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glb_viewer.py
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465 lines (387 loc) · 18 KB
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import sys
import os
import base64
from PySide6.QtWidgets import (
QWidget,
QVBoxLayout,
QHBoxLayout,
QLabel,
QSlider,
QProgressBar,
QApplication,
QFileDialog,
)
from PySide6.QtWebEngineWidgets import QWebEngineView
from PySide6.QtWebEngineCore import QWebEnginePage
from PySide6.QtCore import Qt, Signal, QThread, QUrl, QTimer
from PySide6.QtGui import QDesktopServices
import requests
class ThreeJSViewerWindow(QWebEngineView):
"""基于Three.js的WebGL渲染窗口，确保全局对象正确初始化"""
def __init__(self, parent=None):
super().__init__(parent)
self.page = CustomWebEnginePage(self)
self.setPage(self.page)
# 初始化Three.js页面
self.setHtml(
self.generate_threejs_page(),
baseUrl=QUrl.fromLocalFile(os.getcwd()).toString() + "/",
)
# 初始化状态
self.light_intensity = 0.8
self.ambient_intensity = 0.3
self.initialized = False # 标记JS环境是否初始化完成
# 等待页面加载完成后验证初始化状态
self.page.loadFinished.connect(self._on_page_loaded)
def _on_page_loaded(self, success):
"""页面加载完成后验证初始化状态"""
if success:
# 检查threeViewer是否已正确初始化
self.page.runJavaScript(
"""
if (window.threeViewer && typeof window.threeViewer.loadGLB === 'function') {
true;
} else {
// 尝试重新初始化命名空间
window.threeViewer = window.threeViewer || {};
false;
}
""",
self._verify_initialization,
)
def _verify_initialization(self, result):
"""验证JS环境初始化结果"""
if result:
self.initialized = True
print("Three.js环境初始化成功")
else:
print("Three.js环境初始化失败，将在1秒后重试")
# 1秒后重试验证
QTimer.singleShot(1000, lambda: self._on_page_loaded(True))
def generate_threejs_page(self):
"""生成Three.js渲染页面，确保全局对象正确初始化"""
return """
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Three.js GLB Viewer</title>
<!-- 使用ES Modules方式加载Three.js -->
<script type="importmap">
{
"imports": {
"three": "./runtime/3js/build/three.module.min.js",
"three/addons/": "./runtime/3js/examples/jsm/"
}
}
</script>
<style>
body { margin: 0; overflow: hidden; height: 100vh; }
#loading {
position: absolute; top: 50%; left: 50%;
transform: translate(-50%, -50%); color: white;
font-family: Arial; background: rgba(0,0,0,0.5); padding: 10px;
z-index: 100;
}
</style>
</head>
<body>
<div id="loading">初始化渲染环境...</div>
<!-- 确保全局命名空间在模块加载前定义 -->
<script>
// 优先创建全局对象，避免模块加载时无法访问
window.threeViewer = {
loadGLB: function() { console.error("尚未初始化"); },
setLightIntensity: function() { console.error("尚未初始化"); },
setAmbientIntensity: function() { console.error("尚未初始化"); }
};
</script>
<!-- 模块脚本 -->
<script type="module">
import * as THREE from 'three';
import { GLTFLoader } from 'three/addons/loaders/GLTFLoader.js';
import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
// 初始化场景
const scene = new THREE.Scene();
scene.background = new THREE.Color(0x1a1a1a);
// 相机和渲染器
const camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.1, 1000);
const renderer = new THREE.WebGLRenderer({ antialias: true });
renderer.setSize(window.innerWidth, window.innerHeight);
document.body.appendChild(renderer.domElement);
// 灯光设置
const ambientLight = new THREE.AmbientLight(0xffffff, 0.3);
scene.add(ambientLight);
const directionalLight = new THREE.DirectionalLight(0xffffff, 0.8);
directionalLight.position.set(3, 3, 3);
scene.add(directionalLight);
// 控制器
const controls = new OrbitControls(camera, renderer.domElement);
controls.enableDamping = true;
controls.dampingFactor = 0.05;
// 模型变量
let model = null;
// 窗口大小调整
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize(window.innerWidth, window.innerHeight);
}
window.addEventListener('resize', onWindowResize);
// 渲染循环
function animate() {
requestAnimationFrame(animate);
controls.update();
renderer.render(scene, camera);
}
animate();
// 定义加载函数
function loadGLB(base64Data) {
if (model) {
scene.remove(model);
model = null;
}
try {
const binaryString = atob(base64Data);
const bytes = new Uint8Array(binaryString.length);
for (let i = 0; i < binaryString.length; i++) {
