feat: initial commit

.idea/.gitignore

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+# 默认忽略的文件
+/shelf/
+/workspace.xml

.idea/.name

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+Drawing_Match

.idea/Drawing_Match.iml

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+<?xml version="1.0" encoding="UTF-8"?>
+<module type="PYTHON_MODULE" version="4">
+  <component name="NewModuleRootManager">
+    <content url="file://$MODULE_DIR$" />
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

.idea/inspectionProfiles/profiles_settings.xml

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+<component name="InspectionProjectProfileManager">
+  <settings>
+    <option name="USE_PROJECT_PROFILE" value="false" />
+    <version value="1.0" />
+  </settings>
+</component>

.idea/misc.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Black">
+    <option name="sdkName" value="3denv" />
+  </component>
+  <component name="ProjectRootManager" version="2" project-jdk-name="3denv" project-jdk-type="Python SDK" />
+</project>

.idea/modules.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/Drawing_Match.iml" filepath="$PROJECT_DIR$/.idea/Drawing_Match.iml" />
+    </modules>
+  </component>
+</project>

glWidget_simple.py

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+import sys
+import numpy as np
+from PyQt5.QtWidgets import QApplication, QOpenGLWidget, QVBoxLayout, QWidget
+from PyQt5.QtCore import Qt, pyqtSignal
+from OpenGL.GL import *
+from OpenGL.GLU import *
+from OpenGL.GLUT import glutBitmapCharacter, glutStrokeCharacter, GLUT_BITMAP_HELVETICA_18, GLUT_BITMAP_TIMES_ROMAN_24  # GLUT_BITMAP_HELVETICA_18是运行时调用，标红正常
+
+
+class Simple3DWidget(QOpenGLWidget):
+    pointPicked = pyqtSignal(float, float, float)
+
+    def __init__(self, parent=None):
+        super().__init__(parent)
+        self.vertices = np.array([])  # 顶点数据
+        self.colors = np.array([])  # 颜色数据
+        self.triangles = np.array([], dtype=np.int32)  # 三角面数据 ← 新增
+        self.normals = np.array([])  # 法线数据 ← 新增
+
+        self.rotation = [0.0, 0.0]  # 旋转角度 [俯仰, 偏航]
+        self.zoom = -5.0  # 视距（负值表示拉远）
+        self.pan = [0.0, 0.0]  # 平移偏移 [x, y]
+        self.last_mouse_pos = None  # 鼠标位置
+        self.setMouseTracking(True)  # 启用鼠标跟踪
+        self.display_mode = 'points'  # 默认显示模式: 点云
+        self.axes_display_mode = False
+        self.axes_world_display_mode = True
+
+        # 🔧 模型变换
+        self.model_rotation = [0.0, 0.0]  # 模型的 [俯仰, 偏航]
+        self.model_pan = [0.0, 0.0]  # 模型平移 (x, y)
+        self.model_scale = 1.0  # 模型缩放
+
+        # 🎯 视角（世界）变换
+        self.view_rotation = [0.0, 0.0]  # 模型的 [俯仰, 偏航]
+        self.view_pan = [0.0, 0.0]  # 视点平移 (X, Y)，用于 Ctrl+右键
+        self.view_distance = 8.0  # 视点到目标的距离
+
+
+
+    def initializeGL(self):
+        """初始化 OpenGL 状态"""
+        print("✅ 3D OpenGL 初始化")
+        glEnable(GL_DEPTH_TEST)
+        glEnable(GL_COLOR_MATERIAL)
