElementById('excl-brush-radius-val');
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const exclThresholdRow = document.getElementById('excl-threshold-row');
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const exclThresholdSlider = document.getElementById('excl-threshold-slider');
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const exclThresholdVal = document.getElementById('excl-threshold-val');
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const exclCount = document.getElementById('excl-count');
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const exclClearBtn = document.getElementById('excl-clear-btn');
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const exclModeExcludeBtn = document.getElementById('excl-mode-exclude');
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const exclModeIncludeBtn = document.getElementById('excl-mode-include');
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const exclSectionHeading = document.getElementById('excl-section-heading');
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const exclHint = document.getElementById('excl-hint');
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// ── License panel DOM refs ────────────────────────────────────────────────────
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const licenseLink = document.getElementById('license-link');
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const licenseOverlay = document.getElementById('license-overlay');
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const licenseClose = document.getElementById('license-close');
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// ── Scale slider log helpers ──────────────────────────────────────────────────
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// Slider stores 0–1000; actual scale spans 0.05–10 on a log axis.
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// Middle position 500 → scale ~0.71 (log midpoint between 0.05 and 10).
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const _LOG_MIN = Math.log(0.05);
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const _LOG_MAX = Math.log(10);
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const scaleToPos = v => Math.round((Math.log(Math.max(0.05, Math.min(10, v))) - _LOG_MIN) / (_LOG_MAX - _LOG_MIN) * 1000);
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const posToScale = p => parseFloat(Math.exp(_LOG_MIN + (p / 1000) * (_LOG_MAX - _LOG_MIN)).toFixed(2));
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// ── Init ──────────────────────────────────────────────────────────────────────
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let PRESETS = [];
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initViewer(canvas);
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// Apply saved theme to 3D viewport on startup
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setViewerTheme(document.documentElement.getAttribute('data-theme') === 'light');
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// Initialise language (reads localStorage / browser preference, applies translations)
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initLang();
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// Sync lang buttons to current language
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(function() {
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const lang = getLang();
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document.querySelectorAll('.lang-btn').forEach(btn => {
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btn.classList.toggle('active', btn.dataset.langCode === lang);
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});
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})();
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// Theme toggle
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document.getElementById('theme-toggle').addEventListener('click', () => {
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const isLight = document.documentElement.getAttribute('data-theme') !== 'light';
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document.documentElement.setAttribute('data-theme', isLight ? 'light' : 'dark');
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localStorage.setItem('stlt-theme', isLight ? 'light' : 'dark');
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setViewerTheme(isLight);
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});
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wireEvents();
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// Sync scale number inputs with the slider's initial position
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scaleUVal.value = posToScale(parseFloat(scaleUSlider.value));
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scaleVVal.value = posToScale(parseFloat(scaleVSlider.value));
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loadPresets().then(presets => {
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PRESETS = presets;
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buildPresetGrid();
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loadDefaultCube();
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// Select Crystal as the default preset
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const noiseIdx = PRESETS.findIndex(p => p.name === 'Crystal');
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const defaultIdx = noiseIdx !== -1 ? noiseIdx : 0;
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const swatches = presetGrid.querySelectorAll('.preset-swatch');
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if (swatches[defaultIdx]) selectPreset(defaultIdx, swatches[defaultIdx]);
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}).catch(err => console.error('Failed to load preset textures:', err));
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// ── Preset grid ───────────────────────────────────────────────────────────────
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function buildPresetGrid() {
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PRESETS.forEach((preset, idx) => {
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const swatch = document.createElement('div');
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swatch.className = 'preset-swatch';
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swatch.title = preset.name;
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// Use the small thumbnail canvas
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swatch.appendChild(preset.thumbCanvas);
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const label = document.createElement('span');
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label.className = 'preset-label';
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label.textContent = preset.name;
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swatch.appendChild(label);
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swatch.addEventListener('click', () => selectPreset(idx, swatch));
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presetGrid.appendChild(swatch);
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});
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}
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function selectPreset(idx, swatchEl) {
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document.querySelectorAll('.preset-swatch').forEach(s => s.classList.remove('active'));
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swatchEl.classList.add('active');
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activeMapEntry = PRESETS[idx];
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activeMapName.textContent = PRESETS[idx].name;
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updatePreview();
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}
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// ── Event wiring ──────────────────────────────────────────────────────────────
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function wireEvents() {
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// ── Language toggle ──
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document.querySelectorAll('.lang-btn').forEach(btn => {
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btn.addEventListener('click', () => {
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const lang = btn.dataset.langCode;
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setLang(lang);
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document.querySelectorAll('.lang-btn').forEach(b =>
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b.classList.toggle('active', b.dataset.langCode === lang));
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// Re-translate <option> elements (innerHTML won't reach these)
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document.querySelectorAll('select[id="mapping-mode"] option[data-i18n-opt]').forEach(opt => {
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opt.textContent = t(opt.dataset.i18nOpt);
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});
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// Refresh dynamic count text to current language
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if (currentGeometry) refreshExclusionOverlay();
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});
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});
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// ── STL loading ──
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stlFileInput.addEventListener('change', (e) => {
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if (e.target.files[0]) handleSTL(e.target.files[0]);
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});
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// Drag & drop on the viewport section
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dropZone.addEventListener('dragover', (e) => {
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e.preventDefault();
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dropZone.classList.add('drag-over');
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});
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dropZone.addEventListener('dragleave', () => dropZone.classList.remove('drag-over'));
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dropZone.addEventListener('drop', (e) => {
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e.preventDefault();
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dropZone.classList.remove('drag-over');
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const file = [...e.dataTransfer.files].find(f => f.name.toLowerCase().endsWith('.stl'));
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if (file) handleSTL(file);
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});
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// Allow clicking the drop zone to open the file picker (except on canvas)
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dropZone.addEventListener('click', (e) => {
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if (e.target === dropZone) stlFileInput.click();
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});
