Dave Blandston <nomail@nomail> wrote:
>    #local Theta = degrees (atan (Point2_Macro.y / Point2_Macro.x));
>    #local R1 = R2 * sin (radians (Angle2_Macro)) / sin (radians (Angle3_Macro));

  You have potential divisions by zero in these two lines, even for completely
valid parameters passed to the macro.

  The intersection point of two 2D lines is a basic geometrical problem which
can be solved without having to resort to trigonometry, and this solution
avoids divisions by zero. Try googling for "intersection of two lines".

-- 
                                                          - Warp

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