Offset a line Ruby command

sachi

Dear all,
Does anybody know about a Ruby API command to offset a line? I already checked the API.
It has a command to offset a point.

point1 = point2.offset vector

But i need to offset a line, like a parallel line. Is there any command in Ruby API which i can work with or any suggestions to offset a line(draw a parallel line)?

please help me, im stuck here

thank you in advance

TIG

There are several ongoing 'offset' discussions in the Developers' forum...
There is no API 'offset' method, for edges or faces.
But there are various scripted solutions.
If you have one edge, then you are able to get its vertices, from these you can get two points, and then you can offset these points by a vector of the desired length... and then use something like edge.parent.entities.add_line(pt0,pt1) to make the parallel 'copy'...

PS: I have moved this into the right forum...

Dan Rathbun

module Sachi
  module SomePlugin
    class << self
    def clone_edge_by_offset( e, vec )
      return nil unless e.is_a?(Sketchup;;Edge)
      return nil unless vec.is_a?(Geom;;Vector3d) || vec.is_a?(Array)
      e.parent.entities.add_line( e.start.position.offset(vec), e.end.position.offset(vec) )
    end # method
    end # proxy class
  end # plugin module
end # Author's namespace

Remmel

i have the same problem... not to offset a edge... but offset a face in ruby code
i hope TIG have a solution for this issue
see example

Set the house dimensions (in feet)

@num_windows = 4
door_width = 3
door_height = 7
house_height = 9
house_length = (@num_windows + 1) * (door_width + 2) + 2
house_width = 10
roof_height = 2

ents = model.entities

  pl = ents.add_face([0, 0, 0], [0, house_length, 0],
     [house_width, house_length, 0], 
     [house_width, 0, 0], [0, 0, 0])
	 pl.pushpull -1

TIG

First, your code...
which I assume is just a sample...

door_width = 3
makes it 3" wide

door_width = 3.feet
makes it 3' wide !
etc...

I.E. force the use of a 'length', rather than passing a default 'number' - which SketchUp always interprets as inches !

Also... you'd probably be better off adding a new group into model.active_entities and then adding your new geometry into that group.entities

Currently your code draws a rectangle on the ground [Z=0 - and 0 is 0 in ALL length-units!] and then you extrudes it downwards by -1["]...
If you wanted -1' then use -1.feet etc

AND... you haven't actually explained 'how' you want to 'offset a face' !?
Your code uses 0 for all of the Z values used in the rectangle's corner-points, but of course you could use any value for those Z's - but remember that they should be set to the same length if a valid 'flat' rectangle is to result...

Remmel

@tig said:

First, your code...
which I assume is just a sample...

door_width = 3
makes it 3" wide

door_width = 3.feet
makes it 3' wide !
etc...

I.E. force the use of a 'length', rather than passing a default 'number' - which SketchUp always interprets as inches !

Also... you'd probably be better off adding a new group into model.active_entities and then adding your new geometry into that group.entities

Currently your code draws a rectangle on the ground [Z=0 - and 0 is 0 in ALL length-units!] and then you extrudes it downwards by -1["]...
If you wanted -1' then use -1.feet etc

AND... you haven't actually explained 'how' you want to 'offset a face' !?
Your code uses 0 for all of the Z values used in the rectangle's corner-points, but of course you could use any value for those Z's - but remember that they should be set to the same length if a valid 'flat' rectangle is to result...

now i know in Sketchup API , there is no method to offset a face.... but i thought to offset a face like this..... pl.offset 1, to get a border of 1" width

TIG

You can replicate an offset for a face.
The code is not so simple.
Install my old tool https://sketchucation.com/pluginstore?pln=TIG_Smart_offset
Read the code and try to understand how it works...
It's somewhat more complicated than you need, but you should be able to extract what you need...