+        glColorMaterial(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE)
+        glEnable(GL_LIGHT0)
+        glLightfv(GL_LIGHT0, GL_POSITION, (1.0, 1.0, 1.0, 0.0))  # 平行光
+        glClearColor(0.1, 0.1, 0.1, 1.0)
+
+    def resizeGL(self, width, height):
+        """窗口大小改变时调用"""
+        print(f"✅ 调整大小: {width}x{height}")
+        if height == 0:
+            height = 1
+        glViewport(0, 0, width, height)
+        self.update()  # 重新绘制
+
+    def paintGL(self):
+        glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
+        glEnable(GL_DEPTH_TEST)
+
+        glMatrixMode(GL_PROJECTION)
+        glLoadIdentity()
+        gluPerspective(45, self.width() / max(self.height(), 1), 0.1, 100.0)
+
+        glMatrixMode(GL_MODELVIEW)
+        glLoadIdentity()
+
+        # ✅ 使用 gluLookAt 构建轨道摄像机
+        # 视角参数
+        yaw = self.view_rotation[1]  # 偏航角（左右）
+        pitch = self.view_rotation[0]  # 俯仰角（上下）
+        distance = self.view_distance
+
+        # 1. 计算摄像机位置（绕原点轨道）
+        radius = distance
+        cam_x = radius * np.cos(np.radians(yaw)) * np.cos(np.radians(pitch))
+        cam_y = radius * np.sin(np.radians(pitch))
+        cam_z = radius * np.sin(np.radians(yaw)) * np.cos(np.radians(pitch))
+
+        # 2. 目标点 = 世界原点 (0,0,0)
+        target_x, target_y, target_z = 0.0, 0.0, 0.0
+
+        # 3. 上方向（防止翻滚）
+        up_x, up_y, up_z = 0.0, 1.0, 0.0
+
+        # ✅ 设置摄像机（绕原点轨道旋转）
+        gluLookAt(
+            cam_x, cam_y, cam_z,  # 摄像机位置
+            target_x, target_y, target_z,  # 看向目标（世界原点）
+            up_x, up_y, up_z  # 上方向
+        )
+
+        # ✅ 应用视点平移（Ctrl+右键平移）
+        glTranslatef(self.view_pan[0], self.view_pan[1], 0)
+
+        # ✅ 绘制世界坐标系（在原点）
+        if self.axes_world_display_mode:
+            self.drawWorldAxes()
+
+        # ✅ 模型变换
+        glPushMatrix()
+        glTranslatef(self.model_pan[0], self.model_pan[1], 0)
+        glRotatef(self.model_rotation[0], 1, 0, 0)
+        glRotatef(self.model_rotation[1], 0, 1, 0)
+        glScalef(self.model_scale, self.model_scale, self.model_scale)
+
+        if self.axes_display_mode:
+            self.drawModelAxes()
+
+        self._draw_model()
+
+        glPopMatrix()
+
+    def _draw_model(self):
+        """私有方法：绘制模型"""
+        if self.display_mode == 'points' and len(self.vertices) > 0:
+            glPointSize(8.0)
+            glBegin(GL_POINTS)
+            for i, v in enumerate(self.vertices):
+                if i < len(self.colors):
+                    glColor3f(*self.colors[i])
+                glVertex3f(v[0], v[1], v[2])
+            glEnd()
+
+        elif self.display_mode == 'surface' and len(self.triangles) > 0:
+            glEnable(GL_LIGHTING)
+            glEnable(GL_LIGHT0)
+            glBegin(GL_TRIANGLES)
+            for tri in self.triangles:
+                for idx in tri:
+                    if len(self.normals) > idx:
+                        n = self.normals[idx]
