[Plugin] Cyma Curve Tool

pilou

For stones carvers

JClements

From wikipedia:
"...The ogee curve is an analogue of a "cyma curve", the difference being that a cyma has horizontal rather than vertical ends..."

Not sure what is meant by horizontal v.s. vertical ends.

d12dozr

This is an ogee(the leftmost part of the image):

So I imagine a cyma curve is rotated 90 degrees.

Also useful for woodworkers...thanks TIG!

@JClements: I was going to post that exactsame sentence from Wikipedia

JClements

If you use the option to produce faces, the face extrudes with one "seam" along the cyma surface where the two arcs touch one another (can there be an option to "auto-weld" the two arcs?).

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Peculiar arcs are drawn.

?? BUG: If you click on the "lower" arc, it is a polyline. However, if you click on any portion of the "upper" arc, only a segment is selected (of a the 36 defining the arc), yet it can extrude a smoothed surface. How can this be?

d12dozr

@jclements said:

?? BUG:... However, if you click on any portion of the "upper" arc, only a segment is selected (of a the 36 defining the arc), yet it can extrude a smoothed surface. How can this be?

I see that too...if you select one of the segments, actually 2 segments are selected - the one you chose as well as the segment at the end of the arc.

TIG

Here's v1.1 http://forums.sketchucation.com/viewtopic.php?p=230584#p230584

FR lingvo by Pilou added.
Faced option curves now welded as one so smooth extrusion without a mid-point join.

TIG

I'm looking at this 'BUG' where one of the arcs is in bits but still an arc ???
Update soonest...

TIG

Here's v1.2 http://forums.sketchucation.com/viewtopic.php?p=230584#p230584
The buggy second arc formation has been fixed - I simply made it a different way that now works - I think the problem had something to do with the curves being drawn the opposite directions but whatever it was it's now sorted ?

TIG

Here's an explanation of the the 2 types of Cyma Curve...

TIG

Here's v1.3 http://forums.sketchucation.com/viewtopic.php?p=230584#p230584
Fixed a potential glitch from a missing 'require deB...'

MALAISE

Thx TIG

You've done a pretty good Job. I'm sure you enjoy coding

MALAISE

Gaieus

Thatnks TIG - again!

This will definitely be very handy for my ogee arches (which I would probably use more often than cymas)

TIG

Here's an update http://forums.sketchucation.com/viewtopic.php?p=230584#p230584

v1.4 20100311
Non-square forms now possible and sizes entered, X & Y.
VCB prompt now shows the chord-proportion value needed to get tangential ends - useful if it's a non-square form.
The arcs' segments can now be set.
'Gola' and 'Ogee' added to type descriptions.
Notes and lingvo files updated to match changes.

dedmin

TIG

I assume you refer to the 'broken curve' ?
It's down to how the arcs are drawn - I'll fix it

TIG

Here's an update http://forums.sketchucation.com/viewtopic.php?p=230584#p230584
v1.5 The 'broken' curve/arc glitch is fixed and the form is now a welded curve made from the two arcs...

dedmin

lapx

Thanks TIG!

troyhome

i updated and now i get an error when starting su:
Error Loading File CymaCurveTool.rb
undefined method `deBabelizer' for main:Object

i'm on a mac

TIG

There is a file in the zip file called 'deBabelizer.rb' - this goes into the Plugins folder ???