view .svn/pristine/01/01346eb099170b569ce9589ce5f15a834ff1b1a7.svn-base @ 1082:997f6d7738f7 bug_531

In repo controller entry action, show the page for the file even if it's binary (so user still has access to history etc links). This makes it possible to use the entry action as the default when a file is clicked on

# Various mathematical calculations extracted from the PDF::Writer for Ruby gem.
# - http://rubyforge.org/projects/ruby-pdf
# - Copyright 2003 - 2005 Austin Ziegler.
# - Licensed under a MIT-style licence.
#

module RFPDF::Math
  PI2   = ::Math::PI * 2.0

  # One degree of arc measured in terms of radians.
  DR  = PI2 / 360.0
  # One radian of arc, measured in terms of degrees.
  RD  = 360 / PI2
  # One degree of arc, measured in terms of gradians.
  DG  = 400 / 360.0
  # One gradian of arc, measured in terms of degrees.
  GD  = 360 / 400.0
  # One radian of arc, measured in terms of gradians.
  RG  = 400 / PI2
  # One gradian of arc, measured in terms of radians.
  GR  = PI2 / 400.0

  # Truncate the remainder.
  def remt(num, den)
    num - den * (num / den.to_f).to_i
  end

  # Wrap radian values within the range of radians (0..PI2).
  def rad2rad(rad)
    remt(rad, PI2)
  end

  # Wrap degree values within the range of degrees (0..360).
  def deg2deg(deg)
    remt(deg, 360)
  end

  # Wrap gradian values within the range of gradians (0..400).
  def grad2grad(grad)
    remt(grad, 400)
  end

  # Convert degrees to radians. The value will be constrained to the
  # range of radians (0..PI2) unless +wrap+ is false.
  def deg2rad(deg, wrap = true)
    rad = DR * deg
    rad = rad2rad(rad) if wrap
    rad
  end

  # Convert degrees to gradians. The value will be constrained to the
  # range of gradians (0..400) unless +wrap+ is false.
  def deg2grad(deg, wrap = true)
    grad = DG * deg
    grad = grad2grad(grad) if wrap
    grad
  end

  # Convert radians to degrees. The value will be constrained to the
  # range of degrees (0..360) unless +wrap+ is false.
  def rad2deg(rad, wrap = true)
    deg = RD * rad
    deg = deg2deg(deg) if wrap
    deg
  end

  # Convert radians to gradians. The value will be constrained to the
  # range of gradians (0..400) unless +wrap+ is false.
  def rad2grad(rad, wrap = true)
    grad = RG * rad
    grad = grad2grad(grad) if wrap
    grad
  end

  # Convert gradians to degrees. The value will be constrained to the
  # range of degrees (0..360) unless +wrap+ is false.
  def grad2deg(grad, wrap = true)
    deg = GD * grad
    deg = deg2deg(deg) if wrap
    deg
  end

  # Convert gradians to radians. The value will be constrained to the
  # range of radians (0..PI2) unless +wrap+ is false.
  def grad2rad(grad, wrap = true)
    rad = GR * grad
    rad = rad2rad(rad) if wrap
    rad
  end
end