function preload() {
  module1 = loadImage('data/01.svg');
  module2 = loadImage('data/02.svg');
}
pack as many cirlces as possible together

MOUSE
press + position x/y : move area of interest

KEYS
1                    : show/hide circles
2                    : show/hide lines
3                    : show/hide svg modules
arrow up/down        : resize area of interest
f                    : freeze process. on/off
s                    : save png