bytes[i] = binaryString.charCodeAt(i);
}
const loader = new GLTFLoader();
loader.parse(
bytes.buffer, '',
(gltf) => {
model = gltf.scene;
scene.add(model);
// 自动调整模型大小和位置
const box = new THREE.Box3().setFromObject(model);
const size = box.getSize(new THREE.Vector3()).length();
const center = box.getCenter(new THREE.Vector3());
const modelScale = 5 / size;
model.position.x = -center.x * modelScale;
model.position.y = -center.y * modelScale;
model.position.z = -center.z * modelScale;
model.scale.set(modelScale, modelScale, modelScale);
camera.position.z = size * 1.5;
document.getElementById('loading').style.display = 'none';
},
(xhr) => {
const percent = (xhr.loaded / xhr.total * 100).toFixed(0);
document.getElementById('loading').textContent = `加载中: ${percent}%`;
},
(error) => {
console.error('模型加载错误:', error);
document.getElementById('loading').textContent = '加载失败: ' + error.message;
}
);
} catch (error) {
console.error('数据处理错误:', error);
document.getElementById('loading').textContent = '数据处理失败';
}
}
// 定义光源控制函数
function setLightIntensity(intensity) {
directionalLight.intensity = intensity;
}
function setAmbientIntensity(intensity) {
ambientLight.intensity = intensity;
}
// 确保全局对象被正确赋值，使用立即执行函数确保执行顺序
(function() {
// 覆盖全局对象的方法
window.threeViewer.loadGLB = loadGLB;
window.threeViewer.setLightIntensity = setLightIntensity;
window.threeViewer.setAmbientIntensity = setAmbientIntensity;
// 通知初始化完成
document.getElementById('loading').textContent = '渲染环境就绪，请加载模型';
})();
</script>
</body>
</html>
"""
# 对外控制接口 - 确保调用时环境已初始化
def load_glb_data(self, base64_data):
"""加载Base64编码的GLB数据，带初始化检查"""
if not self.initialized:
print("Three.js环境尚未准备好，将在1秒后重试")
QTimer.singleShot(1000, lambda: self.load_glb_data(base64_data))
return
# 转义可能的特殊字符
escaped_data = base64_data.replace("'", "\\'").replace('"', '\\"')
self.page.runJavaScript(f"window.threeViewer.loadGLB('{escaped_data}');")
def set_light_intensity(self, intensity):
"""设置光源强度，带初始化检查"""
if not self.initialized:
QTimer.singleShot(1000, lambda: self.set_light_intensity(intensity))
return
self.page.runJavaScript(
f"window.threeViewer.setLightIntensity({intensity / 100.0});"
)
def set_ambient_intensity(self, intensity):
"""设置环境光强度，带初始化检查"""
if not self.initialized:
QTimer.singleShot(1000, lambda: self.set_ambient_intensity(intensity))
return
self.page.runJavaScript(
f"window.threeViewer.setAmbientIntensity({intensity / 100.0});"
)
class CustomWebEnginePage(QWebEnginePage):
"""自定义Web页面，处理链接点击和错误"""
def __init__(self, parent=None):
super().__init__(parent)
# 重写javaScriptConsoleMessage方法来捕获JS错误
def javaScriptConsoleMessage(self, level, message, line_number, source_id):
"""捕获并显示JavaScript错误"""
print(f"JS错误: {message} (行号: {line_number})")
def acceptNavigationRequest(self, url, _type, is_main_frame):
if _type == QWebEnginePage.NavigationTypeLinkClicked:
QDesktopServices.openUrl(url)
return False
return super().acceptNavigationRequest(url, _type, is_main_frame)
class GLBLoaderThread(QThread):
"""异步加载模型的线程"""
load_finished = Signal(bool, str, bytes)
progress_updated = Signal(int)
def __init__(self, url=None, file_path=None, parent=None):
super().__init__(parent)
self.url = url
self.file_path = file_path
def run(self):
try:
file_data = None
if self.url:
self.progress_updated.emit(0)
response = requests.get(self.url, stream=True, verify=False)
total_size = int(response.headers.get("content-length", 0))
downloaded_size = 0
file_data = b""
for chunk in response.iter_content(chunk_size=8192):
if chunk:
file_data += chunk
downloaded_size += len(chunk)
if total_size > 0:
self.progress_updated.emit(
int((downloaded_size / total_size) * 100)
)
if response.status_code != 200:
self.load_finished.emit(
False, f"下载失败: {response.status_code}", None
)
return
elif self.file_path:
if not os.path.exists(self.file_path):
self.load_finished.emit(False, "文件不存在", None)
return
with open(self.file_path, "rb") as f:
file_data = f.read()
self.progress_updated.emit(100)
else:
