Line Tracing

[Sarah]

Hi Roger,

I'm not quite sure what it is you are trying to do. If you stop the 
screen from updating, you won't see your graphic move. It will appear 
to leap from the start position to the end. Do you want to see it 
follow a path, but not see anything else happen? If so, perhaps you 
should consider a sub-stack so there is nothing but your graphic in the 
window.

If you want to end up with a line across the window, then I would 
recommend using a polygon graphic and setting it's points. This is 
quick to do in a script and the screen update only has to happen once, 
when you set the points of the graphic to the set of points that you 
have just calculated using your equation.

If you want an example, let me know.

Cheers,
Sarah

On Friday, January 31, 2003, at 01:55  pm, Roger Guay wrote:

> Thanks to Gary Rathbone and Jim Hurley for their suggestions, but the 
> Lockscreen property does not work, and although Jim's script is very 
> clever, it results in a very choppy motion compared to repeatedly 
> setting the loc of an object via an equation of motion (such as a 
> projectile.)  Any other ideas?
>
> Thanks, Roger
>
>
>> I would like to trace a line by moving a small brightly colored 
>> graphic
>> (say via an equation of motion).  This would require that I prevent 
>> the
>> screen from updating while the graphic is in motion.  I've done this 
>> in
>> other APDs but I can't seem to find the way to do it in RR.  Any 
>> ideas?
>>
>> Thanks and Cheers, Roger
>
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