PerspectiveCamera.lookAt(Point3 center, Point3 lookAt, Vector3 up, num vertOpeningAngle, Vector2 _res)

Creates a new PerspectiveCamera. Calculates forward vector based on given look-at point.

Source 

PerspectiveCamera.lookAt(Point3 center, Point3 lookAt, Vector3 up, num vertOpeningAngle, Vector2 this._res) {
  this.forward = lookAt-center;
  _init(center, up, vertOpeningAngle);

  print("Created new PerspectiveCamera:");
  print(" - resolution: $res");
  print(" - center: $center");
  print(" - lookAt: $lookAt");
  print(" - up: $up");
  print(" - right: $right");
  print(" - topLeft: $topLeft");
  print(" - stepX: $stepX");
  print(" - stepY: $stepY");
}