Line construction

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  • Line construction

    I'm trying to construct a line perpendicular to a already created line thru a point.


    LIN40 =FEAT/LINE,RECT,UNBND
    THEO/-49.67,24.162,-12.904,0.3015113,-0.904534,0.3015113
    ACTL/-49.405,24.242,-12.558,0,0,1
    CONSTR/LINE,PRTO,LIN39,PNT135,0

    The very last option is the length of the line. I need to change it from "0", but it will not let me. Am I still asleep and missing something?

    I'm using 3.5 mr1.

  • #2
    The point you are constructing thru is or is not on the line you already have? If it is then create a generic point with the same X & Y values and a different Z value. In either case I would make sure I was in the proper workplane, then contsruct>line>perpendicular>select point>select line>create. That should do it. HTH
    sigpic"Hated by Many, Loved by Few" _ A.B. - Stone brewery

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    • #3
      Originally posted by Wes Cisco
      The point you are constructing thru is or is not on the line you already have? If it is then create a generic point with the same X & Y values and a different Z value. In either case I would make sure I was in the proper workplane, then contsruct>line>perpendicular>select point>select line>create. That should do it. HTH
      I could do that if I align to something first, "and then yes you are right it would work" but shouldn't I be able to enter a length for my line?

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      • #4
        Originally posted by Tested
        I could do that if I align to something first, "and then yes you are right it would work" but shouldn't I be able to enter a length for my line?
        You aren't aligned? Is this line to be part of your manual alignment? I have something running and can't look at the moment, but I think if you use the help menu (F1) with the contstruct line window open, it covers length. HTH
        sigpic"Hated by Many, Loved by Few" _ A.B. - Stone brewery

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        • #5
          Originally posted by Tested
          I could do that if I align to something first, "and then yes you are right it would work" but shouldn't I be able to enter a length for my line?
          Why do you need a length for the line?

          I am not sure there is a proper workplane. If I understand correctly you have a line (line 1)and a point. If the point is not on line 1 then you can create a line (line 2) from the point to line 1 perpendicular to line 1 using the method Wes suggested.

          If the point is located on line 1 then I believe you do not have enough information to create a line (PC-DMIS doesn't know what vector to use and length will be 0) If this is the case do an alignment and create an offset point not located on line 1.

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          • #6
            I have just had a look at the help menu, and discovered that in my earlier post I listed the features to be selected backwards. The way construct perp line works is the line will be constructed perp to the first feature selected, thru the second feature selected. So I should have a said "select the line, then select the point". We appologize for any inconvienece.
            sigpic"Hated by Many, Loved by Few" _ A.B. - Stone brewery

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            • #7
              If you ever need to control the length of a line go to the top line in your code and put your curser on the unbnd part change it to bnd.Then you should be able to change the length of the line.

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              • #8
                Wes,

                Yes I'm aligned to the part -A-, -B-, -C-, but not to the features. If I just create a generic with a new Z : i.e. Z 10mm that is not going to give me anything I can use. That what I was refering to in the Quote.

                As for Quote #6 you can see that is how I have already done it. A line with a length of zero.

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                • #9
                  Originally posted by Tested
                  Wes,

                  Yes I'm aligned to the part -A-, -B-, -C-, but not to the features. If I just create a generic with a new Z : i.e. Z 10mm that is not going to give me anything I can use. That what I was refering to in the Quote.

                  As for Quote #6 you can see that is how I have already done it. A line with a length of zero.
                  I think Jim has your answer.
                  sigpic"Hated by Many, Loved by Few" _ A.B. - Stone brewery

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