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  1. #1
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    Default lisp for trimming/ breaking a polyline or line

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    Hi guys, just new to the autolisp world and would like to ask your assistance in making a lisp so it can be a basis for my future lisp programs.


    Here is the flow of the lisp.

    Overview: the lisp trims or break a polyline or a line a the point (midpoint) indicated by the user by a value specified by a user.
    The distance value indicated should be followed even if the polyline or line is angled.

    First: the user is asked of how much the value of the trim/ break to be done on the polyline or line.
    2nd : the user is asked to chose the point where the trim / break will be done.
    3rd: click the next point on the line or polyline or press esc to exit.

    Sample, I inputted 1000mm for the value and click at the midpoint of the polyline, the trim should be 500mm on both side of the polyline.
    As long as I don’t cancel, I will just continue to choose the next point to trim/ break.


    Thank you in advance and more power

  2. #2
    Luminous Being
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    The line is easy just pick your pt say center as part of this it returns the object via entsel so you can get start & end pts, get angle of line, do 2 quick polars and you have your break points.

    The pline a lot more complicated if you want it broken and pline section is short I am sure others will advise. 1 routine should do both objects. Ps I am interested in this also for something else to do with plines.
    A man who never made mistakes never made anything

  3. #3
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