[Plugin] 2dBoolean ver1.3.1 beta UPDATE 20 dec 2013

jolran · 31 Aug 2011, 21:59

He he! No worries

Sometimes when I reread my posts I wonder what the heck I was talking about. That's why I post so many pictures To clear things up.

This new code of yours look very nice. Can't wait to test it out.

@unknownuser said:

tedges.uniq!

Haven't seen that command before? To remove duplicates? Need to read more about pure Ruby...

@unknownuser said:

Once that's all done we can worry about making the group into the gluing/cutting component, with corrected axes as before...

I was thinking of putting in the option to make group instead of component, should one wish. Could be useful if the user only has edges with no faces.

Thanks a lot for your help, TIG!

jolran · 1 Sept 2011, 06:41

I'm having trouble with this part of the code. Maybe should add some parameters to it?

faces.each{|gface|
pt=gface.bounds.center.project_to_plane(face.plane)
if face.classify_point(pt)==Sketchup;;Face;;PointOutside
tedges << gface.edges
gface.erase!
end
}

If you look at the picture, you will see that it might not work in all cases with that code.
Especially when having big faces.

In the earlier posts I was trying to figure out a way to erase faces more selectively.
By using IF the FACES center==HOLES center >> erase.faces! (Simplified code)
However, when I did that, sometimes there where errors. Or faces that would not get deleted.

TIG · 1 Sept 2011, 09:58

The .flatten! combines nested arrays
The .uniq! removes duplicates
Also [not applicable to THIS tool] .compact! would remove 'nil' array elements, or .sort! puts the list 'in order'...

Now to the chase.........
I also see this 'unexpected' possibility of faces we want to keep being false-flagged as 'holes'.
So we need to trap for real 'hole' faces - the outer_loop edges will always have two faces...

faces2go=[]### rather than erase as we go we'll collect them...
faces.each{|gface|
  ### we skip the gface IF it's NOT a 'hole'
  ### just 1 one-faced edges is enough for != hole
  hole=true
  gface.outer_loop.edges.each{|e|
    if e.faces.length==1
      hole=false
      break
    end
  }
  next if not hole
  ###
  pt=gface.bounds.center.project_to_plane(face.plane)
  if face.classify_point(pt)==Sketchup;;Face;;PointOutside
    tedges << gface.edges
    faces2go << gface ### save them up
  end
}

THEN erase_entities on faces2go and then erase! any of the tedges that don't have a face...

jolran · 1 Sept 2011, 13:01

@unknownuser said:

The .flatten! combines nested arrays
The .uniq! removes duplicates
Also [not applicable to THIS tool] .compact! would remove 'nil' array elements, or .sort! puts the list 'in order'...

Great to know. Will be useful.

Your code works! Almost

Like with the method I used before(face.clone holes.centers), I'm experiencing some faces don't get erased. (Having a model that look like a swiss cheese)

I wonder why this happends. Your code should be working...

For ex. I run the plugin once. Maybe 3 faces are not deleted but the edges are trimmed to fit. I run the plugin again with the component selected, then it is OK!

It is like it needs another rescue operation? Or maybe run the last command twice? Seems excessive..

I will check my code as well. Been moving snippets back and forth, it need some cleaning up.

And another thing. Was it GO for NOT using faceclone? Intersect with SS or Glue face?
I havent implemented that yet, still using face.clone. Shouldent matter in this regard...

jolran · 1 Sept 2011, 15:02

Think it is ok...

Breaks sometimes, but only if using a simple squarish component. One have to consider what this tool is going to be used for.

TIG · 1 Sept 2011, 15:10

Try intersecting the group.entities with the face.edges+[face] twice ?
Will make it slightly slower... BUT it might fix the potential glitch ??

jolran · 1 Sept 2011, 15:34

Yes TIG, I think you are on the right track there! Good thinking.

I was about to report that intersection is not working properly. One cannot erase a face if it can't be selected

This can be due to my code being a bit shabby at the moment, moving stuff back and forth as mentioned.

I will "clean it" and report back later.

jolran · 1 Sept 2011, 23:27

2 intersection gave a big improvement! Not 100% accurate, but I think it's good enough. One can force it by selecting the component and running the plugin again. It almost always sort out the fuzz, then.

Still intersecting with face.clone. Had some problem with intersecting with Sketchup.active.model selection...Expecting entitiy something..

