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Thread: Make a line coincident (and follow) a Pline

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    Question Make a line coincident (and follow) a Pline

    I have a line I have made coincident to a pline with the intention of the line following the pline's varying shape. So far I am only able to make the line coincident with a segment of the pline, and not the entire pline. Has anyone experimented with something like this and found success?

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    Default Re: Make a line coincident (and follow) a Pline

    Trace command, or export as a WMF and re import

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    Post Re: Make a line coincident (and follow) a Pline

    I am not sure what the trace command is- I do not believe it is an acad command. I am not sure I understand your instruction.

    To be clear, this is the behavior I am trying to accomplish inside a dynamic block- I would like a line to stretch and shrink along the profile of a pline, as it moves up and down, perpendicular to the pline. Due to a lack of admin rights, I am unable to provide an example.

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    Default Re: Make a line coincident (and follow) a Pline

    Type in TRACE at the command line, and play with it, It creates a TRACE entity, which is not going to do what you want. Pretty much a legacy command from back when Acad was used for laying out printed circuit boards -- it created a line-like entity with width that would be filled with solder. predates plines if i recall correctly.

    I don't think a DB will get you where you want to go, it sounds like you want to vary the length and end point of a line that stays perpendicular to a pline -- probably could be better served with a custom lisp routine.

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    Default Re: Make a line coincident (and follow) a Pline

    Or a Mline

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    Default Re: Make a line coincident (and follow) a Pline

    Not dynamic blocks unless there are only a few consistent segments or patterns to choose from. I vote for a lisp routine that grabs entity data from the selected source objects and entmakes the resultant block. Or, just copy, explode, modify? Can't really help much without an example file to poke at. Constraints (not in dynamic blocks) may also prove to be part of a simple solution.

    Ron

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