/**
 * Save One Image
 * 
 * The save() function allows you to save an image from the 
 * display window. In this example, save() is run when a mouse
 * button is pressed. The image "line.tif" is saved to the 
 * same folder as the sketch's program file.
 */

void setup() {
  size(640, 360);
}

void draw() {
  background(204);
  line(0, 0, mouseX, height);
  line(width, 0, 0, mouseY);
}

void mousePressed() {
  save("line.tif");
}