Class: Panomosity::ControlPoint

Inherits:
Object
  • Object
show all
Defined in:
lib/panomosity/control_point.rb

Constant Summary collapse

@@attributes = 
%i(n N x y X Y t g)
@@calculated_attributes = 
%i(dist px py pdist prx pry prdist conn_type i1 i2)

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(attributes) ⇒ ControlPoint

Returns a new instance of ControlPoint.



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# File 'lib/panomosity/control_point.rb', line 109

def initialize(attributes)
  @attributes = attributes
  # conform data types
  @attributes.each do |key, value|
    next if %i(raw).include?(key)
    next unless value.is_a?(String)
    if value.respond_to?(:include?) && value.include?('.')
      @attributes[key] = value.to_f
    else
      @attributes[key] = value.to_i
    end
  end
end

Class Method Details

.all ⇒ Object 



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# File 'lib/panomosity/control_point.rb', line 81

def self.all
  @control_points
end

.calculate_distances(images, panorama_variable) ⇒ Object 



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# File 'lib/panomosity/control_point.rb', line 43

def self.calculate_distances(images, panorama_variable)
  @control_points.each do |cp|
    image1 = images.find { |i| cp.n1 == i.id }
    image2 = images.find { |i| cp.n2 == i.id }
    point1 = image1.to_cartesian(cp.x1, cp.y1)
    point2 = image2.to_cartesian(cp.x2, cp.y2)

    product = point1[0] * point2[0] + point1[1] * point2[1] + point1[2] * point2[2]
    product = 1.0 if product > 1.0
    angle = Math.acos(product)
    radius = (panorama_variable.w / 2.0) / Math.tan((panorama_variable.v * Math::PI / 180) / 2)

    distance = angle * radius
    cp.dist = distance

    cp.i1 = image1
    cp.i2 = image2

    # pixel distance
    # NOTE d,e distances are highest on the top-left and lowest at the bottom-right
    #      control point coordinates are highest on bottom-right and lowest on the top-left
    x1 = (cp.i1.w / 2.0) - cp.x1 + cp.i1.d
    y1 = (cp.i1.h / 2.0) - cp.y1 + cp.i1.e
    x2 = (cp.i2.w / 2.0) - cp.x2 + cp.i2.d
    y2 = (cp.i2.h / 2.0) - cp.y2 + cp.i2.e

    cp.px = x1 - x2
    cp.py = y1 - y2
    cp.pdist = Math.sqrt(cp.px ** 2 + cp.py ** 2)

    # pixel distance including roll
    r = image1.r * Math::PI / 180
    cp.prx = Math.cos(r) * cp.px - Math.sin(r) * cp.py
    cp.pry = Math.cos(r) * cp.py + Math.sin(r) * cp.px
    cp.prdist = Math.sqrt(cp.prx ** 2 + cp.pry ** 2)
  end
end

.get_detailed_info(pto_file_path, cp_type: nil) ⇒ Object 



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# File 'lib/panomosity/control_point.rb', line 36

def self.get_detailed_info(pto_file_path, cp_type: nil)
  exe_dir = File.expand_path('../../exe', File.dirname(__FILE__))
  control_point_info_executable = File.join(exe_dir, 'control_point_info.pl')
  result = `#{control_point_info_executable} --input #{pto_file_path}`
  parse(result, cp_type: cp_type, compact: true)
end

.merge(first_set_control_points, second_set_control_points) ⇒ Object 



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# File 'lib/panomosity/control_point.rb', line 101

def self.merge(first_set_control_points, second_set_control_points)
  @control_points = first_set_control_points.map do |cp1|
    similar_control_point = second_set_control_points.find { |cp2| cp1 == cp2 }
    cp1.dist = similar_control_point.dist
    cp1
  end
end

