Mercurial > lasercutter

     1 (ns laser.rasterize)

     2 

     3 (import '(java.io File))

     4 (import '(org.apache.commons.io FileUtils))

     5 (import '(javax.imageio ImageIO) )

     6 (import '(javax.swing JFrame))

     7 (import '(java.awt Color BorderLayout))

     8 (import '(ij ImagePlus IJ))

     9 (import '(java.lang Math))

    10 

    11 (import '(ij Macro))

    12 

    13 (import '(java.io BufferedReader InputStreamReader))

    14 (import '(java.awt.image BufferedImage))

    15 

    16 (use 'clojure.contrib.str-utils)

    17 

    18 (use 'clojure.contrib.combinatorics)

    19 

    20 

    21 (use 'clojure.contrib.repl-utils)

    22 

    23 (set! *print-length* 20)

    24 

    25 

    26 (def img "/home/r/graster/test.png")

    27 

    28 

    29 (def feed 120)

    30 (def  dpi [500, 500])

    31 (def on_range [0.0, 0.5])

    32 (def overshoot 0.5)

    33 (def offset [1.0, 1.0])

    34 (def tiles [1, 1])

    35 (def tile_size [false, false])

    36 (def tile_spacing [0.125, 0.125])

    37 (def feed 120)

    38 (def cut_feed 20)

    39 (def corner_radius 0)

    40 

    41 

    42 

    43 

    44 (defn raster-preamble []

    45   (str-join \newline

    46 	    ["M63 P0\nG61"

    47 	    (str \F feed)

    48 	    "M101"

    49 	    "M3 S1"]))

    50 

    51 

    52 

    53 (defn frame-hash

    54   "yields a convienent representation for the pixles in an image.

    55    Because of the size of the structvre generated, this must only be used

    56    in a transient way so that java can do it's garbage collection."

    57   [#^java.lang.String image-name]

    58   (let [image+ (ImagePlus. image-name)]

    59     (with-meta

    60       (let [buf (.. image+ getBufferedImage)

    61 	    color (.getColorModel buf)]

    62 	(apply hash-map 

    63 	       (interleave 

    64 		(doall (for [x (range (.getWidth image+)) y (range (.getHeight image+))]

    65 			 (vector x y)))

    66 		(doall (for [x (range (.getWidth image+)) y (range (.getHeight image+))]

    67 			 (let [data (.getRGB buf x y)] 

    68 			   (hash-map :r (bit-shift-right (bit-and 0xff0000 data) 16)

    69 				     :g (bit-shift-right (bit-and 0x00ff00 data) 8)

    70 				     :b (bit-and 0x0000ff data))))))))

    71       {:width  (.getWidth image+) :height (.getHeight image+)})))

    72 

    73 

    74 (def white {:r 255, :g 255, :b 255})

    75 (def black {:r 0,   :g 0,   :b 0})

    76 

    77 (def expt #(Math/pow %1 %2))

    78 

    79 (defn rgb-euclidian

    80   [{r1 :r g1 :g b1 :b} {r2 :r g2 :g b2 :b} ]

    81   (expt (+ (expt (- r1 r2) 2)

    82 	  (expt (- g1 g2) 2)

    83 	  (expt (- b1 b2) 2)) 0.5))

    84 

    85 (defn b&w

    86   "turn everything strictly black or white"

    87   [window]

    88   (with-meta

    89   (zipmap

    90    (keys window)

    91    (map (fn  [rgb] 

    92 	  (if (> (rgb-euclidian rgb white) (rgb-euclidian rgb black))

    93 	    black white))

    94 	(vals window))) (meta window)))

    95 

    96 

    97 

    98 

    99 

   100   

   101   

   102 

   103 

   104 

   105 

   106 

   107 

   108 

   109 

   110 (defn frame-hash->bufferedImage

   111   [frame-hash]

   112     (let [data  (meta frame-hash)

   113 	image (BufferedImage. (:width data) (:height data) BufferedImage/TYPE_INT_BGR)]

   114 	

   115 	(doall (for [element frame-hash] 

   116 	  (let [coord  (key element) 

   117 		rgb   (val element)

   118 		packed-RGB 

   119 		(+ (bit-shift-left (:r rgb) 16)

   120 		   (bit-shift-left (:g rgb) 8)

   121 		                   (:b rgb))]

   122 	    (.setRGB image (first coord) (last coord) packed-RGB))))

   123 	image))

   124 

   125 

   126
author	Robert McIntyre <rlm@mit.edu>
date	Fri, 20 Aug 2010 00:32:44 -0400
parents	163bf9b2fd13
children	5ed873917c34