composition_book.pde

//Tiny composition book cover generator
//Natalie Freed 2014
//Learned about using Perlin noise to make 2D textures from
//Daniel Shiffman's Nature of Code: http://natureofcode.com/book/introduction/

int labelCenterX, labelCenterY, labelWidth, labelHeight;
int labelMargin = 16;
int outlineMargin = 24;
int labelCorner = 10;
int lineMargin = 20;
int edgeBandWidth, textOffset, lineSpacing;
int lineXStart, lineXEnd, lineY;

void setup()
{
  size(800, 525);
  noLoop();
  
  PFont font = loadFont("Rockwell-20.vlw");
  textFont(font, 20);
  textAlign(CENTER);
  rectMode(CENTER);
  
  edgeBandWidth = width/12;
  labelCenterX = 3*width/4+edgeBandWidth/4;
  labelCenterY = height/3;
  labelWidth = width/4;
  labelHeight = height/4;
  textOffset = labelHeight/6;
  lineSpacing = labelHeight/8;
  lineXStart = labelCenterX-labelWidth/2+labelMargin+lineMargin;
  lineXEnd = labelCenterX+labelWidth/2-labelMargin-lineMargin;
  lineY = int(labelCenterY-textOffset+1.5*lineSpacing);
}

void draw()
{
  background(200);
  
  makeSome2DNoise();
  
  //edge band
  fill(0);
  noStroke();
  rect(width/2, height/2, edgeBandWidth, height);
  
  //label
  fill(255);
  rect(labelCenterX, labelCenterY, labelWidth, labelHeight, labelCorner);
  stroke(0);
  noFill();
  rect(labelCenterX, labelCenterY, labelWidth-labelMargin, labelHeight-labelMargin, labelCorner);
  rect(labelCenterX, labelCenterY, labelWidth-outlineMargin, labelHeight-outlineMargin, labelCorner);
  
  //label text
  fill(0);
  text("PROCESSING", labelCenterX, labelCenterY-textOffset);
  
  //blank lines on label
  line(lineXStart, lineY, lineXEnd, lineY);
  line(lineXStart, lineY+lineSpacing, lineXEnd, lineY+lineSpacing);
  line(lineXStart, lineY+2*lineSpacing, lineXEnd, lineY+2*lineSpacing);
  
  saveFrame("mini composition book " + day()+hour()+minute()+second()+".png");
}

void makeSome2DNoise() //use Perlin noise to generate cover pattern
{
  float noiseStep = random(0.05, 0.9);
  int notebookColor = color(int(random(0, 255)), int(random(0, 255)), int(random(0, 255)));
  float noiseLoc = 0;
  for(int i=0;i<height;i++)
  {
    for(int j=0;j<width;j++)
    {
      if(noise(noiseLoc) > 0.4) { stroke(notebookColor); }
      else { stroke(255); }
      point(j, i);
      noiseLoc+=noiseStep;
    }
  } 
}

void mousePressed()
{
  redraw();
}