Processing: Creative Coding and Computational Art

PROCESSING: CREATIVE CODING AND COMPUTATIONAL ART
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I mentioned at the beginning of the chapter that Processing (with a little help from Java)
allows you to detect multiple mouse clicks. To close the chapter, I’ve included one last simple
example that utilizes multiple mouse clicks on the display window to dynamically
change the number of sides of a polygon. The simple piece of Java code that allows you to
detect multiple mouse clicks is mouseEvent.getClickCount(), which returns an integer
value of the number of clicks. The time delay between clicks determines if the series of
clicks is considered a multiple click input or a series of individual clicks.
// Detecting Multiple Mouse Clicks
int clickCount = 0;
void setup(){
size(400, 400);
smooth();
}
void draw(){
background(255);
translate(width/2, height/2);
rotate(frameCount*PI/180);
drawPoly();
}
void mouseClicked(){
clickCount = mouseEvent.getClickCount();
}
void drawPoly(){
// draw point if single click
if (clickCount==1){
point(0, 0);
}
else {
float ang = 0;
int verts = clickCount;
beginShape();
for (int i=0; i