How to retrieve array of faces that are inside a group?

renderiza

The only thing that comes to my mind is raytest but I hope there is an easier way.

TIG

try something like
faces = group.entities.grep(Sketchup::Face)

renderiza

Hi,

I can't seem to iterate though all the groups to get all faces. Only can retrive faces if I use [0] or [1] in faces = group[0].entities.grep(Sketchup::Face) for only one group.

Is there a way to have something like group.each kinda thing?

model = Sketchup.active_model 
ents = model.entities 

group = ents.grep(Sketchup;;Group)
faces = group[0].entities.grep(Sketchup;;Face)

UI.messagebox faces

Again thanks TIG!

thomthom

<span class="syntaxdefault">model&nbsp;</span><span class="syntaxkeyword">=&nbsp;</span><span class="syntaxdefault">Sketchup</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">active_model<br />ents&nbsp;</span><span class="syntaxkeyword">=&nbsp;</span><span class="syntaxdefault">model</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">entities<br /><br />groups&nbsp;</span><span class="syntaxkeyword">=&nbsp;</span><span class="syntaxdefault">ents</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">grep</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">Sketchup</span><span class="syntaxkeyword">;;</span><span class="syntaxdefault">Group</span><span class="syntaxkeyword">)<br />for&nbsp;</span><span class="syntaxdefault">group&nbsp;in&nbsp;groups<br />&nbsp;&nbsp;faces&nbsp;</span><span class="syntaxkeyword">=&nbsp;</span><span class="syntaxdefault">group</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">entities</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">grep</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">Sketchup</span><span class="syntaxkeyword">;;</span><span class="syntaxdefault">Face</span><span class="syntaxkeyword">)<br /></span><span class="syntaxdefault">end</span>

groups.each {} also works off course.

renderiza

Thanks you Thomthom and TIG you both have been really kind in helping me out!

renderiza

Hi,

Can I include both faces inside groups and faces out of groups in the same 'face=' variable?

model = Sketchup.active_model ;
ents = model.active_entities ;	

groups = ents.grep(Sketchup;;Group) ;
for group in groups
  faces = group.entities.grep(Sketchup;;Face)
end

How can I add this to the faces value above without overwriting it?

faces = ents.grep(Sketchup;;Face) ;

Thanks!

TIG

model = Sketchup.active_model
ents = model.active_entities

faces = ents.grep(Sketchup;;Face)

groups = ents.grep(Sketchup;;Group)
for group in groups
  faces << group.entities.grep(Sketchup;;Face)
end

faces.flatten! ### combine []'s
faces.compact! ### remove 'nils'

### now you have an array of 'faces' in the model's active_entities AND inside all groups in the model's active_entities...

TIG

@unknownuser said:

model = Sketchup.active_model ;
> ents = model.active_entities ;   
> 
> groups = ents.grep(Sketchup;;Group) ;
> for group in groups
>   faces = group.entities.grep(Sketchup;;Face)
> end

Thomthom the code above I though retrieved all faces from all groups but only does it for one. It acts like when I used [0], any ideas?

Note:: Posted this before seeying TIG post...
Let me test your suggestion TIG

Thanks!
See my post just before it uses array<< NOT array= and then a flatten! & compact!

renderiza

model = Sketchup.active_model ;
ents = model.active_entities ;   

groups = ents.grep(Sketchup;;Group) ;
for group in groups
  faces = group.entities.grep(Sketchup;;Face)
end

Thomthom the code above I though retrieved all faces from all groups but only does it for one. It acts like when I used [0], any ideas?

Note:: Posted this before seeying TIG post...
Let me test your suggestion TIG

Thanks!

renderiza

Thank you so much yet again!

thomthom

Another variation on how to get all faces from multiple groups:

<span class="syntaxdefault"><br />model&nbsp;</span><span class="syntaxkeyword">=&nbsp;</span><span class="syntaxdefault">Sketchup</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">active_model<br />ents&nbsp;</span><span class="syntaxkeyword">=&nbsp;</span><span class="syntaxdefault">model</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">entities<br /><br />groups&nbsp;</span><span class="syntaxkeyword">=&nbsp;</span><span class="syntaxdefault">ents</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">grep</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">Sketchup</span><span class="syntaxkeyword">;;</span><span class="syntaxdefault">Group</span><span class="syntaxkeyword">)<br /></span><span class="syntaxdefault">faces&nbsp;</span><span class="syntaxkeyword">=&nbsp;</span><span class="syntaxdefault">groups</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">map&nbsp;</span><span class="syntaxkeyword">{&nbsp;|</span><span class="syntaxdefault">group</span><span class="syntaxkeyword">|&nbsp;</span><span class="syntaxdefault">group</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">entities</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">grep</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">Sketchup</span><span class="syntaxkeyword">;;</span><span class="syntaxdefault">Face</span><span class="syntaxkeyword">)&nbsp;}.</span><span class="syntaxdefault">uniq<br /></span>

The .uniq part is there just in case you have two groups that are copies of each other.

TIG

In my version you ought to add a closing
faces.uniq! ### to remove 'duplicates' if the groups have multiple copies

renderiza

Very grateful indeed!