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// ── Custom texture upload ──
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textureInput.addEventListener('change', async (e) => {
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const file = e.target.files[0];
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if (!file) return;
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try {
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activeMapEntry = await loadCustomTexture(file);
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activeMapEntry.isCustom = true;
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activeMapName.textContent = file.name;
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document.querySelectorAll('.preset-swatch').forEach(s => s.classList.remove('active'));
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updatePreview();
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} catch (err) {
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console.error('Failed to load texture:', err);
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}
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});
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// ── Settings ──
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mappingSelect.addEventListener('change', () => {
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settings.mappingMode = parseInt(mappingSelect.value, 10);
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updatePreview();
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});
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// Scale U — when lock is on, mirror to V
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const applyScaleU = (v) => {
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v = Math.max(0.05, Math.min(10, v));
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settings.scaleU = v;
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scaleUSlider.value = scaleToPos(v);
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scaleUVal.value = v;
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if (settings.lockScale) { settings.scaleV = v; scaleVSlider.value = scaleToPos(v); scaleVVal.value = v; }
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clearTimeout(previewDebounce); previewDebounce = setTimeout(updatePreview, 80);
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};
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scaleUSlider.addEventListener('input', () => applyScaleU(posToScale(parseFloat(scaleUSlider.value))));
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scaleUVal.addEventListener('change', () => applyScaleU(parseFloat(scaleUVal.value)));
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// Scale V — when lock is on, mirror to U
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const applyScaleV = (v) => {
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v = Math.max(0.05, Math.min(10, v));
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settings.scaleV = v;
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scaleVSlider.value = scaleToPos(v);
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scaleVVal.value = v;
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if (settings.lockScale) { settings.scaleU = v; scaleUSlider.value = scaleToPos(v); scaleUVal.value = v; }
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clearTimeout(previewDebounce); previewDebounce = setTimeout(updatePreview, 80);
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};
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scaleVSlider.addEventListener('input', () => applyScaleV(posToScale(parseFloat(scaleVSlider.value))));
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scaleVVal.addEventListener('change', () => applyScaleV(parseFloat(scaleVVal.value)));
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// Lock toggle
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lockScaleBtn.addEventListener('click', () => {
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settings.lockScale = !settings.lockScale;
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lockScaleBtn.classList.toggle('active', settings.lockScale);
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lockScaleBtn.setAttribute('aria-pressed', String(settings.lockScale));
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if (settings.lockScale) {
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settings.scaleV = settings.scaleU;
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scaleVSlider.value = scaleToPos(settings.scaleU);
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scaleVVal.value = settings.scaleU;
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updatePreview();
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}
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});
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linkSlider(offsetUSlider, offsetUVal, v => { settings.offsetU = v; return v.toFixed(2); });
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linkSlider(offsetVSlider, offsetVVal, v => { settings.offsetV = v; return v.toFixed(2); });
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linkSlider(rotationSlider, rotationVal, v => { settings.rotation = v; return Math.round(v); });
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linkSlider(amplitudeSlider, amplitudeVal, v => { settings.amplitude = v; checkAmplitudeWarning(); return v.toFixed(2); });
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amplitudeVal.addEventListener('change', checkAmplitudeWarning);
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linkSlider(refineLenSlider, refineLenVal, v => { settings.refineLength = v; return v.toFixed(2); }, false);
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linkSlider(maxTriSlider, maxTriVal, v => { settings.maxTriangles = v; return formatM(v); }, false);
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linkSlider(bottomAngleLimitSlider, bottomAngleLimitVal, v => { settings.bottomAngleLimit = v; return v; });
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linkSlider(topAngleLimitSlider, topAngleLimitVal, v => { settings.topAngleLimit = v; return v; });
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linkSlider(seamBlendSlider, seamBlendVal, v => { settings.mappingBlend = v; return v.toFixed(2); });
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linkSlider(seamBandWidthSlider, seamBandWidthVal, v => { settings.seamBandWidth = v; return v.toFixed(2); });
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symmetricDispToggle.addEventListener('change', () => {
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settings.symmetricDisplacement = symmetricDispToggle.checked;
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updatePreview();
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});
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dispPreviewToggle.addEventListener('change', () => {
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toggleDisplacementPreview(dispPreviewToggle.checked);
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});
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// ── License ──
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licenseLink.addEventListener('click', () => licenseOverlay.classList.remove('hidden'));
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licenseClose.addEventListener('click', () => licenseOverlay.classList.add('hidden'));
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licenseOverlay.addEventListener('click', (e) => {
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if (e.target === licenseOverlay) licenseOverlay.classList.add('hidden');
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});
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// ── Export ──
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exportBtn.addEventListener('click', () => {
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if (sessionStorage.getItem('stlt-no-sponsor') === '1') {
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handleExport();
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return;
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}
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const overlay = document.getElementById('sponsor-overlay');
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const closeBtn = document.getElementById('sponsor-close');
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const storeLink = overlay.querySelector('.sponsor-link');
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overlay.classList.remove('hidden');
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const dismiss = () => {
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if (document.getElementById('sponsor-dont-show').checked) {
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sessionStorage.setItem('stlt-no-sponsor', '1');
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}
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overlay.classList.add('hidden');
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handleExport();
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};
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closeBtn.onclick = dismiss;
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// Also start processing when the user clicks through to the store
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storeLink.onclick = () => setTimeout(dismiss, 150);
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});
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// ── Wireframe ──
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wireframeToggle.addEventListener('change', () => setWireframe(wireframeToggle.checked));
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// ── Exclusion tool wiring ─────────────────────────────────────────────────
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exclBrushBtn.addEventListener('click', () => setExclusionTool('brush'));
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exclBucketBtn.addEventListener('click', () => setExclusionTool('bucket'));
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// Shift key toggles erase mode
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document.addEventListener('keydown', (e) => {
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if (e.key === 'Shift' && exclusionTool) eraseMode = true;
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});
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document.addEventListener('keyup', (e) => {
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if (e.key === 'Shift') eraseMode = false;
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});
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exclBrushSingleBtn.addEventListener('click', () => {
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brushIsRadius = false;
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exclBrushSingleBtn.classList.add('active');
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exclBrushRadiusBtn.classList.remove('active');
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exclRadiusRow.classList.add('hidden');
