I don't see any problem using current convensions if the co-linear case
is disallowed.
If the points are not co-linear. It is sufficient to use the the same
rules that would apply if the three point were to be transformed into
the x-y plane by a series of simple rotations.
Craig
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Not that it really matters, but three points can define a plane and
it's normal based on the order in which they are listed.
For example, declare that you always list the points in a clockwise
direction (based on the desired plane normal). Then you
What about a new plane selection block which allowed you to define an arbitrary
plane using 3 points?
On Apr 19, 2012, at 2:32 PM, Chris Radek wrote:
On Thu, Apr 19, 2012 at 09:18:52PM +0300, Viesturs L??cis wrote:
How hard would it be to add that? It would require 3 coordinates for
each
2012/4/19 Chris Radek ch...@timeguy.com:
On Thu, Apr 19, 2012 at 09:18:52PM +0300, Viesturs L??cis wrote:
How hard would it be to add that? It would require 3 coordinates for
each of start, end and center point.
The guts of linuxcnc already support this kind of motion and have for
some
:) not so fast - never is a very long time! :)
On Apr 19, 2012 2:00 PM, Chris Radek ch...@timeguy.com wrote:
On Thu, Apr 19, 2012 at 09:45:42PM +0300, Viesturs L??cis wrote:
Uhhh, You are right, halfcircles. All three points are on a straight
line, around which the arc can freely rotate. I
On 19 April 2012 19:57, Chris Radek ch...@timeguy.com wrote:
That is just the worst problem. Your system doesn't uniquely identify
any arc. For every start, center, end points there are a pair of arcs
that share the points. This is why we have G2/G3. If you don't have
a normal vector you
2012/4/19 andy pugh bodge...@gmail.com:
On 19 April 2012 19:57, Chris Radek ch...@timeguy.com wrote:
That is just the worst problem. Your system doesn't uniquely identify
any arc. For every start, center, end points there are a pair of arcs
that share the points. This is why we have G2/G3.
Chris Radek wrote:
The correct solution is probably to specify the plane's normal vector.
While it's entirely possible to do, I doubt anyone would ever use this
feature if someone did the work to implement it.
Yup, messy. Maybe NURBS is really the way to go, it seems to solve several
of
, Chris Radek ch...@timeguy.com wrote:
From: Chris Radek ch...@timeguy.com
Subject: Re: [Emc-users] Nonplanar arcs
To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net
Date: Thursday, April 19, 2012, 11:57 AM
On Thu, Apr 19, 2012 at 09:45:42PM
+0300, Viesturs L??cis wrote
of
this new coordinate system.
maybe g14 selects no preferred plane, and disallows g2/3 until g16-19 are
set. maybe it also sets x'y'z' = xyz coordinates?
--- On Thu, 4/19/12, Chris Radek ch...@timeguy.com wrote:
From: Chris Radek ch...@timeguy.com
Subject: Re: [Emc-users] Nonplanar arcs
To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net
Cc:
Sent: Thursday, April 19, 2012 11:13 PM
Subject: Re: [Emc-users] Nonplanar arcs
I don't remember the complete syntax and symbols used but on my fanuc 15m
control G68 sets the rotation angle of one rotary axis. You can use two G68
.
--- On Thu, 4/19/12, Stuart Stevenson stus...@gmail.com wrote:
From: Stuart Stevenson stus...@gmail.com
Subject: Re: [Emc-users] Nonplanar arcs
To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net
Date: Thursday, April 19, 2012, 9:13 PM
I don't remember the complete syntax
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