/** * examines solute grid to determine where to move based on attraction/repulsion to/from a solute */ private void chemotax() { // 1) get the gradient--this will be the direction the particle // should move in or away from ContinuousVector direction = chemotaxSolute.getGradient2DNoZ(_location); if (repellent) { direction.turnAround(); } // 2) scale the gradient set the scaled gradient as _movement _movement = this.getScaledMove(_location, direction, distEachRun); }