As I said, it’s really simple, it’s not the best code but it gives you some ideas of how it’s made.
Inside the “tags” folder, I have three pngs for each shape (triangle, square and circle).
You draw the shape you want, I trim it, and compare to each png.
The comparisson is, get the drawn image, stretch it to the size of each png, and apply threshold. The BitmapData.threshold returns you an uint, the number of pixels that has been changed. With this number, divide it to the area of the png, and than, you choose the one that returns you tha smallest number.
and… that’s it. simple simple…
actually, it’s a technique used for some facial/object recognition softwares, but in a simplified way.
Well, I went to the Flash On The Beach for the first time this year. Was really cool and inspiring.
The first night, I had some inspiration, nothing to deal to any of the presentations I saw, but just something that I wanted to test. I couldn’t upload it because I didn’t have internet at the hotel, and at the venue the firewall was blocking me to connect to my FTP.
So, what was my experiment this time?
Gesture!
I think it’s working quite nice for a code I took less than an hour to write. It was much easier than I thought.
Just click and try to draw a Triangle, Circle or Square.
Enjoy!
I’ll post the source code later… let me take a nap now.
And the source files zipped with the demos I showed.
http://www.hellokeita.in/presentations/LFPUG/20090827/examples.zip
The contents are:
Example01-SineWaveExample: Simple example generating a sine wave
Example02-KeyboardExample: Example of a piano keyboard
Example03-WaveformExample: Changing the waveform of a sound
Example04-TimePitchExample: Changing pitch and tempo of a mp3
Example05-HeliumBalloon: Real time pitch shifting using Java
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