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canvas.style.cursor = exclusionTool ? 'crosshair' : '';
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brushCursorEl.style.display = 'none';
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});
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exclBrushRadiusBtn.addEventListener('click', () => {
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brushIsRadius = true;
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exclBrushRadiusBtn.classList.add('active');
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exclBrushSingleBtn.classList.remove('active');
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if (exclusionTool === 'brush') exclRadiusRow.classList.remove('hidden');
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if (exclusionTool === 'brush') canvas.style.cursor = 'none';
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});
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exclBrushRadiusSlider.addEventListener('input', () => {
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brushRadius = parseFloat(exclBrushRadiusSlider.value) / 2;
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exclBrushRadiusVal.value = parseFloat(exclBrushRadiusSlider.value);
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});
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exclBrushRadiusVal.addEventListener('change', () => {
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let diam = Math.max(0.2, Math.min(100, parseFloat(exclBrushRadiusVal.value) || 10));
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brushRadius = diam / 2;
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exclBrushRadiusSlider.value = diam;
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exclBrushRadiusVal.value = diam;
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});
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exclThresholdSlider.addEventListener('input', () => {
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bucketThreshold = parseFloat(exclThresholdSlider.value);
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exclThresholdVal.value = bucketThreshold;
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_lastHoverTriIdx = -1; // invalidate hover so next mousemove re-computes
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});
|
||
exclThresholdVal.addEventListener('change', () => {
|
||
bucketThreshold = Math.max(0, Math.min(180, parseFloat(exclThresholdVal.value) || 20));
|
||
exclThresholdSlider.value = bucketThreshold;
|
||
exclThresholdVal.value = bucketThreshold;
|
||
_lastHoverTriIdx = -1;
|
||
});
|
||
|
||
exclClearBtn.addEventListener('click', () => {
|
||
excludedFaces = new Set();
|
||
refreshExclusionOverlay();
|
||
});
|
||
|
||
exclModeExcludeBtn.addEventListener('click', () => setSelectionMode(false));
|
||
exclModeIncludeBtn.addEventListener('click', () => setSelectionMode(true));
|
||
|
||
// ── Canvas mouse events for exclusion painting ────────────────────────────
|
||
canvas.addEventListener('mousedown', (e) => {
|
||
if (!currentGeometry || !exclusionTool || e.button !== 0) return;
|
||
|
||
if (exclusionTool === 'bucket') {
|
||
e.preventDefault();
|
||
_lastHoverTriIdx = -1;
|
||
setHoverPreview(null);
|
||
const triIdx = pickTriangle(e);
|
||
if (triIdx >= 0) {
|
||
const filled = bucketFill(triIdx, triangleAdjacency, bucketThreshold);
|
||
for (const t of filled) {
|
||
if (eraseMode) excludedFaces.delete(t); else excludedFaces.add(t);
|
||
}
|
||
refreshExclusionOverlay();
|
||
_lastHoverTriIdx = -1;
|
||
setHoverPreview(null);
|
||
}
|
||
} else {
|
||
// Brush mode: only start painting if we actually hit the mesh
|
||
const triIdx = pickTriangle(e);
|
||
if (triIdx < 0) return; // miss → let OrbitControls handle the drag
|
||
e.preventDefault();
|
||
getControls().enabled = false;
|
||
isPainting = true;
|
||
_lastHoverTriIdx = -1;
|
||
setHoverPreview(null);
|
||
paintAt(e);
|
||
}
|
||
});
|
||
|
||
canvas.addEventListener('mousemove', (e) => {
|
||
if (exclusionTool === 'brush' && brushIsRadius) {
|
||
updateBrushCursor(e);
|
||
}
|
||
if (isPainting && exclusionTool === 'brush') {
|
||
paintAt(e);
|
||
return;
|
||
}
|
||
if (!isPainting && exclusionTool === 'brush' && currentGeometry) {
|
||
updateBrushHover(e);
|
||
}
|
||
if (!isPainting && exclusionTool === 'bucket' && currentGeometry) {
|
||
updateBucketHover(e);
|
||
}
|
||
});
|
||
|
||
canvas.addEventListener('mouseleave', () => {
|
||
_lastHoverTriIdx = -1;
|
||
setHoverPreview(null);
|
||
brushCursorEl.style.display = 'none';
|
||
});
|
||
|
||
document.addEventListener('mouseup', () => {
|
||
if (!isPainting) return;
|
||
isPainting = false;
|
||
getControls().enabled = true;
|
||
});
|
||
|
||
document.addEventListener('keydown', (e) => {
|
||
if (e.key === 'Escape') {
|
||
if (exclusionTool) setExclusionTool(null);
|
||
licenseOverlay.classList.add('hidden');
|
||
}
|
||
});
|
||
}
|
||
|
||
// ── Exclusion helpers ─────────────────────────────────────────────────────────
|
||
|
||
function setSelectionMode(include) {
|
||
if (selectionMode === include) return;
|
||
selectionMode = include;
|
||
exclModeExcludeBtn.classList.toggle('active', !selectionMode);
|
||
exclModeIncludeBtn.classList.toggle('active', selectionMode);
|
||
exclModeExcludeBtn.setAttribute('aria-pressed', String(!selectionMode));
|
||
exclModeIncludeBtn.setAttribute('aria-pressed', String(selectionMode));
|
||
if (exclusionTool) setExclusionTool(null);
|
||
exclSectionHeading.textContent = selectionMode ? t('sections.surfaceSelection') : t('sections.surfaceMasking');
|
||
exclHint.textContent = selectionMode
|
||
? t('excl.hintInclude')
|
||
: t('excl.hintExclude');
|
||
// Clear the painted set — faces had opposite semantics in the previous mode
|
||
excludedFaces = new Set();
|
||
refreshExclusionOverlay();
|
||
}
|
||
|
||
function setExclusionTool(tool) {
|
||
// Clicking the active tool toggles it off; passing null always deactivates
|
||
exclusionTool = (exclusionTool === tool) ? null : tool;
|
||
|
||
// Exit 3D displacement preview when a masking tool is activated
|
||
if (exclusionTool && settings.useDisplacement) {
|
||
settings.useDisplacement = false;
|
||
dispPreviewToggle.checked = false;
|
||
toggleDisplacementPreview(false);
|
||
}
|
||
exclBrushBtn.classList.toggle('active', exclusionTool === 'brush');
|
||
exclBucketBtn.classList.toggle('active', exclusionTool === 'bucket');
|
||
// Show brush-type row only while brush is active
|
||
exclBrushTypeRow.classList.toggle('hidden', exclusionTool !== 'brush');
|
||
// Show radius row only while brush + radius mode is active
|
||
exclRadiusRow.classList.toggle('hidden', !(exclusionTool === 'brush' && brushIsRadius));
|
||
// Show threshold row only while bucket is active
|
||
exclThresholdRow.classList.toggle('hidden', exclusionTool !== 'bucket');
|
||
canvas.style.cursor = (exclusionTool === 'brush' && brushIsRadius) ? 'none' : exclusionTool ? 'crosshair' : '';
|
||
// Clear hover preview whenever the tool changes or is deactivated
|
||
_lastHoverTriIdx = -1;
|
||
setHoverPreview(null);
|
||
// Hide brush cursor if tool deactivated or switched away from radius brush
|
||
if (!(exclusionTool === 'brush' && brushIsRadius)) {
|
||
brushCursorEl.style.display = 'none';
|
||
}
|
||
// Re-enable controls if tool was deactivated mid-paint
|
||
if (!exclusionTool) {
|
||
isPainting = false;
|
||
getControls().enabled = true;
|
||
}
|
||
}
|
||
|
||
function _canvasNDC(e) {
|
||
const rect = canvas.getBoundingClientRect();
|
||
return new THREE.Vector2(
|
||
((e.clientX - rect.left) / rect.width) * 2 - 1,
|
||
((e.clientY - rect.top) / rect.height) * -2 + 1,
|
||
);
|
||
}
|
||
|
||
// The preview material uses THREE.DoubleSide, so the raycaster can return
|
||
// back-face hits of adjacent triangles that are marginally closer than the
|
||
// intended front-facing triangle. This helper returns the first hit whose
|
||
// face normal (in world space) points toward the camera ray origin.
|
||
const _normalMatrix = new THREE.Matrix3();
|
||
function getFrontFaceHit(hits, mesh) {
|
||
if (!hits.length) return null;
|
||
_normalMatrix.getNormalMatrix(mesh.matrixWorld);
|
||
for (const hit of hits) {
|
||
const wn = hit.face.normal.clone().applyMatrix3(_normalMatrix).normalize();
|
||
if (wn.dot(_raycaster.ray.direction) < 0) return hit;
|
||
}
|
||
return hits[0]; // fallback — should not happen with a closed mesh
|
||
}
|
||
|
||
function pickTriangle(e) {
|
||
const mesh = getCurrentMesh();
|
||
if (!mesh) return -1;
|
||
_raycaster.setFromCamera(_canvasNDC(e), getCamera());
|
||
const hits = _raycaster.intersectObject(mesh);
|
||
const hit = getFrontFaceHit(hits, mesh);
|
||
if (!hit) return -1;
|
||
let fi = hit.faceIndex;
|
||
// When displacement preview is active the mesh uses the subdivided geometry,
|
||
// so the raycaster returns a subdivided face index. Map it back to the
|
||
// original face index so that excludedFaces always stores original indices.
|
||
if (dispPreviewGeometry && mesh.geometry === dispPreviewGeometry && dispPreviewParentMap) {
|
||
fi = dispPreviewParentMap[fi];
|
||
}
|
||
return fi;
|
||
}
|
||
|
||
function paintAt(e) {
|
||
const mesh = getCurrentMesh();
|
||
if (!mesh) return;
|
||
_raycaster.setFromCamera(_canvasNDC(e), getCamera());
|
||
const hits = _raycaster.intersectObject(mesh);
|
||
const hit = getFrontFaceHit(hits, mesh);
|
||
if (!hit) return;
|
||
|
||
// Map subdivided → original face index when displacement preview is active
|
||
let triIdx = hit.faceIndex;
|
||
if (dispPreviewGeometry && mesh.geometry === dispPreviewGeometry && dispPreviewParentMap) {
|
||
triIdx = dispPreviewParentMap[triIdx];
|
||
}
|
||
|
||
if (brushIsRadius) {
|
||
const hitPt = hit.point;
|
||
const triCount = triangleCentroids.length / 3;
|
||
const r2 = brushRadius * brushRadius;
|
||
for (let t = 0; t < triCount; t++) {
|
||
const dx = triangleCentroids[t * 3] - hitPt.x;
|
||
const dy = triangleCentroids[t * 3 + 1] - hitPt.y;
|
||
const dz = triangleCentroids[t * 3 + 2] - hitPt.z;
|
||
if (dx * dx + dy * dy + dz * dz <= r2) {
|
||
if (eraseMode) excludedFaces.delete(t); else excludedFaces.add(t);
|
||
}
|
||
}
|
||
} else {
|
||
if (eraseMode) excludedFaces.delete(triIdx); else excludedFaces.add(triIdx);
|
||
}
|
||
|
||
refreshExclusionOverlay();
|
||
}
|
||
|
||
function refreshExclusionOverlay() {
|
||
if (!currentGeometry) return;
|
||
if (selectionMode) {
|
||
// Include Only mode: tint the complement (non-selected faces) with a pastel blue
|
||
// so the model stays visible against the dark background before any faces are painted.
|
||
const maskGeo = buildExclusionOverlayGeo(currentGeometry, excludedFaces, true);
|
||
setExclusionOverlay(maskGeo, 0x8ab4d4, 0.96);
|
||
} else {
|
||
setExclusionOverlay(buildExclusionOverlayGeo(currentGeometry, excludedFaces), 0xff6600);
|
||
}
|
||
const n = excludedFaces.size;
|
||
exclCount.textContent = selectionMode
|
||
? t(n === 1 ? 'excl.faceSelected' : 'excl.facesSelected', { n: n.toLocaleString() })
|
||
: t(n === 1 ? 'excl.faceExcluded' : 'excl.facesExcluded', { n: n.toLocaleString() });
|
||
|
||
// Update the faceMask attribute on the active preview geometry so the shader
|
||
// reflects user-painted exclusions in real time.
