Tween::tick()
Description
Advances the tween by one 'tick' which is defined by the duration of the tween. This function is usually called automatically, however when using Tween in an advanced way, by passing null the first attribute in it's constructor, you must explicitly call tick() at every frame. This is specifically useful for animation within seperate threads.
Example
import megamu.shapetween.*;

Tween ani;
void setup(){
  ani = new Tween(null, 2);
  ani.start();
}

void draw(){
  background(255);
  ani.tick();
  ellipse(ani.time()*width, ani.position()*width, 4, 4);
}
Syntax
tick()
Related
time()