// ==UserScript==
// @name Sketchfab Model Downloader
// @version 0.9.2
// @description Download Sketchfab models
// @author hoosnick
// @include /^https?://(www\.)?sketchfab\.com/.*
// @require https://cdnjs.cloudflare.com/ajax/libs/jszip/3.1.5/jszip.min.js
// @require https://cdnjs.cloudflare.com/ajax/libs/jszip-utils/0.0.2/jszip-utils.min.js
// @require https://cdnjs.cloudflare.com/ajax/libs/FileSaver.js/1.3.8/FileSaver.js
// @run-at document-start
// @grant unsafeWindow
// @grant GM_download
// @namespace https://greasyfork.org/users/1213259
// ==/UserScript==
var zip = new JSZip();
let folder = zip.folder('collection');
var button_dw = true;
var func_drawGeometry = /(this\._stateCache\.drawGeometry\(this\._graphicContext,t\))/g;
var fund_drawArrays = /t\.drawArrays\(t\.TRIANGLES,0,6\)/g;
var func_renderInto1 = /A\.renderInto\(n,E,R/g;
var func_renderInto2 = /g\.renderInto=function\(e,i,r/g;
var func_getResourceImage = /getResourceImage:function\(e,t\){/g;
var func_test = /apply:function\(e\){var t=e instanceof r\.Geometry;/g
var addbtnfunc;
(function () {
'use strict';
var window = unsafeWindow;
console.log("[UserScript] init", window);
window.allmodel = [];
var saveimagecache2 = {};
var objects = {};
var save_image_to_list = function (url, file_name) {
if (!saveimagecache2[url]) {
var mdl = {
name: file_name
}
saveimagecache2[url] = mdl;
}
}
addbtnfunc = function () {
var p = document.evaluate("//div[@class='titlebar']", document, null, 9, null).singleNodeValue;
if (p && !button_dw) {
console.log("[UserScript] add btn download");
var btn = document.createElement("a");
btn.setAttribute("class", "control");
btn.innerHTML = "<pre style='color: red; background-color: #e74c3c; border: none; color: white; padding: 10px 20px; text-align: center; text-decoration: none; display: inline-block; font-size: 16px; margin: 4px 2px; cursor: pointer; border-radius: 8px;'>DOWNLOAD</pre>";
btn.addEventListener("click", dodownload, false);
p.appendChild(btn);
button_dw = true;
} else {
console.log("[UserScript] try add btn later");
setTimeout(addbtnfunc, 3000);
}
}
var dodownload = function () {
console.log("[UserScript] download");
var idx = 0;
window.allmodel.forEach(function (obj) {
var mdl = {
name: "model_" + idx,
obj: parseobj(obj)
}
console.log(mdl);
dosavefile(mdl);
idx++;
})
PackAll();
}
var PackAll = function () {
for (var obj in objects) {
console.log("[UserScript] save file", obj);
folder.file(obj, objects[obj], {
binary: true
});
}
var file_name = document.getElementsByClassName('model-name__label')[0].textContent;
folder.generateAsync({
type: "blob"
}).then(content => saveAs(content, file_name + ".zip"));
}
var parseobj = function (obj) {
console.log("[UserScript]: obj", obj);
var list = [];
obj._primitives.forEach(function (p) {
if (p && p.indices) {
list.push({
'mode': p.mode,
'indices': p.indices._elements
});
}
})
var attr = obj._attributes;
return {
vertex: attr.Vertex._elements,
normal: attr.Normal ? attr.Normal._elements : [],
uv: attr.TexCoord0 ? attr.TexCoord0._elements :
attr.TexCoord1 ? attr.TexCoord1._elements :
attr.TexCoord2 ? attr.TexCoord2._elements :
attr.TexCoord2 ? attr.TexCoord2._elements :
attr.TexCoord3 ? attr.TexCoord3._elements :
attr.TexCoord4 ? attr.TexCoord4._elements :
attr.TexCoord5 ? attr.TexCoord5._elements :
attr.TexCoord6 ? attr.TexCoord6._elements :
attr.TexCoord7 ? attr.TexCoord7._elements :
attr.TexCoord8 ? attr.TexCoord8._elements : [],
primitives: list,
};
}
var dosavefile = function (mdl) {
var obj = mdl.obj;
var str = '';
str += 'mtllib ' + mdl.name + '.mtl\n';
str += 'o ' + mdl.name + '\n';
for (var i = 0; i < obj.vertex.length; i += 3) {
str += 'v ';
for (var j = 0; j < 3; ++j) {
str += obj.vertex[i + j] + ' ';
}
str += '\n';
}
for (i = 0; i < obj.normal.length; i += 3) {
