mirror of
https://github.com/processing/processing4.git
synced 2026-01-31 20:31:10 +01:00
37 lines
824 B
Plaintext
37 lines
824 B
Plaintext
/**
|
|
* Rotate.
|
|
*
|
|
* Rotating a square around the Z axis. To get the results
|
|
* you expect, send the rotate function angle parameters that are
|
|
* values between 0 and PI*2 (TWO_PI which is roughly 6.28). If you prefer to
|
|
* think about angles as degrees (0-360), you can use the radians()
|
|
* method to convert your values. For example: scale(radians(90))
|
|
* is identical to the statement scale(PI/2).
|
|
*/
|
|
|
|
float angle;
|
|
float jitter;
|
|
|
|
void setup() {
|
|
size(200, 200);
|
|
smooth();
|
|
noStroke();
|
|
fill(255);
|
|
rectMode(CENTER);
|
|
frameRate(30);
|
|
}
|
|
|
|
void draw() {
|
|
background(102);
|
|
|
|
// during even-numbered seconds (0, 2, 4, 6...)
|
|
if (second() % 2 == 0) {
|
|
jitter = random(-0.1, 0.1);
|
|
}
|
|
angle = angle + jitter;
|
|
float c = cos(angle);
|
|
translate(width/2, height/2);
|
|
rotate(c);
|
|
rect(0, 0, 115, 115);
|
|
}
|