[Plugin] Click2flip v1.0 20110928

[TIG]

Written as a quick response to someone's query - to show how to detect clicks only on a 'back of a face'...

TIG (c) 2011
Usage: Plugins menu > 'Click Back of Face to Flip...'
Click on a face.
If you click on its back the face flips [reverses].
If you click on its front it's unchanged.
If you don't click on a face nothing happens.
If the face is 'nested' inside a group or component it will still flip!
Press <Esc> or activate another tool to stop this tool...
If you want it to 'beep' when a face is flipped then set @@BEEP=true at
the start of the code...
Donations:
PayPal.com info @ revitrev.org

Version:
1.0 20110928 First issue.

TIG-Click2flip.rb

Here's the alternative 'TIG.flipBacks()' that processes selected faces en mass... http://forums.sketchucation.com/viewtop ... 93#p357193

[Carrozza]

Seems like a great time-saver in some situations, and generally such a clever feature that should be built-int.
Bravo TIG! ^__^

[Pilou]

If you don't click on a face nothing happens.

This one is my favorite!

[CadFather]

Pilou, you are the best!

[byrnebm]

You are a genius.

Just to explain why I wanted to know how to do this. I wanted to use your "RelazioneFacce" script for some work I do. I want to select all the inside surfaces of a room (modelled as a box with no top). The "RelazioneFacce" script gives the orientation I am looking for but only when I have all the back sides of walls facing into the box. I can do this manually by clicking on the faces and reversing them so the back side of faces point in. But I thought there might be something I could put into the script so that when I select all the faces and run the "RelazioneFacce" script the code would firstly check if the back sides were facing inwards and reverse any faces that arent.

This click2flip script will greatly speed up my process so thank you. Just wondering if it could be incorporated programatically as I have described?

[TIG]

To run it on 'all selected faces' is easier - just recast the code so that it isn't a 'tool' that needs to process clicked faces, but rather a method that processes a selection thus...

Code: Select all

module TIG
def self.flipBacks()
  model=Sketchup.active_model
  eye=model.active_view.camera.eye
  faces=[]
  Sketchup.active_model.selection.each{|e|faces << e if e.class==Sketchup::Face}
  return nil unless faces[0]
  model.start_operation("Flip Selected Back Faces...")
  faces.each{|face|
    normal=face.normal
    vector=face.bounds.center.vector_to(eye)
    angle=normal.angle_between(vector)
    face.reverse! if angle > 90.degrees
  }
  model.commit_operation
end
UI.menu('Plugins').add_item('Flip Selected Back Faces...'){self.flipBacks()} unless file_loaded?(__FILE__)
file_loaded(__FILE__)
end

Copy/paste the code into a new file in Plugins called 'TIG-flipBacks.rb', restart Sketchup and the item is in the Plugins menu for you...

EDIT: here's a .rb ready made

TIG-flipBacks.rb

[byrnebm]

Thanks again. When I select the 4 inside surfaces of a box, the script correctly flips all but one of the walls. Do you know what might be causing this? Is it anything to do with my viewpoint when I run the script?

[TIG]

Yes, if a face is towards the camera it won't reverse because as far as the rules go it IS already facing the right way!
If all you want to do is reverse all selected faces then simply make a Shortcut to 'Reverse'.
Select any face so the option is available in the context-menu list, then use Window > Preferences > Shortcuts, filter for 'Reverse', set a shortcut to it - I also have a similar key+alt mapped to 'Orient'... Then you can quickly reverse a selection of faces.
These tools are specifically for reversing all picked or selected faces that are 'backwards' when considering their orientation 'towards' the current eye position...

Capture.PNG

[byrnebm]

Ok thanks. Just a quick question is relation to the script "relazionefacce" which I use with click2flip. For the parameters it returns i.e FACCIA, ORIENAMENTO,AREA and MATERIALE. Where does the Faccia parameter come from and is this something that can be set for each face?

[TIG]

FACCIA [FACE] is name=face.to_s.split(":")[-1].split(">")[0]
i.e. when the array of faces is made they are by their 'id' e.g.
[#<Sketchup::Face:0x1182fad0>,
#<Sketchup::Face:0x1182f9e0>,
...]
The splitting takes the 'id' code so the above list becomes
[0x1182fad0
0x1182f9e0
...
You could of course just omit that column in the file as it does little of use...

[byrnebm]

I was just wondering if there was some way of naming the faces. I was hoping to be able to assign the room name to the horizontal face ie the floor of the room. So when i copy the parameters returned by relazionefacce to a spreadsheet I would know what room the results refer to.

[TIG]

You could of course add an attribute to each face and later match the tabulated values to those, but it means manually adding them all - that's why I used the 'id' - but that only exists per session so isn't that useful later either...
When I code with attributes I usually add a time-stamp id as it's unique enough - if you have two attributes with the value 'office' only one might get found.
Tools like 'flattery' add a unique attribute code to every selected face and then use this in matching parts together later. You could do something similar - add an attribute to every selected face and use the attribute in your tabulated forms. You'd then need a second simple tool to 'find face by id' - it opens a dialog, you'd paste the attribute value from the tabulated data, and it finds the face by its attribute and then highlights that face for you...
Change 'FACCIA' to say 'ID'.
Modify the code thus...

Code: Select all

faces.each{|face|
  tid=(Time.now.to_f*1000).to_i
  face.set_attribute('BB','id',tid)if not face.get_attribute('BB','id',nil)
  ### if it already has an id it's kept...
  tid=face.get_attribute('BB','id',0)
  ###
  name=tid.to_s
  ### ...


Now write a new tool to find a face by id...

Code: Select all

module TIG
 def self.findfacebyid()
  model=Sketchup.active_model
  ss=model.selection
  ss.clear
  results=inputbox(['ID: '],[0],'FindFaceByID')
  return nil unless results
  id=results[0].to_i
  model.active_entities.each{|e|ss.add(e)if e.get_attribute('BB','id',nil)==id}
 end
end

Usage: type TIG.findfacebyid
or make a second menu item using it - follow the other menu item as a guide...
Copy+paste an id from the table into the dialog
The faces' IDs will persist across sessions provided the model is saved...
I used 'BB' as the attribute-library based on your initials, but you can use anything you want...

[Gillman]

Just wanted to thank you for this great plug-in. It has already saved me a ton of time.

[mirale999]

A wonderful plugin! thank you TIG！I think TIG-flipBacks.rb is much more easier than other face reversers until now~

[3dsmax9]

it's great to have a lot of choice thanks TIG, personally i prefer this one FrontFace1-2 : viewtopic.php?t=13380

[mirale999]

it's great to have a lot of choice thanks TIG, personally i prefer this one FrontFace1-2 : viewtopic.php?t=13380

haha! I'm using frontface and Click2flip, they have different feature~ I appreciate the amazing performance of the former, while the latter is faster when I have so many small faces to reverse at once!