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blockRemoveObj.py
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import rhinoscriptsyntax as rs
import scriptcontext as sc
import Rhino
def RemoveFromBlock():
block = rs.GetObject("Select Block to extract objects from", rs.filter.instance, preselect=True)
if not block: return
blockName = rs.BlockInstanceName(block)
objref = rs.coercerhinoobject(block)
idef = objref.InstanceDefinition
idefIndex = idef.Index
XformBlock = rs.BlockInstanceXform(block)
blockObjects = rs.BlockObjects(blockName)
blockInstanceObjects = rs.TransformObjects(blockObjects, XformBlock, True)
objs = rs.GetObjects("Select Objects to extract from Block", objects =blockInstanceObjects)
if not objs:
rs.DeleteObjects(blockInstanceObjects)
return
keep = [] #List to keep in block
delete = [] #list to delete from block and add to doc
rs.EnableRedraw(False)
for object in blockInstanceObjects:
if object in objs: delete.append(object)
else: keep.append(object)
if rs.IsBlockReference(blockName):
print "Block is referenced from file; unable to modify block"
rs.DeleteObjects(keep)
return
rs.TransformObjects(keep, rs.XformInverse(XformBlock), False)
newGeometry = []
newAttributes = []
for object in keep:
newGeometry.append(rs.coercegeometry(object))
ref = Rhino.DocObjects.ObjRef(object)
attr = ref.Object().Attributes
newAttributes.append(attr)
InstanceDefinitionTable = sc.doc.ActiveDoc.InstanceDefinitions
InstanceDefinitionTable.ModifyGeometry(idefIndex, newGeometry, newAttributes)
rs.DeleteObjects(keep)
rs.EnableRedraw(True)
RemoveFromBlock()