Responsive mleader (with field info)

[schoeller]

Thanks for PyRx.
I would like to experiment further with new field evaluator. In order to do that I was asking myself how to create a responsive mleader in the first place.

From a user perspective I would like to be able to execute a command, then pick a point on a filtered entity and an mleader is created with info related to the entity and the point picked.

Stage 1#

Later I would like to edit the entity and the mleader should move accordingly and update the field information within.

Stage 2#

When carrying out any edit/erase operations on the mleader everything else should stay intact.

Stage 3#

Of course when closing/opening the file all functionality should likewise stay in working order. It might be a lot of example to ask, but currently its too distant for me.

[CEXT-Dan]

I added a sample to make an associated leader, I had to make some adjustments for BricsCAD, so it should work next build
I’m surprised there’s no built-in field for mleader positions. You can make one, though consider that your evaluator must be loaded for your custom field to update.

Bricsys and I have very different opinions with regards to fields, I think they are amazing, they don’t feel the need to put in the effort into finishing the API. I have written many evaluators for AutoCAD, SQLField, ExcelField. I think the properties one I posted is super useful. There should be enough API wise for you to create one though

[schoeller]

Thanks for sharing. Will take a look. Had been using BIM tags once. It is a little hidden (Extensions -> Object 2D Mleader):

They there provide functionality which sounds similar to what I take from your writing above.

P.S.:
Concerning differences: the problem with world domination seems to be human species and its inherent miscellaneousness. For me It starts out in relation to my offspring ;-)

[schoeller]

When doing as such:

def makeLeaderField(db: Db.Database):
    # https://forum.bricsys.com/discussion/33686/net-how-to-insert-a-field-into-a-mtext

    # create field and Mtext
    fld = Db.Field(
        "%<\AcVar Filename>%"
    )
    fld.evaluate()
    mt = Db.MText()
    mtId = db.addToCurrentspace(mt)
    mt.setField(fld)

    leader = Db.MLeader()
    leader.setDatabaseDefaults()
    leader.setContentType(Db.MLeaderContentType.kMTextContent)
    leader.setMText(mt)

    idx = leader.addLeaderLine(Ge.Point3d(100, 100, 0))
    leader.addFirstVertex(idx, Ge.Point3d(50, 0, 0))
    return db.addToModelspace(leader)

def makeLine(db: Db.Database):
    line = Db.Line(Ge.Point3d(0, 0, 0), Ge.Point3d(100, 0, 0))
    return db.addToModelspace(line)

@Ap.Command()
def assocleader() -> None:
    try:

        db = Db.curDb()
        lid = makeLeaderField(db)
        lineid = makeLine(db)

        oref = Db.OsnapPointRef(Ge.Point3d(50, 0, 0))
        oref.setOsnapType(Db.OsnapType.kOsnapMid)
        oref.setIdPath(lineid, Db.SubentType.kEdgeSubentType, 0)

        dimAssoc = Db.DimAssoc()
        dimAssoc.setDimObjId(lid)
        dimAssoc.setPointRef(Db.DimAssocPointType.kLeaderPoint, oref)
        dimAssoc.post(lid)

    except Exception as err:
        traceback.print_exception(err)

I receive an mtext with a field, but the mleader with text only.

Hints appreciated.

[CEXT-Dan]

looks like a bug in BricsCAD

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


def makeTempMtext(db: Db.Database):
    fld = Db.Field("%<\\AcVar Filename>%")
    mt = Db.MText()
    mtId = db.addToCurrentspace(mt)
    mt.setField(fld)
    mt.setLocation(Ge.Point3d(50, 100, 0))
    fld.evaluate()
    return mtId


def makeLeaderField(db: Db.Database):
    # https://forum.bricsys.com/discussion/33686/net-how-to-insert-a-field-into-a-mtext

    # create field and Mtext
    mtid = makeTempMtext(db)
    mt = Db.MText(mtid, Db.OpenMode.kForWrite)
    leader = Db.MLeader()
    leader.setDatabaseDefaults()
    leader.setContentType(Db.MLeaderContentType.kMTextContent)
    leader.setMText(mt)
    idx = leader.addLeaderLine(Ge.Point3d(100, 100, 0))
    leader.addFirstVertex(idx, Ge.Point3d(50, 0, 0))

    # erase the temp
    mt.erase()

    return db.addToModelspace(leader)


def makeLine(db: Db.Database):
    line = Db.Line(Ge.Point3d(0, 0, 0), Ge.Point3d(100, 0, 0))
    return db.addToModelspace(line)


@Ap.Command()
def doit() -> None:
    try:

        db = Db.curDb()
        lid = makeLeaderField(db)
        lineid = makeLine(db)

        oref = Db.OsnapPointRef(Ge.Point3d(50, 0, 0))
        oref.setOsnapType(Db.OsnapType.kOsnapMid)
        oref.setIdPath(lineid, Db.SubentType.kEdgeSubentType, 0)

        dimAssoc = Db.DimAssoc()
        dimAssoc.setDimObjId(lid)
        dimAssoc.setPointRef(Db.DimAssocPointType.kLeaderPoint, oref)
        dimAssoc.post(lid)

    except Exception as err:
        traceback.print_exception(err)

[CEXT-Dan]

added (SR 200467)

[CEXT-Dan]

instead of a MLeader, a normal leader seems to work

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


def makeTempMtext(db: Db.Database):
    fld = Db.Field("%<\\AcVar Filename>%")
    mt = Db.MText()
    mtId = db.addToCurrentspace(mt)
    mt.setField(fld)
    mt.setLocation(Ge.Point3d(100, 100, 0))
    fld.evaluate()
    return mtId


def makeLeaderField(db: Db.Database):
    mtid = makeTempMtext(db)
    leader = Db.Leader()
    lid = db.addToModelspace(leader)
    leader.appendVertex(Ge.Point3d(50, 0, 0))
    leader.appendVertex(Ge.Point3d(100, 100, 0))
    leader.attachAnnotation(mtid)
    return lid


def makeLine(db: Db.Database):
    line = Db.Line(Ge.Point3d(0, 0, 0), Ge.Point3d(100, 0, 0))
    return db.addToModelspace(line)


@Ap.Command()
def doit() -> None:
    try:

        db = Db.curDb()
        lid = makeLeaderField(db)
        lineid = makeLine(db)

        oref = Db.OsnapPointRef(Ge.Point3d(50, 0, 0))
        oref.setOsnapType(Db.OsnapType.kOsnapMid)
        oref.setIdPath(lineid, Db.SubentType.kEdgeSubentType, 0)

        dimAssoc = Db.DimAssoc()
        dimAssoc.setDimObjId(lid)
        dimAssoc.setPointRef(Db.DimAssocPointType.kLeaderPoint, oref)
        dimAssoc.post(lid)

    except Exception as err:
        traceback.print_exception(err)