Class: XRVG::Filter

Inherits:
Object
  • Object
show all
Includes:
Samplable
Defined in:
lib/samplation.rb

Overview

Filter class

Intro

Filter class allows to call generically a method with arg between 0.0..0.1 on a given object, for use in a FloatFunctor context.

Example

this allow to do for example 

[bezier1.filter(:point), bezier1.filter(:tangent), palette].samples( 10 ) do |point, tangent, color|

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Samplable

#apply_sample, #apply_samples, build, #mean, #sample, #samples

Methods included from FloatFunctor

#addfilter, #alternate, #apply, #applyhash, #compute, #filter, #generate, #geo, #geofull, #modify, #process, #random, #shuffle, #sin, #ssort, #transforms, #trigger

Constructor Details

#initialize(object = nil, samplemethod = :sample, &block) ⇒ Filter

to define a filter on “object” with method “samplemethod”, or with a block (exclusive)

from these two alternatives, returns a proc to call for float processing



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# File 'lib/samplation.rb', line 316

def initialize(object=nil, samplemethod=:sample, &block)
  if object
    # Trace("Filter::initialize object #{object.inspect} method #{samplemethod.inspect} ")
    @proc = object.method( samplemethod )
  else
    @proc = Proc.new( &block )
  end
end

Class Method Details

.with(&block) ⇒ Object

shortcut method aliasing Filter.new( nil, nil, &block)

must change the name, because “with” seems to refer to LISP “with” design pattern, and this is not the case here



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# File 'lib/samplation.rb', line 335

def Filter.with( &block )
  return Filter.new( nil, nil, &block)
end

Instance Method Details

#transform(abs) ⇒ Object

Samplable redefinition : call previous proc built from initialize to process float “abs”



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# File 'lib/samplation.rb', line 326

def transform( abs )
  result = @proc.call( abs )
  # Trace("Filter::transform abs #{abs} result #{result.inspect}")
  return result
end