how to get a list of all faces with their backs facing the camera. PLEASE HELP
or even a list with all faces facing the camera

how make a window like the components window as an interface to represent a new class i made called Buildings

Great, it does the job for me.
Thanks again

Tig you are right, using AttributeDeictionary is the right way to go and does exactly what i need.
Thank you

There is a great tool in Sketchup tools called "Orient Faces" that its meant to turn all contiguous faces the same way as the one selected. Does anybody know how to invoke this tool in ruby script?
For example i can make a list of certain faces that I’m sure they are properly oriented and then get all other faces connected to these faces and have them oriented to the ones I’m sure off using this function

Is there a way to over right the face class and add more functions to it?
What I’m trying to do is add a Boolean attribute generically to the face class called looked_at.
So that when i do my calculations i can check this variable and see if that face was looked at or not yet

Hi All,
I have a model of 300 buildings. I’m trying to apply certain materials to some facades on the model. But some of the facades represented by faces are inside out. Each face in sketchup has two sides and some of the faces in my model have the back side facing outwards of the building.
My question is “Is there a code or a plugin to use to flip all the faces that have the back side facing the outwards at once?”

Thanks in advance

Hi guys,

i was looking so ways to identify buildings in sketchup. one of the ideas i was thinking of is to search for 6 connected faces.. not very sufficient it was a start.
any ideas to share??

Mission accomplished
Thanks to you all Geniuses

guys i think you are right, the hits array is empty. the ray isn't hitting any geometry. Still trying to find out why though

Tig it isn't working.
guys could u have a look at the code and tell me what do you think?

...*[snip]*... reposted [in later post](http://forums.sketchucation.com/viewtopic.php?f)

Error: #<NoMethodError: undefined method []' for nil:NilClass> C:/PROGRA~1/Google/GOOGLE~3/Plugins/Fire Arrows.rb:31 C:/PROGRA~1/Google/GOOGLE~3/Plugins/Fire Arrows.rb:7:in each'
C:/PROGRA~1/Google/GOOGLE~3/Plugins/Fire Arrows.rb:7
C:/PROGRA~1/Google/GOOGLE~3/Plugins/Fire Arrows.rb:3:in `call'

Sorry if i wasn't clear enough

Tig it isn't working.
guys could u have a look at the code and tell me what do you think?

require 'sketchup.rb'

UI.menu("PlugIns").add_item("Fire Arrows") {

ents = Sketchup.active_model.entities

Sketchup.active_model.selection.each do |e|
if e.is_a? Sketchup;;Face

ce=e.bounds.center

en=ce.offset(e.normal, 100000.mm)

cl90=ents.add_cline(ce, en)   #a vertical line

tr=Geom;;Transformation.rotation(ce, Z_AXIS, 45.degrees)
en.transform!(tr)
cl45=ents.add_line(ce, en)   #a 45 deg line


vec=ce.vector_to(en)
dist=ce.distance(en)

hits=[]
pt = Geom;;Point3d.new  
pe=ce.clone ### set up a copy of the point to raytest from
goon=true
while goon
  rayt= Sketchup.active_model.raytest(pe, vec)
  goon=false if not rayt
  pt=rayt[0]
  hit=rayt[1][0]
  goon=false if ce.distance(pt) > dist
  hits << [pt, hit]
  pe=pt ### look from last hit point...
end#while


hits.each do |s|
if s[1][0].is_a? Sketchup;;Face
hit_face = s.bounds
zmin = hit_face.min.z
zmax = hit_face.max.z
h = zmax - zmin
h = h.to_m
UI.messagebox s[1][0]
UI.messagebox h
end
end


tr=Geom;;Transformation.rotation(ce, Z_AXIS, -90.degrees)
en.transform!(tr)
cl135=ents.add_cline(ce, en)  #a 135 deg line

#en=ce.offset(Z_AXIS, 5000.mm)

#tr=Geom;;Transformation.rotation(ce, X_AXIS, -45.degrees)
#en.transform!(tr)
#cl135=ents.add_cline(ce, en)  #a 135 deg line

#tr=Geom;;Transformation.rotation(ce, X_AXIS, 90.degrees)
#en.transform!(tr)
#cl135=ents.add_cline(ce, en)  #a 135 deg line



end
end
}

Thanks Dan,
i added the two end statements. but the complier doesn't like line 31 ]

pt=rayt[0]

thanks again Dan

Guys sorry i don't mean to be pushy, put after i fired the arrow from centroid I’m looking for a built in function in either add_cline or even add_line to retrieve all the faces that intersect with my line.

Thank you so much guys I’m starting to feel like you are magicians

yes i want to draw construction lines from centroid for a distance D with angle A

Any ideas?
i looked at the links and i still can't see how can i specify an angle

P.S i don't know the coordinates of the point the arrow going to stop at

Hi all,

As i found the best ruby programmers on this forum, i was wondering if anybody can help do this:

i managed to work out centeroid of a face now i need to fire three arrows from the point vertically with angels of (45, 90, 135) degrees.

i know that i can make an edge giving two defined points.
edg = ents.add_edges point1, point2

But is there any way to draw an edge with a certain angle and a giving length of 500 MM for example??

Many thank everyone

Dan Rathbun you are a genies

Hi everyone,

As you all know i'm knew to Sketchup ruby and i can't find this anywhere online.
I have a variable that has a float number and i wanted to round it.

Var = 1.8854523497846
Desired answer Var = 1.9

Also if i can recommend any online sources for Sketchup ruby I’ll be thankful

Thanks

@thomthom said:

Look at model.options http://code.google.com/apis/sketchup/docs/ourdoc/model.html#options

OptionsProvider http://code.google.com/apis/sketchup/docs/ourdoc/optionsprovider.html
OptionsManager http://code.google.com/apis/sketchup/docs/ourdoc/optionsmanager.html

Remember to use the keys to access the options as indexes vary from version to version.

To print out all available options for a given version, use this on-liner:

<span class="syntaxdefault"><br />Sketchup</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">active_model</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">options</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">keys</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">each </span><span class="syntaxkeyword">{|</span><span class="syntaxdefault">key</span><span class="syntaxkeyword">|</span><span class="syntaxdefault"> p key</span><span class="syntaxkeyword">;</span><span class="syntaxdefault"> Sketchup</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">active_model</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">options</span><span class="syntaxkeyword">[</span><span class="syntaxdefault">key</span><span class="syntaxkeyword">].</span><span class="syntaxdefault">each </span><span class="syntaxkeyword">{|</span><span class="syntaxdefault">k</span><span class="syntaxkeyword">,</span><span class="syntaxdefault">v</span><span class="syntaxkeyword">|</span><span class="syntaxdefault"> puts </span><span class="syntaxstring">"> #{k} - #{v}"</span><span class="syntaxkeyword">}</span><span class="syntaxdefault"> </span><span class="syntaxkeyword">}<br /></span><span class="syntaxdefault"> </span>

THANK YOU VERY MUCH. it worked