|
||
const activeGeo = (settings.useDisplacement && dispPreviewGeometry)
|
||
? dispPreviewGeometry : currentGeometry;
|
||
updateFaceMask(activeGeo);
|
||
}
|
||
|
||
function updateBrushCursor(e) {
|
||
if (!brushIsRadius || !currentGeometry) {
|
||
brushCursorEl.style.display = 'none';
|
||
return;
|
||
}
|
||
const mesh = getCurrentMesh();
|
||
if (!mesh) { brushCursorEl.style.display = 'none'; return; }
|
||
_raycaster.setFromCamera(_canvasNDC(e), getCamera());
|
||
const hits = _raycaster.intersectObject(mesh);
|
||
const frontHit = getFrontFaceHit(hits, mesh);
|
||
if (!frontHit) { brushCursorEl.style.display = 'none'; return; }
|
||
|
||
const hitPt = frontHit.point;
|
||
const cam = getCamera();
|
||
|
||
// Offset the hit point by brushRadius along the camera's right axis
|
||
// then project both to screen space to get pixel-accurate circle size
|
||
const camRight = new THREE.Vector3().setFromMatrixColumn(cam.matrixWorld, 0).normalize();
|
||
const edgePt = hitPt.clone().addScaledVector(camRight, brushRadius);
|
||
|
||
const rect = canvas.getBoundingClientRect();
|
||
const toScreen = (v) => {
|
||
const c = v.clone().project(cam);
|
||
return {
|
||
x: (c.x * 0.5 + 0.5) * rect.width,
|
||
y: (1 - (c.y * 0.5 + 0.5)) * rect.height,
|
||
};
|
||
};
|
||
|
||
const sc = toScreen(hitPt);
|
||
const se = toScreen(edgePt);
|
||
const screenRadius = Math.sqrt((se.x - sc.x) ** 2 + (se.y - sc.y) ** 2);
|
||
const diam = screenRadius * 2;
|
||
|
||
brushCursorEl.style.display = 'block';
|
||
brushCursorEl.style.left = `${rect.left + sc.x - screenRadius}px`;
|
||
brushCursorEl.style.top = `${rect.top + sc.y - screenRadius}px`;
|
||
brushCursorEl.style.width = `${diam}px`;
|
||
brushCursorEl.style.height = `${diam}px`;
|
||
}
|
||
|
||
function updateBrushHover(e) {
|
||
const mesh = getCurrentMesh();
|
||
if (!mesh) { setHoverPreview(null); return; }
|
||
_raycaster.setFromCamera(_canvasNDC(e), getCamera());
|
||
const hits = _raycaster.intersectObject(mesh);
|
||
const hit = getFrontFaceHit(hits, mesh);
|
||
if (!hit) { _lastHoverTriIdx = -1; setHoverPreview(null); return; }
|
||
|
||
let triIdx = hit.faceIndex;
|
||
if (dispPreviewGeometry && mesh.geometry === dispPreviewGeometry && dispPreviewParentMap) {
|
||
triIdx = dispPreviewParentMap[triIdx];
|
||
}
|
||
if (triIdx === _lastHoverTriIdx) return;
|
||
_lastHoverTriIdx = triIdx;
|
||
|
||
if (brushIsRadius) {
|
||
const hitPt = hit.point;
|
||
const triCount = triangleCentroids.length / 3;
|
||
const r2 = brushRadius * brushRadius;
|
||
const hovered = new Set();
|
||
for (let t = 0; t < triCount; t++) {
|
||
const dx = triangleCentroids[t * 3] - hitPt.x;
|
||
const dy = triangleCentroids[t * 3 + 1] - hitPt.y;
|
||
const dz = triangleCentroids[t * 3 + 2] - hitPt.z;
|
||
if (dx * dx + dy * dy + dz * dz <= r2) hovered.add(t);
|
||
}
|
||
setHoverPreview(buildExclusionOverlayGeo(currentGeometry, hovered));
|
||
} else {
|
||
const hovered = new Set([triIdx]);
|
||
setHoverPreview(buildExclusionOverlayGeo(currentGeometry, hovered));
|
||
}
|
||
}
|
||
|
||
function updateBucketHover(e) {
|
||
const triIdx = pickTriangle(e);
|
||
if (triIdx === _lastHoverTriIdx) return; // unchanged — skip expensive BFS
|
||
_lastHoverTriIdx = triIdx;
|
||
if (triIdx < 0 || !triangleAdjacency) {
|
||
setHoverPreview(null);
|
||
return;
|
||
}
|
||
const hovered = bucketFill(triIdx, triangleAdjacency, bucketThreshold);
|
||
setHoverPreview(buildExclusionOverlayGeo(currentGeometry, hovered));
|
||
}
|
||
|
||
// ── Slider helper ─────────────────────────────────────────────────────────────
|
||
|
||
function linkSlider(slider, valInput, onChangeFn, livePreview = true) {
|
||
const isSpan = valInput.tagName === 'SPAN';
|
||
slider.addEventListener('input', () => {
|
||
const v = parseFloat(slider.value);
|
||
const display = onChangeFn(v);
|
||
if (isSpan) valInput.textContent = display; else valInput.value = display;
|
||
if (livePreview) {
|
||
clearTimeout(previewDebounce);
|
||
previewDebounce = setTimeout(updatePreview, 80);
|
||
}
|
||
});
|
||
if (!isSpan) {
|
||
valInput.addEventListener('change', () => {
|
||
const raw = parseFloat(valInput.value);
|
||
if (isNaN(raw)) { valInput.value = slider.value; return; }
|
||
// Clamp to the input's own min/max (may be wider than the slider range)
|
||
const inMin = parseFloat(valInput.min);
|
||
const inMax = parseFloat(valInput.max);
|
||
const clamped = (!isNaN(inMin) && !isNaN(inMax))
|
||
? Math.max(inMin, Math.min(inMax, raw))
|
||
: raw;
|
||
// Move slider thumb to nearest valid position (saturates at slider edges)
|
||
slider.value = Math.max(parseFloat(slider.min), Math.min(parseFloat(slider.max), clamped));
|
||
valInput.value = onChangeFn(clamped);
|
||
if (livePreview) {
|
||
clearTimeout(previewDebounce);
|
||
previewDebounce = setTimeout(updatePreview, 80);
|
||
}
|
||
});
|
||
}
|
||
}
|
||
|
||
function formatM(n) {
|
||
return n >= 1_000_000 ? `${(n / 1_000_000).toFixed(1)} M`
|
||
: n >= 1_000 ? `${(n / 1_000).toFixed(0)} k`
|
||
: String(n);
|
||
}
|
||
|
||
// ── STL loading ───────────────────────────────────────────────────────────────
|
||
|
||
function loadDefaultCube() {
|
||
// Create a 50×50×50 mm box; convert to non-indexed so it behaves like a
|
||
// real STL (buildAdjacency and displacement expect non-indexed geometry).
|
||
const geo = new THREE.BoxGeometry(50, 50, 50).toNonIndexed();
|
||
geo.computeBoundingBox();
|
||
geo.computeVertexNormals();
|
||
|
||
currentGeometry = geo;
|
||
currentBounds = computeBounds(geo);
|
||
currentStlName = 'cube_50x50x50';
|
||
checkAmplitudeWarning();
|
||
|
||
loadGeometry(geo);
|
||
dropHint.classList.add('hidden');
|
||
|
||
// Reset displacement preview
|
||
if (dispPreviewGeometry) { dispPreviewGeometry.dispose(); dispPreviewGeometry = null; }
|
||
settings.useDisplacement = false;
|
||
dispPreviewToggle.checked = false;
|
||
|
||
// Reset exclusion state
|
||
excludedFaces = new Set();
|
||
exclusionTool = null;
|
||
eraseMode = false;
|
||
isPainting = false;
|
||
exclBrushBtn.classList.remove('active');
|
||
exclBucketBtn.classList.remove('active');
|
||
exclBrushTypeRow.classList.add('hidden');
|
||
exclRadiusRow.classList.add('hidden');
|
||
exclThresholdRow.classList.add('hidden');
|
||
canvas.style.cursor = '';
|
||
setExclusionOverlay(null);
|
||
setHoverPreview(null);
|
||
_lastHoverTriIdx = -1;
|
||
exclCount.textContent = t('excl.initExcluded');
|
||
|
||
const adjData = buildAdjacency(geo);
|
||
triangleAdjacency = adjData.adjacency;
|
||
triangleCentroids = adjData.centroids;
|
||
|
||
settings.scaleU = 0.5; scaleUSlider.value = scaleToPos(0.5); scaleUVal.value = 0.5;
|
||
settings.scaleV = 0.5; scaleVSlider.value = scaleToPos(0.5); scaleVVal.value = 0.5;
|
||
settings.offsetU = 0; offsetUSlider.value = 0; offsetUVal.value = 0;
|
||
settings.offsetV = 0; offsetVSlider.value = 0; offsetVVal.value = 0;
|
||