+                        if not np.any(np.isnan(n)) and not np.any(np.isinf(n)):
+                            glNormal3f(*n)
+                    if len(self.colors) > idx:
+                        glColor3f(*self.colors[idx])
+                    glVertex3f(*self.vertices[idx])
+            glEnd()
+            glDisable(GL_LIGHTING)
+
+
+    def renderText(self, x, y, z, text):
+        """
+        在指定的三维坐标位置渲染文本。
+
+        :param x: X轴坐标
+        :param y: Y轴坐标
+        :param z: Z轴坐标
+        :param text: 要渲染的文本内容
+        """
+        glRasterPos3f(x, y, z)  # 设置文本位置
+        for ch in text:
+            glutBitmapCharacter(GLUT_BITMAP_TIMES_ROMAN_24, ord(ch))  # 渲染每个字符
+
+    def drawWorldAxes(self):
+        """绘制固定的世界坐标系（左下角）"""
+        glPushMatrix()
+        # 移动到左下角
+        glTranslatef(-4.0, -4.0, -5.0)
+
+        glLineWidth(2.0)
+        glBegin(GL_LINES)
+        # X (红)
+        glColor3f(1, 0, 0)
+        glVertex3f(0, 0, 0);
+        glVertex3f(1000, 0, 0)
+        # Y (绿)
+        glColor3f(0, 1, 0)
+        glVertex3f(0, 0, 0);
+        glVertex3f(0, 1000, 0)
+        # Z (蓝)
+        glColor3f(0, 0, 1)
+        glVertex3f(0, 0, 0);
+        glVertex3f(0, 0, 1000)
+        glEnd()
+
+        # 绘制文本标签
+        glColor3f(1.0, 0.0, 0.0)  # 设置颜色为红色
+        self.renderText(1.5, 0, 0, 'X')  # X轴标签
+
+        glColor3f(0.0, 1.0, 0.0)  # 设置颜色为绿色
+        self.renderText(0, 1.5, 0, 'Y')  # Y轴标签
+
+        glColor3f(0.0, 0.0, 1.0)  # 设置颜色为蓝色
+        self.renderText(0, 0, 1.5, 'Z')  # Z轴标签
+
+        glPopMatrix()
+
+    def drawModelAxes(self):
+        """绘制随模型移动的坐标系"""
+        glPushMatrix()
+        glLineWidth(2.5)
+        glBegin(GL_LINES)
+        # X
+        glColor3f(1, 0, 0)
+        glVertex3f(0, 0, 0);
+        glVertex3f(2, 0, 0)
+        # Y
+        glColor3f(0, 1, 0)
+        glVertex3f(0, 0, 0);
+        glVertex3f(0, 2, 0)
+        # Z
+        glColor3f(0, 0, 1)
+        glVertex3f(0, 0, 0);
+        glVertex3f(0, 0, 2)
+        glEnd()
+
+        # 绘制文本标签
+        glColor3f(1.0, 0.0, 0.0)  # 设置颜色为红色
+        self.renderText(1.5, 0, 0, 'X')  # X轴标签
+
+        glColor3f(0.0, 1.0, 0.0)  # 设置颜色为绿色
+        self.renderText(0, 1.5, 0, 'Y')  # Y轴标签
+
+        glColor3f(0.0, 0.0, 1.0)  # 设置颜色为蓝色
+        self.renderText(0, 0, 1.5, 'Z')  # Z轴标签
+
+        glPopMatrix()
+
+        # if hasattr(self, 'model_scale'):
+        #     glScalef(self.model_scale, self.model_scale, self.model_scale)
+
+    # def paintGLAxes(self):
+    #     """绘制坐标轴"""
+    #     glLineWidth(3.0)
+    #     glBegin(GL_LINES)
+    #     # X轴 - 红色
+    #     glColor3f(1.0, 0.0, 0.0)
+    #     glVertex3f(0.0, 0.0, 0.0)
+    #     glVertex3f(100.0, 0.0, 0.0)
+    #
+    #     # Y轴 - 绿色
+    #     glColor3f(0.0, 1.0, 0.0)
+    #     glVertex3f(0.0, 0.0, 0.0)
+    #     glVertex3f(0.0, 100.0, 0.0)
+    #
+    #     # Z轴 - 蓝色
+    #     glColor3f(0.0, 0.0, 1.0)
+    #     glVertex3f(0.0, 0.0, 0.0)
