Class: Numeric

Inherits:
Object
  • Object
show all
Defined in:
lib/interpolate/add/core/numeric.rb

Overview

Extension(s) for the Ruby Numeric class.

Author

Adam Collins

License

Licensed under the MIT license.

Instance Method Summary collapse

Instance Method Details

#interpolate(other, balance) ⇒ Object

Returns a Float that is equal to the interpolated value between self and other. balance should be a Float from 0.0 to 1.0, where the value is a ratio between self and other.

A balance less than or equal to 0.0 returns self, while a balance greater than or equal to 1.0 returns other.



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# File 'lib/interpolate/add/core/numeric.rb', line 21

def interpolate(other, balance)
  # everything should be a Float
  balance = balance.to_f
  left = self.to_f
  right = other.to_f

  # catch the easy cases
  return left if (balance <= 0.0)
  return right if (balance >= 1.0)

  delta = (right - left).to_f
  return left + (delta * balance)
end