public static Line FromPointTheta( Point point, float theta )
Public Shared Function FromPointTheta ( point As Point, theta As Single ) As Line
theta is the counterclockwise rotation from the positive X axis to the vector through the origin and normal to the line.
This means that if theta is in [0,180), the point on the line closest to the origin is on the positive X or Y axes, or in quadrants I or II. Likewise, if theta is in [180,360), the point on the line closest to the origin is on the negative X or Y axes, or in quadrants III or IV.