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Draw a straight line
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DickBaldwin
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Default Draw a straight line - 02-08-2008, 08:55 AM

Just for fun, I would like to write a 3D version of the string-art program at

http://scratch.mit.edu/projects/Paddle2See/89023

Does anyone know how to draw a straight colored line between two points in Alice 2.0 3D space?

Thanks,
Dick Baldwin
Free Alice tutorials: http://www.dickbaldwin.com/tocalice.htm
Free programming tutorials: http://www.dickbaldwin.com/toc.htm
   
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John_Clark
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Default 02-08-2008, 11:52 AM

I have an idea but I'm not 100% sure it will work but I will still throw it out is you could make a straight line in paint or something and import it on a billboard and then assign each line to a set a moreable spheres and have them move on the axis of the spheres. Good luck and I hope this works for you.
   
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DickBaldwin
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Default 02-08-2008, 12:19 PM

Quote:
Originally Posted by John_Clark View Post
I have an idea but I'm not 100% sure it will work but I will still throw it out is you could make a straight line in paint or something and import it on a billboard and then assign each line to a set a moreable spheres and have them move on the axis of the spheres. Good luck and I hope this works for you.
I assume that you mean moveable spheres instead of moreable spheres.

I don't know what you mean by "assign each line to a set a moveable spheres and have them move on the axis of the spheres." Can you describe that process in more detail, or perhaps provide a short sample program that implements the process.

Thanks,
Dick Baldwin
Free Alice tutorials: http://www.dickbaldwin.com/tocalice.htm
Free programming tutorials: http://www.dickbaldwin.com/toc.htm
   
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dadcat
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Default 02-08-2008, 10:27 PM

Probably far from optimal, but you can insert axes, resize two of them (up and right) to negligable size (.001). Do the same for the forwardSign, and change the color of forward object to whatever color you want.
You still have an arrowhead at one end and getting it to extend from one specified point to another isn't entirely trivial, but move to, point at and resize should be able get the job done.
   
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DickBaldwin
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Default 02-09-2008, 07:59 AM

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Originally Posted by dadcat View Post
Probably far from optimal, but you can insert axes, resize two of them (up and right) to negligable size (.001). Do the same for the forwardSign, and change the color of forward object to whatever color you want.
You still have an arrowhead at one end and getting it to extend from one specified point to another isn't entirely trivial, but move to, point at and resize should be able get the job done.
Very creative idea. Unfortunately, the thickness of the resulting object increases and decreases in proportion to its length.

Thanks,
Dick Baldwin
Free Alice tutorials: http://www.dickbaldwin.com/tocalice.htm
Free programming tutorials: http://www.dickbaldwin.com/toc.htm
   
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John_Clark
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Default 02-11-2008, 11:49 AM

[QUOTE=DickBaldwin;4590]Very creative idea. Unfortunately, the thickness of the resulting object increases and decreases in proportion to its length.

Ya thats kind of what I ment sorry if i wasnt clear but what I mean is have the lines connected to the spheres and and the spheres pivot on an axis to connect to another set of spheres to make shapes
   
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