+    #     glVertex3f(0.0, 0.0, 100.0)
+    #     glEnd()
+    #
+    #     # 绘制文本标签
+    #     glColor3f(1.0, 0.0, 0.0)  # 设置颜色为红色
+    #     self.renderText(1.5, 0, 0, 'X')  # X轴标签
+    #
+    #     glColor3f(0.0, 1.0, 0.0)  # 设置颜色为绿色
+    #     self.renderText(0, 1.5, 0, 'Y')  # Y轴标签
+    #
+    #     glColor3f(0.0, 0.0, 1.0)  # 设置颜色为蓝色
+    #     self.renderText(0, 0, 1.5, 'Z')  # Z轴标签
+
+    def set_data(self, vertices, colors, triangles=None, normals=None):
+        """设置 3D 数据（支持 mesh）"""
+        self.vertices = np.array(vertices, dtype=np.float32)
+        self.colors = np.array(colors, dtype=np.float32)
+
+        if triangles is not None:
+            self.triangles = np.array(triangles, dtype=np.int32)
+        else:
+            self.triangles = np.array([])
+
+        if normals is not None:
+            self.normals = np.array(normals, dtype=np.float32)
+        else:
+            self.normals = np.array([])
+
+        print(f"✅ 设置数据: {len(self.vertices)} 个顶点, {len(self.triangles)} 个三角面")
+        self.update()
+
+    def mousePressEvent(self, event):
+        self.last_mouse_pos = event.pos()
+
+    def mouseMoveEvent(self, event):
+        if self.last_mouse_pos is None:
+            return
+
+        dx = event.x() - self.last_mouse_pos.x()
+        dy = event.y() - self.last_mouse_pos.y()
+
+        is_ctrl = event.modifiers() & Qt.ControlModifier
+
+        if event.buttons() & Qt.LeftButton:
+            if is_ctrl:
+                # Ctrl + 左键：旋转世界（视角）
+                self.view_rotation[0] += dy * 0.5  # 俯仰
+                self.view_rotation[1] += dx * 0.5  # 偏航
+                self.view_rotation[0] = max(-89.0, min(89.0, self.view_rotation[0]))
+            else:
+                # 左键：旋转模型
+                self.model_rotation[0] += dy * 0.5
+                self.model_rotation[1] += dx * 0.5
+
+        elif event.buttons() & Qt.RightButton:
+            if is_ctrl:
+                # Ctrl + 右键：平移世界（视点平移）
+                self.view_pan[0] += dx * 0.01
+                self.view_pan[1] -= dy * 0.01
+            else:
+                # 右键：平移模型
+                self.model_pan[0] += dx * 0.01
+                self.model_pan[1] -= dy * 0.01
+
+        self.last_mouse_pos = event.pos()
+        self.update()
+
+    def wheelEvent(self, event):
+        delta = event.angleDelta().y()
+        self.view_distance -= delta * 0.05
+        self.view_distance = max(1.0, min(50.0, self.view_distance))
+        self.update()
+
+    def toggle_display_mode(self):
+        """切换显示模式：点云 <-> 表面"""
+        if self.display_mode == 'points':
+            self.display_mode = 'surface'
+        else:
+            self.display_mode = 'points'
+        self.update()  # 切换模式后重新绘制
+
+    def toggle_axes_display_mode(self):
+        "切换坐标系显示模式"
+        if self.axes_display_mode == False:
+            self.axes_display_mode = True
+        else:
+            self.axes_display_mode = False
+        self.update()

