Dynamic block that stretches and keeps the center arcs in place

[todouble22]

Hello All,

I made this dynamic block for a "curly bracket" }. It has stretch actions on both ends and it keeps the middle arcs in place, but I was trying to just have one stretch action and it will keep the arcs in the center after stretching. I tried it with distance multiplier to .5 but I couldnt get it to work? I also set a move action associated with the distance parameter? Could anyone help me and tell me what I'm doing wrong here? Thank you in advance. -todd

stretchbracket.dwg

[dbroada]

I'm at home so can't look at what you have done but you can have one distance parameter with two stretch actions.

 

You are right about one action having a 0.5 multiplier while the other has a -0.5 multiplier. Alternatively the first has a 0.5@90 action, the otehr 0.5@-90

[edwinprakoso]

Hello All,

I made this dynamic block for a "curly bracket" }. It has stretch actions on both ends and it keeps the middle arcs in place, but I was trying to just have one stretch action and it will keep the arcs in the center after stretching. I tried it with distance multiplier to .5 but I couldnt get it to work? I also set a move action associated with the distance parameter? Could anyone help me and tell me what I'm doing wrong here? Thank you in advance. -todd

Try mine.

You need to change the parameter base location to 'midpoint'. Then you need to add stretch action to both side. Since you only need one stretch point, I remove one arrow

stretchbracket-edwin.dwg

[todouble22]

Perfect edwin!! and thank you!

[todouble22]

Edwin,

I tried creating the dynamic block myself after looking at yours, and it doesn't seem to work. I am wondering if there is some sort of "order of operations" for selecting objects for the linear parameter and stretch actions, or select all of them or is it just trial and error? your help is much appreciated!

[edwinprakoso]

No, the is no certain order you need to follow.

1. Just add the parameter
   
2. change property pallete: base location to midpoint.
   
3. add 2 stretch action: one on the left of your bracket AND one on the right of your bracket. You need to add two action, but use one parameter.
   

If you still confused, try to open my block in block editor. And see where I put the actions.

[Rod Carroll]

Thanks,

The key for me was changing the base point to midpoint.

[Nardino]

Try this small routine that was given to me

Curls.lsp

[Rod Carroll]

I bet it's a nice routine, but I use LT. The previous discussion worked just fine for me. I was already trying the correct setup with the base point in the wrong position.

[Nardino]

i am sorry, i did not know you were using lt