Attempts to download the actual model (glTF/glb preferred) and textures (PNG) from Sketchfab viewer. Downloads geometry only if actual data is located.
目前为
// ==UserScript==
// @name ncikkis sketchfab downloader
// @namespace http://tampermonkey.net/
// @version 1.2 // Version incremented for revised geometry logic
// @description Attempts to download the actual model (glTF/glb preferred) and textures (PNG) from Sketchfab viewer. Downloads geometry only if actual data is located.
// @author ncikkis
// @match *://sketchfab.com/3d-models/*
// @icon https://www.google.com/s2/favicons?sz=64&domain=sketchfab.com
// @grant GM_download
// @grant GM_xmlhttpRequest // Kept for potential future network inspection needs
// @grant unsafeWindow
// @run-at document-idle
// ==/UserScript==
(function() {
'use strict';
const LOG_PREFIX = '[ncikkis_SFD]:';
let apiInstance = null;
let downloadButton = null;
console.log(`${LOG_PREFIX} Initializing v1.2...`);
function findApiInstance() {
// Attempt to find the Sketchfab viewer API instance (speculative)
if (unsafeWindow.viewerApp) {
if (typeof unsafeWindow.viewerApp.getViewer === 'function') {
let viewer = unsafeWindow.viewerApp.getViewer();
if (viewer && typeof viewer.getApi === 'function') return viewer.getApi();
}
if(unsafeWindow.viewerApp && unsafeWindow.viewerApp.viewers) {
const viewerKeys = Object.keys(unsafeWindow.viewerApp.viewers);
if (viewerKeys.length > 0) {
const viewer = unsafeWindow.viewerApp.viewers[viewerKeys[0]];
if (viewer && viewer.api) return viewer.api;
}
}
}
if (unsafeWindow.api) return unsafeWindow.api;
console.log(`${LOG_PREFIX} Viewer API instance not found via common patterns.`);
return null;
}
function createDownloadButton() {
if (document.getElementById('ncikkis-sf-download-button')) return;
const viewerElement = document.querySelector('.viewer');
if (!viewerElement) {
console.log(`${LOG_PREFIX} Viewer element not found.`);
return;
}
downloadButton = document.createElement('button');
downloadButton.id = 'ncikkis-sf-download-button';
downloadButton.textContent = 'Download Model';
// Apply styles (same as before)
downloadButton.style.position = 'absolute';
downloadButton.style.top = '10px';
downloadButton.style.right = '10px';
downloadButton.style.zIndex = '9999';
downloadButton.style.padding = '8px 12px';
downloadButton.style.backgroundColor = '#FF0000';
downloadButton.style.color = 'white';
downloadButton.style.border = 'none';
downloadButton.style.borderRadius = '4px';
downloadButton.style.cursor = 'pointer';
downloadButton.style.fontSize = '12px';
downloadButton.style.fontFamily = 'sans-serif';
downloadButton.style.fontWeight = 'bold';
downloadButton.style.boxShadow = '0 2px 5px rgba(0,0,0,0.3)';
downloadButton.addEventListener('click', handleDownload);
viewerElement.style.position = 'relative';
viewerElement.appendChild(downloadButton);
console.log(`${LOG_PREFIX} Download button injected.`);
}
function getModelName() {
const titleElement = document.querySelector('.model-name__label');
if (titleElement) return titleElement.textContent.trim().replace(/[^a-zA-Z0-9_-]/g, '_');
const urlParts = window.location.pathname.split('/');
const modelSlug = urlParts[urlParts.length - 2];
if (modelSlug && modelSlug !== '3d-models') return modelSlug.replace(/[^a-zA-Z0-9_-]/g, '_');
const modelId = urlParts[urlParts.length - 1];
if (modelId) return modelId.replace(/[^a-zA-Z0-9_-]/g, '_');
return 'sketchfab_model';
}
function handleDownload() {
if (!apiInstance) {
console.error(`${LOG_PREFIX} API instance not available.`);
alert('ncikkis Downloader: Could not access Sketchfab API instance.');
return;
}
console.log(`${LOG_PREFIX} Download initiated. Attempting to locate actual model data...`);
downloadButton.textContent = 'Processing...';
downloadButton.disabled = true;
const modelName = getModelName();
let texturesDownloaded = false;
let geometryDownloaded = false;
// Callback to run after both attempts (textures & geometry) are complete
const finalizeCheck = () => {
if (!geometryDownloaded) {
console.warn(`${LOG_PREFIX} Failed to locate or extract actual geometry data.`);
alert(`ncikkis Downloader: Failed to locate downloadable geometry data for this model. Texture download may have been attempted.`);
} else {
console.log(`${LOG_PREFIX} Geometry download initiated.`);
if (!texturesDownloaded) {
console.warn(`${LOG_PREFIX} Texture download attempt complete (may have failed or found no textures).`);
alert(`ncikkis Downloader: Geometry download initiated. Texture download may have failed or no textures were found.`);
} else {
console.log(`${LOG_PREFIX} Texture download attempt complete.`);
alert(`ncikkis Downloader: Geometry and texture download initiated. Check your downloads.`);
}
}
// Reset button regardless of success
downloadButton.textContent = 'Download Model';
downloadButton.disabled = false;
};
let textureAttemptComplete = false;
let geometryAttemptComplete = false;
// --- Attempt Texture Download ---
try {
apiInstance.getTextureList((err, textures) => {
if (err || !textures || textures.length === 0) {
console.warn(`${LOG_PREFIX} Could not retrieve texture list via API or no textures found.`);
} else {
console.log(`${LOG_PREFIX} Found ${textures.length} textures. Downloading...`);
