How to limit length of Chained Polar Rotate?

How to limit length of Chained Polar Rotate?

Colin-Pearson
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How to limit length of Chained Polar Rotate?

Colin-Pearson
Advocate
Advocate

Hello Folks, happy Tuesday!

I've got part of a block here.   I need the top square piece to control the diagonal portion, and once the bugs are worked out, I'll add a second identical diagonal to the other side. 

 

I've used a Chained Polar to rotate/stretch the diagonal and a Chained Point/Stretch to drive the Polar Parameter.  Since the point that needs to drive the overall block needs to be that square piece at the top, I've used a Point/Move at the middle of that to drive the Chained Point/Stretch.  It all works EXCEPT the min/max on the Polar don't seem to be working.  

 

Any ideas?  Thank y'all so much!!

 

 

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j.palmeL29YX
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Mentor

First: I'd simplify your block as attached. But perhaps I don't know all needed functionality, and that's not the matter. 

 

To your problem: As far as I know it is not possible, to restrict the values of a chained parameter while it is driven by another action. Only if you drag this parameter directly a restriction (min/max) works. So I think you need to find a way to restrict the movement of the driving point parameter. 

Before I try to find another way can you please confirm if my current simplification is allowed or if it will cause other problems. 

 

 

Jürgen Palme
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Colin-Pearson
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@j.palmeL29YX         We have a couple meetings coming up first thing this morning, but I'll check it out right after that.  Whether or not the simplification works, I definitely appreciate you taking the time to help out.

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Message 4 of 4

Colin-Pearson
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There will be a duplicate of the diagonal piece on the other side, so I'm sure the simplification you made @j.palmeL29YX will work fine there as well.  100% dig the simplification also, thank you.

 

Other functionality will be stuff above the top/middle square piece (stuff that's not in the block yet) and those objects will only have to be stretch and move with the square, so I don't anticipate any interference there either.

 

I might try one of the XY Parameters; I've never had a chance to use one yet.  The overall movement is controlled by two things: 1) the stroke of the hydraulic cylinders at the bottom of the Polar , and 2) a maximum horizontal movement limited by the design calcs of the overall system.  If it was only controlled by the length that the hydraulics could extend to, I don't think the XY would do it, but with the limit already imposed on the X , I think I can just work out the trig to determine min/max for the Y movement. 

 

Thanks again for your input.

 

 

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