Processing: Creative Coding and Computational Art

PROCESSING: CREATIVE CODING AND COMPUTATIONAL ART
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One of the nice things about waiting until Chapter 11 to cover motion is that I’ve had time
to properly introduce and reinforce basic coding principles and structures, allowing you to
focus on more creative applications using these structures. Thus, I’m going to assume you
understand the code in the last example. If, however, the array structures still seem confusing,
I recommend a quick review of the section on arrays, in Chapter 3. I can improve
this last sketch by alternating the y position of the rectangles over time and using variable
speed (shown in Figure 11-3):
// Painting Stripes II
int shapes = 200;
float[]speedX = new float[shapes];
float[]speedY = new float[shapes];
float[]x = new float[shapes];
float[]y = new float[shapes];
float[]w = new float[shapes];
float[]h = new float[shapes];
color[]colors = new color[shapes];
void setup(){
size(400, 400);
frameRate(30);
noStroke();
// fill arrays will random values
for (int i=0; i