Class: SwfRuby::Swf::Matrix

Inherits:
Object
  • Object
show all
Defined in:
lib/swf_ruby/swf/matrix.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(bytearray) ⇒ Matrix

Returns a new instance of Matrix.



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# File 'lib/swf_ruby/swf/matrix.rb', line 19

def initialize(bytearray)
  bits_str = bytearray.unpack("B*").first
  @has_scale = bits_str[0, 1].to_i(2)
  offset = 1
  if @has_scale == 1
    @n_scale_bits = bits_str[offset, 5].to_i(2)
    offset += 5
    @scale_x = bits_str[offset, self.n_scale_bits].to_i(2)
    @scale_y = bits_str[offset+self.n_scale_bits, self.n_scale_bits].to_i(2)
    offset += 2 * self.n_scale_bits
  end
  @has_rotate = bits_str[offset, 1].to_i(2)
  offset += 1
  if @has_rotate == 1
    @n_rotate_bits = bits_str[offset, 5].to_i(2)
    offset += 5
    @rotate_skew_0 = bits_str[offset, self.n_rotate_bits].to_i(2)
    @rotate_skew_1 = bits_str[offset+self.n_rotate_bits, self.n_rotate_bits].to_i(2)
    offset += 2 * self.n_rotate_bits
  end
  @n_translate_bits = bits_str[offset, 5].to_i(2)
  offset += 5
  @translate_x = bits_str[offset, self.n_translate_bits].to_i(2)
  @translate_y = bits_str[offset+self.n_translate_bits, self.n_translate_bits].to_i(2)
  offset += 2 * self.n_translate_bits
  @length = offset >> 3
  @length += 1 if offset & 7 > 0
  self
end

Instance Attribute Details

#has_rotate ⇒ Object

Returns the value of attribute has_rotate.



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# File 'lib/swf_ruby/swf/matrix.rb', line 10

def has_rotate
  @has_rotate
end

#has_scale ⇒ Object

Returns the value of attribute has_scale.



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# File 'lib/swf_ruby/swf/matrix.rb', line 6

def has_scale
  @has_scale
end

#length ⇒ Object (readonly)

byte_aligned



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# File 'lib/swf_ruby/swf/matrix.rb', line 17

def length
  @length
end

#n_rotate_bits ⇒ Object

Returns the value of attribute n_rotate_bits.



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# File 'lib/swf_ruby/swf/matrix.rb', line 11

def n_rotate_bits
  @n_rotate_bits
end

#n_scale_bits ⇒ Object

Returns the value of attribute n_scale_bits.



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# File 'lib/swf_ruby/swf/matrix.rb', line 7

def n_scale_bits
  @n_scale_bits
end

#n_translate_bits ⇒ Object

Returns the value of attribute n_translate_bits.



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# File 'lib/swf_ruby/swf/matrix.rb', line 14

def n_translate_bits
  @n_translate_bits
end

#rotate_skew_0 ⇒ Object

Returns the value of attribute rotate_skew_0.



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# File 'lib/swf_ruby/swf/matrix.rb', line 12

def rotate_skew_0
  @rotate_skew_0
end

#rotate_skew_1 ⇒ Object

Returns the value of attribute rotate_skew_1.



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# File 'lib/swf_ruby/swf/matrix.rb', line 13

def rotate_skew_1
  @rotate_skew_1
end

#scale_x ⇒ Object

Returns the value of attribute scale_x.



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# File 'lib/swf_ruby/swf/matrix.rb', line 8

def scale_x
  @scale_x
end

#scale_y ⇒ Object

Returns the value of attribute scale_y.



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# File 'lib/swf_ruby/swf/matrix.rb', line 9

def scale_y
  @scale_y
end

#translate_x ⇒ Object

Returns the value of attribute translate_x.



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# File 'lib/swf_ruby/swf/matrix.rb', line 15

def translate_x
  @translate_x
end

#translate_y ⇒ Object

Returns the value of attribute translate_y.



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# File 'lib/swf_ruby/swf/matrix.rb', line 16

def translate_y
  @translate_y
end