Add a face to my edges

nics

Hi I opened some dxf file containing router profile but I'm unable to create a face even if the edges seem to be all closed and plane. What I'm doing wrong ?

thanks

thomthom

Are the edges too small? SketchUp has problems with too small models, faces won't be created.

nics

maybe, here's one ... hmm which file extension is allowed here ? I can't upload DXF file.

thomthom

zip it

nics

ok so here the zip taken from this site: http://www.woodworkersworkshop.com/cadfiles/cadsyms.htm

pineprof.zip

honoluludesktop

When you import a model, it becomes a SU component made up mostly of edges, and faces. Typically CAD lines and curves are imported as edges. Only CAD 3d faces (closed polylines) import as edges and faces. Explode the component and draw a new line (edge) over any existing line, and if the model has no flaws the surface will appear.

nics

ok thanks but I wasn't able to do that earlier. Now it's ok .. don't know what I did wrong. Anyway

is there any example somewhere that load a dxf file and take the component inside in ruby script ? I wanna be able to do this in my script.

thanks again !

TIG

You'll need Pro ?
http://code.google.com/apis/sketchup/docs/ourdoc/model.html#import
Sketchup.active_model.import(path_to_file.dxf, false)

nics

is there any way to turn it into a surface without redrawing one of its edges ? thanks

honoluludesktop

Should work, I imported the first dxf file in your folder (ExtJamb.dxf), exploded the component, then turned it into a face.

honoluludesktop

You could ask me to do it for you at $1.00 per byte per file. But seriously, any line touching any entity will do it, or you could write a ruby, but running it that would take as much time as inserting the line. Unless you batch it. Exactly what is it that you want to accomplish? If its simple, maybe Chris or TIG can bang one out for you.

nics

no don't worry, I was just wondering if there was other way of doing it ...

its gonna be in my scrip ... what I wanna do is to load the dxf file on the fly, place the profile inside just beside a door that I created on the fly and then do a followme around it.

TIG

If you import the dxf you should get a component named after the dxf file - e.g. "myfile.dxf".
Let's assume you have a name as name="myfile.dxf" ...
You can find that in

defn=nil
model.definitions.each{|d|(defn=d;break)if d.name==name}

In passing - you can also insert or manipulated instances of that definition...

tr=Geom;;Transformation.new(Geom;;Point3d.new(0,0,0))
inst=model.active_entities.add_instance(defn, tr)

We have found the definition [ defn] so we can now change it's entities...

defn.entities.to_a.each{|e|e.find_faces if e.class==Sketchup;;Edge}

Now all of your edges that can have faces should have got them.
If you want the faces to look 'up' [SUp always makes faces 'down' when z=0 !] use this...

defn.entities.to_a.each{|e|e.reverse! if e.class==Sketchup;;Face}

Jean Lemire

Hi folks.

Maybe this trick is a bit off topic and well known to seasonned SU users, especially those that are at the level of writing scripts, but it may help newbies reading this thread.

To be able to fill many shapes in one operation, see attached SU file for ideas.

Filling many shapes in one operation.skp

nics

Thanks for all .. it works fine but my transformation doesn't seem to work .. what I did wrong ? thanks


require 'sketchup.rb'

model = Sketchup.active_model

Sketchup.active_model.import("G;/download/installation temporaire/SU-Ruby/pineprof/Wm41.DXF", false)

name="Wm41.DXF"
defn=nil
model.definitions.each{|d|(defn=d;break)if d.name==name}

tr=Geom;;Transformation.new(Geom;;Point3d.new(6,6,6))
inst=model.active_entities.add_instance(defn, tr)

#defn.entities.to_a.each{|e|e.find_faces if e.class==Sketchup;;Edge}

#defn.entities.to_a.each{|e|e.reverse! if e.class==Sketchup;;Face}

#new_transformation = Geom;;Transformation.new([20,20,20]) 
#inst.transform(new_transformation)

rv = Geom;;Vector3d.new(0,0,1)
inst.entities.transform!(Geom;;Transformation.rotation(Geom;;Point3d.new(inst.entities.bounds.center), rv, 45.degrees))

TIG

You want to transform the instance NOT it's entities ?
inst.entities.transform!(Geom::Transformation.rotation(Geom::Point3d.new(inst.entities.bounds.center), rv, 45.degrees))
should be
inst.transform!(Geom::Transformation.rotation(Geom::Point3d.new(inst.entities.bounds.center), rv, 45.degrees))
Probably a lot clearer to make tr=(Geom::Transformation.rotation(Geom::Point3d.new(inst.entities.bounds.center), rv, 45.degrees)
and then inst.transform!(tr) too...
If you want to 'transform entities' there use something like entities.transform_entities(entities_or_array_of_entities) method .
There's also a entities.transform_by_vector(array_of_entities, array_of_vectors) method...
These are useful foe move geometry and vertices etc inside a group's entities etc etc

nics

I want to rotate on the Component Instance since I want to retate the whole thing ... rotate entities would be if I want to rotate only part of the instance no ?

the rotate doesn't not work .. do I need to commit something ?

here's my code again thanks



require 'sketchup.rb'

model = Sketchup.active_model

Sketchup.active_model.import("G;/download/installation temporaire/SU-Ruby/pineprof/Wm41.DXF", false)

name="Wm41.DXF"
defn=nil
model.definitions.each{|d|(defn=d;break)if d.name==name}

tr=Geom;;Transformation.new(Geom;;Point3d.new(6,6,6))
inst=model.active_entities.add_instance(defn, tr)


rv = Geom;;Vector3d.new(0,0,1)
tr1=(Geom;;Transformation.rotation(Geom;;Point3d.new(inst.bounds.center), rv, 45.degrees))
inst.transform! (tr1)

TIG

rv = Geom;;Vector3d.new(0,0,1)
pt = Geom;;Point3d.new(inst.bounds.center)
tr = Geom;;Transformation.rotation(pt, rv, 45.degrees)
inst.transform!(tr)

Should work - note no space between .transform!(tr) whereas without the parenthesis it needs to be .transform! tr - the first way is recommended...
This should turn inst about its center 45 degrees ??
Test by adding 'puts ' in front of the variable setting line e.g. puts pt = Geom::Point3d.new(inst.bounds.center) and it prints the result in the Ruby Console - this lets you see what is getting set or error msgs...

nics

ok it works, my zoom was really high and my instance was out of my screen. Now I see the rotated ComponentInstance and the ComponentDefinition. I tried the remove the definition by doing defn.remove! but I have this exception : (eval):22:in `erase!': Cannot determine parent of entity

getting better .. ill try to figure out how to delete thanks for all appreciated

TIG

@nics said:

ok it works, my zoom was really high and my instance was out of my screen. Now I see the rotated ComponentInstance and the ComponentDefinition. I tried the remove the definition by doing defn.remove! but I have this exception : (eval):22:in `erase!': Cannot determine parent of entity
getting better .. ill try to figure out how to delete thanks for all appreciated

inst.erase! erases an instance.
group.erase! erases a group.
or to 'remove' a defn completely erase! all of it's entities inside a start_operation..commit..