Blender-MCP服务源码5-BlenderSocket插件安装
上一篇讲述了Blender是基于Socket进行本地和远程进行通讯，现在尝试将BlenderSocket插件安装到Blender中进行功能调试
1-核心知识点
- 将开发的BlenderSocket插件安装到Blender中
2-思路整理
- 1）将SocketServer部署到Blender启动SocketServer
- 2）本地使用SocketClient连接SocketServer尝试发送指令
- 3）验证交互结果->如果该逻辑通->后续就可以完善MCP业务指令
3-参考网址
- Blender-MCP-Github地址：https://github.com/ahujasid/blender-mcp
- B站大佬开源Blender开发框架:https://github.com/xzhuah/BlenderAddonPackageTool
- B站大佬开源Blender开发框架教程
- 个人实现代码仓库1：https://gitee.com/enzoism/python_blender_socket
- 个人实现代码仓库2：https://gitee.com/enzoism/python_blender_mcp
4-上手实操
1-部署Socket到Blender
代码地址：https://gitee.com/enzoism/python_blender_mcp
- 部署Socket到Blender
- 本地SocketClient与SocketServer通讯验证
2-本地项目调试
运行test.py文件即可
- SocketClient代码
代码地址：https://gitee.com/enzoism/python_blender_socket
import json
import socketdef send_command(command):"""发送命令到服务器并接收响应"""sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) # 创建TCP套接字try:print("Connecting to server...") # 连接到服务器sock.connect(('localhost', 9876)) # 连接到本地9876端口的服务器# 发送命令json_command = json.dumps(command).encode('utf-8') # 将命令转换为JSON格式并编码为字节sock.sendall(json_command) # 发送命令print(f"Sent command: {command}") # 打印发送的命令# 接收响应sock.settimeout(10) # 设置超时时间为10秒response_data = sock.recv(65536) # 接收响应数据，最大长度为65536字节if response_data: # 如果接收到数据response = json.loads(response_data.decode('utf-8')) # 将响应数据解码为JSON格式return response # 返回响应else:return {"status": "error", "result": "Empty response"} # 如果没有接收到数据，返回错误信息except Exception as e: # 捕获所有异常return {"status": "error", "result": str(e)} # 返回异常信息finally:sock.close() # 关闭套接字if __name__ == "__main__":# 测试ping命令ping_command = {"type": "ping","params": {}}response = send_command(ping_command)print("Server response:", response) # 打印服务器响应3-代码结构
- 1）clazz类中业务类->比如创建一个Person类，有构造方法，有eat方法
- 2）operator中放要clazz类中业务类的操作逻辑
- 3）panels中放看板的点击Operator类->但是不要在这里也业务逻辑（解耦）
- 4）panels中防止看板的判断属性->根据状态更换按钮文字和点击事件
- 1）clazz代码示例
import json
import socket
import threading
import time# 添加自己的业务Operator
class BlenderMCPServer:def __init__(self, host='localhost', port=9876):self.host = hostself.port = portself.running = Falseself.socket = Noneself.client = Noneself.server_thread = Nonedef start(self):self.running = Trueself.server_thread = threading.Thread(target=self._run_server)self.server_thread.daemon = Trueself.server_thread.start()print(f"BlenderMCP server started on {self.host}:{self.port}")def stop(self):self.running = Falseif self.socket:self.socket.close()if self.client:self.client.close()print("BlenderMCP server stopped")def _run_server(self):self.socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)try:self.socket.bind((self.host, self.port))self.socket.listen(1)self.socket.settimeout(1.0) # Add a timeout for acceptwhile self.running:try:self.client, address = self.socket.accept()print(f"Connected to client: {address}")while self.running:try:# Set a timeout for receiving dataself.client.settimeout(15.0)data = self.client.recv(4096)if not data:print("Empty data received, client may have disconnected")breaktry:print(f"Received data: {data.decode('utf-8')}")command = json.loads(data.decode('utf-8'))response = self.execute_command(command)print(f"Sending response: {json.dumps(response)[:100]}...") # Truncate long responses in logself.client.sendall(json.dumps(response).encode('utf-8'))except json.JSONDecodeError:print(f"Invalid JSON received: {data.decode('utf-8')}")self.client.sendall(json.dumps({"status": "error","message": "Invalid