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Spiral (helix) decal value (#2468)
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jol  
#1 Posted : Saturday, July 25, 2009 2:46:53 AM(UTC)
jol

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Hi Tim

I've been trying to get a certain result with the helix tool and have discovered by playing in AI that I need a helix with a "decay"

Is there any chance that this is something you could add to our tools

Thanks

Jol
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L. Banasky  
#2 Posted : Saturday, July 25, 2009 8:42:23 AM(UTC)
L. Banasky

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Hi Jol,
Just out of curiousity, what result is expected.
Larry
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blowlamp  
#3 Posted : Saturday, July 25, 2009 11:06:34 AM(UTC)
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Jol.
I'm just guessing what you might be after, but I came up with the result in the second and third pictures by using the Twist tool. Is that something like you want?

Martin.
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beforetwist.JPG (93kb) downloaded 7 time(s).
aftertwist.JPG (113kb) downloaded 9 time(s).
aftertwisttop.JPG (105kb) downloaded 9 time(s).

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jol  
#4 Posted : Sunday, July 26, 2009 4:08:23 AM(UTC)
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Hi Larry

I can think of several uses for acceleration in a spiral - in this case it's pretty low tech .. it's for a hanging kid's mobile - spirals that turn in the breeze

The spirals are simply more interesting if they are not simple offset coils - but widen or narrow as they fall
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L. Banasky  
#5 Posted : Sunday, July 26, 2009 10:56:07 AM(UTC)
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>>
Hi Jol,
I have one made of wood pieces, low tech, but it works.
Larry
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100_0255.JPG (1,489kb) downloaded 6 time(s).

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jol  
#6 Posted : Sunday, July 26, 2009 1:32:52 PM(UTC)
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Hey Larry - that's brilliant !!
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Tim Olson  
#7 Posted : Wednesday, July 29, 2009 7:43:56 PM(UTC)
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Jol

You could try and use the File: Import Spline which has the ability to construct splines from equations. Example attached with a quadratic and cubic coil expansion.


Tim
File Attachment(s):
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Tim Olson
IMSI Design/Encore
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L. Banasky  
#8 Posted : Friday, July 31, 2009 3:39:25 AM(UTC)
L. Banasky

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Hi Tim,
Is there a helix.txt file that could be used to produce the clock fusee part discussed in http://forum.punchcad.com/showthread.php?t=2462
Thanks, Larry
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Tim Olson  
#9 Posted : Friday, July 31, 2009 11:04:00 AM(UTC)
Tim Olson

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Originally Posted by: L. Banasky Go to Quoted Post
Hi Tim,
Is there a helix.txt file that could be used to produce the clock fusee part discussed in http://forum.punchcad.com/showthread.php?t=2462
Thanks, Larry



Hi Larry,

If you can define the curve as an equation of x,y & z we could come up with a helix.txt file.

For the helix in previous post the x,y,z are...

LAWSPLINE
0
40
vec(cos(u),-5 +sin(u),(u/20))

where

Min U value = 0;
Max U value = 40
x = cos(u)
y = -5 + sin(u)
z = u/20




Tim
Tim Olson
IMSI Design/Encore
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L. Banasky  
#10 Posted : Friday, July 31, 2009 11:29:48 AM(UTC)
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Hi Tim,
The import spline file looks for an extension of .spl.
I know that you are very busy, but if you do have time, post an example on how to use helix.txt.
Thanks, Larry
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chipmaker2  
#11 Posted : Sunday, August 23, 2009 12:06:53 PM(UTC)
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Originally Posted by: Tim Olson Go to Quoted Post
Jol

You could try and use the File: Import Spline which has the ability to construct splines from equations. Example attached with a quadratic and cubic coil expansion.


Tim


Thanks Tim for text file, it works well. Just what I was looking for. See attached files
Windows ViaCad 2D3D
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