Twenty-eight till thirty-one

src/aphorisms/thirty.clj

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+(ns aphorisms.thirty
+  (:require [quil.core :as q]
+            [quil.middleware :as qm]
+            [aphorisms.utils.middleware :refer [screenshottable]]
+            [thi.ng.math.core :as m]
+            [thi.ng.math.noise :as n]
+            [thi.ng.geom.line :as l]
+            [thi.ng.geom.rect :as r]
+            [thi.ng.geom.core :as g]
+            [thi.ng.geom.polygon :as p]
+            [thi.ng.geom.vector :as v]))
+
+(def bounds (r/rect 500 500))
+(def canvas (g/scale bounds 0.92))
+
+(defn setup []
+  (q/frame-rate 30)
+  (q/ellipse-mode :center)
+  (q/rect-mode :corners)
+  (q/color-mode :hsb 255)
+  {})
+
+
+(defn noise-line [x y intensity]
+  (->> (map (fn [i]
+              (v/vec2 (+ x (* 10 (n/noise2 (* x 0.003) (* i 0.2))))
+                      (+ y (* i (n/noise1 (+ x 0.4))))))
+            (range intensity))
+       (l/linestrip2)))
+
+(g/subdivide bounds {:num 4})
+
+(defn draw-state [_]
+  (q/background 232)
+  (q/no-fill)
+  (q/stroke 140)
+  (q/with-translation [(/ (- (g/width bounds) (g/width canvas)) 4)
+                       (/ (- (g/height bounds) (g/height canvas)) 2)]
+    (doseq [sector (g/subdivide canvas {:rows 5
+                                        :cols 6})
+            :let [[x y] (g/centroid sector)
+                  line (noise-line x y (* 0.1 (- (g/height bounds) y)))]]
+        (doseq [[from to] (->> (g/vertices line)
+                               (partition 2 1))]
+          #_(q/scale 0 -1)
+          (q/line from to)))))
+
+
+#_:clj-kondo/ignore
+(q/defsketch thirty
+  :title "Thirty"
+  :size (:size bounds)
+  :settings #(q/pixel-density (q/display-density))
+  :setup setup
+  ;; :update update-state
+  :draw draw-state
+  :middleware [qm/pause-on-error (screenshottable) qm/fun-mode])

src/aphorisms/thirty_one.clj

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+(ns aphorisms.thirty-one
+  (:require [quil.core :as q]
+            [quil.middleware :as qm]
+            [thi.ng.geom.rect :as r]
+            [thi.ng.geom.core :as g]
+            [thi.ng.geom.circle :as c]
+            [thi.ng.math.core :as m]))
+
+(def bounds (r/rect 600 600))
+(def canvas (g/scale bounds 0.92))
+
+(defn setup []
+  (q/frame-rate 30)
+  (q/ellipse-mode :center)
+  (q/rect-mode :corners)
+  (q/color-mode :hsb 255)
+  {})
+
+(def circ
+  (c/circle 100))
+
+(defn draw-state [_]
+  (let [t (* 0.0002 (q/millis))]
+    (q/background 232)
+    (q/fill 255)
+    (q/no-stroke)
+    (q/blend-mode :difference)
+    (q/with-translation [(/ (g/width bounds) 2)
+                         (/ (g/height bounds) 2)]
+      (q/ellipse 0 0 (g/width circ) (g/height circ))
+
+      (doseq [i (range 12)
+              :let [offset (* 0.82 (g/height circ))]]
+        (q/ellipse (* offset (Math/cos (- i t))) (* offset (Math/sin (- i t))) (* 0.41 (g/width circ)) (* 0.41 (g/height circ))))
+
+      (doseq [i (mapv (fn [i] (/ i m/TWO_PI )) (range 1 41))
+              :let [offset (* 1.23 (g/height circ))
+                    circumference (* m/TWO_PI offset)]]
+        (q/ellipse (* offset (Math/cos (+ t i))) (* offset (Math/sin (+ t i))) (/ circumference 80) (/ circumference 80))))))
+
+#_:clj-kondo/ignore
+(q/defsketch thirty-one
+  :title "Thirty-One"
+  :size (:size bounds)
+  :settings #(q/pixel-density (q/display-density))
+  :setup setup
+  ;; :update update-state
+  :draw draw-state
+  :middleware [qm/pause-on-error #_(screenshottable) qm/fun-mode])

