Merge Polygon Objects

Helper

THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

On 09/03/2011 at 04:42, xxxxxxxx wrote:

User Information:
Cinema 4D Version:
Platform:
Language(s) :   C.O.F.F.E.E ; C++ ;   PYTHON ;

---------
Hi there,

I post this in the SDK Help Subforum, because I am sure, if someone knows a way to solve my Problem in C++ I can transfer it to Python.

What I want is to merge 2 Polygonobjects into one. If you know how to do it, you actually don't need to understand my Code.
If not, I hope C++'ers can understand it.

It actually works, but some points are connected with the the other objects.
And theire axes are resetted , but I know how to fix this, and I will do this later.

def SetAllPoints(op,points) :  
  if op is None: return False  
  if points is None: return False  
  
  cnt = op.GetPointCount()  
  
  for i in xrange(cnt) :  
      op.SetPoint(i,points[i])  
  op.Message(c4d.MSG_UPDATE)  
  
def SetAllPolygons(op,polys) :  
  if op is None: return False  
  if polys is None: return False  
  
  cnt = op.GetPolygonCount()  
  
  for i in xrange(cnt) :  
      op.SetPolygon(i,polys[i])  
  op.Message(c4d.MSG_UPDATE)  
  
def MakeEditable(op) :  
  if (not op) : return  
  if (op.CheckType(c4d.Opolygon) == True) : return op  
  
  op = [op.GetClone()]  
  doc = c4d.documents.BaseDocument()  
  doc.InsertObject(op[0],None,None)  
  op = c4d.utils.SendModelingCommand(  
                            command = c4d.MCOMMAND_MAKEEDITABLE,  
                            list = op,  
                            doc = doc )  
  return op[0]  
  
def MergeLists(lst1,lst2) :  
  for line in lst2:  
      lst1.append(line)  
  return lst1  
  
def MergePolygonObjects(obj1,obj2) :  
  op = c4d.BaseObject(c4d.Opolygon)  
  obj1 = MakeEditable(obj1)  
  obj2 = MakeEditable(obj2)  
  op.ResizeObject(obj1.GetPointCount()+obj2.GetPointCount(),obj1.GetPolygonCount()+obj2.GetPolygonCount())  
  SetAllPoints(op,MergeLists(obj1.GetAllPoints(),obj2.GetAllPoints()))  
  SetAllPolygons(op,MergeLists(obj1.GetAllPolygons(),obj2.GetAllPolygons()))  
  return op

Thanks in Advance, nux

Helper

THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

On 09/03/2011 at 05:03, xxxxxxxx wrote:

hi there,
you have to remap the vertex-indices of the second polygonobject. Adding an offset obj1.GetPointCount() to each vertex index in the polygon array of the second one should do it.
greetz

Helper

THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

On 09/03/2011 at 08:12, xxxxxxxx wrote:

You could use SendModelingCommand(MCOMMAND_JOIN, ...). The only caveat is that you will need to put the editable objects under a Null object and pass the Null object in with the ModelingCommandData. Best to make clones to work with.

Helper

THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

On 09/03/2011 at 09:03, xxxxxxxx wrote:

Thanks, that should work. Haha, didn't think about this !

Still got some problems, postet in the Python Subforum.
https://developers.maxon.net/forum/topic/5572/5593_mcommandjoin

Cheers, nux