the HYPE Framework / Joshua Davis

import hype.*;
import hype.extended.behavior.HFollow;

HFollow mf;
HRect  rect;

void setup() {
 size(640,640);
 H.init(this).background(#242424);
 
 rect = new HRect(100);
 rect.rounding(40).noStroke().fill(#ECECEC).loc(width/2,height/2).anchorAt(H.CENTER).rotation(45);
 H.add(rect);

 // Note: for HFollow we have the following constructors:
 // - new HFollow()
 // - new HFollow(float ease)
 // - new HFollow(float ease, float spring)
 // - new HFollow(float ease, float spring, HFollowable goal)

 mf = new HFollow().target(rect);

 // un/register this behavior from HStage
 // .unregister()
 // .register()
}

// There are also alternate ways of un/registering HBehaviors:

// H.addBehavior(mf);
// H.removeBehavior(mf);
// H.stage().behaviors().add(mf);
// H.stage().behaviors().remove(mf);

void draw() {
 H.drawStage();
}