homework 4 (optional)
this homework is optional, meaning, you can do it if you want and get some extra credit. I strongly recommend you do these optional things,
you will get more out of the class and it will challenge you. Please also try to document your solutions by recording a movie -
it'll help your pages and also your classmates.
a) using the point recorder code, create multiple point recorders insted of just one. Every time you draw, create another point recorder.
Create a clear function. Can you use these multiple point recorders to create something interesting ? shoot a short video.
I just made two point recorders for this one. I'm guessing I could use an array or a vector to make more, but I wanted to solve this the easiest
way possible. I intended to come back to it later, but I started having fun with the other parts of the homework and ran out of time. Any key
press will clear the point recorders.
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b) right now the playback of the point recorder is just one point (at time t), can you create a second point (at time time-1.0,
ie time minus one second, for example) as in Scott Snibbe’s motionsketch ? It would be nice to use the total duration to figure
out to space out multiple playbacks so they are equally divided.
When I did this one, I drew a second circle at the time minus one second point and I colored it blue. After I watched the sketch, it reminded me
of red and blue 3-D images, so I adjusted the colors to match more perfectly and I tried it with 3-D glasses. It looks pretty good, but to be
truly 3-D, I would need for the images to never switch sides. Since blue always follows red, it will only give the impression of 3-D when it's going
from left to right. From right to left, it spoils the illusion. I could fix it by making the blue circle's x value always somewhere to the left of
the red circle's x. I decided to leave it as it is though to satisfy the homework assignment.
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c) in one example, point recorder is use to control the property of sound synthesis. can you use it to control some other properties of media,
like playback position of a movie or opacity of some images? Think about all of the parameters you can get from the playback unit and how you
can use them. Make some playful, creative system.
I did two sketches for this one. With the first one, I used the point recorder to control the alpha value of the top level image, revealing
the lower image as it fades. In the second sketch, I use the point recorder to control the speed and amount of rotation forn the image.
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