triLimitWarning.classList.add('hidden');
|
||
|
||
const maxDim = Math.max(currentBounds.size.x, currentBounds.size.y, currentBounds.size.z);
|
||
const defaultEdge = Math.max(0.05, Math.min(5.0, +(maxDim / 200).toFixed(2)));
|
||
settings.refineLength = defaultEdge;
|
||
refineLenSlider.value = defaultEdge;
|
||
refineLenVal.value = defaultEdge;
|
||
|
||
const triCount = getTriangleCount(geo);
|
||
const mb = ((geo.attributes.position.array.byteLength) / 1024 / 1024).toFixed(2);
|
||
const sx = currentBounds.size.x.toFixed(2);
|
||
const sy = currentBounds.size.y.toFixed(2);
|
||
const sz = currentBounds.size.z.toFixed(2);
|
||
meshInfo.textContent = t('ui.meshInfo', { n: triCount.toLocaleString(), mb, sx, sy, sz });
|
||
|
||
exportBtn.disabled = (activeMapEntry === null);
|
||
updatePreview();
|
||
}
|
||
|
||
async function handleSTL(file) {
|
||
try {
|
||
const { geometry, bounds } = await loadSTLFile(file);
|
||
currentGeometry = geometry;
|
||
currentBounds = bounds;
|
||
currentStlName = file.name.replace(/\.stl$/i, '');
|
||
checkAmplitudeWarning();
|
||
|
||
// Dispose old preview material and reset state for the new mesh
|
||
if (previewMaterial) {
|
||
previewMaterial.dispose();
|
||
previewMaterial = null;
|
||
}
|
||
|
||
// Auto-select first preset on first load
|
||
if (!activeMapEntry && PRESETS.length > 0) {
|
||
activeMapEntry = PRESETS[0];
|
||
activeMapName.textContent = PRESETS[0].name;
|
||
const swatches = document.querySelectorAll('.preset-swatch');
|
||
if (swatches.length > 0) swatches[0].classList.add('active');
|
||
}
|
||
mappingSelect.value = String(settings.mappingMode);
|
||
|
||
// Show mesh with a default material until a map is selected
|
||
loadGeometry(geometry);
|
||
dropHint.classList.add('hidden');
|
||
|
||
// Reset displacement preview for the new mesh
|
||
if (dispPreviewGeometry) { dispPreviewGeometry.dispose(); dispPreviewGeometry = null; }
|
||
settings.useDisplacement = false;
|
||
dispPreviewToggle.checked = false;
|
||
|
||
// Reset exclusion state for the new mesh
|
||
excludedFaces = new Set();
|
||
exclusionTool = null;
|
||
eraseMode = false;
|
||
isPainting = false;
|
||
exclBrushBtn.classList.remove('active');
|
||
exclBucketBtn.classList.remove('active');
|
||
exclBrushTypeRow.classList.add('hidden');
|
||
exclRadiusRow.classList.add('hidden');
|
||
exclThresholdRow.classList.add('hidden');
|
||
canvas.style.cursor = '';
|
||
setExclusionOverlay(null);
|
||
setHoverPreview(null);
|
||
_lastHoverTriIdx = -1;
|
||
exclCount.textContent = t('excl.initExcluded');
|
||
// Build adjacency data for brush/bucket tools (synchronous; fast enough for
|
||
// typical STL sizes processed by this tool)
|
||
const adjData = buildAdjacency(geometry);
|
||
triangleAdjacency = adjData.adjacency;
|
||
triangleCentroids = adjData.centroids;
|
||
|
||
// Reset scale & offset sliders so scale=1 = one tile covers the full bounding box
|
||
const resetVal = (slider, valEl, value) => {
|
||
slider.value = value;
|
||
valEl.value = value;
|
||
};
|
||
settings.scaleU = 0.5; scaleUSlider.value = scaleToPos(0.5); scaleUVal.value = 0.5;
|
||
settings.scaleV = 0.5; scaleVSlider.value = scaleToPos(0.5); scaleVVal.value = 0.5;
|
||
settings.offsetU = 0; resetVal(offsetUSlider, offsetUVal, 0);
|
||
settings.offsetV = 0; resetVal(offsetVSlider, offsetVVal, 0);
|
||
triLimitWarning.classList.add('hidden');
|
||
|
||
// Default edge length = 1/200 of the largest bounding box dimension
|
||
const maxDim = Math.max(bounds.size.x, bounds.size.y, bounds.size.z);
|
||
const defaultEdge = Math.max(0.05, Math.min(5.0, +(maxDim / 200).toFixed(2)));
|
||
settings.refineLength = defaultEdge;
|
||
refineLenSlider.value = defaultEdge;
|
||
refineLenVal.value = defaultEdge;
|
||
|
||
const triCount = getTriangleCount(geometry);
|
||
const mb = ((geometry.attributes.position.array.byteLength) / 1024 / 1024).toFixed(2);
|
||
const sx = bounds.size.x.toFixed(2);
|
||
const sy = bounds.size.y.toFixed(2);
|
||
const sz = bounds.size.z.toFixed(2);
|
||
meshInfo.textContent = t('ui.meshInfo', { n: triCount.toLocaleString(), mb, sx, sy, sz });
|
||
|
||
exportBtn.disabled = (activeMapEntry === null);
|
||
updatePreview();
|
||
} catch (err) {
|
||
console.error('Failed to load STL:', err);
|
||
alert(t('alerts.loadFailed', { msg: err.message }));
|
||
}
|
||
}
|
||
|
||
// ── Live preview ──────────────────────────────────────────────────────────────
|
||
|
||
function checkAmplitudeWarning() {
|
||
if (!currentBounds) return;
|
||
const minDim = Math.min(currentBounds.size.x, currentBounds.size.y, currentBounds.size.z);
|
||
const danger = Math.abs(settings.amplitude) > minDim * 0.1;
|
||
amplitudeWarning.classList.toggle('hidden', !danger);
|
||
amplitudeSlider.classList.toggle('amp-danger', danger);
|
||
amplitudeVal.classList.toggle('amp-danger', danger);
|
||
}
|
||
|
||
/**
|
||
* Set (or update) the `faceMask` vertex attribute on a geometry.
|
||
* 1.0 = textured, 0.0 = user-excluded. Angle masking stays in the shader.
|
||
*
|
||
* Always creates a fresh Float32BufferAttribute so that Three.js allocates a
|
||
* new WebGL buffer and uploads the current data. This avoids subtle buffer-
|
||
* caching issues where in-place array edits + needsUpdate could keep stale
|
||
* GPU data on some drivers.
|
||
*/
|
||
function updateFaceMask(geometry) {
|
||
if (!geometry) return;
|
||
const posCount = geometry.attributes.position.count;
|
||
const triCount = posCount / 3;
|
||
const maskArr = new Float32Array(posCount);
|
||
|
||
// Fast path: no user exclusion active
|
||
if (excludedFaces.size === 0 && !selectionMode) {
|
||
maskArr.fill(1.0);
|
||
} else {
|
||
const isDisp = (geometry === dispPreviewGeometry && dispPreviewParentMap);
|
||
for (let t = 0; t < triCount; t++) {
|
||
const origFace = isDisp ? dispPreviewParentMap[t] : t;
|
||
const excluded = selectionMode ? !excludedFaces.has(origFace) : excludedFaces.has(origFace);
|
||
const val = excluded ? 0.0 : 1.0;
|
||
maskArr[t * 3] = val;
|
||
maskArr[t * 3 + 1] = val;
|
||
maskArr[t * 3 + 2] = val;
|
||
}
|
||
}
|
||
|
||
geometry.setAttribute('faceMask', new THREE.Float32BufferAttribute(maskArr, 1));
|
||
|
||
// Ensure faceNormal attribute exists (needed by shader for angle masking).
|
||
// For the original geometry normal == faceNormal; for subdivided geometry
|
||
// addFaceNormals() is called after subdivision, but guard here in case the
|
||
// attribute is still missing.
|
||
if (!geometry.attributes.faceNormal) {
|
||
addFaceNormals(geometry);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* Build a mapping from each subdivided face to its nearest original face
|
||
* using a grid-accelerated nearest-centroid lookup, with face normal
|
||
* tiebreaking to prevent boundary faces from being mapped to the wrong
|
||
* original face (e.g. a subdivided face on a cube edge mapped to the
|
||
* adjacent face instead of the correct one).
