【pycad】让Cpython在CAD中开发

枫叶棋语 发表于 2023-7-28 21:06:37

本帖最后由枫叶棋语于 2023-8-22 22:37 编辑

继上次的实验，我们初步实现了Ironpython环境加载Cpython环境，经过一番苦战，实现了在cad上运行Cpython，包括CAD注册命令，兼容Ipy脚本，本次更新实现了Cpython在CAD上运行，并依靠第三方模块开发的功能。相当于80%成品，因为本人能力有限，未能脱离借助Ironpython，直接使用c#调用Cpython，望后续有看到的兄弟助理一把。
这个是Cpython引擎
import clr
import sys
import os
clr.AddReference("Python.Runtime")
clr.AddReference("acmgd")
clr.AddReference("AcCoreMgd")
clr.AddReference("AcDbMgd")
clr.AddReference("System")

import System
import Autodesk.AutoCAD.ApplicationServices as acap
from Python.Runtime import *

dllpath = System.Reflection.Assembly.GetExecutingAssembly().Location
dlldir = os.path.dirname(dllpath)
supportdir = os.path.join(dlldir, "support")
extensionsdir = os.path.join(dlldir, "extensions")
referencedir = os.path.join(dlldir,"Reference")

class CpyEngine:
def __init__(self,pydll):
   self.pydll =pydll
   self.pyhome =os.path.dirname(pydll)
   self.pypath = "{self.pyhome}\\Lib;{self.pyhome}\\Lib\\site-packages"
   self.SetCpyEnviromnent()
   self.Initilize()
@staticmethod
def prinf(msg):
   acap.Application.DocumentManager.MdiActiveDocument.Editor.WriteMessage(f"\n{msg}\n")
def SetCpyEnviromnent(self):
   '''配置Cpython环境变量'''
   os.environ["PYTHONHOME"]=self.pyhome
   os.environ["PYTHONNET_PYDLL"] = self.pydll
   os.environ["PYTHONPATH"] = self.pypath

def Initilize(self):
   '''初始化Cpython引擎'''
   if not PythonEngine.IsInitialized:
         PythonEngine.Initialize()
   PythonEngine.PythonPath =self.pypath

def RunCpyScript(self,scriptpath):
   '''运行脚本'''
   import traceback
   self.scope = Py.CreateScope()
   pysys=Py.Import("sys")
   pysys.path.append(dlldir)
   pysys.path.append(supportdir)
   pysys.path.append(extensionsdir)
   pysys.path.append(referencedir)
   with open(scriptpath,"r",encoding="utf-8") as file:
         pythoncode= file.read()
   with Py.GIL():
         try:
            self.scope.Exec(pythoncode)
         except:
            error =traceback.format_exc()
            self.prinf(error)

import clr
clr.AddReference("System.Windows.Forms")
clr.AddReference("System.Drawing")
import System
from System.Drawing import *
from System.Windows.Forms import *
import os
from pycad.system.acad import acap, prinf
from pycad.system.CpyEngine import CpyEngine
def check_and_create_file(filename):
'''判断文件是否存在,不存在就创建空文件'''
if not os.path.exists(filename):
   open(filename, 'w')
class MainForm(Form):
def __init__(self):
   self.InitializeComponent()
   self.Resize += self.FormChanged
   self.MinimumSize = Size(500, 500)
   self.dllpath = System.Reflection.Assembly.GetExecutingAssembly().Location
   self.dlldir = os.path.dirname(self.dllpath)
   self.history = self.dlldir+"\CpyHistory.txt"
   check_and_create_file(self.history)
   self.HistoryPaths = self.ReadHitory()
   self.ImportPaths(self.HistoryPaths)
   self.engine = CpyEngine(r"D:\Program Files\Python310\python310.dll")
@staticmethod
def SetButton(button,anchor, x, y,name, text, func):
   button.Anchor =anchor
   button.Location = Point(x, y)
   button.Size = Size(75, 25)
   button.Name = name
   button.Text = text
   button.UseVisualStyleBackColor = True
   button.Click += func

@staticmethod
def AddItem(listview: ListView, lst):
   item = ListViewItem(items=tuple(lst))
   listview.Items.Add(item)

def InitializeComponent(self):
   self._Add = Button()
   self._Delete = Button()
   self._Clear = Button()
   self._Apply = Button()
   self._Cancel = Button()
   self._Reload = Button()
   self._ScriptPaths = ListView()
   self._FileName = ColumnHeader()
   self._FilePath = ColumnHeader()
   self.Size = Size(500, 550)
   self.ButtonWidth = 75
   self.ButtonHeight = 25
   self.ButtonX = 425
   self.ListViewWidth =self.ButtonX-75
   self.ListViewHeight =self.Size.Height -200

