creating a dynamic block to extend opposite ends at same time

[jalba]

I'm trying to create a block, consisting of two rectangles extending from the center. i would like to set a function where if i stretch one side of the rectangle further away from the center, the other rectangle shall follow suit but in an opposite direction.

 

I know it can be possible if i set one parameter as a chain function, but i'm just not getting it.

 

Thanks for any assistance.

sample.dwg

[dbroada]

you don't need a chain function. You need one parameter and 2 stretch actions from the same parameter. Give one action a 100% scale, the other -100%

[jalba]

you don't need a chain function. You need one parameter and 2 stretch actions from the same parameter. Give one action a 100% scale, the other -100%

 

ok, but how to set those figures? i'm not seeing any particular area under the Properties bar.

[jalba]

hey i got it!!!

 

this is what i did....

1* set paramter (have one grip point)

2* set stretch option for one side.

3* set stretch option for other side (using same grip point as previous)

4* set distance override of second stretch to -1

5* SAVED!!!

 

thanks!!!!

[fuccaro]

There is an other way. Not simpler, just other. Add a Move action to the same parameter. Read more here:

http://www.cadtutor.net/forum/showthread.php?t=5584

I encourage you to learn something new, I hope your head will not hurt very hard. Nice signature!

[dbroada]

hey i got it!!!

 

this is what i did....

1* set paramter (have one grip point)

2* set stretch option for one side.

3* set stretch option for other side (using same grip point as previous)

4* set distance override of second stretch to -1

5* SAVED!!!

 

thanks!!!!

that's it

 

I was doing it from memory so didn't quite get the term right but glad you got there.

 

now off to look at fuccaro's link..... (only to see I had already commented - it was 4 years ago though )