handle_simple.py

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+from PyQt5.QtCore import QObject, pyqtSlot
+import open3d as o3d
+import numpy as np
+import os
+from OCC.Core.TopoDS import TopoDS_Face
+
+
+class Datahandle(QObject):
+    def __init__(self):
+        super().__init__()
+        self.qml_item = None
+        self.vertices, self.colors = self.load_data()  # 预加载数据
+        self.colors = np.array([])
+        self.triangles = np.array([])  # 新增：三角面索引
+        self.normals = np.array([])  # 新增：法线
+
+    def load_data(self):
+        """
+        加载 3D 数据（这里用随机点云代替实际文件）
+        返回: vertices, colors (numpy arrays)
+        """
+        pcd = o3d.geometry.PointCloud()
+        pcd.points = o3d.utility.Vector3dVector(np.random.rand(5000, 3))
+        pcd.colors = o3d.utility.Vector3dVector(np.random.rand(5000, 3))
+        vertices = np.asarray(pcd.points)
+        colors = np.asarray(pcd.colors)
+        return vertices, colors
+
+    @pyqtSlot('QVariant')
+    def set3DItem(self, item):
+        """接收 QML 中的 QML3DItem 实例"""
+        self.qml_item = item
+        if self.qml_item:
+            self.qml_item.set_data(self.vertices, self.colors)
+            print("✅ 数据已传递给 QML3DItem")
+
+    @pyqtSlot(float, float, float)
+    def onPointPicked(self, x, y, z):
+        """接收从 QML3DItem 发出的拾取信号"""
+        print(f"✅ 拾取到点: ({x:.3f}, {y:.3f}, {z:.3f})")
+        # 这里可以扩展：保存坐标、发送到其他模块等
+
+class Dataload(QObject):
+    def __init__(self):
+        super().__init__()
+        self.qml_item = None
+        self.vertices = np.array([])
+        self.colors = np.array([])
+        self.triangles = np.array([])  # 新增：三角面索引
+        self.normals = np.array([])  # 新增：法线
+
+    def load_data_from_file(self, file_path: str):
+        """
+        使用 numpy-stl 自动识别 STL 格式（兼容旧版本）
+        """
+        print(f"📁 正在加载: {file_path}")
+
+        if not os.path.exists(file_path):
+            print(f"❌ 文件不存在: {file_path}")
+            return np.array([]), np.array([]), np.array([]), np.array([])
+
+        ext = os.path.splitext(file_path)[1].lower()
+        if ext != '.stl':
+            print(f"❌ 不支持的格式: {ext}")
+            return np.array([]), np.array([]), np.array([]), np.array([])
+
+        try:
+            from stl import mesh as stl_mesh
+
+            # ✅ 自动识别格式（旧版本也支持）
+            stl_data = stl_mesh.Mesh.from_file(file_path)
+
+            # 获取三角面 (N, 3, 3)
+            vectors = stl_data.vectors.astype(np.float32)
+            print(f"✅ 加载 {len(vectors)} 个三角面")
+
+            # 展平顶点
+            vertices = vectors.reshape(-1, 3)
+            print(f"原始顶点数: {len(vertices)}")
+
+            # 三角面索引
+            num_triangles = len(vectors)
+            triangles = np.arange(num_triangles * 3, dtype=np.int32).reshape(-1, 3)
+            print(f"三角面数量: {num_triangles}")
+
+            # 法线（每个三角面对应一个法线）
+            normals = stl_data.normals.astype(np.float32)
+            vertex_normals = np.repeat(normals, 3, axis=0)  # 每个顶点复制一次
+            print(f"法线数量: {len(vertex_normals)}")
+
+            # 颜色：使用法线生成
+            colors = (vertex_normals + 1.0) / 2.0
+            if np.any(np.isnan(colors)) or np.any(np.isinf(colors)):
+                colors = np.ones_like(vertex_normals) * 0.8
+
+            # --- 归一化 ---
+            if len(vertices) > 0:
+                min_coords = np.min(vertices, axis=0)
+                max_coords = np.max(vertices, axis=0)
+                center = (min_coords + max_coords) / 2.0
+                scale = np.max(max_coords - min_coords)
+                if scale > 0:
+                    vertices = (vertices - center) / scale * 2.0
+
+                    z_range = np.max(vertices[:, 2]) - np.min(vertices[:, 2])
+                    if z_range < 0.1:
+                        z_center = (np.min(vertices[:, 2]) + np.max(vertices[:, 2])) / 2.0
+                        vertices[:, 2] = (vertices[:, 2] - z_center) * (0.2 / z_range) + z_center
+                        print(f"调整Z轴范围: {z_range:.6f} -> 0.2")
+
+            print(f"✅ 加载成功: {file_path}")
+            return vertices, colors, triangles, vertex_normals
+
+        except Exception as e:
+            print(f"❌ 加载失败: {e}")
+            return np.array([]), np.array([]), np.array([]), np.array([])

