/** Returns > 0 if the points are a counterclockwise turn, < 0 if clockwise, and 0 if colinear. */
private float ccw(float p3x, float p3y)
{
FloatArray hull = this.hull;
int size = hull.size;
float p1x = hull.get(size - 4);
float p1y = hull.get(size - 3);
float p2x = hull.get(size - 2);
float p2y = hull.peek();
return((p2x - p1x) * (p3y - p1y) - (p2y - p1y) * (p3x - p1x));
}
/** Removes from this array all of elements contained in the specified array.
* @return true if this array was modified. */
public bool removeAll(FloatArray array)
{
int size = this.size;
int startSize = size;
float[] items = this.items;
for (int i = 0, n = array.size; i < n; i++)
{
float item = array.get(i);
for (int ii = 0; ii < size; ii++)
{
if (item == items[ii])
{
removeIndex(ii);
size--;
break;
}
}
}
return(size != startSize);
}
