/** * Letters.  *  * Draws letters to the screen. This requires loading a font,  * setting the font, and then drawing the letters. */PFont fontA;void setup() {  size(200, 200);  background(0);  smooth();  // Load the font. Fonts must be placed within the data   // directory of your sketch. A font must first be created  // using the 'Create Font...' option in the Tools menu.  fontA = loadFont("CourierNew36.vlw");  textAlign(CENTER);  // Set the font and its size (in units of pixels)  textFont(fontA, 32);  // Only draw once  noLoop();} void draw() {  // Set the gray value of the letters  fill(255);  // Set the left and top margin  int margin = 6;  int gap = 30;  translate(margin*1.5, margin*2);  // Create a matrix of letterforms  int counter = 0;  for(int i=0; i<margin; i++) {    for(int j=0; j<margin; j++) {      char letter;      // Select the letter      int count = 65+(i*margin)+j;      if(count <= 90) {        letter = char(65+counter);        if(letter == 'A' || letter == 'E' || letter == 'I' ||           letter == 'O' || letter == 'U') {          fill(204, 204, 0);        }         else {          fill(255);        }      }       else {        fill(153);        letter = char(48+counter);      }      // Draw the letter to the screen      text(letter, 15+j*gap, 20+i*gap);      // Increment the counter      counter++;      if(counter >= 26) {        counter = 0;      }    }  }}