[Plugin] Antiprism v1.1 20101114

[TIG]

(c) TIG 2010
Permission to use, copy, modify, and distribute this software for
any purpose and without fee is hereby granted, provided that the above
copyright notice appear in all copies.
THIS SOFTWARE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

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antiprism.rb >>> Plugins Folder

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Usage:
Tool to make an 'Antiprism'.
Type into Ruby Console:
antiprism number_of_sides, length_of_a_side
e.g. antiprism(3, 1.m)
It is grouped and made centered at the origin.
It is named 'Antiprism[3x1.000]'.
Height is calculated so its side-triangle edges equal its side length.

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Donations:
by PayPal to info @ revitrev.org

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Version:
1.0 20101113 First Release.
1.1 20101114 PI glitch fixed.

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attachment=0]antiprism.rb[/attachment]

[Pilou]

Maybe more speedy than my speedy method

[TIG]

Here are some examples:

antiprisms3-12.PNG

[Pilou]

At the endless infiny, it's a cylinder

[TIG]

At the infinity, it's a cylinder

It is...
although a cylinder as a 'prism' has thin rectangular faces
and an antiprism 'cylinder' has triangular faces...

[Pilou]

And a real cylinder has just one curvated surface in the world of Nurbs

[TIG]

And a real cylinder has just one curvated surface in the world of Nurbs

In Sketchup it has a 'Surface' too but that consists of 'Faces' with smoothed 'Edges' between them!
A 'cheat'

[TIG]

I've made the matching 'Prism' tool here viewtopic.php?p=287169#p287169
So that you can now make 'prisms' AND 'antiprisms', with any number of sides and size length.

[sketchup_roolz]

I'm dumb! Works great!

[TIG]

Here's v1.1 viewtopic.php?p=287140#p287140
It fixes a rare potential 'PI' glitch if you don't have certain other scripts installed...

[sketchup_roolz]

Here's v1.1 viewtopic.php?p=287140#p287140
It fixes a rare potential 'PI' glitch if you don't have certain other scripts installed...

Thanks!