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 (import '(java.awt Graphics2D Panel))

    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 (defmulti  display "Creates a JFrame and displays a buffered image"  class)

    42 

    43 (defn- makePanel [image] (proxy [Panel] [] (paint [g]  (.drawImage g image 0 0 nil))))

    44 

    45 (defmethod display 

    46   BufferedImage  [image] 

    47   (let [panel (makePanel image)

    48 	frame (JFrame. "Oh Yeah!")]

    49     (.add frame panel) 

    50     (.pack frame) 

    51     (.setVisible frame true ) 

    52     (.setSize frame(.getWidth image) (.getHeight image))))

    53  

    54 (defmethod display

    55   ImagePlus [image]

    56   (display (.getBufferedImage image)))

    57 

    58 (defmethod display

    59   clojure.lang.PersistentHashMap [frame-hash]

    60   (display (frame-hash->bufferedImage frame-hash)))

    61 

    62 (defmethod display

    63     clojure.lang.PersistentArrayMap [frame-hash]

    64     (display (frame-hash->bufferedImage frame-hash)))

    65 

    66 

    67 (defn frame-hash

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

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

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

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

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

    73     (with-meta

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

    75 	    color (.getColorModel buf)]

    76 	(apply hash-map 

    77 	       (interleave 

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

    79 			 (vector x y)))

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

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

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

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

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

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

    86 

    87 

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

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

    90 

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

    92 

    93 (defn rgb-euclidian

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

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

    96 	  (expt (- g1 g2) 2)

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

    98 

    99 (defn b&w

   100   "turn everything strictly black or white"

   101   [window]

   102   (with-meta

   103   (zipmap

   104    (keys window)

   105    (map (fn  [rgb] 

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

   107 	    black white))

   108 	(vals window))) (meta window)))

   109 

   110 

   111 

   112 (defn raster-preamble []

   113   (str-join \newline

   114 	    ["M63 P0\nG61"

   115 	    (str \F feed)

   116 	    "M101"

   117 	    "M3 S1"]))

   118 

   119 

   120 

   121 

   122 

   123 

   124 

   125 

   126 

   127 

   128 

   129 

   130   

   131   

   132 

   133 

   134 

   135 

   136 

   137 

   138 

   139 

   140 (defn frame-hash->bufferedImage

   141   [frame-hash]

   142     (let [data  (meta frame-hash)

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

   144 	

   145 	(doall (for [element frame-hash] 

   146 	  (let [coord  (key element) 

   147 		rgb   (val element)

   148 		packed-RGB 

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

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

   151 		                   (:b rgb))]

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

   153 	image))

   154 

   155 

   156
author	Robert McIntyre <rlm@mit.edu>
date	Fri, 20 Aug 2010 00:49:00 -0400
parents	5ed873917c34
children	6533b4ef83ad