public Point projectPoint(Point point, Point normal, double d)
{
double t = (point.dotProduct(normal) - d) / normal.dotProduct(normal);
Point result = point.subtract(normal.multiply(t));
return result;
}
private Point projection(Point u, Point v)
{
Point result = null;
result = u.multiply(u.dotProduct(v)/u.dotProduct(u));
return result;
}