How do I hide part of the arc passing into the rectangle of the door?

[Anonymous]

I created a simple dynamic door block and I am wondering how to make 'not visible' the part of the arc that passes within the rectangle of the door.

NOTE:  I understand that there may be a way to construct this dynamic block that makes hiding the segment of arc not necessary, and I welcome suggestions for that, HOWEVER, for this particular inquiry, just GENERALLY SPEAKING, I want to know how to do what I have indicated in the title of the post.

 

[Anonymous]

There are probably many different ways to do this.

I'm not sure of the best way but I have a "Mask" layer that I use for situations like this.

The screening under plot style table editor is set to 0 for this color.

So anything under this will not plot

Maybe you could just trim the arc in the original block definition? Unless this messes up after scaling.

[Anonymous]

Hello Josh, thanks for reply.

I am relatively new to AutoCAD and I looked in the Tool Palette, Architecture tab and noticed that their door is the same design as the one in my post, with the arc visible inside the rect of door.  Apparently considered an acceptable "imperfection" in exchange for simplicity and the fact that it is not really functionally visible when in use.  So I am not going to worry about it any more.

But I am still interested in how to hide such a geometry in general.  I will follow up on your suggestions.

I trimmed the arc and it does, indeed, mess up in the scaling.  Probably something to do with ARC to RADIUS ratio given a common CENTER.   Trig stuff.  

[Anonymous]

Yeah good ole trigonometry. lol.

I would agree that this line is acceptable since it is representing the path of the leading corner of the door.

We show this overlap at my full time job as well.

I am very OCD about the smallest things in my drawings though so I could understand why you would look for a solution to this. I like the mask layer method because it requires little effort after it has been applied to your blocks.

[Libbya · Accepted solution]

Typical drafting standards show the complete swing.  I think it is a drafting error to have the swing hidden where it interacts with the door given that the swing is not a physical object that would be visibly blocked by the door.  

[timothy_crouse · Accepted solution]

Have you tried converting the door polygon rectangle into a wipeout?

-Tim C.