Initializes this line to be passing through the given point, with the vector as
Tests on a per-component basis on the point and vector if this line is equal to
other with the toler
Normalize the vector of this line. If its magnitude is too small, it is set to
Sets this line to be the same as the given line.
Changes the point through which this line has to go.
Changes the direction of this line by setting to the normalized value of the