Access custom entity content

[schoeller]

Dear all,

thanks for this open source. I am an infrequent scripter accustomed to some python. I have understood that this project aims to make python available from within a CAD environment. I would like to extend my horizon accessing entities custom to Bricscad (TIN, alignment etc.). I have taken testRxPyDebug.py and modified. So I set up an environment whereby I run pystartdebug from Bricscad and run

def PyRxCmd_doit2():
    db = Db.curDb()

    entSelRes = Ed.Editor.entSel("\nPick it")

    print(entSelRes)

I then select a custom entity (TIN entity in this case). When analyzing the locales from the variables output in VS code I can see

I am wondering as how to access the entity information. If somebody could pinpoint how to access and handle information from this custom entity that would help. Attached is a sample file.

Best regards

Sebastian

BCAD_civil.zip

[CEXT-Dan]

Hi sorry, unfortunately, it’s currently not possible as I have not created wrappers for any verticals or custom objects there was a fork of this project, with the intention of doing exactly this, but it appears to be frozen https://github.com/SioulisChris

I’m not against having BRX specific entities in this project, but I have not thought through it yet. In general wrappers are not hard for me to write, I just don’t know how to use any civil features, so testing could be an issue

def PyRxCmd_doit() -> None:
    try:
        db = Db.curDb()
        entSelRes = Ed.Editor.entSel("\nPick it")
        if entSelRes[0] != Ed.PromptStatus.eOk:
            print("Oops {}: ".format(entSelRes[0]))
            return

        # same as (entget(car(entsel)))
        print(Db.Core.entGet(entSelRes[1]))

    except Exception as err:
        traceback.print_exception(err)

def PyRxCmd_doit2() -> None:
    try:
        db = Db.curDb()
        entSelRes = Ed.Editor.entSel("\nPick it")
        if entSelRes[0] != Ed.PromptStatus.eOk:
            print("Oops {}: ".format(entSelRes[0]))
            return

        # this is the filer from the entity
        # generaly its too hard to read and it's read only
        snoop = Db.SnoopDwgFiler()
        ent = Db.Entity(entSelRes[1])
        ent.snoop(snoop)
        print(snoop.buffer())

    except Exception as err:
        traceback.print_exception(err)

[CEXT-Dan]

I’ve decided to go ahead give this a try. I was able to add CvDbObject, CvDbEntity and CvDbCurve without issues. Hopefully I won't run into any .. Proof of concept, I’ll publish a release when I have something useful. Note, I’m not familiar with the API or Civil

import traceback
from pyrx_imp import Rx
from pyrx_imp import Ge
from pyrx_imp import Gi
from pyrx_imp import Gs
from pyrx_imp import Db
from pyrx_imp import Ap
from pyrx_imp import Ed

from pyrx_imp import Cv

# debug
def PyRxCmd_pydebug() -> None:
    import PyRxDebug
    PyRxDebug.startListener()

def PyRxCmd_doit() -> None:
    try:
        db = Db.curDb()
        entSelRes = Ed.Editor.entSel("\nPick it: ")
        if entSelRes[0] != Ed.PromptStatus.eOk:
            print("Oops {}: ".format(entSelRes[0]))
            return

        id : Db.ObjectId = entSelRes[1]
        if id.isDerivedFrom(Cv.CvDbObject.desc()):
            print("CvDbObject")
            obj = Cv.CvDbObject(id)
            print(obj.name())
            print(obj.description())
        elif id.isDerivedFrom(Cv.CvDbEntity.desc()):
            print("CvDbEntity")
            ent = Cv.CvDbEntity(id)
            print(ent.name())
            print(ent.description())
        elif id.isDerivedFrom(Cv.CvDbCurve.desc()):
            print("CvDbCurve")
            curve = Cv.CvDbCurve(id, Db.OpenMode.kForWrite)
            print(curve.name())
            curve.setDescription("Yahoo Mountain dew")
            print(curve.description())
        else:
            print("oops")

    except Exception as err:
        traceback.print_exception(err)

[CEXT-Dan]

Marking this a closed since it's been added. though there is still work to do

[schoeller]

@CEXT-Dan : I don't know what I am doing, but I am amazed by the magic. Thanks for your work. When scripting in my spare time, should I be posting on theswamp.org or forum.bricsys.com? To me Python + CAD is really spot on, since I'll never learn the LISP syntax. It makes absolute sense to tap onto the multitude of existing Python magic.

