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Index › Programming Questions & Help › OpenGL and 3D Libraries › LOGO Turtle 3D - how rotate 3D
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LOGO Turtle 3D - how rotate 3D (Read 5676 times)
gll
Re: LOGO Turtle 3D - how rotate 3D
Reply #15 - Aug 24th, 2009, 10:45am  
[agarttha] I really like LSystems. My Thesis is currently on something similar for architecture. We met Prusinkiewicz last year and LSystems is where we are heading at. This explain why we started our Turtle implementation. We have a prototype for LSystem running.

[tjmeister] I really like SCRATCH. The very nice thing about LOGO-Scratch for me is that it's quite similar instructions that you give to CNC machines (GCODE or HPGL). So there's an equivalence between learning programming with local referencing system.

[Chrisir] We found a problem the rotations that we used for the turtle. This seems to be a Gimbal Lock problem. We wanted to stay away from the Quaternions Rotations by using linear geometry, but it seems that we need fix this. Meanwhile, you could add .001 to your 90 rotations. Like RT 90.001 instead of 90 (90 could might be problematic).
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Chrisir
Re: LOGO Turtle 3D - how rotate 3D
Reply #16 - Nov 2nd, 2009, 12:12pm  
Dear gll,

thank you for coming back to me.
90.01 works fine!
Please keep me up to date with anything that's new.

Thank you!

Greetings, Chris
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