コード
import processing.pdf.*;
import java.util.Calendar;
boolean recordPDF = false;
void setup() {
size(960, 540, FX2D);
colorMode(HSB, 360, 100, 100, 100);
blendMode(ADD);
background(0, 0, 0);
}
void draw() {
translate(width/2, height/2);
rotate(frameCount*0.01);
int circleResolution = (int) map(mouseY, 0, height, 3, 10);
float radius = map(mouseX-width/2, 0, width, 0, sqrt(sq(width/2)+sq(height/2)));
float angle = TWO_PI / (float)circleResolution;
strokeWeight(2);
stroke(frameCount%360, 80, 100, 15);
noFill();
if (mousePressed) {
beginShape();
for (int i = 0; i <= circleResolution; i++) {
float x = cos(angle * i) * radius;
float y = sin(angle * i) * radius;
vertex(x, y);
}
endShape();
}
}
void keyReleased() {
if (key == DELETE || key == BACKSPACE) background(0, 0, 0);
if (key=='s' || key=='S') saveFrame(timestamp()+"_##.png");
if (key =='r' || key =='R') {
if (recordPDF == false) {
beginRecord(PDF, timestamp()+".pdf");
colorMode(HSB, 360, 100, 100, 100);
println("recording started");
recordPDF = true;
smooth();
noFill();
background(0, 0, 0);
} else {
println("recording stopped");
endRecord();
recordPDF = false;
background(0, 0, 0);
}
}
}
String timestamp() {
Calendar now = Calendar.getInstance();
return String.format("%1$ty%1$tm%1$td_%1$tH%1$tM%1$tS", now);
}
リファレンス
