import peasy.*;

PeasyCam cam;

void setup2() {
  cam = new PeasyCam(this, 100);
  cam.setMinimumDistance(50);
  cam.setMaximumDistance(500);
  cam.lookAt(width/2,height/2 , 0, 100);
 }

 void lookat () {
   if (mousePressed) {
     if (mouseButton == RIGHT);
   cam.lookAt(posa.x,posa.y,0, 100);
   } else if (mouseButton == LEFT) {
     cam.lookAt(pos.x, pos.y, 0, 100);
   }
 }