with squares

src/quil_sketches/sketch0021.clj

@@ -0,0 +1,63 @@
+(ns quil-sketches.sketch0021
+    (:use [quil.core]
+          [quil-sketches.core])
+    (:import (java.awt Image)
+             (java.awt.image PixelGrabber)
+             (java.io File)
+             (javax.imageio ImageIO)))
+
+;; Trying something a little different with colour...
+
+(defn setup []
+  (smooth)
+  (frame-rate 60)
+  (no-stroke)
+  (let [file    (File. "clojure-logo10[1].png")
+        img     (ImageIO/read file)
+        width   (.getWidth img)
+        height  (.getWidth img)
+        grabber (PixelGrabber. img 0 0 width height true)]
+    (.grabPixels grabber)
+    (def img-width width)
+    (def img-height height)
+    (def x-dia (/ img-width 100))
+    (def y-dia (/ img-height 100))
+    (def pixel-vec (vec (.getPixels grabber)))))
+
+(defn color-vec-from-int [x]
+  [(red x) (green x) (blue x) (alpha x)])
+
+(defn img-points []
+  (for [x (range 0 img-width)
+        y (range 0 img-height)]
+    [x y]))
+
+(defn draw-ellipse [x y x-dia y-dia]
+  (ellipse x y x-dia y-dia))
+
+(defn draw-rect [x-centre y-centre x-dia y-dia]
+  (let [x (- x-centre (int (/ x-dia 2)))
+        y (- y-centre (int (/ y-dia 2)))]
+    (rect x y x-dia y-dia)))
+
+(defn draw-shape [x y x-dia y-dia]
+;  (draw-ellipse x y x-dia y-dia)
+  (draw-rect x y x-dia y-dia)
+  )
+
+(defn make-point [[x y]]
+  (let [color-index (int (+ (* y img-height) x))
+        pixel-value (pixel-vec color-index)
+        color-vec (color-vec-from-int pixel-value)]
+    (apply fill color-vec)
+    (draw-shape x y x-dia y-dia)))
+
+(defn draw []
+  (make-point [(int (random img-width)) (int (random img-height))]))
+
+(start-sketch
+ {:name "Oh so many colourful ellipses"
+  :setup setup
+  :draw draw
+  :size [500 500]
+  :filename "sketch0020.png"})