Class: Magick::Image

Inherits:
Object show all
Defined in:
docs/hornetseye-rmagick/lib/hornetseye-rmagick/image.rb

Instance Method Summary collapse

Instance Method Details

#to_multiarray ⇒ Object 



60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
 
# File 'docs/hornetseye-rmagick/lib/hornetseye-rmagick/image.rb', line 60

def to_multiarray
  case image_type
  when BilevelType, GrayscaleType, GrayscaleMatteType
    case depth
    when 32
      to_type Hornetseye::UINT
    when 16
      to_type Hornetseye::USINT
    when 1, 8
      to_type Hornetseye::UBYTE
    else
      Kernel.raise "Conversion for grayscale image with depth #{depth} not " +
        "implemented"
    end
  when PaletteType, PaletteMatteType, TrueColorType, TrueColorMatteType
    case depth
    when 32
      to_type Hornetseye::UINTRGB
    when 16
      to_type Hornetseye::USINTRGB
    when 8
      to_type Hornetseye::UBYTERGB
    else
      Kernel.raise "Conversion for colour image with depth #{depth} not " +
        "implemented"
    end
  else
    Kernel.raise "Unknown image type #{image_type.inspect}"
  end
end

#to_type(typecode) ⇒ Object 



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
51
52
53
54
55
56
57
58
 
# File 'docs/hornetseye-rmagick/lib/hornetseye-rmagick/image.rb', line 20

def to_type( typecode )
  case typecode
  when Hornetseye::UBYTE
    format = 'I'
    pixel_type = CharPixel
  when Hornetseye::USINT
    format = 'I'
    pixel_type = ShortPixel
  when Hornetseye::UINT
    format = 'I'
    pixel_type = IntegerPixel
  when Hornetseye::SFLOAT
    format = 'I'
    pixel_type = FloatPixel
  when Hornetseye::DFLOAT
    format = 'I'
    pixel_type = DoublePixel
  when Hornetseye::UBYTERGB
    format = 'RGB'
    pixel_type = CharPixel
  when Hornetseye::USINTRGB
    format = 'RGB'
    pixel_type = ShortPixel
  when Hornetseye::UINTRGB
    format = 'RGB'
    pixel_type = IntegerPixel
  when Hornetseye::SFLOATRGB
    format = 'RGB'
    pixel_type = FloatPixel
  when Hornetseye::DFLOATRGB
    format = 'RGB'
    pixel_type = DoublePixel
  else
    Kernel.raise "Cannot convert to typecode #{typecode}"
  end
  Hornetseye::MultiArray.import typecode,
    export_pixels_to_str( 0, 0, columns, rows, format, pixel_type ),
    columns, rows
end