mirror of
https://github.com/CNCKitchen/stlTexturizer.git
synced 2026-04-07 22:11:32 +00:00
CNCKitchen
423 lines
17 KiB
JavaScript
423 lines
17 KiB
JavaScript
import { initViewer, loadGeometry, setMeshMaterial, setWireframe } from './viewer.js';
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import { loadSTLFile, computeBounds, getTriangleCount } from './stlLoader.js';
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import { PRESETS, 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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// ── 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 activeMapEntry = null; // { name, texture, imageData, width, height }
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let previewMaterial = null;
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let isExporting = false;
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const settings = {
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mappingMode: 6, // Cubic default
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scaleU: 1.0,
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scaleV: 1.0,
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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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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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};
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// ── DOM refs ──────────────────────────────────────────────────────────────────
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const canvas = document.getElementById('viewport');
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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 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 amplitudeVal = document.getElementById('amplitude-val');
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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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// ── Scale slider log helpers ──────────────────────────────────────────────────
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// Slider stores 0–1000; actual scale spans 0.1–10 on a log axis.
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// Middle position 500 → scale 1.0 (exact midpoint on log scale).
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const _LOG_MIN = Math.log(0.1);
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const _LOG_MAX = Math.log(10);
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const scaleToPos = v => Math.round((Math.log(Math.max(0.1, 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(1));
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// ── Init ──────────────────────────────────────────────────────────────────────
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initViewer(canvas);
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buildPresetGrid();
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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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// ── 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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// ── 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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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(0.1, 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(0.1, 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(amplitudeSlider, amplitudeVal, v => { settings.amplitude = v; return v.toFixed(2); });
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linkSlider(refineLenSlider, refineLenVal, v => { settings.refineLength = v; return v.toFixed(1); }, 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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// ── Export ──
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exportBtn.addEventListener('click', handleExport);
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// ── Wireframe ──
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wireframeToggle.addEventListener('change', () => setWireframe(wireframeToggle.checked));
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}
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// ── Slider helper ─────────────────────────────────────────────────────────────
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let previewDebounce = null;
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function linkSlider(slider, valInput, onChangeFn, livePreview = true) {
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const isSpan = valInput.tagName === 'SPAN';
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slider.addEventListener('input', () => {
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const v = parseFloat(slider.value);
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const display = onChangeFn(v);
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if (isSpan) valInput.textContent = display; else valInput.value = display;
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if (livePreview) {
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clearTimeout(previewDebounce);
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previewDebounce = setTimeout(updatePreview, 80);
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}
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});
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if (!isSpan) {
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valInput.addEventListener('change', () => {
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const raw = parseFloat(valInput.value);
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if (isNaN(raw)) { valInput.value = slider.value; return; }
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const clamped = Math.max(parseFloat(slider.min), Math.min(parseFloat(slider.max), raw));
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slider.value = clamped;
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valInput.value = onChangeFn(clamped);
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if (livePreview) {
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clearTimeout(previewDebounce);
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previewDebounce = setTimeout(updatePreview, 80);
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}
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});
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}
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}
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function formatM(n) {
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return n >= 1_000_000 ? `${(n / 1_000_000).toFixed(1)} M`
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: n >= 1_000 ? `${(n / 1_000).toFixed(0)} k`
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: String(n);
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}
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// ── STL loading ───────────────────────────────────────────────────────────────
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async function handleSTL(file) {
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try {
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const { geometry, bounds } = await loadSTLFile(file);
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currentGeometry = geometry;
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currentBounds = bounds;
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// Dispose old preview material and reset state for the new mesh
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if (previewMaterial) {
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previewMaterial.dispose();
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previewMaterial = null;
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}
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// Auto-select Brick preset (index 5) on first load
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const brickIdx = PRESETS.findIndex(p => p.name === 'Brick');
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if (brickIdx >= 0 && !activeMapEntry) {
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activeMapEntry = PRESETS[brickIdx];
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activeMapName.textContent = PRESETS[brickIdx].name;
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const swatches = document.querySelectorAll('.preset-swatch');
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swatches.forEach((s, i) => s.classList.toggle('active', i === brickIdx));
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}
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mappingSelect.value = String(settings.mappingMode);
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// Show mesh with a default material until a map is selected
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loadGeometry(geometry);
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dropHint.classList.add('hidden');
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// Reset scale & offset sliders so scale=1 = one tile covers the full bounding box
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const resetVal = (slider, valEl, value) => {
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slider.value = value;
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valEl.value = value;
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};
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settings.scaleU = 1; scaleUSlider.value = scaleToPos(1); scaleUVal.value = 1;
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settings.scaleV = 1; scaleVSlider.value = scaleToPos(1); scaleVVal.value = 1;
