[Plugin] FreeDXF Importer

thomthom · 7 Jul 2011, 13:56

Does it handle units at all? Or does it assume inches?

TIG · 7 Jul 2011, 14:20

My importDXFtext.rb ideas could be cannibalized into this tool to add the DXF's text in 2d 3dText groups, using available fonts or defaulting [mine uses Arial.ttf if the font is not in one that's listed] - my tool also replicates the [M/D]text/attribute's coded-symbols, colors, size etc wherever possible - also you could easily add an attribute for the text's 'string'...

thomthom · 7 Jul 2011, 15:01

I managed to hack this plugin for my need. Placed Text objects. Then I could use them to extract their insertion points and move them to the height given in the text - resulting in a point cloud, which I used TIG's Triangualte Points (modification of Didier) to generate a terrain mesh.

phew

At least now I got an accurate terrain. Thanks for all your scripts.

TIG · 7 Jul 2011, 15:09

Ages ago I wrote an AutoLisp tool to run in your CAD DWG and read 'flat' spot-height pieces of D/Mtext and move them in the Z to suit their given 'elevation' taken from the text's string into a float, and also add a 'point' at the text's origin - you can then export those as a point-cloud DXF for use in your SKP... to meshify it...
If the lisp would be of any help let me know and I can PM it...

Jim · 7 Jul 2011, 21:36

@thomthom said:

I went looking at it to work out what it imported DXF TEXT entities as. Text entity in SketchUp?

Currently TEXT and MTEXT are imported as 3D text (but with zero thickness.) The Font defaults to low-quality Arial. Texts respect newlines, position, height, font (if installed?), bold, and italic styles. Roation is not yet complete. Tects color is always black for now.

I had planned an option to import text as SketchUp screen text. In fact that's the easiest way to import it and the most economical as far as geometry.

@thomthom said:

And/or when the text is imported as geometry, add the text value to an attribute so it can be read by other Ruby scripts.

Good idea - will implement.

@thomthom said:

Does it handle units at all? Or does it assume inches?

FreeDXF does not consider units at the moment, so every import would be considered as being in Inches.

driven · 11 Jul 2011, 02:07

hi Jim, here's a mac screenshot,

I've got an archive of these simple reduction gear dxf's and it opens them a threat...

it's particularly useful being able to specify circle and arc segment counts, the v7 SU importer bought these in a such low quality, I couldn't use them.

it splits out into layers, but doesn't group those items, I haven't read the script yet but is that addable?

i.e. each layers geometry is also a group so it doesn't stick on first opening with all layers on.

also does it do faces?, I'm not sure if this test file has any... a lot of them don't.

cheers

john

Jim · 11 Jul 2011, 21:52

@driven said:

it splits out into layers, but doesn't group those items, I haven't read the script yet but is that addable? i.e. each layer's geometry is also a group so it doesn't stick on first opening with all layers on.

Yes, I think it's addable. I was using SketchUp Pro's dxf importer as my example; which does not group geometry by layer. But it seems like a better way to import geometry seeing as cad layers are more like SketchUp Groups than SketchUp Layers. So would all entities in the group be on the cad layer, or just the group on the cad layer with the raw geom on Layer0?

@driven said:

also does it do faces?, I'm not sure if this test file has any... a lot of them don't.

Not really yet. It does import 3DFACE entities, but I think they are not common in dxf's.

I appreciate the feedback. (send test files.)

Humpmetwice · 12 Jul 2011, 01:31

By reading everything I'm not sure if I'm doing something wrong or its not able to import text yet? It would really be a helpful tool if it did!

Thanks Kurt

Jim · 12 Jul 2011, 07:22

Thanks Kurt. It should import text and mtext entities. I would be interested in testing your .dxf file, if possible.

Humpmetwice · 12 Jul 2011, 17:31

@jim said:

Thanks Kurt. It should import text and mtext entities. I would be interested in testing your .dxf file, if possible.

Hope this helps, I think its just the type of text we used but I'm not sure. I was thinking it was standard MTEXT but may have been wrong?

B05-7947EP.dxf

honoluludesktop · 12 Jul 2011, 18:30

I just accidentally discovered that you can drag and drop some dxf files into IE and it will open to view. Jim's reference file opens, but humpmetwice's doesn't. Is it a Acad created file?

Jim · 12 Jul 2011, 19:33

@honoluludesktop said:

I just accidentally discovered that you can drag and drop some dxf files into IE and it will open to view. Jim's reference file opens, but humpmetwice's doesn't. Is it a Acad created file?

@HDT - Do you have AutoCAD installed, or a dxf/dwg viewer that enables the browser to display them using a add-on? (My guess.)

@Kurt - Thanks. This is what I get when importing your .dxf. It looks mostly OK, except the texts are not rotated (which I am aware but haven't fixed that yet.)

honoluludesktop · 12 Jul 2011, 19:40

I have a old copy of volo, but it was a popup that prompted a activeX download to then open the dxf to view. Are they related?

Btw, Jim, do you know if the majority of the non text/dimension entities in your reference file are polylines?

Humpmetwice · 12 Jul 2011, 20:27

@jim said:

@Kurt - Thanks. This is what I get when importing your .dxf. It looks mostly OK, except the texts are not rotated (which I am aware but haven't fixed that yet.)

Far more than what I get! I think I could work with that if you would tell me the secret to what I may be doing wrong. Is it the text we use?
Thanks Kurt

driven · 12 Jul 2011, 21:58

when I first import and use zoom extents I get this

then in SU, I deleted the \A1; text, I did 'select-all' to changed the font to momo 12pt, moved a couple of overlaps and in 'parallel projection' & 'top view'
I get this.

the text is on Layer0
the model and dim lines are on the text layer,
and the dimensionline layer is empty

john
@Kurt hope you don't mind me testing your file, consistency helps debugging...

Jim · 12 Jul 2011, 22:21

@John - Select "No" for the Screen Text option to use 3D text (well, 3D in only 2D.)

Jim · 12 Jul 2011, 22:23

@unknownuser said:

@jim said:

@Kurt - Thanks. This is what I get when importing your .dxf. It looks mostly OK, except the texts are not rotated (which I am aware but haven't fixed that yet.)

Far more than what I get! I think I could work with that if you would tell me the secret to what I may be doing wrong. Is it the text we use?
Thanks Kurt

Just try the latest version. (This link is always the most recent.)

Jim · 12 Jul 2011, 23:02

@driven said:

the text is on Layer0
the model and dim lines are on the text layer,
and the dimensionline layer is empty

Yes, this is similar to what I get when using SketchUp's Pro dxf importer.

(added text rotation, btw in latest. v0.6.1)

thomthom · 22 Aug 2011, 09:19

I've been looking around at the various ruby based importers for SketchUp and I see that no one uses the Importer class. If this class is used the importer can be found in the native import list which would be very nice.
http://code.google.com/apis/sketchup/docs/ourdoc/importer.html

Dekker · 12 Nov 2011, 13:49

It looks like the "inputbox.rb" plugin is no longer found in bitbucket

Any alternates available?

EDIT: Never mind... Found it! For the reference of others, the source is located here: http://forums.sketchucation.com/viewtopic.php?f=323&t=19103&p=347871&hilit=+inputbox.rb+#p347871