Dynamic Block help

[robwell]

Thanks for reading and helping.

I am trying to create a dynamic block with certain parameters, but having trouble.

I would like my Dynamic block to have an object (3/16 diam circle) to insert 6" to the right of entry point.

Then has to stretch to the right with a second circle inserting 6" from the opposite end point after stretch reaches a minimum of 18".

However, if the stretch distance from insertion point to end point is less than 18", then the circle must be centered.

So,
1) Circle must be centered along stretch if < 18"
2) Two circles 6" from each end if > 18"

I know there are much smarter people out there that can figure this out. It's just slipping my understand how to execute this in the block.

I hope this description makes sense.

Thanks

[Incognito Cube]

I believe I'm correctly understanding the basic layout of the block you're attempting to create. This looking correct so far?

[Incognito Cube]

Crap. Do I have to wait for an image link to be approved?

[robwell]

I don't know. Maybe so. I'm not seeing an image though.

[iconeo]

You need to use a double lookup table with intervals set to different visibility states as you stretch it in order to toggle from centered to end aligned.

Sent from my Pixel 2 XL using Tapatalk

[SLW210]

Crap. Do I have to wait for an image link to be approved?

All links need approval until you reach 10 posts, but you can attach images directly in CADTutor, no link needed and no waiting for approval, you can attach lots of things directly to CADTutor, just click Go Advanced then Manage Attachments.

Your image is not awaiting approval though, I can't see it because third party image hosting sites are blocked at my work.

[iconeo]

Sorta like so.

test.dwg

[robwell]

I think I almost have it figured out thanks to your help. I had something already before you posted this example, but it needs tweaking to get it to auto switch visibility states when I pass the 18" mark. I like your example, but I need the base point to be left most and the stretch to the right from there. I like trying to figure these out and build them myself, just need that push with what I am not seeing to do it.

[iconeo]

I like trying to figure these out and build them myself, just need that push with what I am not seeing to do it.

Best way to learn IMO

[robwell]

So I am still having trouble figuring out the transfer from one visibility state to another when dragging the stretch past the 18" distance. I would like to use a seamless transition as in your example, but what am I missing.

I am attaching my block for reference and pointers.

WEEPHOLE.dwg