Computer Graphics

For this week’s assignment we were asked to recreate one of the computer graphics from Computer Graphics and Art Magazine.

I looked at Hiroshi Kawano’s prints:

and made this simplified version that changes with a click:

Here’s how it looks like:

and here’s the code:

float y = 60;
float amplitude = random (30, 10);
float steps = 15;
float timeSteps = 0.01;
float versatz = 10;
float sw = random (0.5, 2);
float strokeAlpha;
int margin = 30;
boolean doReDraw = true;
void setup ()
{
  size (800, 700);
  smooth();
}
void draw ()
{
  if (doReDraw == true)
  {
    background(255, 0, 255);
    y = random (80, 100);
    while (y < height+45)
    {
      setRandomValues ();
      drawLines();
      y+= random (20, 35);
    }
    drawMargin();
    doReDraw = false;
  }
}
 
void setRandomValues ()
{
  noiseSeed ((int) random (100));
  sw = random (20, 2);
  steps = random (sw*2, 6);
  amplitude = random (40, 50);
  timeSteps = random (0.1, 0.05);
  versatz = random (-100, 200);
  strokeAlpha = random (-200, 200);
}
void mousePressed ()
{
  doReDraw = true;
}
void drawLines ()
{
  noFill ();
  strokeWeight (sw);
  float noiseValue;
  float x = -abs (versatz);
  float time = 0.0;
  while (x < width + abs (versatz))
  {
    noiseValue = y - noise (time)*amplitude;
    strokeWeight (random (sw*0.5, sw*1.2));
    stroke (random (strokeAlpha*0.8, strokeAlpha));
    line (x, noiseValue+3, x + random (versatz*0.9, versatz), noiseValue+3+height);
    x+= steps;
    time += timeSteps;
  }
}
void drawMargin ()
{
  noStroke();
  fill (255, 0, 255);
  rect (0, 0, width, margin);
  rect (0, height, width, -margin);
  rect (0, 0, margin, height);
  rect (width, 0, -margin, height);
}