Fell a few weeks behind in Computer Science class and spent all my free time using Vizwik to do this stuff, finding out about features they didn't tell me they had until a few days after I started looking for a work-around, tried to find definitive rules for when you would do one thing over another when the angles lined up like this, etc. Finally I had a finished app, and it didn't work.
Then I'm taught about Vectors, finally, and in two days (just during class time) I made this app that does the same job much, much more easily. Good times, though, it was fun trying to puzzle this stuff out even if some other things fell by the wayside.
Moral of the story: If something is really, really difficult, and you're not sure how to do it, keep an open mind as to alternate approaches. If that doesn't work, though, remember that the journey is just as important as the destination, and you'll still learn something along the way even if it doesn't work the way you thought it would.
I learned not to use Vizwik, and about Vectors. Truly worth two months of obsession.
Anyways, this app does the thing mentioned before, about the Displacement and the angles and stuff. It's useful for shortcutting stuff, if you're into that. Title and download link below, cause this is long enough as it is.
This does the finding of the thingamajigger and stuff. Yeah. Beating a dead horse here explaining that. You probably want to know how to actually run it, don't you? It can be kind of tricky. I'll post a Visual Basic tutorial for the user soon so that you can find out, but in layman's terms, you press F11 or the combination necessary to make that work, find the first page in the top left box, double click to select it, and then press the Play triangle. The proper tutorial will have pictures.
![](http://www1.weebly.com/weebly/images/file_icons/rtf.png)
displacement_.docm |