main_simple.py

@@ -0,0 +1,153 @@
+# main_simple.py - 使用QOpenGLWidget的新主程序
+
+import sys
+import os
+from PyQt5.QtWidgets import QApplication, QMainWindow, QVBoxLayout, QHBoxLayout, QWidget, QPushButton, QFileDialog
+from PyQt5.QtCore import Qt
+from OpenGL.GLUT import glutInit
+from glWidget_simple import Simple3DWidget
+from handle_simple import Dataload
+
+
+class MainWindow(QMainWindow):
+    def __init__(self):
+        super().__init__()
+        self.setWindowTitle('3D模型查看器')
+        self.setGeometry(100, 100, 1200, 800)
+        
+        # 创建中央部件
+        central_widget = QWidget()
+        self.setCentralWidget(central_widget)
+        
+        # 创建布局
+        layout = QHBoxLayout()
+        central_widget.setLayout(layout)
+
+        # 创建3D渲染器
+        self.gl_widget = Simple3DWidget()
+
+        # 创建控制面板
+        control_panel = QWidget()
+        control_panel.setFixedWidth(200)
+        control_layout = QVBoxLayout()
+        control_panel.setLayout(control_layout)
+
+        # 创建按钮
+        self.open_button = QPushButton("打开STL文件")
+        self.switch_button = QPushButton("切换显示模式")
+        self.axes_button = QPushButton("坐标系显示")
+        self.open_button.clicked.connect(self.open_file)
+        self.switch_button.clicked.connect(self.gl_widget.toggle_display_mode)
+        self.axes_button.clicked.connect(self.gl_widget.toggle_axes_display_mode)
+
+        control_layout.addWidget(self.open_button)
+        control_layout.addWidget(self.switch_button)
+        control_layout.addWidget(self.axes_button)
+
+        # 添加一些空间
+        control_layout.addStretch()
+
+        
+        # 添加到主布局
+        layout.addWidget(control_panel)
+        layout.addWidget(self.gl_widget)
+        
+        # 连接信号
+        self.gl_widget.pointPicked.connect(self.on_point_picked)
+        
+        # 创建数据加载器
+        self.dataload = Dataload()
+
+    def open_file(self):
+        """打开文件对话框，选择 3D 模型文件并根据类型调用对应加载函数"""
+        # 设置文件过滤器
+        filter = (
+            "3D Model Files (*.stp *.step *.stl);;"
+            "STL Files (*.stl);;"
+            "All Files (*)"
+        )
+
+        file_path, _ = QFileDialog.getOpenFileName(
+            self,
+            "选择 3D 模型文件",
+            "",  # 初始路径，可改为上次打开的目录
+            filter
+        )
+
+        if not file_path:
+            print("用户取消选择")
+            return
+
+        if not os.path.exists(file_path):
+            print(f"❌ 文件不存在: {file_path}")
+            return
+
+        # 获取文件扩展名（转小写，便于判断）
+        ext = os.path.splitext(file_path)[1].lower()
+
+        print(f"选中的文件: {file_path}")
+        print(f"文件扩展名: {ext}")
+
+        # 根据扩展名分发到不同加载函数
+        if ext in ['.stp', '.step']:
+            self.load_step_file(file_path)  # 加载 STEP 文件
+        elif ext == '.stl':
+            self.load_stl_file(file_path)  # 加载 STL 文件
+        else:
+            print(f"❌ 不支持的文件格式: {ext}")
+            # 可选：弹出警告框
+            from PyQt5.QtWidgets import QMessageBox
+            QMessageBox.warning(self, "不支持的格式", f"无法加载文件类型: {ext}")
+    
+    def load_stl_file(self, file_path):
+        """加载STL文件"""
+        print(f"📁 正在加载: {file_path}")
+        
+        # 使用Dataload类加载数据
+        vertices, colors,triangles, normals = self.dataload.load_data_from_file(file_path)
+        
+        if len(vertices) == 0:
+            print("❌ 加载失败")
+            return
+        
+        # 设置数据到渲染器
+        self.gl_widget.set_data(vertices, colors,triangles, normals)
+        print("✅ 数据已设置到渲染器")
+
+    def load_step_file(self, file_path):
+        """加载STL文件"""
+        print(f"📁 正在加载: {file_path}")
+
+        # 使用Dataload类加载数据
+        vertices, colors, triangles, normals = self.dataload.load_step_file(file_path)
+
+        if len(vertices) == 0:
+            print("❌ 加载失败")
+            return
+
+        # 设置数据到渲染器
+        self.gl_widget.set_data(vertices, colors, triangles, normals)
+        print("✅ 数据已设置到渲染器")
+    
+    def on_point_picked(self, x, y, z):
+        """点拾取回调"""
+        print(f"✅ 拾取到点: ({x:.3f}, {y:.3f}, {z:.3f})")
+
+def main():
+    print("当前工作目录:", os.getcwd())
+    app = QApplication(sys.argv)
+
+    # 初始化 GLUT（必须在创建任何 OpenGL 上下文前调用）
+    glutInit(sys.argv)
+
+
+    window = MainWindow()
+    window.show()
+    
+    print("✅ 3D模型查看器启动成功")
+    print("点击'打开STL文件'按钮来加载模型")
+    
+    return app.exec_()
+
+if __name__ == "__main__":
+    main() 

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+#761 = DIRECTION ( 'NONE',  ( 0.000000000000000000, 0.000000000000000000, -1.000000000000000000 ) ) ;
+#762 = DATE_AND_TIME ( #58, #188 ) ;
+#763 = VECTOR ( 'NONE', #261, 1000.000000000000000 ) ;
+ENDSEC;
+END-ISO-10303-21;

models/立方体.stl

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