str += 'vn ';
for (j = 0; j < 3; ++j) {
str += obj.normal[i + j] + ' ';
}
str += '\n';
}
for (i = 0; i < obj.uv.length; i += 2) {
str += 'vt ';
for (j = 0; j < 2; ++j) {
str += obj.uv[i + j] + ' ';
}
str += '\n';
}
str += 's on \n';
var vn = obj.normal.length != 0;
var vt = obj.uv.length != 0;
for (i = 0; i < obj.primitives.length; ++i) {
var primitive = obj.primitives[i];
if (primitive.mode == 4 || primitive.mode == 5) {
var strip = (primitive.mode == 5);
for (j = 0; j + 2 < primitive.indices.length; !strip ? j += 3 : j++) {
str += 'f ';
var order = [0, 1, 2];
if (strip && (j % 2 == 1)) {
order = [0, 2, 1];
}
for (var k = 0; k < 3; ++k) {
var faceNum = primitive.indices[j + order[k]] + 1;
str += faceNum;
if (vn || vt) {
str += '/';
if (vt) {
str += faceNum;
}
if (vn) {
str += '/' + faceNum;
}
}
str += ' ';
}
str += '\n';
}
} else {
console.log("[UserScript] dosavefile: unknown primitive mode", primitive);
}
}
str += '\n';
var objblob = new Blob([str], {
type: 'text/plain'
});
objects[mdl.name + ".obj"] = objblob;
}
window.attachbody = function (obj) {
if (obj._faked != true && ((obj.stateset && obj.stateset._name) || obj._name || (obj._parents && obj._parents[0]._name))) {
obj._faked = true;
if (obj._name == "composer layer" || obj._name == "Ground - Geometry") return;
window.allmodel.push(obj)
console.log(obj);
}
}
window.hook_test = function (e, idx) {
console.log("hooked index: " + idx);
console.log(e);
}
window.drawhookcanvas = function (e, imagemodel) {
if ((e.width == 128 && e.height == 128) || (e.width == 32 && e.height == 32) || (e.width == 64 && e.height == 64)) {
return e;
}
if (imagemodel) {
var alpha = e.options.format;
var filename_image = imagemodel.attributes.name;
var uid = imagemodel.attributes.uid;
var url_image = e.url;
var max_size = 0;
var obr = e;
imagemodel.attributes.images.forEach(function (img) {
var alpha_is_check = alpha == "A" ? img.options.format == alpha : true;
var d = img.width;
while (d % 2 == 0) {
d = d / 2;
}
if (img.size > max_size && alpha_is_check && d == 1) {
max_size = img.size;
url_image = img.url;
uid = img.uid;
obr = img;
}
});
if (!saveimagecache2[url_image]) {
console.log(e);
save_image_to_list(url_image, filename_image);
} else {
console.log(e);
}
return obr;
}
return e;
}
window.drawhookimg = function (gl, t) {
console.log(JSON.stringify(t));
var url = t[5].currentSrc;
var width = t[5].width;
var height = t[5].height;
if (!saveimagecache2[url]) {
return;
} else {
console.log("saved texture:" + url);
}
var data = new Uint8Array(width * height * 4);
gl.readPixels(0, 0, width, height, gl.RGBA, gl.UNSIGNED_BYTE, data);
var halfHeight = height / 2 | 0; // the | 0 keeps the result an int
var bytesPerRow = width * 4;
// make a temp buffer to hold one row
var temp = new Uint8Array(width * 4);
for (var y = 0; y < halfHeight; ++y) {
var topOffset = y * bytesPerRow;
var bottomOffset = (height - y - 1) * bytesPerRow;
// make copy of a row on the top half
temp.set(data.subarray(topOffset, topOffset + bytesPerRow));
// copy a row from the bottom half to the top
data.copyWithin(topOffset, bottomOffset, bottomOffset + bytesPerRow);
// copy the copy of the top half row to the bottom half
data.set(temp, bottomOffset);
}
// Create a 2D canvas to store the result
var canvas = document.createElement('canvas');
canvas.width = width;
canvas.height = height;
var context = canvas.getContext('2d');
// Copy the pixels to a 2D canvas
var imageData = context.createImageData(width, height);
imageData.data.set(data);
context.putImageData(imageData, 0, 0);
var re = /(?:\.([^.]+))?$/;
var ext = re.exec(saveimagecache2[url].name)[1];
var name = saveimagecache2[url].name + ".png";
if (ext == "png" || ext == "jpg" || ext == "jpeg") {
