Module: Scruby::Ugens::UgenOperations

Defined in:
lib/scruby/ugens/ugen_operations.rb

Overview

This module enables Ugen operations for Ugens, Numeric and Arrays, when any instance of this classes executes an operation with an Ugen a BinaryUgenOp is instantiated where both objects are the inputs of the operation, an UnaryUgenOp is instantiated for unary operations This are the permited operations:

Binary: +, -, *, div, /, mod, <=, >=, minimum, maximum, lcm, gcd, round, roundUp, trunc, atan2, hypot, hypotApx, pow, leftShift, rightShift, unsignedRightShift, ring1, ring2, ring3, ring4, difsqr, sumsqr, sqrsum, sqrdif, absdif, thresh, amclip, scaleneg, clip2, excess, fold2, wrap2, rrand and exprand

Unary: neg, bitNot, abs, asFloat, ceil, floor, frac, sign, squared, cubed, sqrt, exp, reciprocal, midicps, cpsmidi, midiratio, ratiomidi, dbamp, ampdb, octcps, cpsoct, log, log2, log10, sin, cos, tam, asin, acos, atan, sinh, cosh, tanh, rand, rand2, linrand, bilinrand, sum3rand, distort, softclip, coin, rectWindow, hanWindow, welWindow, triWindow, ramp and scurve

Constant Summary collapse

UNARY = 
operation_indices['unary']
BINARY = 
operation_indices['binary']
SAFE_NAMES = 
{ :+ => :plus, :- => :minus, :* => :mult, :/ => :div2, :<= => :less_than_or_eql, :>= => :more_than_or_eql }

Class Method Summary collapse

Class Method Details

.included(klass) ⇒ Object 



19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
 
# File 'lib/scruby/ugens/ugen_operations.rb', line 19

def self.included klass
  # Define unary operations
  UNARY.each_key do |op| 
    define_method(op){ UnaryOpUGen.new op, self } unless klass.instance_methods.include? op
  end

  # Define binary operations
  ugen_subclass = klass.ancestors.include? Ugen
  meth_def =
  if ugen_subclass
    proc do |safe, op|
      proc{ |input| BinaryOpUGen.new op, self, input }
    end
  else
    proc do |safe, op|
      proc do |input|
        if input.kind_of? Ugen
          BinaryOpUGen.new op, self, input
        else
          __send__ "__original_#{ safe }", input
        end
      end
    end
  end

  BINARY.each_key do |op|
    safe = SAFE_NAMES[op]
    define_method "__ugenop_#{ safe || op }", &meth_def.call(safe || op, op)
    klass.send :alias_method, "__original_#{ safe || op }", op if safe unless ugen_subclass
    klass.send :alias_method, op, "__ugenop_#{ safe || op }"
  end
end