Class: CrystalScad::Gears::Gear

Inherits:
Assembly show all
Defined in:
lib/crystalscad/Gears.rb

Direct Known Subclasses

PrintedGear

Instance Attribute Summary collapse

Attributes inherited from Assembly

#color, #hardware, #skip, #transformations, #x, #y, #z

Attributes inherited from Primitive

#children

Attributes inherited from CrystalScadObject

#args, #transformations

Instance Method Summary collapse

Methods inherited from Assembly

#*, #+, #-, #add_to_bom, #colorize, #description, get_skip, get_views, #method_missing, #part, #scad_output, #show_hardware, skip, #threads, #transform, view, #walk_tree

Methods inherited from Primitive

#mirror, #rotate, #rotate_around, #scale, #transform, #translate, #union

Methods inherited from CrystalScadObject

#save, #to_rubyscad, #walk_tree, #walk_tree_classes

Constructor Details

#initialize(args = {}) ⇒ Gear

Returns a new instance of Gear.



24
25
26
27
28
29
30
31
32
33
 
# File 'lib/crystalscad/Gears.rb', line 24

def initialize(args={})
  @module = args[:module] || 1.0
  @teeth = args[:teeth] || 1.0
  @bore = args[:bore] || 0.0
  @height = args[:height] || 3.0
      @hub_dia = args[:hub_dia] || 0.0
      @hub_height = args[:hub_height] || 0.0
      @output_margin_dia = args[:output_margin_dia] || 2
      @output_margin_height = args[:output_margin_height] || 1
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method in the class CrystalScad::Assembly

Instance Attribute Details

#height ⇒ Object (readonly)

this library is to be used to easily work with gears and their distances to each other



22
23
24
 
# File 'lib/crystalscad/Gears.rb', line 22

def height
  @height
end

#hub_dia ⇒ Object (readonly)

this library is to be used to easily work with gears and their distances to each other



22
23
24
 
# File 'lib/crystalscad/Gears.rb', line 22

def hub_dia
  @hub_dia
end

#hub_height ⇒ Object (readonly)

this library is to be used to easily work with gears and their distances to each other



22
23
24
 
# File 'lib/crystalscad/Gears.rb', line 22

def hub_height
  @hub_height
end

#module ⇒ Object (readonly)

this library is to be used to easily work with gears and their distances to each other



22
23
24
 
# File 'lib/crystalscad/Gears.rb', line 22

def module
  @module
end

#teeth ⇒ Object (readonly)

this library is to be used to easily work with gears and their distances to each other



22
23
24
 
# File 'lib/crystalscad/Gears.rb', line 22

def teeth
  @teeth
end

Instance Method Details

#distance_to(other_gear) ⇒ Object 



57
58
59
60
61
62
63
 
# File 'lib/crystalscad/Gears.rb', line 57

def distance_to(other_gear)
  if @module != other_gear.module
    raise "You cannot use two gears with different gear modules."
    return
  end
  return (@module.to_f * (@teeth.to_f + other_gear.teeth.to_f))/2.0
end

#output ⇒ Object 



48
49
50
51
52
53
54
55
 
# File 'lib/crystalscad/Gears.rb', line 48

def output
  res = cylinder(d:@module*@teeth+@output_margin_dia,h:@height+@output_margin_height)
  if @hub_height.to_f > 0 && @hub_dia.to_f > 0
    res += cylinder(d:@hub_dia+@output_margin_dia,h:@hub_height+@output_margin_height).translate(z:@height)
  end   

  res   
end

#ratio(other_gear) ⇒ Object 



65
66
67
 
# File 'lib/crystalscad/Gears.rb', line 65

def ratio(other_gear)
  @teeth.to_f / other_gear.teeth.to_f
end

#show ⇒ Object 



35
36
37
38
39
40
41
42
43
44
45
46
 
# File 'lib/crystalscad/Gears.rb', line 35

def show
  res = cylinder(d:@module*@teeth,h:@height)

      if @hub_height.to_f > 0 && @hub_dia.to_f > 0
res += cylinder(d:@hub_dia,h:@hub_height).translate(z:@height)
      end      

      if @bore.to_f > 0.0
    res -= cylinder(d:@bore,h:@height+@hub_height+0.2).translate(z:-0.1)
  end
  res.color("darkgray")
end