Each processing sketch typically consists of two functions-
setup()– It is called once at the beginning and is generally used for initialization purposes.
draw()– It is called 30 times per second by default making the default framerate of the animation being 30 frames per second.
Implementation of sketch-
The sample codes have been written in java using the processing library and the processing IDE.
Implementation of Walker class-
At this point if we run the sketch, it just displays a ball that sits at the center of the output screen-
In order to move the walker object, we will add a
walk() function to the
Walker class and call it inside the
draw() function in the sketch. We also add a
checkEdges() function in
Walker to prevent the
Walker object from moving out of the screen. We must also modify the sketch to include the new functions we add in the
Walker class. We can also do one more thing, move the
background() function inside
setup(). This way, the background will not be updated every time and we will be able to see the trail, the Walker object leaves behind.
Modified Implementation of sketch-
Modified Implementation of Walker class-
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