/**
* Gets the face area
*
* @return face area
*/
public double getArea()
{
//area = (a * c * sen(B))/2
Point3d p1 = v1.getPosition();
Point3d p2 = v2.getPosition();
Point3d p3 = v3.getPosition();
Vector3d xy = new Vector3d(p2.x - p1.x, p2.y - p1.y, p2.z - p1.z);
Vector3d xz = new Vector3d(p3.x - p1.x, p3.y - p1.y, p3.z - p1.z);
double a = p1.distance(p2);
double c = p1.distance(p3);
double B = xy.angle(xz);
return((a * c * Math.Sin(B)) / 2d);
}
//--------------------------------OTHERS----------------------------------------//
/**
* Computes the distance from the line point to another point
*
* @param otherPoint the point to compute the distance from the line point. The point
* is supposed to be on the same line.
* @return points distance. If the point submitted is behind the direction, the
* distance is negative
*/
public double computePointToPointDistance(Point3d otherPoint)
{
double distance = otherPoint.distance(point);
Vector3d vec = new Vector3d(otherPoint.x - point.x, otherPoint.y - point.y, otherPoint.z - point.z);
vec.normalize();
if (vec.dot(direction) < 0)
{
return(-distance);
}
else
{
return(distance);
}
}