texturesDownloaded = true; // Mark attempt even if individual downloads fail
textures.forEach((texture, index) => {
if (texture && texture.url) {
const textureName = texture.name || `texture_${index}`;
const sanitizedTextureName = textureName.replace(/[^a-zA-Z0-9_-]/g, '_');
const filename = `${modelName}_${sanitizedTextureName}.png`;
console.log(`${LOG_PREFIX} Downloading texture: ${filename} from ${texture.url}`);
GM_download({ url: texture.url, name: filename, onerror: (err) => console.error(`${LOG_PREFIX} Error downloading texture ${filename}:`, err), onload: () => console.log(`${LOG_PREFIX} Texture ${filename} download initiated.`) });
} else {
console.warn(`${LOG_PREFIX} Invalid texture object or URL for texture index ${index}:`, texture);
}
});
}
textureAttemptComplete = true;
if (geometryAttemptComplete) finalizeCheck();
});
} catch (e) {
console.error(`${LOG_PREFIX} Error during API interaction (getTextureList):`, e);
textureAttemptComplete = true;
if (geometryAttemptComplete) finalizeCheck();
}
// --- Attempt Geometry Download (Focus on glTF/glb) ---
console.log(`${LOG_PREFIX} Searching for geometry data (glTF/glb preferred)...`);
try {
// Speculative ways to find the model URL or data:
// 1. Check API response (Hypothetical: maybe getNodeMap or another function returns model URL)
// 2. Inspect `unsafeWindow` for viewer configuration objects
// 3. Check performance entries for loaded resources matching common patterns
let modelUrl = null;
let modelFormat = null; // 'gltf' or 'glb'
// Example: Hypothetical check within unsafeWindow structure (adjust based on actual inspection)
if (unsafeWindow.viewerApp && unsafeWindow.viewerApp.config && unsafeWindow.viewerApp.config.model) {
let modelConf = unsafeWindow.viewerApp.config.model;
if (modelConf.gltfUrl) { modelUrl = modelConf.gltfUrl; modelFormat = 'gltf'; }
else if (modelConf.glbUrl) { modelUrl = modelConf.glbUrl; modelFormat = 'glb'; }
// Add more checks based on observed structure
}
// Example: Check performance entries (less reliable, might miss dynamically loaded URLs)
if (!modelUrl) {
try {
const resources = performance.getEntriesByType('resource');
const sketchfabResources = resources.filter(r => r.name.includes('sketchfab.com') || r.name.includes('skfb.ly'));
// Look for likely candidates based on URL patterns (e.g., containing 'models', 'gltf', 'glb')
const gltfResource = sketchfabResources.find(r => r.name.endsWith('.gltf') || r.name.includes('format=gltf'));
const glbResource = sketchfabResources.find(r => r.name.endsWith('.glb') || r.name.includes('format=glb'));
if (glbResource) { modelUrl = glbResource.name; modelFormat = 'glb'; }
else if (gltfResource) { modelUrl = gltfResource.name; modelFormat = 'gltf'; }
} catch (perfError) {
console.warn(`${LOG_PREFIX} Could not access or parse performance entries:`, perfError);
}
}
// Example: Hypothetical API call (if Sketchfab API offered such a thing)
// if (!modelUrl && typeof apiInstance.getModelUrl === 'function') { ... }
// --- Conditional Download ---
if (modelUrl && modelFormat) {
console.log(`${LOG_PREFIX} Found potential model URL (${modelFormat}): ${modelUrl}`);
const filename = `${modelName}.${modelFormat}`;
try {
GM_download({
url: modelUrl,
name: filename,
onerror: (err) => {
console.error(`${LOG_PREFIX} Error downloading geometry file ${filename}:`, err);
geometryDownloaded = false; // Mark as failed on error
geometryAttemptComplete = true;
if (textureAttemptComplete) finalizeCheck();
},
onload: () => {
console.log(`${LOG_PREFIX} Geometry file ${filename} download initiated.`);
geometryDownloaded = true; // Mark success
geometryAttemptComplete = true;
if (textureAttemptComplete) finalizeCheck();
},
ontimeout: () => {
console.error(`${LOG_PREFIX} Timeout downloading geometry file ${filename}.`);
geometryDownloaded = false;
geometryAttemptComplete = true;
if (textureAttemptComplete) finalizeCheck();
}
});
} catch (downloadError) {
console.error(`${LOG_PREFIX} Error setting up geometry download:`, downloadError);
geometryDownloaded = false;
geometryAttemptComplete = true;
if (textureAttemptComplete) finalizeCheck();
}
} else {
// If no URL or data found after all checks
console.warn(`${LOG_PREFIX} Could not locate a downloadable geometry URL (glTF/glb) via known methods.`);
geometryDownloaded = false;
geometryAttemptComplete = true;
if (textureAttemptComplete) finalizeCheck();
}
} catch (e) {
console.error(`${LOG_PREFIX} Error during geometry search/download attempt:`, e);
geometryDownloaded = false;
geometryAttemptComplete = true;
if (textureAttemptComplete) finalizeCheck();
}
}
// --- Initialization Logic ---
const initCheckInterval = setInterval(() => {
apiInstance = findApiInstance();
const viewerElement = document.querySelector('.viewer');
if (apiInstance && viewerElement) {
clearInterval(initCheckInterval);
console.log(`${LOG_PREFIX} Sketchfab API instance potentially found.`, apiInstance);
createDownloadButton();
} else if (document.readyState === "complete") {
// Allow interval to continue checking
}
}, 2000);
setTimeout(() => {
if (!apiInstance || !document.getElementById('ncikkis-sf-download-button')) {
clearInterval(initCheckInterval);
console.warn(`${LOG_PREFIX} Initialization timed out. API instance or viewer element not found.`);
}
}, 30000);
})();