How to make a dynamic block that will automatically add hiding lines from the other dynamic block that is under?

[damielcruz150]

How to make a dynamic block that will automatic hide the lines from the other dynamic block that is under?

I have many blocks going X and Y direction some of them cross between each other I been using the wipeout function in the dynamic blocks and add the hiding line where they cross each other , to shown that one is under or above from each other, but it consumes time adding the lines when you have a lot of them, 

I been searching this idea, I found some old AutoCAD forum where they were talking about this but is back to 2005 but some of the links are broke and could not found more information about it. 

I know you can create multiple block visibilities with hidden or not hidden sections, add hatch, wipeout and etc. 

I was wondering if this can be done automatically depending the block position if is above or under the other block.

I was wondering that now in 2022 this idea will be possible to do?

I have attached a file below for reference. 

 

[thomas_schlüssi]

You could simply deposit a hatching with the color 255 in the dynamic block (then you won't see it when you print it out) and then you can use the drawingorder to control which block is at the top.

[h_s_walker]

As @thomas_schlüssi has said you can use a solid hatch with true colour 255,255,255. Normal colour 255 does show slightly you need to use true colour 255,255,255.

Or you could use a wipeout in your block and send it to the back of the other items in the block.

The advantage of using a wipeout is it won't "show" in the block so you won't have a massive area of white in your block.

[j.palmeL29YX]

That sounds like one of the basic functionality of AutoCAD Mechanical (AFAIR). Do you have access to this product? 

[damielcruz150]

Yeah @thomas_schlüssi  As I said in my post,

I know you can use hatch or Wipeout but is not what I am looking for, because if one of those objects is under the other object you still need to add the hiding line manually. 

As @j.palmeL29YX  Said this is a function available in AutoCAD Mechanical, But I was wondering if this can be also done in regular AutoCAD.

[damielcruz150]

Yeah  @h_s_walker  As I said in my post,

I know you can use hatch or Wipeout but is not what I am looking for, because if one of those objects is under the other object you still need to add the hiding line manually. 



As @j.palmeL29YX  Said this is a function available in AutoCAD Mechanical, But I was wondering if this can be also done in regular AutoCAD.

[damielcruz150]

Yes for my understanding this can done in AutoCAD mechanical,
But I was looking to probably could be done in regular AutoCAD

[h_s_walker]

Do the blocks always stay the same width?

If they do two visibility states with a movable set of hidden lines should do it.

[damielcruz150]

That is what I been doing lately in this case since this shape keep the same with.

But there are some times when the shapes are wider or are triangles circles etc. different types of shape. 

Here are some gif of the old website that I found they made it work but with lines there was another blog where they were using dynamic blocks but the link of the website is broke. 

  

[j.palmeL29YX]

If you had a 3D model (e.g. 3DSolids or 3DFacces at different Z-Level) that would not be a problem in the plain AutoCAD too.

For a pure 2D drawing I don't see any way to update hidden lines dynamically.

[damielcruz150]

@j.palmeL29YX I will give a try to this and let you know. 

Thank you.