Speed is better, even with 2 intersections

Did a test with a "heavy" component, ver 1.1 VS current dev.code. VER 1.1: 41.483 seconds. current dev.code: 4.278 seconds

Do we move forward, TIG? Or delve deeper in this problem, to make perfection?

jolran · 2 Sept 2011, 09:16

Ok, I have put out the new version 1.2 for testing. So you have something to play with this weekend.
It should be an improvement..

KEEP THE OLDER VERSION AT HANDS! I won't be able to fix issues this weekend

Thank you TIG for all the help.

I haven't optimized the iterator exactley as TIG suggested, so that can be improved...

There are more issues to deal with later on.. But let's not spoil all the fun.

andybot · 7 Oct 2011, 17:27

Joel, thanks so much for this plugin!! I have 2d elevations that I needed to glue to a massing, and this works absolutely perfect for my needs. Good work!
Andy

AcesHigh · 7 Oct 2011, 22:40

can anyone check if this pluging works with meshes?

when importing several pieces from GoogleMaps, the pieces usually end overlapping each other, causing texture errors.

You cant use 3D boolean because obviously, meshes, are not solids.

So I would usually "zorro" the different meshes, and cut the parts that overlap. Obviously, a HUGE work when you are dealing with dozens of different GoogleEarth imported meshes. If this plugin works with those, it will be great!

jolran · 8 Oct 2011, 19:12

Hey, I missed some posts in here!

Andybot. I'm glad someone have use for this plugin! Appreciate it!(we all know TIG's part of this of course)

AcesHigh.

I've seen your request in other post regarding this subject. Like I said. I think it lies more in the 3d domain, since the surfaces are not flat.

IF the intersecting geometry would be flat at intersectionpoints, 2dBoolean should activate. But I see your case you would need a subtraction-algorythm.

At this point 2dboolean only subtracts geometry outside the face it's lying on(or selected face).

What you are asking for is really needed, and I will see what can be done about that in the future. I'm kinda busy at the moment.

Have to deal with Hatchfaces webdialog, which unfortunaly proves very difficult.
I thought I only had to learn Javascript, HTML, CSS and JQUERY . But there is need for some JSON and maybe AJAX as well. Kinda much required to make a simple dialog if you ask me.

jolran · 29 Nov 2011, 14:32

Nice update.

But! If you are gonna further developp this tool, and display it in this thread with my icons included. Please don't scramble the code, so other can benefit from your code like you did on mine and Tig's.

Besides your plugin will be lost in this thread posting it here.

Best regards.

Juantxo · 29 Nov 2011, 15:43

Sorry, but actually I prefer the code scrambled. The code is not very optimized because I did it to translate to C after.
I don't use any line of your code. I used a simplicans planar theory. (I taked your one icon, feel free of use my icons)

Best regards

jeff hammond · 29 Nov 2011, 15:48

@juantxo said:

Sorry, but actually I prefer the code scrambled. The code is not very optimized because I did it to translate to C after.
I don't use any line of your code. I used a simplicans planar theory. (I taked your one icon, feel free of use my icons)

Best regards

watch out, the 's around here will unscramble your code and make sure you're telling the truth

jolran · 29 Nov 2011, 16:28

@unknownuser said:

I don't use any line of your code

Ok. If you say so.

@unknownuser said:

I taked your one icon, feel free of use my icons

That's ok. I don't mind that. 2 min PS for me.

@unknownuser said:

Sorry, but actually I prefer the code scrambled

Ok, about that. I find it somewhat strange to post stuff for free, scrambled. thats not very helpful for other programmers.. Personally I rather tell to much then nothing at all.

Juantxo · 25 Jan 2012, 16:08

Actually I'm working in 2D boolean of polygons in Sketchup because I need for other stuff. I did this plugin using simplicians theory.
May be could be usefull for someone.

You need to select two groups with a general planar polygon.
General planar polygon = A single polygon or a polygon consisting of a set of non-intersecting single polygons.

DOWNLOAD 2d_simplex_bool.rbz

jolran · 20 Dec 2013, 16:03

New version 1.3.1 added:

http://sketchucation.com/forums/viewtopic.php?f=323%26amp;t=39661

Whole lot is rewritten so there may be lot of things broken. I suggest a lot of testing and report back bugs and wishes

Intersections should now be a Little quicker. And some new stuff as well.

Make sure to read the manual in second post.

Will try and add to pluginstore later.

jolran · 20 Dec 2013, 17:31

Manual

Since ver 1.3.1

manual_2dBoolean.zip

TIG · 21 Dec 2013, 14:31

I added it to the SketchUcation PluginStore for you...
http://sketchucation.com/resources/pluginstore?pln=2dBoolean
You might want to edit the listing and add documentation, release notes etc...