.parse(pto_file, cp_type: nil, compact: false) ⇒ Object 



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# File 'lib/panomosity/control_point.rb', line 9

def self.parse(pto_file, cp_type: nil, compact: false)
  @control_points = pto_file.each_line.map do |line|
    if compact
      cp_data = line.split(',').map { |part| part.split(' ') }.flatten
      n1, x1, y1, n2, x2, y2, type, dist = *cp_data.to_a.map(&:to_f)
      new(n: n1, N: n2, x: x1, y: y1, X: x2, Y: y2, t: type, dist: dist, raw: line)
    else
      parse_line(line)
    end
  end.compact

  case cp_type
    when :line
      @control_points.select!(&:line?)
    when :normal
      @control_points.select!(&:normal?)
    when :vertical
      @control_points.select!(&:vertical?)
    when :horizontal
      @control_points.select!(&:horizontal?)
    else
      @control_points
  end

  @control_points
end

.parse_line(line) ⇒ Object 



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# File 'lib/panomosity/control_point.rb', line 85

def self.parse_line(line)
  parts = line.split(' ')
  if parts.first == 'c'
    data = parts.each_with_object({}) do |part, hash|
      attribute = @@attributes.find { |attr| part[0] == attr.to_s }
      next unless attribute
      hash[attribute] = part.sub(attribute.to_s, '')
    end

    data[:raw] = line
    data[:dist] = nil

    new data
  end
end

Instance Method Details

#==(o) ⇒ Object 



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# File 'lib/panomosity/control_point.rb', line 179

def ==(o)
  n1 == o.n1 &&
  n2 == o.n2 &&
  x1.floor == o.x1.floor &&
  x2.floor == o.x2.floor &&
  y1.floor == o.y1.floor &&
  y2.floor == o.y2.floor
end

#[](key) ⇒ Object 



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# File 'lib/panomosity/control_point.rb', line 123

def [](key)
  @attributes[key]
end

#[]=(key, value) ⇒ Object 



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# File 'lib/panomosity/control_point.rb', line 127

def []=(key, value)
  @attributes[key] = value
end

#attributes(raw: false) ⇒ Object 



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# File 'lib/panomosity/control_point.rb', line 199

def attributes(raw: false)
  @attributes.keep_if { |k, _| raw || !%i(raw i1 i2).include?(k) }
end

#detailed_info ⇒ Object 



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# File 'lib/panomosity/control_point.rb', line 195

def detailed_info
  "#{to_s.sub(/\n/, '')} dist #{dist.round(4)} pixel_dist #{px.round(4)},#{py.round(4)},#{pdist.round(4)} pixel_r_dist #{prx.round(4)},#{pry.round(4)},#{prdist.round(4)} conn_type #{conn_type}"
end

#generated? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/panomosity/control_point.rb', line 165

def generated?
  !g.nil?
end

#horizontal? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/panomosity/control_point.rb', line 157

def horizontal?
  type == 2
end

#line? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/panomosity/control_point.rb', line 161

def line?
  vertical? || horizontal?
end

#normal? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/panomosity/control_point.rb', line 149

def normal?
  type == 0
end

#not_generated? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/panomosity/control_point.rb', line 169

def not_generated?
  !generated?
end

#recalculate_pixel_distance ⇒ Object 



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# File 'lib/panomosity/control_point.rb', line 188

def recalculate_pixel_distance
  r = i1.r * Math::PI / 180
  self.prx = Math.cos(r) * px - Math.sin(r) * py
  self.pry = Math.cos(r) * py + Math.sin(r) * px
  self.prdist = Math.sqrt(prx ** 2 + pry ** 2)
end

#to_s ⇒ Object 



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# File 'lib/panomosity/control_point.rb', line 173

def to_s
  attrs = generated? ? @@attributes : (@@attributes - %i(g))
  line_values = attrs.map { |attribute| "#{attribute}#{self.send(attribute)}" }
  "c #{line_values.join(' ')}\n"
end

#vertical? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/panomosity/control_point.rb', line 153

def vertical?
  type == 1
end