Class: RecursiveImageComposite

Inherits:
Object
  • Object
show all
Defined in:
lib/ordinals/recursive/composite.rb

Instance Method Summary collapse

Constructor Details

#initialize(cols, rows, width: 100, height: 100) ⇒ RecursiveImageComposite

Returns a new instance of RecursiveImageComposite.



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# File 'lib/ordinals/recursive/composite.rb', line 6

def initialize( cols, rows, 
                width: 100, height: 100 )
   @tile_cols = cols
   @tile_rows = rows
 
   @tile_width  = width
   @tile_height = height

   @recursions = []
end

Instance Method Details

#add(obj) ⇒ Object Also known as: << 



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# File 'lib/ordinals/recursive/composite.rb', line 26

def add( obj ) @recursions << obj; end

#count ⇒ Object Also known as: size 



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# File 'lib/ordinals/recursive/composite.rb', line 18

def count() @recursions.size; end

#height ⇒ Object 



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# File 'lib/ordinals/recursive/composite.rb', line 24

def height() @tile_height*@tile_rows; end

#tile_height ⇒ Object 



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# File 'lib/ordinals/recursive/composite.rb', line 22

def tile_height() @tile_height; end

#tile_width ⇒ Object 



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# File 'lib/ordinals/recursive/composite.rb', line 21

def tile_width() @tile_width; end

#to_svg ⇒ Object 



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# File 'lib/ordinals/recursive/composite.rb', line 29

def to_svg 
buf =<<TXT
<svg
xmlns="http://www.w3.org/2000/svg"
width="100%" height="100%"
viewBox="0 0 #{width} #{height}">
TXT

@recursions.each_with_index do |recursion,i|
  y,x = i.divmod( @tile_cols ) 

  if recursion.is_a?( RecursiveImage )
    comment  =  "№#{i} @ (#{x}/#{y})"
buf += <<TXT 
<g transform="translate(#{x*@tile_width},#{y*@tile_height})">
 <!-- #{comment} -->
 #{recursion.to_svg( :inline )}
</g>
TXT
  else
    id, opts =  recursion.is_a?( Array )? recursion : [recursion, {}]

    pixelate = opts.has_key?(:pixelate) ? opts[:pixelate]
                                        : false
    comment  = opts.has_key?(:comment) ? opts[:comment]
                                       : "№#{i} @ (#{x}/#{y})"
                          
  
    style = pixelate ? %Q[style="image-rendering: pixelated;"] : ''

buf += <<TXT 
<g transform="translate(#{x*@tile_width},#{y*@tile_height})">
 <!-- #{comment} -->
 <image
   width="#{@tile_width}" height="#{@tile_height}"
   href="/content/#{id}"
   #{style} />
</g>
TXT
  end
end


buf += <<TXT
</svg>
TXT

  buf
end

#width ⇒ Object 



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# File 'lib/ordinals/recursive/composite.rb', line 23

def width() @tile_width*@tile_cols; end