|
||
*/
|
||
function buildParentFaceMap(subdivGeo) {
|
||
if (!triangleCentroids || !currentGeometry) return null;
|
||
|
||
const origPos = currentGeometry.attributes.position.array;
|
||
const origTriCount = currentGeometry.attributes.position.count / 3;
|
||
const subPos = subdivGeo.attributes.position.array;
|
||
const subTriCount = subdivGeo.attributes.position.count / 3;
|
||
|
||
// Precompute original face normals
|
||
const origNormals = new Float32Array(origTriCount * 3);
|
||
const _e1 = new THREE.Vector3(), _e2 = new THREE.Vector3(), _fn = new THREE.Vector3();
|
||
for (let t = 0; t < origTriCount; t++) {
|
||
const b = t * 9;
|
||
_e1.set(origPos[b + 3] - origPos[b], origPos[b + 4] - origPos[b + 1], origPos[b + 5] - origPos[b + 2]);
|
||
_e2.set(origPos[b + 6] - origPos[b], origPos[b + 7] - origPos[b + 1], origPos[b + 8] - origPos[b + 2]);
|
||
_fn.crossVectors(_e1, _e2).normalize();
|
||
origNormals[t * 3] = _fn.x; origNormals[t * 3 + 1] = _fn.y; origNormals[t * 3 + 2] = _fn.z;
|
||
}
|
||
|
||
// Bounding box of original centroids
|
||
let minX = Infinity, minY = Infinity, minZ = Infinity;
|
||
let maxX = -Infinity, maxY = -Infinity, maxZ = -Infinity;
|
||
for (let i = 0; i < origTriCount; i++) {
|
||
const cx = triangleCentroids[i * 3], cy = triangleCentroids[i * 3 + 1], cz = triangleCentroids[i * 3 + 2];
|
||
if (cx < minX) minX = cx; if (cx > maxX) maxX = cx;
|
||
if (cy < minY) minY = cy; if (cy > maxY) maxY = cy;
|
||
if (cz < minZ) minZ = cz; if (cz > maxZ) maxZ = cz;
|
||
}
|
||
const pad = 1e-3;
|
||
minX -= pad; minY -= pad; minZ -= pad;
|
||
maxX += pad; maxY += pad; maxZ += pad;
|
||
|
||
const res = Math.max(4, Math.min(128, Math.ceil(Math.cbrt(origTriCount) * 2)));
|
||
const dx = (maxX - minX) / res || 1;
|
||
const dy = (maxY - minY) / res || 1;
|
||
const dz = (maxZ - minZ) / res || 1;
|
||
|
||
// Build spatial grid of original centroids
|
||
const grid = new Map();
|
||
const cellKey = (ix, iy, iz) => (ix * res + iy) * res + iz;
|
||
for (let i = 0; i < origTriCount; i++) {
|
||
const cx = triangleCentroids[i * 3], cy = triangleCentroids[i * 3 + 1], cz = triangleCentroids[i * 3 + 2];
|
||
const ix = Math.max(0, Math.min(res - 1, Math.floor((cx - minX) / dx)));
|
||
const iy = Math.max(0, Math.min(res - 1, Math.floor((cy - minY) / dy)));
|
||
const iz = Math.max(0, Math.min(res - 1, Math.floor((cz - minZ) / dz)));
|
||
const k = cellKey(ix, iy, iz);
|
||
const cell = grid.get(k);
|
||
if (cell) cell.push(i); else grid.set(k, [i]);
|
||
}
|
||
|
||
// For each subdivided face, find nearest original face by centroid distance
|
||
// with face-normal tiebreaking to resolve boundary ambiguity.
|
||
const parentMap = new Int32Array(subTriCount);
|
||
for (let st = 0; st < subTriCount; st++) {
|
||
const base = st * 9;
|
||
const sx = (subPos[base] + subPos[base + 3] + subPos[base + 6]) / 3;
|
||
const sy = (subPos[base + 1] + subPos[base + 4] + subPos[base + 7]) / 3;
|
||
const sz = (subPos[base + 2] + subPos[base + 5] + subPos[base + 8]) / 3;
|
||
|
||
// Subdivided face normal
|
||
_e1.set(subPos[base + 3] - subPos[base], subPos[base + 4] - subPos[base + 1], subPos[base + 5] - subPos[base + 2]);
|
||
_e2.set(subPos[base + 6] - subPos[base], subPos[base + 7] - subPos[base + 1], subPos[base + 8] - subPos[base + 2]);
|
||
_fn.crossVectors(_e1, _e2).normalize();
|
||
const snx = _fn.x, sny = _fn.y, snz = _fn.z;
|
||
|
||
const ix = Math.max(0, Math.min(res - 1, Math.floor((sx - minX) / dx)));
|
||
const iy = Math.max(0, Math.min(res - 1, Math.floor((sy - minY) / dy)));
|
||
const iz = Math.max(0, Math.min(res - 1, Math.floor((sz - minZ) / dz)));
|
||
|
||
let bestDist = Infinity, bestIdx = 0;
|
||
// Two-pass: prefer original faces whose normal aligns with the subdivided
|
||
// face (dot > 0.4 ≈ within ~66°), then among those pick the nearest
|
||
// centroid. This prevents boundary faces at sharp seams (cube edges etc.)
|
||
// from being mapped to the adjacent face even when that face's centroid
|
||
// happens to be closer. Falls back to pure nearest-centroid if no
|
||
// normal-matching candidate is found.
|
||
let bestDistAligned = Infinity, bestIdxAligned = -1;
|
||
for (let dix = -1; dix <= 1; dix++) {
|
||
for (let diy = -1; diy <= 1; diy++) {
|
||
for (let diz = -1; diz <= 1; diz++) {
|
||
const nix = ix + dix, niy = iy + diy, niz = iz + diz;
|
||
if (nix < 0 || nix >= res || niy < 0 || niy >= res || niz < 0 || niz >= res) continue;
|
||
const cell = grid.get(cellKey(nix, niy, niz));
|
||
if (!cell) continue;
|
||
for (const oi of cell) {
|
||
const cdx = sx - triangleCentroids[oi * 3];
|
||
const cdy = sy - triangleCentroids[oi * 3 + 1];
|
||
const cdz = sz - triangleCentroids[oi * 3 + 2];
|
||
const centroidDist = cdx * cdx + cdy * cdy + cdz * cdz;
|
||
if (centroidDist < bestDist) { bestDist = centroidDist; bestIdx = oi; }
|
||
const dot = snx * origNormals[oi * 3] + sny * origNormals[oi * 3 + 1] + snz * origNormals[oi * 3 + 2];
|
||
if (dot > 0.4 && centroidDist < bestDistAligned) {
|
||
bestDistAligned = centroidDist; bestIdxAligned = oi;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
// If the local grid search didn't find a normal-aligned original face
|
||
// (common for sparse original meshes like cubes where face centroids
|
||
// are far from the grid cell of a corner-adjacent subdivided face),
|
||
// fall back to a brute-force scan over ALL original faces.
|
||
if (bestIdxAligned < 0) {
|
||
for (let oi = 0; oi < origTriCount; oi++) {
|
||
const cdx = sx - triangleCentroids[oi * 3];
|
||
const cdy = sy - triangleCentroids[oi * 3 + 1];
|
||
const cdz = sz - triangleCentroids[oi * 3 + 2];
|
||
const centroidDist = cdx * cdx + cdy * cdy + cdz * cdz;
|
||
if (centroidDist < bestDist) { bestDist = centroidDist; bestIdx = oi; }
|
||
const dot = snx * origNormals[oi * 3] + sny * origNormals[oi * 3 + 1] + snz * origNormals[oi * 3 + 2];
|
||
if (dot > 0.4 && centroidDist < bestDistAligned) {
|
||
bestDistAligned = centroidDist; bestIdxAligned = oi;
|
||
}
|
||
}
|
||
}
|
||
parentMap[st] = bestIdxAligned >= 0 ? bestIdxAligned : bestIdx;
|
||
}
|
||
|
||
return parentMap;
|
||
}
|
||
|
||
function updatePreview() {
|
||
if (!currentGeometry || !currentBounds) return;
|
||
|
||
const fullSettings = { ...settings, bounds: currentBounds };
|
||
|
||
if (!activeMapEntry) {
|
||
// No map yet — plain material
|
||
if (previewMaterial) {
|
||
setMeshMaterial(null);
|
||
previewMaterial.dispose();
|
||
previewMaterial = null;
|
||
}
|
||
exportBtn.disabled = true;
|
||
return;
|
||
}
|
||
|
||
// Choose geometry: subdivided preview (with smoothNormal attribute) or original
|
||
const activeGeo = (settings.useDisplacement && dispPreviewGeometry)
|
||
? dispPreviewGeometry
|
||
: currentGeometry;
|
||
|
||
// Ensure faceMask attribute is current before rendering
|
||
updateFaceMask(activeGeo);
|
||
|
||
if (!previewMaterial) {
|
||
previewMaterial = createPreviewMaterial(activeMapEntry.texture, fullSettings);
|
||
loadGeometry(activeGeo, previewMaterial);
|
||
} else {
|
||
updateMaterial(previewMaterial, activeMapEntry.texture, fullSettings);
|
||
}
|
||
|
||
exportBtn.disabled = false;
|
||
}
|
||
|
||
// ── Displacement preview ──────────────────────────────────────────────────────
|
||
|
||
/**
|
||
* Compute and set flat geometric face normals as a `faceNormal` attribute.
|
||
* Unlike the `normal` attribute (which may be smooth/interpolated after
|
||
* subdivision), `faceNormal` is always the true per-triangle normal computed
|
||
* from the cross product of the triangle's edges. The shader uses this for
|
||
* angle-based masking so that smooth normals at edges don't cause mask bleeding.
