Anuncios

The Autodesk Community Forums has a new look. Read more about what's changed on the Community Announcements board.

Lining up (poly)lines using another block corner as a reference

Anonymous

Lining up (poly)lines using another block corner as a reference

Anonymous
No aplicable

I'm using AC to manage a cable map in one particular drawing. This drawing consists essentially of a bunch of blocks and poly lines. I have blocks that represent ports, and another block that represents a device. The device block consists of multiple port blocks and that combination is, in turn, wrapped up into a block of it's own.

I start a pline, connect it to the port block, wrap it around the hard lines of the port block, the device block and out to another block representing another device. I would start another pline on a port block adjacent to the first one and overlap the first pline everywhere else except the beginning and the end. This lets me highlight each pline individually (or multiple at the same time) and see the 'path' that I've created between devices. This is my cable map.

After a while, what starts to happen is that additional overlapping plines don't actually overlap perfectly along all vertexes. A vertex would usually be created when a 'cable' would need to go off in a different direction. I have the snapping turned on, so I would expect the vertex on the second pline to perfectly snap to the vertex of the first as it overlaps, the third to perfectly snap to the vertex of the second, the fourth to the third, etc.

This doesn't seem to be happening, so I'm wondering if I'm doing something wrong with the snapping, if this is expected behaviour, or if there is a way to tell multiple vertexes to all nicely line up on a corner of a block.

Hopefully this makes some sense :cara_con_una_leve_sonrisa:

Thanks in advance!

0 Me gusta
Responder
Soluciones aceptadas (1)
821 Vistas
6 Respuestas
Respuestas (6)

maxim_k
Consultant
Consultant
Hi,

Could you illustrate somehow - screenshots, drawings - what do you want to achieve exactly?

Maxim

Do you find the posts helpful? "LIKE" these posts!
Have your question been answered successfully? Click 'ACCEPT SOLUTION' button.


Maxim Kanaev
Architect
MARSS

MacACAD | Linkedin

Etiquette and Ground Rules of Autodesk Community
0 Me gusta

Anonymous
No aplicable

So in the image below, there are two plines.  Then both go off to the right side of the drawing, which isn't illustrated here. However, you can see where they intersect in the upper-left quadrant.

 

Screen Shot 2015-03-08 at 11.27.59 AM.png

 

Below is a zoom of that intersection.  You can see that the two plines don't actually interesect perfectly.  This is what I'm tryint to fix.  There is a mess of other plines mixed up in there too.  They are all of the other polylines that are supposed to intersect at the same point that don't line up either.  The intersection point is always a corner of a block, or 2 line within a block.  I'm not sure if it's a setting where I can adjust the snapping to snap only to blocks and not plines or something else.

 

Screen Shot 2015-03-08 at 11.29.02 AM.png

 

I've attached the drawing too, if looking at it hands-on will help at all.

0 Me gusta

maxim_k
Consultant
Consultant
I see your problem now, but I'm afraid you can not force endpoints of polylines to snap to the corners of the objects composing the block, because AutoCAD provide object snap regardless of whether this is the end point is inside a block or not.

So the only one way to fix the problem is to MANUALLY move all polyline vertices using grips to the desired corner of the block. You can simplify the task by hiding polylines you already aligned with ISOLATEOBJECTS command.
If you are using full (not LT) version of AutoCAD you can also try to use AUTOCONSTRAIN command with specific settings, but it is also not a trivial task in your case.

Maxim

Do you find the posts helpful? "LIKE" these posts!
Have your question been answered successfully? Click 'ACCEPT SOLUTION' button.


Maxim Kanaev
Architect
MARSS

MacACAD | Linkedin

Etiquette and Ground Rules of Autodesk Community
0 Me gusta

Anonymous
No aplicable
Solución aceptada

Thanks.  I was able to get things a little closer by editing drafting settings and set object snap mode for Endpoint and Midpoint, only and re-do everything. This seems to have helped, but now I have other issues, but that's another topic :cara_con_una_leve_sonrisa:

 

Thanks! :cara_con_una_leve_sonrisa:

0 Me gusta

Victoria.Studley
Autodesk
Autodesk

Hi Jason,

 

I'm glad to hear you were able to find a way to accomplish this. It also looks like most of the objects in your drawing are on the 0 layer. You could reduce the complexity around intersections like this by placing objects on separate layers, to be toggled on and off as needed. You could also use QSELECT to select a filtered set of objects and isolate them to make them easier to work with.


Victoria Studley
Principal Experience Designer - Fusion Configurations
Join us in the Fusion Insider Program
Fusion Learn & Support | Fusion Documentation
0 Me gusta

Anonymous
No aplicable

Those are both very interesting ideas, Victoria.  I will give those both a try and see which ones integrates best with my current workflow.

 

Thanks!

0 Me gusta