Hi Adrian, While we are on the subject of symmetry, I thought I'd pass these two OFF files along. http://www.interocitors.com/tmp/sym.zip I named them C2 and...
Hi Roger ... The first one has C2h symmetry. The second one has S6 symmetry (the 6 is because the symmetry is generated from a single operation which is a...
... I have just encountered this when calculating the rotation angles of the symmetries of a tetrahedron. Some of them have an angle of 90 degrees. This is...
Hi Adrian, ... Interesting. I did see a 6 fold symmetry, since the pattern is reversed on the 1/6th turn. But I didn't think there was a way to describe it. So...
Hey Roger, ... Should that say C2 and C3? ... 3-fold already refers to a rotational symmetry. What it detects in addition is rotation-reflection symmetry, a...
Hi Rob ... The 90 degrees from my earlier email wasn't the angle between axes, but the angle of the rotation associated with the symmetry operation. I...
Hi Adrian and Rob, ... Is Ci even possible to show at all? I was thinking rays which would connect relevent parts running through the origin. This would be a...
Hi Roger I can't find the message but I think you were interested in converting decimals to approximate rational numbers before. I have just had to do this to...
... I think that the largest denominater allowable probably has to be less than the square root of the largest value that can be held as an integer (in my code...
Hi Adrian, The one I was using is here. http://www.mindspring.com/~alanh/fracs.html I never looked into the code, but it must be embedded in the page. Once ...
Hi Roger ... The code is in the page. I will go through it to see if it improves on what I am currently doing. I have symmetry detection working now. I analyse...
Hi Dick ... If you think of just four squares around a gap, then they can move in essentially only one way. If you join a pair of joined squares to those four,...
Adrian, ... Supurb! This is the kind of model that would be fun to have a 3D realtime animation to zoom through. The animation I'm thinking of would be playing...
... Yes. I have upgraded to ADSL2 which gives me the speed to view that size file with ease. I am hoping at some stage we can have 3d animation animation to...
I did some hunting and haven't found anything. There might be something that can do it in geomview itself. I found this about the animate module in the...
Hi Roger ... I had a look at this and it works with the torus animation, except that it seems to be setting up a default camera position for every frame so...
Hi dharmraj ... That sounds better than dial-up! ... I was curious about how big an OFF frame animation of the Torus Jitterbug would be. As a zip file (which I...
Adrian Rossiter wrote: "I was curious about how big an OFF frame animation of the Torus Jitterbug would be. As a zip file (which I could add a facility to read...
Hi Adrian, ... In that case it is just like looking at the gif file! The viewing position and the OFF models position need to be independent of one another. If...
Hi Roger Yes, Tim Tyler is also on the Synergeo group you may have heard mentioned here. I'll forward your message to him. I'm sure he will be please you are...
SpringDance You can get the last version from my website. http://members.westnet.com.au/dharmraj/ I have a copy stored there. The link to it is on the above...
Hi dharmraj ... The recent animation models were Python scripts writing OFF (it is very easy to write OFF from a script.) The only use of Antiprism was the...
Hi Roger ... They appear to be, but there seems to be an extra transformation added to each frame to put the camera in its default position. Future camera...
... Hi: That is a really good idea and I tried this afternoon. I copied and pasted the script into a text file and saved it so that it came up a python file. I...
Hi dharmraj ... I expect that where X was set it ended up indented under the 'if'. The original indentation is available through Yahoo. On the right hand side...
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