Path object double transformation question

[dedeks3000]

hye all,

I have a serie of nulls attached to an curve (build from others nulls through a merge sop node).

 

This TOP nulls are parented to a master control object and when i scale the master , all work well except for the objects atached to the curve (scale inversely).

 

I can always link the scale parm to the master scale but this is too tricky for my purpose.

Someone knows what it happend behind this sort of inversed double transformation ???

 

 

 

 

curve_cnst_001.hipnc

[edward]

When you're using a Path object, that only places the position of the object on the path, it doesn't inherit the scale at all. There's no double transform going on at all. If you want to link the scales together, I think you would need a python expression something like this:

hou.node('../master_ctrl').worldTransform().extractScales()[0]

[dedeks3000]

OK --> no double transform ....   

 

Using the world transform scale instead of the direct scale referencing make more sense.

An alternative method using CHOP with an object node can also be used (maybe  it's a more organized way).

 

Thans a lot @edward.

Edited December 14, 2014 by dedeks3000