Trying to delete selected layers from blocks s

Karim_tabbara · January 15, 2024, 8:50pm

Is anyone still here ?
Trying to delete selected layers from blocks in PY

rs.DeleteObject(Guid)
Won’t work

DeleteLayerFromBlock_notworking.py (2.3 KB)

dale · January 17, 2024, 1:34am

Moved to a new topic…

Karim_tabbara · January 17, 2024, 9:53am

Dear Dale

I Can’t manage to find this new topic

dale · January 17, 2024, 4:07pm

@Karim_tabbara - you should see this link jist above:

Add Object to Block Python (bypass block edit)

Not sure this is what you’re after, but I’ve attached a simple “merge layer” sample for you to review.

MergeLayers.py (2.7 KB)

– Dale

Karim_tabbara · January 17, 2024, 4:27pm

Dear Dale

Yes I have used [quote=“Dale Fugier, post:4, topic:173505, username:dale”]
MergeLayers.py (2.7 KB)
Even modified it so it can handle merging layers in blocks
MergeLayersAndBlockLayers_v01.py (2.4 KB)

But found no way to delete objects from blocks, even re-using code in following scripts
Not good enough in PY

My code doesn’t work

rs.DeleteObject does nothing

I guess (kind of understood) I have to rebuild the block with it’s elements removing the elements to be deleted…

if V_BlockNames :
for V_BlockName in V_BlockNames :
# Get Ids in block
V_Ids = rs.BlockObjects(V_BlockName)
# Parse Ids in block
for V_Id in V_Ids :
# Get Object
V_Object = doc.Objects.Find(V_Id)
# Get object attributes
V_attributes = V_Object.Attributes
# Get object layer Index
V_Layer_index = V_attributes.LayerIndex
# Check entitie layer has to be changed
if V_Layer_index in sources:
# Delete Object
rs.DeleteObject(V_Object)
pass

dale · January 17, 2024, 4:52pm

Hi @Karim_tabbara,

The proper way to delete (or redefine) an existing instance definition is to use one of the InstanceDefinitionTable.ModifyGeometry methods.

github.com

mcneel/rhino-developer-samples/blob/6/rhinopython/SampleModifyInstanceDef.py

################################################################################
# SampleModifyInstanceDef.py
# Copyright (c) 2017 Robert McNeel & Associates.
# See License.md in the root of this repository for details.
################################################################################
import Rhino
import scriptcontext as sc

# Demonstates how to modify an instance definition's objects
def SampleModifyInstanceDef():
    
    # Get the name of the instance definition to modify
    idef_name = ''
    rc, idef_name = Rhino.Input.RhinoGet.GetString("Name of block to modify", False, idef_name)
    if rc != Rhino.Commands.Result.Success: 
        return
    
    # Find the instance definition
    idef = sc.doc.InstanceDefinitions.Find(idef_name)
    if idef is None:

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– Dale

Karim_tabbara · January 17, 2024, 6:07pm

Thanks Dale
I’ll “compute” all that in my little brain.