Spline Problem

[sati464]

Hi sir,

 

Please find the attached picture.

 

We are having a project for waterjet cutting of aluminium plate profile is as shown. This drawing is supplied by customer. while selecting, the profile showing multiple points. how to convert this into single line.

Our Waterjet cutting software is not reading this drawing and showing error.

 

Please help me

[Quik&Easy]

One of the first things I would try it to ask your client to backsave it to a very early DXF, like R12 or 14, some version before splines existed. Tell him you need arcs and lines, no splines. I've had better results with the client doing the work with his original drawing and program.

[Dana W]

Those objects are not made up of splines, they are polylines.

[Cad64]

I got an email this morning regarding this issue. Not sure why he posted here and then felt he needed to email me as well? Anyway, he didn't mention whether they were splines or polylines, which is kind of important, but I assumed they were polylines and pointed him to the lisp routines below.

 

PLDIET: http://cadtips.cadalyst.com/linear-objects/polyline-diet

WEED2: http://cadtips.cadalyst.com/linear-objects/weed-r13-polylines?print=1

 

If they are splines, they can be converted to polylines with the routine below.

 

SPLINE-TO-PLINE: http://cadtips.cadalyst.com/curved-objects/splines-plines

[sati464]

Hi sir,

 

I've loaded both the Lisp routines, but still it is not changing

 

I've run the PLD command and selected the lines but it is not changing,

 

Please help me how to convert sir. I sent you .dwg file to your email for your reference

[Cad64]

I ran the PLDIET routine on a few of the polylines in your drawing and it works fine. I'm not sure why it's not working for you?

[sati464]

Hi sir,

 

Please give me detail steps how to run the command

 

Thanks

[sati464]

Hi,

 

problem shape is completely changing,

 

Shape should not be changed

[Cad64]

Please give me detail steps how to run the command

 

It's pretty self explanatory. Just watch your command prompt.

 

Run the command

Enter the maximum distance between points - (I entered 2.0)

Enter the maximum change in direction to straighten - (I entered 2)

Choose to Straighten or Retain arc segments - (I chose to retain arc segments)

Select a polyline and then hit Enter

 

That's pretty much it.

[sati464]

Hi sir,

 

Thanks for your reply

 

still it is showing points

[Cad64]

Yes, of course it's showing points. Points are what defines the shape of a polyline. The purpose of the PLDIET routine is to eliminate a lot of the excessive points, not get rid of all the points. What is it you're expecting?

[sati464]

Thanks for your reply,

 

I will try this in my waterjet software

 

Thanks