self.load_finished.emit(False, "未指定加载源", None)
return
self.load_finished.emit(True, "加载成功", file_data)
except Exception as e:
self.load_finished.emit(False, f"加载失败: {str(e)}", None)
class GLBViewerWidget(QWidget):
"""GLB模型查看器控件"""
def __init__(self, parent=None):
super().__init__(parent)
self.init_ui()
self.loader_thread = None
def init_ui(self):
main_layout = QVBoxLayout(self)
self.status_label = QLabel("请加载GLB模型")
self.status_label.setAlignment(Qt.AlignCenter)
self.status_label.setStyleSheet("padding: 5px; background-color: #f0f0f0;")
main_layout.addWidget(self.status_label)
self.progress_bar = QProgressBar()
self.progress_bar.setVisible(False)
main_layout.addWidget(self.progress_bar)
content_layout = QHBoxLayout()
self.gl_window = ThreeJSViewerWindow()
content_layout.addWidget(self.gl_window, 4)
control_panel = QWidget()
control_layout = QVBoxLayout(control_panel)
control_layout.addWidget(
QLabel("Light Source Brightness")
) # QLabel("光源强度"))
self.light_slider = QSlider(Qt.Horizontal)
self.light_slider.setRange(0, 100)
self.light_slider.setValue(80)
control_layout.addWidget(self.light_slider)
control_layout.addWidget(
QLabel("Environmental Light Brightness")
) # ("环境光强度"))
self.ambient_slider = QSlider(Qt.Horizontal)
self.ambient_slider.setRange(0, 100)
self.ambient_slider.setValue(30)
control_layout.addWidget(self.ambient_slider)
info_label = QLabel(
"Tips: Press mouse left button to turn the model, \nspinwheel to scale,\nright button to move"
) # ("提示: 按住鼠标左键拖动可旋转模型\n滚轮缩放，右键平移")
info_label.setStyleSheet("margin-top: 20px; color: #666; font-size: 12px;")
control_layout.addWidget(info_label)
control_layout.addStretch()
content_layout.addWidget(control_panel, 1)
main_layout.addLayout(content_layout, 1)
self.light_slider.valueChanged.connect(self.gl_window.set_light_intensity)
self.ambient_slider.valueChanged.connect(self.gl_window.set_ambient_intensity)
def load_from_file(self, file_path=None):
if not file_path:
file_path, _ = QFileDialog.getOpenFileName(
self, "选择GLB文件", "", "GLB Files (*.glb)"
)
if not file_path:
return
self.status_label.setText(
f"Loading: {os.path.basename(file_path)}"
) # (f"正在加载: {os.path.basename(file_path)}")
self.progress_bar.setVisible(True)
self.progress_bar.setValue(0)
if self.loader_thread and self.loader_thread.isRunning():
self.loader_thread.terminate()
self.loader_thread = GLBLoaderThread(file_path=file_path)
self.loader_thread.progress_updated.connect(self.progress_bar.setValue)
self.loader_thread.load_finished.connect(self._on_load_finished)
self.loader_thread.start()
def load_from_url(self, url):
self.status_label.setText(
f"Loading: {url.split('/')[-1]}"
) # (f"正在下载: {url.split('/')[-1]}")
self.progress_bar.setVisible(True)
self.progress_bar.setValue(0)
if self.loader_thread and self.loader_thread.isRunning():
self.loader_thread.terminate()
self.loader_thread = GLBLoaderThread(url=url)
self.loader_thread.progress_updated.connect(self.progress_bar.setValue)
self.loader_thread.load_finished.connect(self._on_load_finished)
self.loader_thread.start()
def _on_load_finished(self, success, message, file_data):
if success and file_data:
self.status_label.setText("Parsing model...") # ("正在解析模型...")
try:
base64_data = base64.b64encode(file_data).decode("utf-8")
self.gl_window.load_glb_data(base64_data)
self.status_label.setText("Finished loading model") # ("模型加载完成")
except Exception as e:
self.status_label.setText(
f"Load failed:{str(e)}"
) # (f"解析失败: {str(e)}")
else:
self.status_label.setText(
f"Load failed:{message}"
) # (f"加载失败: {message}")
self.progress_bar.setVisible(False)
if __name__ == "__main__":
app = QApplication(sys.argv)
main_window = QWidget()
main_window.setWindowTitle("Three.js GLB模型查看器")
main_window.resize(1000, 700)
layout = QVBoxLayout(main_window)
glb_viewer = GLBViewerWidget()
layout.addWidget(glb_viewer)
main_window.show()
# 延迟加载模型，确保页面有足够时间初始化
QTimer.singleShot(
2000, lambda: glb_viewer.load_from_url("http://localhost/Box.glb")
)
sys.exit(app.exec())