|
||
*/
|
||
function addFaceNormals(geometry) {
|
||
const pos = geometry.attributes.position.array;
|
||
const count = geometry.attributes.position.count;
|
||
const fn = new Float32Array(count * 3);
|
||
const vA = new THREE.Vector3(), vB = new THREE.Vector3(), vC = new THREE.Vector3();
|
||
const e1 = new THREE.Vector3(), e2 = new THREE.Vector3(), n = new THREE.Vector3();
|
||
for (let i = 0; i < count; i += 3) {
|
||
vA.set(pos[i * 3], pos[i * 3 + 1], pos[i * 3 + 2]);
|
||
vB.set(pos[(i+1) * 3], pos[(i+1) * 3 + 1], pos[(i+1) * 3 + 2]);
|
||
vC.set(pos[(i+2) * 3], pos[(i+2) * 3 + 1], pos[(i+2) * 3 + 2]);
|
||
e1.subVectors(vB, vA);
|
||
e2.subVectors(vC, vA);
|
||
n.crossVectors(e1, e2).normalize();
|
||
for (let v = 0; v < 3; v++) {
|
||
fn[(i + v) * 3] = n.x;
|
||
fn[(i + v) * 3 + 1] = n.y;
|
||
fn[(i + v) * 3 + 2] = n.z;
|
||
}
|
||
}
|
||
geometry.setAttribute('faceNormal', new THREE.Float32BufferAttribute(fn, 3));
|
||
}
|
||
|
||
/**
|
||
* Compute area-weighted smooth normals for a non-indexed geometry and store
|
||
* them as a `smoothNormal` vec3 attribute. Every copy of the same position
|
||
* gets the same averaged normal so vertex-shader displacement is watertight.
|
||
*/
|
||
function addSmoothNormals(geometry) {
|
||
const pos = geometry.attributes.position.array;
|
||
const count = geometry.attributes.position.count;
|
||
|
||
const QUANT = 1e4;
|
||
const key = (x, y, z) =>
|
||
`${Math.round(x * QUANT)}_${Math.round(y * QUANT)}_${Math.round(z * QUANT)}`;
|
||
|
||
// Accumulate area-weighted buffer normals per unique position.
|
||
// The subdivision pipeline splits indexed vertices at sharp dihedral edges
|
||
// (>30°) so the interpolated buffer normals are smooth across soft edges
|
||
// (cylinder, sphere) but sharp across hard edges (cube). Using these buffer
|
||
// normals instead of geometric face normals eliminates visible faceting steps
|
||
// on round surfaces while still preserving hard edges.
|
||
const nrmMap = new Map();
|
||
const nrm = geometry.attributes.normal.array;
|
||
const vA = new THREE.Vector3(), vB = new THREE.Vector3(), vC = new THREE.Vector3();
|
||
const e1 = new THREE.Vector3(), e2 = new THREE.Vector3(), fn = new THREE.Vector3();
|
||
|
||
for (let i = 0; i < count; i += 3) {
|
||
vA.set(pos[i * 3], pos[i * 3 + 1], pos[i * 3 + 2]);
|
||
vB.set(pos[(i + 1) * 3], pos[(i + 1) * 3 + 1], pos[(i + 1) * 3 + 2]);
|
||
vC.set(pos[(i + 2) * 3], pos[(i + 2) * 3 + 1], pos[(i + 2) * 3 + 2]);
|
||
e1.subVectors(vB, vA);
|
||
e2.subVectors(vC, vA);
|
||
fn.crossVectors(e1, e2);
|
||
const area = fn.length();
|
||
if (area < 1e-12) continue;
|
||
for (let v = 0; v < 3; v++) {
|
||
const vi = i + v;
|
||
const nx = nrm[vi * 3], ny = nrm[vi * 3 + 1], nz = nrm[vi * 3 + 2];
|
||
const k = key(pos[vi * 3], pos[vi * 3 + 1], pos[vi * 3 + 2]);
|
||
const prev = nrmMap.get(k);
|
||
if (prev) {
|
||
prev[0] += nx * area;
|
||
prev[1] += ny * area;
|
||
prev[2] += nz * area;
|
||
} else {
|
||
nrmMap.set(k, [nx * area, ny * area, nz * area]);
|
||
}
|
||
}
|
||
}
|
||
|
||
// Normalize accumulated normals
|
||
for (const n of nrmMap.values()) {
|
||
const len = Math.sqrt(n[0] * n[0] + n[1] * n[1] + n[2] * n[2]);
|
||
if (len > 1e-12) { n[0] /= len; n[1] /= len; n[2] /= len; }
|
||
}
|
||
|
||
// Write smoothNormal attribute
|
||
const sn = new Float32Array(count * 3);
|
||
for (let i = 0; i < count; i++) {
|
||
const k = key(pos[i * 3], pos[i * 3 + 1], pos[i * 3 + 2]);
|
||
const n = nrmMap.get(k);
|
||
if (n) { sn[i * 3] = n[0]; sn[i * 3 + 1] = n[1]; sn[i * 3 + 2] = n[2]; }
|
||
else { sn[i * 3] = 0; sn[i * 3 + 1] = 0; sn[i * 3 + 2] = 1; }
|
||
}
|
||
geometry.setAttribute('smoothNormal', new THREE.Float32BufferAttribute(sn, 3));
|
||
}
|
||
|
||
/**
|
||
* Toggle displacement preview on/off.
|
||
* When enabled: subdivides the current geometry to a moderate resolution,
|
||
* computes smooth normals, and switches the viewer to the subdivided
|
||
* geometry with vertex-shader displacement.
|
||
* When disabled: reverts to the original geometry with bump-only preview.
|
||
*/
|
||
async function toggleDisplacementPreview(enable) {
|
||
settings.useDisplacement = enable;
|
||
|
||
if (!enable) {
|
||
// Revert to original geometry with bump-only shading.
|
||
if (currentGeometry && previewMaterial) {
|
||
updateMaterial(previewMaterial, activeMapEntry?.texture, { ...settings, bounds: currentBounds });
|
||
updateFaceMask(currentGeometry);
|
||
setMeshGeometry(currentGeometry);
|
||
}
|
||
// Dispose the subdivided preview geometry (no longer on the mesh)
|
||
if (dispPreviewGeometry) {
|
||
dispPreviewGeometry.dispose();
|
||
dispPreviewGeometry = null;
|
||
}
|
||
dispPreviewParentMap = null;
|
||
return;
|
||
}
|
||
|
||
// Need a model and texture to subdivide
|
||
if (!currentGeometry || !currentBounds || !activeMapEntry) {
|
||
dispPreviewToggle.checked = false;
|
||
settings.useDisplacement = false;
|
||
return;
|
||
}
|
||
|
||
if (dispPreviewBusy) return;
|
||
dispPreviewBusy = true;
|
||
|
||
try {
|
||
// Choose a preview edge length: coarser than export for performance.
|
||
// Target ~maxDim/80 so a 50 mm cube gets ~0.6 mm edges → ~100 k triangles.
|
||
const maxDim = Math.max(currentBounds.size.x, currentBounds.size.y, currentBounds.size.z);
|
||
const previewEdge = Math.max(0.1, maxDim / 80);
|
||
|
||
await yieldFrame();
|
||
|
||
const { geometry: subdivided, faceParentId } = await subdivide(
|
||
currentGeometry, previewEdge, null, null, { fast: true }
|
||
);
|
||
|
||
addSmoothNormals(subdivided);
|
||
addFaceNormals(subdivided);
|
||
|
||
// Dispose previous preview geometry if any
|
||
if (dispPreviewGeometry) dispPreviewGeometry.dispose();
|
||
dispPreviewGeometry = subdivided;
|
||
|
||
// Use the face parent IDs tracked through subdivision (O(n) instead of spatial search)
|
||
dispPreviewParentMap = faceParentId;
|
||
updateFaceMask(subdivided);
|
||
|
||
// Force material recreation so it binds the new geometry with smoothNormal
|
||
if (previewMaterial) {
|
||
previewMaterial.dispose();
|
||
previewMaterial = null;
|
||
}
|
||
const fullSettings = { ...settings, bounds: currentBounds };
|
||
previewMaterial = createPreviewMaterial(activeMapEntry.texture, fullSettings);
|
||
setMeshGeometry(dispPreviewGeometry);
|
||
setMeshMaterial(previewMaterial);
|
||
|
||
|
||
} catch (err) {
|
||
console.error('Displacement preview failed:', err);
|
||
dispPreviewToggle.checked = false;
|
||
settings.useDisplacement = false;
|
||
} finally {
|
||
dispPreviewBusy = false;
|
||
}
|
||
}
|
||
|
||
// ── Export pipeline ───────────────────────────────────────────────────────────
|
||
|
||
/**
|
||
* Builds per-non-indexed-vertex weights (1.0 = excluded from subdivision/displacement)
|
||
* that combine the user-painted exclusion set AND the top/bottom angle mask.
