How to insert a DynBlock?

[royccg]

Thanks at all.
I want to select a dynamic block and insert this block. But after appendAcDbEntity, the object is not dynamic Block.

@command
def test_insert_block():
    try:
        filter = [(Db.DxfCode.kDxfStart, "INSERT")]  # BlockReference 的 DXF 名是 "INSERT"
        print("select block:") 
        ss_result = Ed.Editor.ssget(":S", None, None, filter)
        if ss_result[0] != Ed.PromptStatus.eNormal:
            return
        print(f"ss id: {ss_result[1].toList()[0]}")
        blockRef_old = Db.BlockReference(ss_result[1].toList()[0])
        # if blockRef_old.isDy
        print(f"Block id: {blockRef_old.id()}")
    except Exception as err:
         print(err)

    btr = Db.BlockTableRecord(blockRef_old.blockTableRecord())

    if btr.name().startswith("*") or btr.name().endswith("A$"):
        # 匿名块
        btr = Db.BlockTableRecord(Db.DynBlockReference(blockRef_old.id()).dynamicBlockTableRecord(), Db.OpenMode.kForRead)
        print(f"btr pro: {btr.isDynamicBlock()}")

    print(f"btr is dynamicBlock: {btr.isDynamicBlock()}")
    # 插入点
    ptres = Ed.Editor.getPoint("\nSpecify insertion point: ")
    if(ptres[0] != Ed.PromptStatus.eOk):
        print("Oops!: ", ptres[0])
        return

    newBlkRef = Db.BlockReference(ptres[1], btr.id())
    lock = Ap.AutoDocLock()
    db = get_current_model_database()

    try:
        ref_id = db.addToCurrentspace(newBlkRef)
        print(f"ref id: {ref_id}")
        print(f"newB: {newBlkRef.id()}")
 

        dynRef = Db.DynBlockReference(ref_id)
        if not dynRef.isDynamicBlock():
            print("not a dynamic block")
            return

        props = dynRef.getBlockProperties()
        for prop in props:
            print(f"prop: {prop.propertyName()}")

    except Exception as err:
        traceback.print_exception(f"err:{err}")

[CEXT-Dan]

maybe something like this, there's a sample drawing in PySamples\dwg\dynamicBlock.dwg

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

@Ap.Command()
def doit():
    try:
        db = Db.curDb()
        ps, id, _ = Ed.Editor.entSel("\nPick a block", Db.BlockReference.desc())
        if ps != Ed.PromptStatus.eOk:
            raise RuntimeError("Selection Error! {}: ".format(ps))

        dynref = Db.DynBlockReference(id)
        if not dynref.isDynamicBlock():
            print("oof")
            return
        
        newref = Db.BlockReference(Ge.Point3d(0, 0, 0),dynref.dynamicBlockTableRecord())
        newrefid = db.addToModelspace(newref)

    except Exception as err:
        traceback.print_exception(err)

[royccg]

Return is “False”

[royccg]

I want to insert a new dynamicBlock that is seleted, and change the block's properties. But when i insert the new block, that always display blocks that are not dynamic.
I'm confused.

[CEXT-Dan]

Hi, try this code on the screw block

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


@Ap.Command()
def doit():
    try:
        db = Db.curDb()
        ps, id, _ = Ed.Editor.entSel("\nPick a block", Db.BlockReference.desc())
        if ps != Ed.PromptStatus.eOk:
            raise RuntimeError("Selection Error! {}: ".format(ps))

        #check if it's dynamic
        dynref = Db.DynBlockReference(id)
        if not dynref.isDynamicBlock():
            print("oof")
            return
        
        #this should return the effective name
        ref = Db.BlockReference(id)
        print("\n{}".format(ref.getBlockName()))
        
        #better to put this in its own function for a GC scope and remove the close()
        newref = Db.BlockReference(Ge.Point3d(2229, 1390, 0),dynref.dynamicBlockTableRecord())
        newref.setScaleFactors(Ge.Scale3d(25.4))
        newrefid = db.addToModelspace(newref)
        newref.close()
        
        # create a new DynBlockReference from the new reference 
        # and set the properties 
        newdynref = Db.DynBlockReference(newrefid)
        props = newdynref.getBlockProperties()
        for prop in props:
            if prop.propertyName() == 'Distance':
                prop.setValue(Db.EvalVariant(50.08))
            if prop.propertyName() == 'Distance1':
                prop.setValue(Db.EvalVariant(48.8156))
   
    except Exception as err:
        traceback.print_exception(err)

[royccg]

newref.close()

the step is key! Thanks a lot! Amazing.

[royccg]

This code should be added in pysamples.

[CEXT-Dan]

I added it in PySamples\PyDb\dynamicBlock.py

As a side note, whenever I encounter a situation where I have to call close, or downgradeOpen, etc. I try to move that section of code to its own function and return the object’s objectId. This way Python’s garbage collection can close the objects and release the references.