var ret = saveimagecache2[url].name.replace('.' + ext, '');
name = ret + ".png";
}
console.log("saved texture to blob " + name);
canvas.toBlob(function (blob) {
objects[name] = blob;
}, "image/png");
}
})();
(() => {
"use strict";
const Event = class {
constructor(script, target) {
this.script = script;
this.target = target;
this._cancel = false;
this._replace = null;
this._stop = false;
}
preventDefault() {
this._cancel = true;
}
stopPropagation() {
this._stop = true;
}
replacePayload(payload) {
this._replace = payload;
}
};
let callbacks = [];
window.addBeforeScriptExecuteListener = (f) => {
if (typeof f !== "function") {
throw new Error("Event handler must be a function.");
}
callbacks.push(f);
};
window.removeBeforeScriptExecuteListener = (f) => {
let i = callbacks.length;
while (i--) {
if (callbacks[i] === f) {
callbacks.splice(i, 1);
}
}
};
const dispatch = (script, target) => {
if (script.tagName !== "SCRIPT") {
return;
}
const e = new Event(script, target);
if (typeof window.onbeforescriptexecute === "function") {
try {
window.onbeforescriptexecute(e);
} catch (err) {
console.error(err);
}
}
for (const func of callbacks) {
if (e._stop) {
break;
}
try {
func(e);
} catch (err) {
console.error(err);
}
}
if (e._cancel) {
script.textContent = "";
script.remove();
} else if (typeof e._replace === "string") {
script.textContent = e._replace;
}
};
const observer = new MutationObserver((mutations) => {
for (const m of mutations) {
for (const n of m.addedNodes) {
dispatch(n, m.target);
}
}
});
observer.observe(document, {
childList: true,
subtree: true,
});
})();
(() => {
"use strict";
window.onbeforescriptexecute = (e) => {
var links_as_arr = Array.from(e.target.childNodes);
links_as_arr.forEach(function (srimgc) {
if (srimgc instanceof HTMLScriptElement) {
if (srimgc.src.indexOf("web/dist/") >= 0 || srimgc.src.indexOf("standaloneViewer") >= 0) {
e.preventDefault();
e.stopPropagation();
var req = new XMLHttpRequest();
req.open('GET', srimgc.src, false);
req.send('');
var jstext = req.responseText;
var ret = func_renderInto1.exec(jstext);
if (ret) {
var index = ret.index + ret[0].length;
var head = jstext.slice(0, index);
var tail = jstext.slice(index);
jstext = head + ",i" + tail;
console.log("[UserScript] Injection: patch_0 injected successful " + srimgc.src);
}
ret = func_renderInto2.exec(jstext);
if (ret) {
var index = ret.index + ret[0].length;
var head = jstext.slice(0, index);
var tail = jstext.slice(index);
jstext = head + ",image_data" + tail;
console.log("[UserScript] Injection: patch_1 injected successful " + srimgc.src);
if (!func_renderInto1.exec(jstext))
console.log("[UserScript] But patch_0 failed " + srimgc.src);
}
ret = fund_drawArrays.exec(jstext);
if (ret) {
var index = ret.index + ret[0].length;
var head = jstext.slice(0, index);
var tail = jstext.slice(index);
jstext = head + ",window.drawhookimg(t,image_data)" + tail;
console.log("[UserScript] Injection: patch_2 injected successful " + srimgc.src);
}
ret = func_getResourceImage.exec(jstext);
if (ret) {
var index = ret.index + ret[0].length;
var head = jstext.slice(0, index);
var tail = jstext.slice(index);
jstext = head + "e = window.drawhookcanvas(e,this._imageModel);" + tail;
console.log("[UserScript] Injection: patch_3 injected successful " + srimgc.src);
}
ret = func_drawGeometry.exec(jstext);
if (ret) {
var index1 = ret.index + ret[1].length;
var head1 = jstext.slice(0, index1);
var tail1 = jstext.slice(index1);
jstext = head1 + ";window.attachbody(t);" + tail1;
console.log("[UserScript] Injection: patch_4 injected successful " + srimgc.src);
setTimeout(addbtnfunc, 3000);
}
var obj = document.createElement('script');
obj.type = "text/javascript";
obj.text = jstext;
document.getElementsByTagName('head')[0].appendChild(obj);
}
}
});
};
})();
