Pressing Set button in Hair Constraint Tag

Helper

On 30/08/2017 at 12:16, xxxxxxxx wrote:

Hello! I'm trying to make a script that generates two nulls for a spline and attaches spline's first and last point to those nulls.

In this topic Andreas tells to use CallButton() function, but I can't get this script to work.
https://developers.maxon.net/forum/topic/9445/12661_clicking-set-button-of-constraint-tag-from-pygen

The script is for Script Manager. You have to select spline object first and then run the script.

  
import c4d  
  
def main() :  
  doc = c4d.documents.GetActiveDocument()  
  selo = doc.GetActiveObjects(0)  
  if len(selo) > 0:  
      for o in selo:  
              select_points = o.GetPointS()  
              pc = len(o.GetAllPoints())  
              select_points.DeselectAll()  
              select_points.Select(0)  
                
              nulla = c4d.BaseObject(c4d.Onull)  
              if nulla is None:  
                  return  
              nulla[c4d.NULLOBJECT_DISPLAY] = 2  
              nulla.SetAbsPos(c4d.Vector(o.GetPoint(0)[0],o.GetPoint(0)[1],o.GetPoint(0)[2]))  
              nulla.SetName("A")  
              doc.InsertObject(nulla)  
              aTag = o.MakeTag(1018074)  
              aTag[c4d.HAIR_CONSTRAINTS_TAG_ANCHOR_LINK] = nulla  
              c4d.CallButton(aTag, c4d.HAIR_CONSTRAINTS_TAG_SET_ANCHOR)  
                
              select_points.DeselectAll()  
              select_points.Select(pc-1)  
              nullb = c4d.BaseObject(c4d.Onull)  
              if nullb is None:  
                  return  
              nullb[c4d.NULLOBJECT_DISPLAY] = 2  
              nullb.SetAbsPos(c4d.Vector(o.GetPoint(pc-1)[0],o.GetPoint(pc-1)[1],o.GetPoint(pc-1)[2]))  
              nullb.SetName("B")  
              doc.InsertObject(nullb)  
              bTag = o.MakeTag(1018074)  
              bTag[c4d.HAIR_CONSTRAINTS_TAG_ANCHOR_LINK] = nullb  
              c4d.CallButton(bTag, c4d.HAIR_CONSTRAINTS_TAG_SET_ANCHOR)  
  
              o.InsertTag(c4d.BaseTag(1018068))  
  c4d.EventAdd()  
    
if __name__ == "__main__":  
  main()

I made similar script that uses CallButton function with Spline Dynamics tag to set fixed points and it works. Weird...

Helper

On 31/08/2017 at 05:51, xxxxxxxx wrote:

Hi,

this got discussed just recently. Please have a look at CallButton Won't Work on new Tags.

Helper

On 31/08/2017 at 08:05, xxxxxxxx wrote:

Thank you Andreas. Now it works!