// In honor of Scotland's vote today, lets code a kilt!
// Based on code developed by Dundee's Christopher Martin (Twitter @sspog)
// Adopted by Deepak Kumar, Bryn Mawr College, September 18, 2014

void setup() {
  size(600, 400);
  smooth();
  background(255);
  noLoop();
}

void draw() {

  // Color of background of cloth
  background( #5F866C); 

  // specify stroke color and thickness
  stroke(#CEAE38);
  strokeWeight(2);

  /* OK, now try out different calls below so you can
   get a good idea here.
   
   First try this...
   drawColumn(50, 20, 5);
   
   Vary the 20, down to 5...
   Next, try this:
   drawRow(50, 20, 5);
   
   Try them both together. Now you have the bsics of the
   Kilt building process. Now turn it into a grid. Try this
   
   grid(10, 10, 50, 5, 4);
   
   More fun:
   Layer them, repeat as many of the following:
   stroke(#CEAE38);
   strokeWeight(2);
   grid(10, 10, 50, 5, 4);
   
   Change the grid cross, squares, etc.
   */
   
   
  //save( \"fileName.png\" );
}


void drawColumn(int xPos, int strokeHeight, int d) {
  for (int y=0-strokeHeight; y<height; y+=d) {
    line(xPos, y, xPos+strokeHeight, y+strokeHeight);
  }
} // drawColumn()

void drawRow(int yPos, int strokeHeight, int d) {
  for (int x=0-strokeHeight; x<width; x+=d) {
    line(x, yPos, x+strokeHeight, yPos+strokeHeight);
  }
} // drawRow()

void grid(int xPos, int yPos, int sqSize, int strokeHeight, int density) {
  // draw a grid (rows, cols) that cross at xPos, yPos sqSize apart
  // strokeHeight and density control the line thickness texture density
  for (int x=xPos; x<width; x+=sqSize) {
    for (int y=yPos; y<width; y+=sqSize) {
      drawColumn(x, strokeHeight, density);
      drawRow(y, strokeHeight, density);
    }
  }
} // grid()