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How do I get a line's Angle?

Rian

How to you get at the angle of a line in Ravel land? Here's a snapshot of what I am after. We need to make sure the line is around 30 degrees. i.e. Between MIN=29.9 and MAX=30.1

Parents

  • Thanks. Turned out just the angle function and that "normalized" principal_value function did the trick (which is good because I never could get that CREATE_VECTOR to work). Here's the complete code:

    (constraint MIN_ANGLE 29.9)
    (constraint MAX_ANGLE 30.1)

    (define PlatingTrace
      (select (mLine) line
        (and
          (layer? mLine, "SUBSTRATE GEOMETRY/UNITBOT_PLTG_RT") ; RT = Routed
          (length mLine) < 10000.0 ; Exclude main vertical line segment
         )
       )
    )

    ; Go 1000 out on the X axis but same Y axis so it is horizontal
    ; Yes end_point is the end of the line next to the middle vertical line

    (define BadAngles
      (select (mLine, mAngle)
        (transform (mLine) PlatingTrace
          (mLine, (abs (principal_value (angle mLine, (connecting_line (end_point mLine), (create_point 1000.0           (ycoordinate (end_point mLine))))))))
         )
         (or ; angle must be between 29.9 and 30.1 so errors are outside this range < 29.9 OR > 30.1
          (mAngle < (value MIN_ANGLE))
          (mAngle > (value MAX_ANGLE))
         )
       )
    )

Reply

  • Thanks. Turned out just the angle function and that "normalized" principal_value function did the trick (which is good because I never could get that CREATE_VECTOR to work). Here's the complete code:

    (constraint MIN_ANGLE 29.9)
    (constraint MAX_ANGLE 30.1)

    (define PlatingTrace
      (select (mLine) line
        (and
          (layer? mLine, "SUBSTRATE GEOMETRY/UNITBOT_PLTG_RT") ; RT = Routed
          (length mLine) < 10000.0 ; Exclude main vertical line segment
         )
       )
    )

    ; Go 1000 out on the X axis but same Y axis so it is horizontal
    ; Yes end_point is the end of the line next to the middle vertical line

    (define BadAngles
      (select (mLine, mAngle)
        (transform (mLine) PlatingTrace
          (mLine, (abs (principal_value (angle mLine, (connecting_line (end_point mLine), (create_point 1000.0           (ycoordinate (end_point mLine))))))))
         )
         (or ; angle must be between 29.9 and 30.1 so errors are outside this range < 29.9 OR > 30.1
          (mAngle < (value MIN_ANGLE))
          (mAngle > (value MAX_ANGLE))
         )
       )
    )

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