Quil: pleiades

pleiades.clj

(ns pleiades
  (:import [processing.core PApplet PConstants])
  (:use quil.core))

(def screen-w 1920)
(def screen-h 1080)

; TODO: Need to apply blur to entire background; stars look too fake here
(defn- generate-background-stars []
  (doseq [_ (range 1000)]
    (let [r (random 5)]
      (fill 255 255 255)
      (ellipse (random screen-w) (random screen-h) r r))))

; TODO: Need to blur blue rings or starlight together instead of independently;
; forces a completely different implementation of this routine
(defn- generate-star [x y r]
  (no-stroke)
  (let [gc-width 500
        gc-center (/ gc-width 2)
        gc (create-graphics gc-width gc-width PApplet/P3D)]
    (doto gc
      (.beginDraw)
      (.noStroke)
;      (.fill 0 0 64)
;      (.ellipse gc-center gc-center (* r 3) (* r 3))
;      (.filter PConstants/BLUR 15)
      (.fill 0 0 127)
      (.ellipse gc-center gc-center (* r 1.5) (* r 1.5))
      (.filter PConstants/BLUR 15)
      (.fill 255 255 255)
      (.ellipse gc-center gc-center (* r 0.5) (* r 0.5))
      (.filter PConstants/BLUR 4)
      (.stroke 255 255 255)
      (.noFill)
      (.ellipse gc-center gc-center (* r 1.1) (* r 1.1))
      (.line (- gc-center r) gc-center (+ gc-center r) gc-center)
      (.line gc-center (- gc-center r) gc-center (+ gc-center r))
      (.filter PConstants/BLUR 2)
      (.endDraw))
    (image gc (- x gc-center) (- y gc-center))))

; TODO: Violates DRY; need to fix this
(defn- generate-pleides []
  (generate-star 500 600 100)
  (generate-star 500 550 40)
  (generate-star 800 575 150)
  (generate-star 950 700 100)
  (generate-star 1025 315 30)
  (generate-star 1040 300 30)
  (generate-star 1050 425 100)
  (generate-star 1150 350 50)
  (generate-star 1200 575 100)
  (generate-star 1210 475 40)
  )

(defn setup []
  (smooth)
  (background 0)
  (no-loop))

(defn draw []
  (generate-background-stars)
  (generate-pleides)
  (save "pleiades.png"))

(defsketch main
  :title "pleiades"
  :setup setup
  :draw draw
  :size [screen-w screen-h])