class URBANopt::GeoJSON::ScaleArea

Attributes

eps[R]

new_vertices[R]

one[R]

ten[R]

two[R]

zero[R]

Public Class Methods

new(vertices, desired_area, runner, eps) click to toggle source

# File lib/urbanopt/geojson/scale_area.rb, line 29
def initialize(vertices, desired_area, runner, eps)
  @vertices = vertices
  @centroid = OpenStudio.getCentroid(vertices)
  raise "Cannot compute centroid for '#{vertices}'" if @centroid.empty?
  @centroid = @centroid.get
  @desired_area = desired_area
  @new_vertices = vertices
  @runner = runner
  @zero = BigDecimal('0.0')
  @one  = BigDecimal('1.0')
  @two  = BigDecimal('2.0')
  @ten  = BigDecimal('10.0')
  @eps  = eps
end

Public Instance Methods

values(x) click to toggle source

Used to determine new scaled vertices, by iteratively passing in the perimeter distance to minimise the difference of the new and scaled area. Returns the difference of the new area and desired area.

# File lib/urbanopt/geojson/scale_area.rb, line 58
def values(x)
  @new_vertices = URBANopt::GeoJSON::Zoning.divide_floor_print(@vertices, x[0].to_f, @runner, scale = true)
  new_area = OpenStudio.getArea(@new_vertices)
  raise "Cannot compute area for '#{@new_vertices}'" if new_area.empty?
  new_area = new_area.get

  return [new_area - @desired_area]
end