   # ScriptPaths
   self._ScriptPaths.View = View.Details
   self._ScriptPaths.Anchor = AnchorStyles.Left|AnchorStyles.Top|AnchorStyles.Bottom|AnchorStyles.Right
   self._ScriptPaths.Location = Point(30, 50)
   self._ScriptPaths.Name = "ScriptPaths"
   self._ScriptPaths.Size = Size(self.ListViewWidth,self.ListViewHeight)
   self._ScriptPaths.GridLines =True
   self._ScriptPaths.UseCompatibleStateImageBehavior = False
   self._ScriptPaths.Columns.Add("文件")
   self._ScriptPaths.Columns.Add("路径")
   self._ScriptPaths.Columns.Width= 150
   self._ScriptPaths.Columns.Width = self.ListViewWidth-150
   self._ScriptPaths.BorderStyle = BorderStyle.FixedSingle
   self._ScriptPaths.FullRowSelect =True

   self.SetButton(self._Add, AnchorStyles.Right| AnchorStyles.Top,400,70, "Add", "添加", self.AddClick)
   self.SetButton(self._Delete, AnchorStyles.Right| AnchorStyles.Top,400, 140, "Delete", "删除", self.DeleteClick)
   self.SetButton(self._Clear,AnchorStyles.Right| AnchorStyles.Top,400, 210,"Clear","清空", self.ClearClick)
   self.SetButton(self._Reload, AnchorStyles.Bottom|AnchorStyles.Right,200, 450,"Reload", "重载", self.ReloadClick)
   self.SetButton(self._Apply,AnchorStyles.Bottom|AnchorStyles.Right,300, 450,"Apply","确定", self.ApplyClick)
   self.SetButton(self._Cancel, AnchorStyles.Bottom|AnchorStyles.Right,400, 450, "Cancel","取消", self.CancelClick)

   # 窗体添加控件
   self.Controls.Add(self._ScriptPaths)
   self.Controls.Add(self._Cancel)
   self.Controls.Add(self._Apply)
   self.Controls.Add(self._Clear)
   self.Controls.Add(self._Reload)
   self.Controls.Add(self._Delete)
   self.Controls.Add(self._Add)
   self.Text = "加载CPython脚本"
   self.ResumeLayout(False)

#读取history文本内容
def ReadHitory(self):
   with open(self.history,"r",encoding="utf-8") as file:
         existing_paths = file.read().splitlines()
         return existing_paths
#读取listview内容
def ReadListView(self):
   paths = []
   for item in self._ScriptPaths.Items:
         path = item.SubItems.Text
         paths.append(path)
   return paths
#导入路径
def ImportPaths(self,paths):
   for path in paths:
         basename = os.path.basename(path)
         self.AddItem(self._ScriptPaths,)
#导出路径
def ExportPaths(self,paths):
   with open(self.history, "w") as file:
         for item in self._ScriptPaths.Items:
            path = item.SubItems.Text
            if path not in existing_paths:
               file.write(path + '\n')

def AddClick(self, sender, e):
   openFileDialog = OpenFileDialog()
   openFileDialog.Multiselect = True
   if openFileDialog.ShowDialog() == DialogResult.OK:
         self._ScriptPaths.Items.Clear()
         file_names = openFileDialog.FileNames
         result = set(file_names)|set(self.HistoryPaths)
         self.ImportPaths(result)
         self.HistoryPaths =list(result)
         for path in file_names:
            self.engine.RunCpyScript(path)

def DeleteClick(self, sender, e):
   selected_items = self._ScriptPaths.SelectedItems
   for item in selected_items:
         self._ScriptPaths.Items.Remove(item)
   self.HistoryPaths =self.ReadListView()

def ClearClick(self, sender, e):
   self._ScriptPaths.Items.Clear()
   self.HistoryPaths = []

def ApplyClick(self, sender, e):
   with open(self.history, "w") as file:
         for path in self.HistoryPaths:
            file.write(f"{path}\n")
   self.Close()

def ReloadClick(self, sender, e):
   selected_items = self._ScriptPaths.SelectedItems
   for item in selected_items:
         path = item.SubItems.Text
         self.engine.RunCpyScript(path)

def CancelClick(self, sender, e):
   self.Close()

def FormChanged(self, sender, e):
   self._ScriptPaths.Columns.Width = self.Size.Width - 200

