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Ghost construction for the second circle tangent during animation
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A construction using one of two tangents to a circle is duplicated for the other tangent and appears as a flickering ghost during animation. How can this be avoided?
Files:
Error-Demo.ggb
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I think its a bug.
Maybe this workaround help (and is robust)
The problem has returned even with Continuity On
Please see the attached files
The screen recording would not load so here is the .ggb file
I would appreciate any ideas
I do not know how the construction is done but I think that R works fine and A_1 not. Is A_1 done in the same way, same steps that R?
Thank you for taking the time to look at this. The construction is the same for both, I select one of two tangents to a circle come to define the line that defines the blue links. However, on the A1 side I believe the two tangents come together at the point where the ghost appears. The dimensions come from the patent drawing I am animating, but I might be able to change the dimensions to avoid this singularity. I will give it a try. Thank you.
It seems a bug. The att'd worksheet shows the correct behaviour of locus1 when angle has a limited range. Cheers
It seems a bug. The att'd worksheet shows the correct behaviour of locus1 when angle has a limited range, i.e. [-120degs,+120degs]. Cheers
P.S: forum platform refused my ggb upload
Tried again
I have studied your Geogebra applet and I realize that your construction is very unstable in that it is built on very free points (E, D, F) and that is why you have an unstable geometric location calculation.
Look at how I built “Baby Crawler w1” and I appended to my remarks one day ago.
Kind attention to user Seror.
Please be noticed that your "Baby_Crawler" sheet shows a different solution of the proposed one: two loci instead of one, as per attachment.
In principle Geogebra should solve any construction without drawbacks. Cheers
Amended my previous sheet, in compliance with above rami's drifts and by using one leg only, as per attachments. Cheers
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