demo/triangle.incenter.js
function setTarget(p) {
  if (!p) p = space.size.$multiply( Math.random(), Math.random() );
  timeInc++;
  target.p++;
  target.t = 0;
  target.vec = p;
}
function setTarget(p) {
  if (!p) p = space.size.$multiply( Math.random(), Math.random() );
  timeInc++;
  target.p++;
  target.t = 0;
  target.vec = p;
}
function setTarget ( p ) { if ( ! p ) p = space . size . $multiply ( Math . random ( ) , Math . random ( ) ) ; timeInc ++ ; target . p ++ ; target . t = 0 ; target . vec = p ; }
move a triangle's point to new position
move a triangle s point to new position