|
||
*/
|
||
function buildCombinedFaceWeights(geometry, excludedFaces, invert, settings) {
|
||
const weights = buildFaceWeights(geometry, excludedFaces, invert);
|
||
|
||
const hasAngleMask = settings.bottomAngleLimit > 0 || settings.topAngleLimit > 0;
|
||
if (!hasAngleMask) return weights;
|
||
|
||
const posAttr = geometry.attributes.position;
|
||
const triCount = posAttr.count / 3;
|
||
const vA = new THREE.Vector3();
|
||
const vB = new THREE.Vector3();
|
||
const vC = new THREE.Vector3();
|
||
const edge1 = new THREE.Vector3();
|
||
const edge2 = new THREE.Vector3();
|
||
const faceNrm = new THREE.Vector3();
|
||
|
||
for (let t = 0; t < triCount; t++) {
|
||
if (weights[t * 3] > 0.99) continue; // already excluded
|
||
vA.fromBufferAttribute(posAttr, t * 3);
|
||
vB.fromBufferAttribute(posAttr, t * 3 + 1);
|
||
vC.fromBufferAttribute(posAttr, t * 3 + 2);
|
||
edge1.subVectors(vB, vA);
|
||
edge2.subVectors(vC, vA);
|
||
faceNrm.crossVectors(edge1, edge2);
|
||
const faceArea = faceNrm.length();
|
||
const faceNzNorm = faceArea > 1e-12 ? faceNrm.z / faceArea : 0;
|
||
const faceAngle = Math.acos(Math.abs(faceNzNorm)) * (180 / Math.PI);
|
||
const angleMasked = faceNzNorm < 0
|
||
? (settings.bottomAngleLimit > 0 && faceAngle <= settings.bottomAngleLimit)
|
||
: (settings.topAngleLimit > 0 && faceAngle <= settings.topAngleLimit);
|
||
if (angleMasked) {
|
||
weights[t * 3] = 1.0;
|
||
weights[t * 3 + 1] = 1.0;
|
||
weights[t * 3 + 2] = 1.0;
|
||
}
|
||
}
|
||
return weights;
|
||
}
|
||
|
||
async function handleExport() {
|
||
if (!currentGeometry || !activeMapEntry || isExporting) return;
|
||
isExporting = true;
|
||
exportBtn.classList.add('busy');
|
||
exportProgress.classList.remove('hidden');
|
||
|
||
try {
|
||
setProgress(0.02, t('progress.subdividing'));
|
||
await yieldFrame();
|
||
|
||
// Build per-vertex exclusion weights combining user-painted exclusion + angle masking.
|
||
// Faces masked by top/bottom angle limits are treated the same as user-excluded faces
|
||
// so subdivision skips their interior edges too, saving triangles where no
|
||
// displacement will be applied.
|
||
const hasAngleMask = settings.bottomAngleLimit > 0 || settings.topAngleLimit > 0;
|
||
const faceWeights = (excludedFaces.size > 0 || selectionMode || hasAngleMask)
|
||
? buildCombinedFaceWeights(currentGeometry, excludedFaces, selectionMode, settings)
|
||
: null;
|
||
|
||
const { geometry: subdivided, safetyCapHit } = await subdivide(
|
||
currentGeometry, settings.refineLength,
|
||
(p) => setProgress(0.02 + p * 0.35, t('progress.subdividing')),
|
||
faceWeights
|
||
);
|
||
|
||
const subTriCount = subdivided.attributes.position.count / 3;
|
||
setProgress(0.38, t('progress.applyingDisplacement', { n: subTriCount.toLocaleString() }));
|
||
|
||
const displaced = await runAsync(() =>
|
||
applyDisplacement(
|
||
subdivided,
|
||
activeMapEntry.imageData,
|
||
activeMapEntry.width,
|
||
activeMapEntry.height,
|
||
settings,
|
||
currentBounds,
|
||
(p) => setProgress(0.38 + p * 0.32, t('progress.displacingVertices'))
|
||
)
|
||
);
|
||
|
||
const dispTriCount = displaced.attributes.position.count / 3;
|
||
const needsDecimation = dispTriCount > settings.maxTriangles;
|
||
triLimitWarning.classList.toggle('hidden', !safetyCapHit);
|
||
// Re-apply translated warning text in case language changed since last export
|
||
triLimitWarning.textContent = t('warnings.safetyCapHit');
|
||
|
||
let finalGeometry = displaced;
|
||
if (needsDecimation) {
|
||
setProgress(0.71, t('progress.decimatingTo', { from: dispTriCount.toLocaleString(), to: settings.maxTriangles.toLocaleString() }));
|
||
finalGeometry = await runAsync(() =>
|
||
decimate(
|
||
displaced,
|
||
settings.maxTriangles,
|
||
(p) => {
|
||
const cur = Math.round(dispTriCount - (dispTriCount - settings.maxTriangles) * p);
|
||
setProgress(
|
||
0.71 + p * 0.25,
|
||
t('progress.decimating', { cur: cur.toLocaleString(), to: settings.maxTriangles.toLocaleString() })
|
||
);
|
||
}
|
||
)
|
||
);
|
||
}
|
||
|
||
// Flat-bottom clamp: when bottom faces are masked (bottomAngleLimit > 0),
|
||
// any vertex that ended up below the original model's bottom layer gets
|
||
// snapped back up to that Z. Only the Z-value is changed.
|
||
if (settings.bottomAngleLimit > 0) {
|
||
const bottomZ = currentBounds.min.z;
|
||
const posArr = finalGeometry.attributes.position.array;
|
||
for (let i = 2; i < posArr.length; i += 3) {
|
||
if (posArr[i] < bottomZ) posArr[i] = bottomZ;
|
||
}
|
||
finalGeometry.attributes.position.needsUpdate = true;
|
||
// Recompute normals via cross product so they always match winding order.
|
||
const pa = finalGeometry.attributes.position.array;
|
||
const na = finalGeometry.attributes.normal ? finalGeometry.attributes.normal.array : new Float32Array(pa.length);
|
||
for (let i = 0; i < pa.length; i += 9) {
|
||
const ux = pa[i+3]-pa[i], uy = pa[i+4]-pa[i+1], uz = pa[i+5]-pa[i+2];
|
||
const vx = pa[i+6]-pa[i], vy = pa[i+7]-pa[i+1], vz = pa[i+8]-pa[i+2];
|
||
const nx = uy*vz-uz*vy, ny = uz*vx-ux*vz, nz = ux*vy-uy*vx;
|
||
const len = Math.sqrt(nx*nx+ny*ny+nz*nz) || 1;
|
||
na[i] = na[i+3] = na[i+6] = nx/len;
|
||
na[i+1] = na[i+4] = na[i+7] = ny/len;
|
||
na[i+2] = na[i+5] = na[i+8] = nz/len;
|
||
}
|
||
if (!finalGeometry.attributes.normal) finalGeometry.setAttribute('normal', new THREE.Float32BufferAttribute(na, 3));
|
||
else finalGeometry.attributes.normal.needsUpdate = true;
|
||
}
|
||
|
||
setProgress(0.97, t('progress.writingStl'));
|
||
await yieldFrame();
|
||
|
||
const texLabel = activeMapEntry.isCustom ? 'custom' : activeMapEntry.name.replace(/\s+/g, '-');
|
||
const ampLabel = settings.amplitude.toFixed(2).replace('.', 'p');
|
||
const exportName = `${currentStlName}_${texLabel}_amp${ampLabel}.stl`;
|
||
exportSTL(finalGeometry, exportName);
|
||
|
||
setProgress(1.0, t('progress.done'));
|
||
setTimeout(() => {
|
||
exportProgress.classList.add('hidden');
|
||
setProgress(0, '');
|
||
}, 1500);
|
||
} catch (err) {
|
||
console.error('Export failed:', err);
|
||
alert(t('alerts.exportFailed', { msg: err.message }));
|
||
exportProgress.classList.add('hidden');
|
||
} finally {
|
||
isExporting = false;
|
||
exportBtn.classList.remove('busy');
|
||
}
|
||
}
|
||
|
||
function setProgress(fraction, label) {
|
||
const pct = Math.round(fraction * 100);
|
||
exportProgBar.style.width = `${pct}%`;
|
||
exportProgPct.textContent = `${pct}%`;
|
||
exportProgLbl.textContent = label;
|
||
}
|
||
|
||
/** Yield to the browser event loop for one frame, then run fn. */
|
||
function runAsync(fn) {
|
||
return new Promise((resolve, reject) => {
|
||
requestAnimationFrame(() => {
|
||
try { resolve(fn()); }
|
||
catch (e) { reject(e); }
|
||
});
|
||
});
|
||
}
|
||
|
||
function yieldFrame() {
|
||
return new Promise(r => requestAnimationFrame(r));
|
||
}
|