Ruby script for selecting color

thomthom

I tried when I use sketchup inputbox popup use defalt nothing happening. when I choose custom it gives mesage "cannot convert Custom to length" could you tell me why?

Because you set the default value of the box to an object of the type Length (6.feet) - this means that the input box will try to convert the return value to be of the same type.

But "Custom" cannot be converted into a valid Length object.

So instead you'd need to use strings as the default value and handle the conversion back to Length as needed.

Btw, it's a lot easier to read your code if you wrap it in [code] tags. (I've done it for you so far.)

TIG

Well done TT - I didn't spot the mismatch between 6.feet length and "6'" string.
If you are making a dropdown list it needs to be text, that you convert to a length later...

TIG

Not
require 'Sketchup.rb' class Testbox def testbox1
...
Try
require 'Sketchup.rb' class Testbox def **initialize**()
...
Then use Testbox.new() which will run the initialize...

nithi09

Thanks you for you help. it's works

nithi09

Hi I want to add texture for this box I want to see this box look like glass box any Idea?
thanks

TIG

If you have a glass texture already existing use that by 'Name'.

If you have added a 'color' material you can get a reference to that after you have made it/added it to a face: mat=base.material and then use mat.alpha=0.5 to add opacity < 1... aka transparency

nithi09

Hi TIG it's working. but I want to see both way. I mean from outside to inside the box see through fine but inside to outside not see through how do I can do both way? or where do I can find clear glass texture
Thanks

TIG

When you give the first face ['base' ?] its material you need to also apply it to the back face thus:
base.material = 'xxxx' base.**back_material** = 'xxxx'
where 'xxxx' is the material...

nithi09

Hi TIG how do I can add glass texture to only one wall of box out of four walls.above method applying whole box. I like to try only one wall glass.thanks

TIG

Well... you need to work out how to 'find' the face first, then once you have it give it a [preexisting] material - let's assume it's name is 'Glass'...
A face has a 'normal' - which the vector that tells us which way a face is looking...
So let's say the collection of faces [along with edges etc] is in ` - then you need to filter that to find just the faces and then from that exact face with a particular 'normal'...
Let's also assume it is a box so only one matching face.normal will be found...

group.entities.grep(Sketchup;;Face).each{|face|
  if face.normal==Z_AXIS ### == faces 'UP'... BUT you can use any vector to compare
    face.material='Glass'
    face.back_material='Glass'
    break ### stop looking
  end
}

group.entities.grep(Sketchup;;Face).each{|face|
if face.normal==Z_AXIS ### == faces 'UP'... BUT you can use any vector to compare
face.material='Glass'
face.back_material='Glass'
break ### stop looking
end
}[/code:ngl1vctf]

nithi09

Hi TIG how do I find preexisting material on my box? is not 'Glass' thx

TIG

Your materials have names.
I used 'Glass' as an example.
The material must already exist in the model.
[I am skipping explaining how to create a material if it doesn't already exist, change its RGB and opacity etc... that wasn't your original question!]

So use any existing material you want - just pass its 'name'...

nithi09

Hi TIG What I am trying to do above creating box one side of box look like see through glass and rest solid coloured any idea???

TIG

An image of what you expect might help us help you, we are not mind-readers.

I have given you a general framework for code that finds "any face" by its direction and gives it a material.
The example I gave was for face.normal==Z_AXIS
which means it faces directly upwards,
BUT you can compare it to any axis
X_AXIS
Y_AXIS
and for the 'opposite direction'...
X_AXIS.reverse
Y_AXIS.reverse
Z_AXIS.reverse

You need to find and read code examples more....

nithi09

Hi TIG could you recommend any good book specific for sketchup with code example. I have a book called "Automatic Sketchup" by Matthew Scarpino. It's not enough detail for me.

TIG

@nithi09 said:

Hi TIG could you recommend any good book specific for sketchup with code example. I have a book called "Automatic Sketchup" by Matthew Scarpino. It's not enough detail for me.
That's an excellent start.
Also get examples of others scripts [not too complex to start] and see how others do it...

nithi09

Hi TIG It's working thanks.
How do I choose specific one face If I have multiple faces in same direction

TIG

Find something unique about that face - like its bounds.min x/y/z ?

TIG

The sloping, upward looking face will have a normal.z>0 BUT ALSO normal.z<1, it also has a normal.x<0 - so that finds that kind of face ?
The triangular face has normal.x==1, BUT so does the rectangular one next to it.
You can differentiate them using face.vertices.lengthon each, ==3 for the triangle and ==4 for the rectangle ?
Or if the difference is that it is below the red axis, testing face.bounds.min.y<0 will find it...

Tip on bb=object.bounds
bb.width is in X
bb.height is in Y
bb.depth is in Z
this is NOT as you might initially assume - 'height' is NOT the Z - the bounds conventions come from the older CAD concept, where width/height are from the screen, when you typically looked at an object in plan, from above; and the 'depth' is the extent it projected 'out-of-the-screen'. 3D modelers like SketchUp show axes in 3d with Z typically up the screen rather that 'out-of-it'... bb.min, bb.max and bb.center etc should be self-evident ?

nithi09

thanks TIG for fast reply I am going to try. I will let you know!!