Using PyAutoCAD with PyRx

 

You can use your existing PyAutoCAD code inside PyRx with a few small changes. 

1, PyAutoCAD has it’s own main and is run out of process, where as with PyRx, the Python interpreter is running inside the ARX module, in AutoCAD, so it’s inside the process. As a result your PyAutoCAD code should run an order of magnitude faster!

2, Since there’s no main, you must execute your code in a command context, E.g. define a command, then run the command from inside AutoCAD

That’s it! This example shows how to run the example posted on PyAutoCAD PyPi page, followed up by an example in PyRx

 

import PyRx as Rx

import PyGe as Ge

import PyGi as Gi

import PyDb as Db

import PyAp as Ap

import PyEd as Ed

import traceback

from pyautocad import Autocad, APoint

# pyautoacad from a command context

def PyRxCmd_pyautoacad():

    try:

        acad = Autocad()

        # acad.prompt has an issue because the code calls print

        # and prompt so it shows on the command line twice,

        # stdio is redirected to to command line with PyRx

        # so just use print

        acad.prompt("Hello, Autocad from Python")

        print(acad.doc.Name)

        #COM API

        p1 = APoint(0, 0)

        p2 = APoint(50, 25)

 

        for i in range(5):

            text = acad.model.AddText('Hi %s!' % i, p1, 2.5)

            acad.model.AddLine(p1, p2)

            acad.model.AddCircle(p1, 10)

            p1.y += 10

    except Exception as err:

        traceback.print_exception(err)

# define pyrx command

def PyRxCmd_pyrx():

    try:

        # calls acutPrintf

        print("Hello, Autocad from Python\n")

        print(Ap.curDoc().docTitle())

        # get the working database and open model space for write

        db = Db.HostApplicationServices().workingDatabase()

        model = Db.BlockTableRecord(db.modelSpaceId(), Db.OpenMode.kForWrite)

        p1 = Ge.Point3d(0, 0, 0)

        p2 = Ge.Point3d(50, 25, 0)

        # move to the right so we don't overlap pyautoacad

        p1 += (Ge.Vector3d.kXAxis * 100)

        p2 += (Ge.Vector3d.kXAxis * 100)

        for i in range(5):

         

            # create a MText object and add it to the database

            mt = Db.MText()

            mt.setDatabaseDefaults()

            mt.setLocation(p1)

            mt.setContents('PyHi %s!' % i)

            mt.setTextHeight(2.5)

            model.appendAcDbEntity(mt)

           

            # create a line and add it to the database

            line = Db.Line(p1, p2)

            model.appendAcDbEntity(line)

            # create a circle and add it to the database

            circle = Db.Circle(p1, Ge.Vector3d.kZAxis, 10)

            model.appendAcDbEntity(circle)

            p1.y += 10

    except Exception as err:

        traceback.print_exception(err)