def DistanceFromFace(face_point):
"""
Calculates the distance projected in the ground from a face.
"""
vector = copy.deepcopy(face_point)
vector.z = 0.0
return vector_magnitude(vector)
def pose_at_distance(pose,distance):
"""
Returns a pose that has the same orientation as the original
but the position is at a distance from the original.
Very usefull when you want to mantain a distance from an object.
"""
unit_vector = normalize_vector(pose.position)
k = vector_magnitude(pose.position)
distance_des = k - distance
dist_vector = multiply_vector(unit_vector, distance_des)
new_pose = Pose()
new_pose.position = dist_vector
new_pose.orientation = pose.orientation
return new_pose