loadform = MainForm()
acap.Application.ShowModelessDialog(loadform)
与此同时，我们建立一个CpyReload脚本，用于命令重载所有脚本命令，代码如下：
from pycad.system import prinf
from pycad.system.CpyEngine import CpyEngine
import System
import os,traceback
import re
def check_and_create_file(filename):
'''判断文件是否存在,不存在就创建空文件'''
if not os.path.exists(filename):
   open(filename, 'w')
class Reload:
def __init__(self):
   self.engine = CpyEngine(r"D:\Program Files\Python310\python310.dll")
   self.dllpath = System.Reflection.Assembly.GetExecutingAssembly().Location
   self.dlldir = os.path.dirname(self.dllpath)
   self.history = self.dlldir+"\CpyHistory.txt"
   check_and_create_file(self.history)
   self.reload()

def reload(self):
   with open(self.history,"r",encoding="utf-8") as file:
         paths = file.read().splitlines()
         for path in paths:
            self.engine.RunCpyScript(path)

Reload()至此，CpyCAD的框架的python代码基本搭设完成，由于权限问题，暂时不能上传文件。有需要的可以联系。

枫叶棋语 发表于 2023-7-29 10:46:14

本帖最后由枫叶棋语于 2023-8-22 21:23 编辑

同样我们可以调用python的opencv，scipy，matplot，这里就不一一展示，到这一步，我们就基本完成了cpython 开发CAD方法，同时避免了com方式
向CAD中添加图元

from pycad.system import *
from pycad.runtime import *
from typing import *


@Command()
def addline(doc):
pt1 = getpoint().value
pt2 = getpoint().value
line = Line(pt1,pt2)
with dbtrans(doc) as tr:
   tr.addentity(tr.btr,line)

@Command()
def addcircle(doc):
center = getpoint().value
radius = getreal().value
cir = Circle()
cir.Center ,cir.Radius =center,radius
with dbtrans(doc) as tr:
   tr.addentity(tr.btr,cir)
import numpy as np
@Command()
def testnp(doc):
lst = np.array()
prinf(f"numpy数组{lst}")

枫叶棋语 发表于 2023-7-29 21:41:13

枫叶棋语发表于 2023-7-29 00:47
这里面还是有一些问题需要处理，这个只是一个开始

我的pycad使用Ironpython3.4，除了c#构造一个简单的环境加载，其余所有功能全部由py代码构成，注册命令方式也不一样，目前方向往Cpython进行拓展

caoliu023 发表于 2023-7-28 22:06:43

如果能用py第三方库，那就有有很多想象空间了，就看有没有人发掘出潜力让我涨涨知识，还有个期待是希望有人能把Javascript API重新带回cad

桌子好像是放弃Javascript API了

[飞马系列] AutoCAD 2014 之Javascript API编程初探
http://bbs.mjtd.com/forum.php?mod=viewthread&tid=108034&fromuid=287566
(出处: 明经CAD社区)

zlf2008 发表于 2023-7-28 22:06:22

谢谢分享！认真学习，想自己搞一个自己熟悉的常用的工具

枫叶棋语 发表于 2023-7-29 00:47:31

caoliu023 发表于 2023-7-28 22:06
如果能用py第三方库，那就有有很多想象空间了，就看有没有人发掘出潜力让我涨涨知识，还有个期待是希望有人 ...

这里面还是有一些问题需要处理，这个只是一个开始

edata 发表于 2023-7-29 15:46:02

不知道和版主的pycad有什么区别http://bbs.mjtd.com/thread-180587-1-1.html

陨落发表于 2023-7-30 10:42:50

edata 发表于 2023-7-29 15:46
不知道和版主的pycad有什么区别http://bbs.mjtd.com/thread-180587-1-1.html

我还以为就是基于版主的pycad呢？如果不是，那枫总一开始所有能嵌入cad的ironpython是从哪来的呢？难道是自己用C#写了个dll，通过c#传递参数给ironpython并调用他？

枫叶棋语 发表于 2023-7-30 18:44:31

陨落发表于 2023-7-30 10:42
我还以为就是基于版主的pycad呢？如果不是，那枫总一开始所有能嵌入cad的ironpython是从哪来的呢？难道是 ...

c#写了一个dll，实现cad能够加载运行第一个py脚本，其他功能全部用py脚本实现，相当于99%的Ironpython

caoliu023 发表于 2023-8-22 21:38:04

楼主也可以发网盘链接，发个百度网盘永久的链接

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【pycad】让Cpython在CAD中开发