[CEXT-Dan]

It’s my pleasure! It started off just as a programing challenge, just to see if I could do it.
I’ll never go back to using lisp again lol. Enjoy!

“should I be posting on theswamp.org or forum.bricsys.com” Bug stuff, missing functions, definitely here, so I can track them. General discussion on the API.. well, it doesn’t matter. It’s a small audience here, where the forums might get answers from more knowledgeable people than me.

Basically, I’m just copy pasting the ARX headers : )

[schoeller]

Am trying to disclose new terrains (to me): When defining an Gi.DrawableOverrule for Cv.CvDbVAlignmentView as such:

#create an overrule     
class AViewDrawOverrule(Gi.DrawableOverrule):
    def __init__(self) -> None:
        Gi.DrawableOverrule.__init__(self)

    # override
    def isApplicable(self, subject) -> bool:
        dbo = Db.Entity.cast(subject)
        return dbo.ownerId() == Db.workingDb().modelSpaceId()

    # override or vpdraw
    def worldDraw(self, subject, wd) -> bool:
        try:
            # draw the subject first
            flag = self.baseWorldDraw(subject, wd)

            #cast
            aview = Cv.CvDbVAlignmentView.cast(subject)
            geo = wd.geometry()
            traits = wd.subEntityTraits()
            traits.setColor(1)

            #do something
            print("VScale="+str(aview.verticalScale()))
            print("HScale="+str(aview.horizontalScale()))
            print("X="+str(aview.origin().x))
            print("Y="+str(aview.origin().y))
            print("Base="+str(aview.baseElevation()))
            print("Name="+aview.name())
            print("Description="+aview.description())
            print("Height="+str(aview.height()))
            print(aview.baseHAlignment())
            for item in aview.getStretchPoints():
                print(item)
            print("Number of graphs contained= " + str(aview.graphCount()))

        except Exception as err:
            traceback.print_exception(err)
        finally:
            return flag

I get

    for item in aview.getStretchPoints():
                ^^^^^^^^^^^^^^^^^^^^^^^^
RuntimeError: 
Exception!(eNotImplementedYet) in function getStretchPoints, Line 523, File PyDbEntity.cpp: 

Same counts for

    for item in valign.getPVIsArrays():
                ^^^^^^^^^^^^^^^^^^^^^^
RuntimeError: 
Exception!(eInvalidOpenState) in function getPVIsArrays, Line 2435, File PyBrxCvDbAlignments.cpp: 

It's all way above my head, but has me moving (maybe one day this becomes a foundation and I may financially contribute for simple civil application development sigh)

[CEXT-Dan]

Hi, CvDbVAlignment::getPVIsArrays is definitely my bug I have fixed it and added a test, so it will be in the next release.

CvDbVAlignmentView.getStretchPoints is not implemented by Bricsys.

There are two overloads for getGripPoints in BRX, I see one is not implemented by Bricsys, the other I have not implemented because it uses the more complex AcDbGripData class. I will add partial support for AcDbGripData, hopefully enough to collect the geometry

[CEXT-Dan]

I've added an overload for getGripPoints, this can be useful for getting geometry in overrules

def PyRxCmd_doit() -> None:
    try:
        entSelRes = Ed.Editor.entSel("\nPick it: ", Db.Entity.desc())
        if entSelRes[0] != Ed.PromptStatus.eOk:
            print("Oops {}: ".format(entSelRes[0]))
            return

        entity = Db.Entity(entSelRes[1])
        for item in entity.getGripPoints(1.0,1,Ge.Vector3d.kZAxis,0):
            print(item.gripPoint())

    except Exception as err:
        traceback.print_exception(err)

I'll make a new build this afternoon

[schoeller]

out of curiosity and due to not being able to do it myself I was wondering whether it would be possible to access / recreate the properties 1#/2# and entity 3# as per subsequent illustration using PyRx access to BRX. If you fancy experimenting please find the containing sample file attached.

refLabels.zip

[CEXT-Dan]

There may be some possibilities. Ideally you should file a support request for how to do this, and if it’s not implemented, they should add it.