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settings.offsetU = 0; resetVal(offsetUSlider, offsetUVal, 0);
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settings.offsetV = 0; resetVal(offsetVSlider, offsetVVal, 0);
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triLimitWarning.classList.add('hidden');
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// Default edge length = 1/100 of the largest bounding box dimension
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const maxDim = Math.max(bounds.size.x, bounds.size.y, bounds.size.z);
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const defaultEdge = Math.max(0.1, Math.min(5.0, +(maxDim / 200).toFixed(2)));
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settings.refineLength = defaultEdge;
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refineLenSlider.value = defaultEdge;
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refineLenVal.value = defaultEdge;
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const triCount = getTriangleCount(geometry);
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const mb = ((geometry.attributes.position.array.byteLength) / 1024 / 1024).toFixed(2);
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meshInfo.textContent = `${triCount.toLocaleString()} triangles · ${mb} MB`;
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exportBtn.disabled = (activeMapEntry === null);
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updatePreview();
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} catch (err) {
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console.error('Failed to load STL:', err);
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alert(`Could not load STL: ${err.message}`);
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}
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}
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// ── Live preview ──────────────────────────────────────────────────────────────
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function updatePreview() {
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if (!currentGeometry || !currentBounds) return;
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const fullSettings = { ...settings, bounds: currentBounds };
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if (!activeMapEntry) {
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// No map yet — plain material
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if (previewMaterial) {
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setMeshMaterial(null);
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previewMaterial.dispose();
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previewMaterial = null;
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}
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exportBtn.disabled = true;
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return;
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}
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if (!previewMaterial) {
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previewMaterial = createPreviewMaterial(activeMapEntry.texture, fullSettings);
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loadGeometry(currentGeometry, previewMaterial);
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} else {
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updateMaterial(previewMaterial, activeMapEntry.texture, fullSettings);
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}
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exportBtn.disabled = false;
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}
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// ── Export pipeline ───────────────────────────────────────────────────────────
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async function handleExport() {
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if (!currentGeometry || !activeMapEntry || isExporting) return;
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isExporting = true;
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exportBtn.classList.add('busy');
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exportProgress.classList.remove('hidden');
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try {
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setProgress(0.02, 'Subdividing mesh…');
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const { geometry: subdivided, safetyCapHit } = await runAsync(() =>
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subdivide(currentGeometry, settings.refineLength,
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(p) => setProgress(0.02 + p * 0.35, 'Subdividing mesh…'))
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);
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const subTriCount = subdivided.attributes.position.count / 3;
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setProgress(0.38, `Applying displacement to ${subTriCount.toLocaleString()} triangles…`);
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const displaced = await runAsync(() =>
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applyDisplacement(
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subdivided,
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activeMapEntry.imageData,
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activeMapEntry.width,
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activeMapEntry.height,
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settings,
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currentBounds,
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(p) => setProgress(0.38 + p * 0.32, `Displacing vertices…`)
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)
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);
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const dispTriCount = displaced.attributes.position.count / 3;
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const needsDecimation = dispTriCount > settings.maxTriangles;
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triLimitWarning.classList.toggle('hidden', !safetyCapHit);
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let finalGeometry = displaced;
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if (needsDecimation) {
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setProgress(0.71, `Decimating ${dispTriCount.toLocaleString()} → ${settings.maxTriangles.toLocaleString()} triangles…`);
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finalGeometry = await runAsync(() =>
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decimate(
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displaced,
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settings.maxTriangles,
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(p) => setProgress(0.71 + p * 0.25, `Decimating mesh…`)
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)
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);
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}
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setProgress(0.97, 'Writing STL…');
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await yieldFrame();
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exportSTL(finalGeometry, 'textured.stl');
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setProgress(1.0, 'Done!');
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setTimeout(() => {
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exportProgress.classList.add('hidden');
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setProgress(0, '');
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}, 1500);
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} catch (err) {
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console.error('Export failed:', err);
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alert(`Export failed: ${err.message}`);
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exportProgress.classList.add('hidden');
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} finally {
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isExporting = false;
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exportBtn.classList.remove('busy');
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}
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}
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function setProgress(fraction, label) {
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exportProgBar.style.width = `${Math.round(fraction * 100)}%`;
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exportProgLbl.textContent = label;
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}
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/** Yield to the browser event loop for one frame, then run fn. */
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function runAsync(fn) {
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return new Promise((resolve, reject) => {
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requestAnimationFrame(() => {
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try { resolve(fn()); }
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catch (e) { reject(e); }
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});
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});
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}
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function yieldFrame() {
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return new Promise(r => requestAnimationFrame(r));
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}
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