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README.md		README.md
sketches.rb		sketches.rb

README.md

Black & White (Pencil Drawing) Sketch Pixel Art Experiment

Mint yourself free CryptoPunks in the Black & White (Pencil Drawing) Sketch pixel art series.

Here's the experiment - let's turn 24x24 pixelated CryptoPunks into black & white sketch art.

How?

Let's use a white background.
Let's check if the left neighbouring (x-1) pixel is of a different color - if yes, draw a black vertical line.
Let's check if the top neighbouring (y-1) pixel is of a different color - if yes, draw a black horizontal line.
Repeat for all pixels.

Alien Punk #3100

Let's try alien punk #3100. Let's mint a fresh 24x24 copy.

require 'cryptopunks'

punks = Punks::Image::Composite.read( './punks.png' )
punk = punks[ 3100 ]
punk.save( './punk-3100.png' )

And let's try four sketch variants:

Sketch Zoom - 4 pixels, Line (Brush) - 1 pixel (the default)
Sketch Zoom - 4 pixels, Line (Brush) - 4 pixels
Sketch Zoom - 8 pixels, Line (Brush) - 2 pixels
Sketch Zoom - 12 pixels, Line (Brush) - 3 pixels

punk_sketch = punk.sketch( 4 )
punk_sketch.save( './punk-3100_sketch4x.png' )

punk_sketch = punk.sketch( 4, line: 4 )
punk_sketch.save( './punk-3100_sketch4x4.png' )

punk_sketch = punk.sketch( 8, line: 2 )
punk_sketch.save( './punk-3100_sketch8x2.png' )

punk_sketch = punk.sketch( 12, line: 3 )
punk_sketch.save( './punk-3100_sketch12x3.png' )

And Voila!

More Punks - Zombies, Blondes, Beanies & Friends

Let's try another batch of punks. Let's mint a fresh copy of zombie #3393, blondie #172 and beanie #2964.

ids = [3393, 172, 2964]
ids.each do |id|
  name = '%04d' % id
  punk = punks[id]
  punk.save( "./punk-#{name}.png" )
end

And let's try four sketch variants:

Sketch Zoom - 4 pixels, Line (Brush) - 1 pixel (the default)
Sketch Zoom - 4 pixels, Line (Brush) - 4 pixels
Sketch Zoom - 8 pixels, Line (Brush) - 2 pixels
Sketch Zoom - 12 pixels, Line (Brush) - 3 pixels

Let's add inside the loop:

ids.each do |id|
  # ...   see above

  punk_sketch = punk.sketch( 4 )
  punk_sketch.save( "./punk-#{name}_sketch4x.png" )

  punk_sketch = punk.sketch( 4, line: 4 )
  punk_sketch.save( "./punk-#{name}_sketch4x4.png" )

  punk_sketch = punk.sketch( 8, line: 2 )
  punk_sketch.save( "./punk-#{name}_sketch8x2.png" )

  punk_sketch = punk.sketch( 12, line: 3 )
  punk_sketch.save( "./punk-#{name}_sketch12x3.png" )
end