'宣言 Public Shared Function pointSub( _ ByVal a As IPoint, _ ByVal b As IPoint _ ) As Vector2d
'宣言
Public Shared Function pointSub( _ ByVal a As IPoint, _ ByVal b As IPoint _ ) As Vector2d
public static Vector2d pointSub( IPoint a, IPoint b )
Vector2d クラス Vector2d メンバ