JSON format"}).encode('utf-8'))except Exception as e:print(f"Error executing command: {str(e)}")import tracebacktraceback.print_exc()self.client.sendall(json.dumps({"status": "error","message": str(e)}).encode('utf-8'))except socket.timeout:print("Socket timeout while waiting for data")continueexcept Exception as e:print(f"Error receiving data: {str(e)}")breakself.client.close()self.client = Noneexcept socket.timeout:# This is normal - just continue the loopcontinueexcept Exception as e:print(f"Connection error: {str(e)}")if self.client:self.client.close()self.client = Nonetime.sleep(1) # Prevent busy waitingexcept Exception as e:print(f"Server error: {str(e)}")finally:if self.socket:self.socket.close()def execute_command(self, command):"""Execute a Blender command received from the MCP server"""cmd_type = command.get("type")params = command.get("params", {})# Add a simple ping handlerif cmd_type == "ping":print("Handling ping command")return {"status": "success", "result": {"pong": True}}else:return {"status": "error","result": f"Unknown command type: {command.get('type')}"}- 2）operator代码示例
class BlenderMCPOperatorStart(bpy.types.Operator):'''BlenderMCPOperatorStart'''bl_idname = "object.blender_mcp_operator_start"bl_label = "Now_Stop_Click_Start"# 确保在操作之前备份数据，用户撤销操作时可以恢复bl_options = {'REGISTER', 'UNDO'}@classmethoddef poll(cls, context: bpy.types.Context):return context.active_object is not Nonedef execute(self, context: bpy.types.Context):scene = context.scene# 创建socket实例if not hasattr(bpy.types, "blender_mcp_server") or not bpy.types.blender_mcp_server:# Start the serverbpy.types.blender_mcp_server = BlenderMCPServer(port=9876)bpy.types.blender_mcp_server.start()print("---------------------Start MCP Server后重置状态")scene.blender_mcp_server_running = Truereturn {'FINISHED'}class BlenderMCPOperatorStop(bpy.types.Operator):'''BlenderMCPOperatorStop'''bl_idname = "object.blender_mcp_operator_stop"bl_label = "Now_Start_Click_Stop"@classmethoddef poll(cls, context: bpy.types.Context):return context.active_object is not Nonedef execute(self, context: bpy.types.Context):scene = context.scene# 销毁socket实例if hasattr(bpy.types, "blender_mcp_server") or bpy.types.blender_mcp_server:bpy.types.blender_mcp_server.stop()del bpy.types.blender_mcp_serverprint("---------------------Stop MCP Server后重置状态")scene.blender_mcp_server_running = Falsereturn {'FINISHED'}
- 3）panels中Operator代码示例
@reg_order(0)
class ExampleAddonPanel2(BasePanel, bpy.types.Panel):bl_label = "Example Addon Side Bar Panel"bl_idname = "SCENE_PT_sample2"def draw(self, context: bpy.types.Context):layout = self.layoutlayout.label(text="BlenderMCP Panel")# 当前只是为了测试常驻按钮的点击测试-点击对图形缩小0.8layout.operator(StaticButtonOperator.bl_idname)# 测试服务器的装scene = context.sceneif not scene.blender_mcp_server_running:layout.operator(BlenderMCPOperatorStart.bl_idname)print("Start MCP Server")else:layout.operator(BlenderMCPOperatorStop.bl_idname)print("Stop MCP Server")- 4）panels中属性代码示例
import bpy# 添加属性到 Scene 类型
bpy.types.Scene.blender_mcp_server = bpy.props.BoolProperty(name="Blender MCP Server Running",default=False,description="Indicates whether the Blender MCP server is running."
)
bpy.types.Scene.blender_mcp_server_running = bpy.props.BoolProperty(name="Blender MCP Server Running",default=False,description="Indicates whether the Blender MCP server is running."
)