src/aphorisms/twenty_eight.clj

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+(ns aphorisms.twenty-eight
+  (:require [quil.core :as q]
+            [quil.middleware :as qm]
+            [aphorisms.utils.middleware :refer [screenshottable]]
+            [thi.ng.geom.rect :as r]
+            [thi.ng.geom.core :as g]))
+
+(def bounds (r/rect 640 480))
+
+(defn setup []
+  (q/frame-rate 30)
+  (q/ellipse-mode :center)
+  (q/color-mode :hsb 255)
+  {})
+
+(defn draw-state [_]
+  (q/background 255)
+  (q/stroke 40)
+  (q/fill 255)
+
+  (q/with-translation [(* 0.5 (q/width))
+                       (* 0.5 (q/height))]
+    (doseq [i (range -5 5)
+            :let [r (q/map-range i -5 4 20 32)
+                  x (* i (* (q/sin i) 0.2) 20)
+                  y (q/map-range i -5 4 -20 40)
+                  ]]
+      (q/ellipse x y r r))))
+
+; define 2 images and a mask to apply to them
+
+
+#_:clj-kondo/ignore
+(q/defsketch twenty-eight
+  :title "Twenty-Eight"
+  :size (:size bounds)
+  :settings #(q/pixel-density (q/display-density))
+  :setup setup
+  :update update-state
+  :draw draw-state
+  :middleware [(screenshottable) qm/pause-on-error qm/fun-mode])

src/aphorisms/twenty_nine.clj

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+(ns aphorisms.twenty-nine
+  (:require [quil.core :as q]
+            [quil.middleware :as qm]
+            [aphorisms.utils.middleware :refer [screenshottable]]
+            [thi.ng.math.core :as m]
+            [thi.ng.geom.line :as l]
+            [thi.ng.geom.rect :as r]
+            [thi.ng.geom.core :as g]
+            [thi.ng.geom.polygon :as p]))
+
+(def bounds (r/rect 640 480))
+
+(defn setup []
+  (q/frame-rate 30)
+  (q/ellipse-mode :center)
+  (q/rect-mode :corners)
+  (q/color-mode :hsb 255)
+  {})
+
+(def line (l/line2 [0 (rand-int (g/height bounds))]
+                   [(g/width bounds) (rand-int (g/height bounds))]))
+
+(defn spaced-line [l s]
+  (let [spacer (-> (g/translate line (m/- (nth (g/vertices line) 0)))
+                   (m/normalize)
+                   (g/rotate m/HALF_PI)
+                   (g/scale-size s))]
+    (g/translate l (nth (g/vertices spacer) 1))))
+
+(defn line2->poly2 [l]
+  (p/polygon2 (g/vertices l)))
+
+(line2->poly2 line)
+
+(defn line-pattern [bounds line dist]
+  ;; 1. move line to top of bounds so that it barely still touches it
+  ;; 2. repeat line, spacing it by dist, so that it fills the complete bounds
+
+  )
+
+(defn draw-state [_]
+  (q/background 255)
+  (q/no-fill)
+  (q/stroke-weight 3)
+  (q/stroke 120)
+  (q/with-translation [(* 0.5 (q/width))
+                       (* 0.5 (q/height))]
+    (q/rect -100 -100 100 100 3))
+  (doseq [line (reductions spaced-line line (range 10 101 10))]
+    (apply q/line (g/vertices line))))
+
+#_:clj-kondo/ignore
+(q/defsketch twenty-nine
+  :title "Twenty-Nine"
+  :size (:size bounds)
+  :settings #(q/pixel-density (q/display-density))
+  :setup setup
+  ;; :update update-state
+  :draw draw-state
+  :middleware [(screenshottable) qm/pause-on-error qm/fun-mode])

src/aphorisms/utils/middleware.clj

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+(ns aphorisms.utils.middleware
+  (:require [quil.core :as q]))
+
+(defn- default-name-fn [timestamp]
+  (println "*ns*" *ns*)
+  (format "%s.png" timestamp))
+
+(defn screenshottable
+  ([] (screenshottable {}))
+  ([{:keys [out-dir name-fn]
+     :or {out-dir "exports"
+          name-fn default-name-fn}}]
+   (fn screenshottable [opts]
+     (let [key-pressed (:key-pressed opts)]
+       (when (fn? key-pressed)
+         (println "There is already a function bound to key-pressed."))
+       (assoc opts :key-pressed
+              (fn [e]
+                (println e)
+                (when (fn? key-pressed)
+                  (key-pressed e))))))))