There’s a snooper class you can use, it’s very tedious, cryptic, and read only, but it’s a good way to investigate deep down into objects. You will have to search for the patterns.

import traceback
from pyrx_imp import Rx, Ge, Gi, Db, Ap, Ed

def topsnoop(id):
    alldata = []
    sn = Db.SnoopDwgFiler(Db.FilerType.kCopyFiler)
    obj = Db.DbObject(id)
    obj.snoop(sn)
    alldata.extend(sn.buffer())
    for item in sn:
        if item[0] == "AcDbHardPointerId":
            subsnoop(item[1], alldata)
    return alldata

def subsnoop(id: Db.ObjectId, alldata):
    if not id.isValid():
        return
    nsnoop = Db.SnoopDwgFiler(Db.FilerType.kCopyFiler)
    obj = Db.DbObject(id)
    obj.snoop(nsnoop)
    alldata.extend(nsnoop.buffer())

def PyRxCmd_doit():
    try:
        es = Ed.Editor.entSel("\nSelect")
        alldata = topsnoop(es[1])
        for data in alldata:
            if (data[0] == "ACHAR*"
                and data[1].startswith("<[")
                and data[1].endswith("]>")):
                    print(data[1])
    except Exception as err:
        traceback.print_exception(err)

: DOIT Select<[PointElevation(Um|P2|RN|AP|GS|UN|SN|OF)]>\P<[PointNumber]>\P<[PointFullDescription(CP)]>\P<[RefVAlignment.VAlignmentName(CP)]> : DOIT Select<[PointElevation(Um|P2|RN|AP|GS|UN|SN|OF)]>\P<[PointNumber]>\P<[PointFullDescription(CP)]>\P<[RefHAlignment.AlignmentStationValue(Um|FS|P-1|RN|AP|SN|TP|B3|EY|W0|OF)]>

[schoeller]

Have posted a request under SR-175732 for creating a style from scratch attached to BrxCvDbPointLabelStyleManager.

[schoeller]

Thanks for the work. While turning over my garden compost this morning I was thinking that it'be be handsome to be able to script section entities. Thus one could model a linear solid (for example using an alignment+corridors or arrays+paths) and then generate sections along (cross-sections). Out of curiosity, is it possible to generate sections (ideally section entities usable by the BIM project browser in BCAD) as of now or would this be another custom entity?

[CEXT-Dan]

I haven’t done a whole lot of work on solids, so the wrappers are not 100% complete yet. I had intended to wrap Brep to get access to solid edges and stuff. I’ll probably start on that after I get the stubs and docstrings caught up

I’m not familiar with the any of the BIM stuff in BricsCAD, I know some of that stuff is in BRX I still need to take a look at

[schoeller]

I haven’t done a whole lot of work on solids, so the wrappers are not 100% complete yet. I had intended to wrap Brep to get access to solid edges and stuff. I’ll probably start on that after I get the stubs and docstrings caught up

I’m not familiar with the any of the BIM stuff in BricsCAD, I know some of that stuff is in BRX I still need to take a look at

Thanks for taking the time to answer.

[schoeller]

I haven’t done a whole lot of work on solids, so the wrappers are not 100% complete yet. I had intended to wrap Brep to get access to solid edges and stuff. I’ll probably start on that after I get the stubs and docstrings caught up

I’m not familiar with the any of the BIM stuff in BricsCAD, I know some of that stuff is in BRX I still need to take a look at

@CEXT-Dan hope you're well. Could use functionality to import 1) IFC, 2) classify entities (for example by layer name) and 3) export to IFC. I believe it's all BCAD verticals. I am aware that there may be other priorities. Whenever you find the time I would be grateful to be able to script anything.

1) https://help.bricsys.com/en-us/document/command-reference/i/import-command?version=V24&id=165079082118 2) https://help.bricsys.com/en-us/document/bricscad-bim/building-data/bim-classify?version=V24&id=165079158884 3) https://help.bricsys.com/en-us/document/command-reference/i/ifcexport-command?version=V24&id=165079081611

Have in mind that you're about to travel for longer. Wish you safe journey.

[CEXT-Dan]

Ok, I’ll investigate Brx Bim before starting on Brep. I’m not sure I can get it done before I leave, but I’ll give it a shot