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https://github.com/processing/processing4.git
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59 lines
1.2 KiB
Java
59 lines
1.2 KiB
Java
import processing.core.*;
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import java.applet.*;
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import java.awt.*;
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import java.awt.image.*;
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import java.awt.event.*;
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import java.io.*;
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import java.net.*;
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import java.text.*;
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import java.util.*;
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import java.util.zip.*;
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import java.util.regex.*;
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public class Rotate extends PApplet {
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/**
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* Rotate.
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*
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* Rotating a square around the Z axis. To get the results
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* you expect, send the rotate function angle parameters that are
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* values between 0 and PI*2 (TWO_PI which is roughly 6.28). If you prefer to
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* think about angles as degrees (0-360), you can use the radians()
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* method to convert your values. For example: scale(radians(90))
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* is identical to the statement scale(PI/2).
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*/
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public void setup()
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{
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size(200,200);
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noStroke();
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fill(255);
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frameRate(30);
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}
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float angle;
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float cosine;
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float jitter;
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public void draw()
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{
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background(102);
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if(second()%2 == 0){
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jitter = (random(-0.1f, 0.1f));
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}
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angle = angle + jitter;
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cosine = cos(angle);
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translate(width/2, height/2);
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rotate(cosine);
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rectMode(CENTER);
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rect(0, 0, 115, 115);
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}
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static public void main(String args[]) {
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PApplet.main(new String[] { "Rotate" });
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}
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}
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