Class: Hornetseye::Lookup

Inherits:
Node show all
Defined in:
docs/multiarray/lib/multiarray/lookup.rb

Overview

Class for lazy array lookup

Instance Method Summary collapse

Methods inherited from Node

#<=>, ===, #[], #[]=, #allocate, #b=, #b_with_decompose, #basetype, #between?, bool, #check_shape, #clip, coercion_bool, coercion_byte, coercion_maxint, #collect, #components, cond, #conditional, #convolve, #dilate, dimension, #dimension, #downsample, #dup, #each, #empty?, #eq_with_multiarray, #erode, #fill!, #flip, float_scalar, floating, #fmod_with_float, #g=, #g_with_decompose, #gauss_blur, #gauss_gradient, #height, #histogram, #histogram_with_rgb, #if, #if_else, #imag=, #imag_with_decompose, indgen, #inject, #inspect, #integral, #lut, #lut_with_rgb, #mask, #matched?, #max, #mean, #memorise, #min, #normalise, #orig_to_cvmat, #orig_to_type_with_frame, #prod, #r=, #r_with_decompose, #range, #real=, #real_with_decompose, #reshape, rgb?, #rgb?, #roll, #save_dfloat, #save_dfloatrgb, #save_magick, #save_openexr, #save_sfloat, #save_sfloatrgb, #save_ubyte, #save_ubytergb, #save_uint, #save_uintrgb, #save_usint, #save_usintrgb, scalar, shape, #shift, #show, #size, #sobel, #stretch, #sum, #swap_rgb_with_scalar, #to_a, #to_cvmat, #to_magick, #to_narray, to_type, #to_type, #to_type_with_frame, #to_type_with_identity, #to_type_with_rgb, #transpose, typecode, #unmask, #unroll, #warp, #width

Constructor Details

#initialize(p, index, stride) ⇒ Lookup

Create array lookup

Parameters:

  • p (Node) —

    Object supporting lookup.

  • index (Variable) —

    The array index.

  • stride (Node) —

    The array stride.



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# File 'docs/multiarray/lib/multiarray/lookup.rb', line 28

def initialize( p, index, stride )
  @p, @index, @stride = p, index, stride
end

Instance Method Details

#decompose(i) ⇒ Node

Decompose composite elements

This method decomposes composite elements into array.

Returns:

  • (Node) —

    Result of decomposition.



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# File 'docs/multiarray/lib/multiarray/lookup.rb', line 179

def decompose( i )
  if typecode < Composite
    Lookup.new @p.decompose( i ), @index, @stride * typecode.num_elements
  else
    Lookup.new @p.decompose( i ), @index, @stride
  end
end

#memory ⇒ Malloc, ...

Get storage object if there is any

Returns:



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# File 'docs/multiarray/lib/multiarray/lookup.rb', line 35

def memory
  @p.memory
end

#shape ⇒ Array<Integer>

Get shape of this term

Returns:

  • (Array<Integer>) —

    Returns shape of array.



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# File 'docs/multiarray/lib/multiarray/lookup.rb', line 42

def shape
  @p.shape
end

#typecode ⇒ Class

Element-type of this term

Returns:

  • (Class) —

    Element-type of this datatype.



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# File 'docs/multiarray/lib/multiarray/lookup.rb', line 79

def typecode
  @p.typecode
end