Class: Quartz::Function

Inherits:
Object
  • Object
show all
Defined in:
lib/rubyquartz/function.rb

Instance Method Summary collapse

Constructor Details

#initialize(domain, range) ⇒ Function

domain/range are each an array of Ranges when creating the CGFunctionRef:

info = self
domainDimention = domain.length
domain = C array built from 'domain'
as above for rangeDimention and range
callbacks:
  evaluate -> #evaluate on the instance
  releaseInfo -> nothing since the info should only get released if we get GC'd?



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# File 'lib/rubyquartz/function.rb', line 38

def initialize(domain, range)
  # Flatten the domain and range arrays of ranges to interleaved start/end pairs.
  # The length values should be the count of ranges, not the count of flattended values
  flattened_domain = []
  domain.each {|r| flattened_domain << r.begin << r.end}
  
  flattened_range = []
  range.each {|r| flattened_range << r.begin << r.end}
  
  _initialize(domain.length, flattened_domain, range.length, flattened_range)
end

Instance Method Details

#evaluate(input, output) ⇒ Object

input is a domain-lengthed array of Numerics output is a domain-lenghted array of Numerics OPTIMIZATION: Keep these arrays around in C-land to avoid reallocating them on each call?



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# File 'lib/rubyquartz/function.rb', line 53

def evaluate(input, output)
  raise "Subclasses must implement evaluate"
end