su-cnc

Basic CNC API for SketchUp. Not even work in progress. This readme is to help me keep track of the general approach I plan on taking when writing this extension.

PersistantObject

A persistant object is meant to tie the following together

• Ruby objects
• SketchUp entities
• Attribute dictionaries

Here is some pseudo code to illustrate how they work

class Foo < PersistantObject
  def initialize(entities)
    super
    #construct some geometry and add to the entities
  end
end

ents = Sketchup.active_model.entities
foo = Foo.new(ents)

foo["my_data"] = "something interesting"

ent = ents[0]
obj = Foo.load(ent)
puts obj.is_a?(Foo) #=>true
puts obj["my_data"] #=>"something interesting"

Tree

A helper to iterate through the tree of the model, group or component instance to find persistant objects

model = Sketchup.active_model
puts Tree.find(Foo, model) #=> [foo, foo, foo]

Main classes and modules

• Workpiece (Persistant Object)
• Operation (Persistant Object)
  • Toolpath (Persistant Object)
  • Hole (Persistant Object)
• Machine
• Parser
• Job
• Simmulation

General workflow

• Workpiece is defined. Design is double nested
• Basic tool for defining toolpaths
• Basic tool for defining holes
• Parse
• Simmulate