Ruby code: Random colored faces ?

[tomot]

Does anyone know if its possible to use the Rand function, or some other way to distribute random colors to a number of pushpull faces ?

the present code below, defines a single color, I would like to add a random color routine

face = entities.add_face $xp0, $p1 ,$p4, $p0  
face.material= Sketchup;;Color.new(255, 255, 255)
face.pushpull -($tthick+rand(20))

The random color selection would paint faces similar to the pic, whose faces presently were individually painted.

---

[thomthom]

face.material= Sketchup::Color.new( rand(255), rand(255), rand(255))

[tomot]

@thomthom said:

face.material= Sketchup::Color.new( rand(255), rand(255), rand(255))

thanks thomthom for the quick reply;
It works with the pushpull code below: however the faces are extruded below grade.

face.pushpull $tthick

Here the pushpull code extrudes the faces above grade, but the colors get trapped inside the extrusion.

face.pushpull -$tthick

is there a reverse statement I can use?

[thomthom]

It sounds like the direction of your face isn't what it needs to be for you to get your expected result. Normally the direction of a face is controlled by the order of the vertices used to create the face - clockwise vs counter-clockwise. The exception is when the face is on the group plane, then SketchUp will force it face down.

What you can try is, before you push-pull: face.reverse! - this will flip the face normal.

[tomot]

My error, I picked the order of the faces anticlockwise

[pilou]

Maybe Chris Fullmer can help you

[Didier Bur]

Hi

@unknownuser said:

I picked the order of the faces anticlockwise

You just have to reverse the order of points when creating the face, or to check the normal after creating it:

myface=Sketchup.active_model.entities.add_face(p1,p2,...pn)
# Default normal to blue (up)
face.reverse! if face.normal.z<0