Flip lines and arc

[BIGAL]

When using a linetype in this case a gas main, a line with G's in it

 

The lines can be reversed easily with lisp polyline etc but the arcs are a problem they often end up upside down still.

 

Anyone know a simple way to cure this ?

[YZ]

I don't know a simple way, but this is the only way I have found! (Bear in mind that I only have LT, and do not have a knowledge of LISP routines.)

 

The arc will display linetype text upside down, regardless of which end you start the arc from.

 

So I create a MIRROR of the arc along a known plane (eg 0° Ortho).

 

The WBLOCK to create the mirrored object as a block (which locks in arrow direction).

 

MIRROR command on the new block, through the same plane as the first time, will then get it back to the desired position and with the arrows in correct direction.

 

This probably will only be of use to you if you have a small number of arcs to reverse.

[chulse]

Convert the arcs to plines. Then proceed as usual...

 

I have a lisp that converts splines to plines also for the same reason...

[BIGAL]

Thank you Issac usually only have a few so that is a way around it. Very interesting when you explode it it goes upside down again.

 

I have tried on other occasions in lisp programs involving arcs to figure out exactly how Autocad draws an arc some work some don't.

[YZ]

I always assumed that you could build a linetype that has the characters upside down and then just substitute that for the arcs that are displaying incorrectly.

 

But I'm not proficient with linetypes yet - it's on my to do list.

[lnd svyr]

Simply genius. I am making duplicate linetypes for 180 degree versions so the text in the linetype is always readable. Of course, I'll have to manually convert each incorrectly reading line but it beats all the lost time I have spent on other ways. You'd think AutoCAD with all of their resources could start fixing simple things like this. Thanks.

[YZ]

Simply genius. I am making duplicate linetypes for 180 degree versions so the text in the linetype is always readable. Of course, I'll have to manually convert each incorrectly reading line but it beats all the lost time I have spent on other ways. You'd think AutoCAD with all of their resources could start fixing simple things like this. Thanks.

 

Does that mean you know how to make a linetype with text that displays upside down? If yes, could you explain how you do that?

[BIGAL]

Yes its easy when you make a line type with text in it you nominate an angle for the text so copy the line type rename it to say gasup just put the angle in in the units you draw in radians or degrees gas =0.0 gasup = 180 sorry not at work else would paste example.