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first pass at sunflower distribution visualization
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(ns shimmers.sketches.sunflower | ||
(:require | ||
[quil.core :as q :include-macros true] | ||
[quil.middleware :as m] | ||
[shimmers.common.framerate :as framerate] | ||
[shimmers.common.ui.controls :as ctrl] | ||
[shimmers.sketch :as sketch :include-macros true] | ||
[shimmers.common.quil :as cq] | ||
[thi.ng.math.core :as tm] | ||
[shimmers.math.vector :as v] | ||
[clojure.math :as math])) | ||
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;; https://stackoverflow.com/questions/28567166/uniformly-distribute-x-points-inside-a-circle | ||
(defn setup [] | ||
(q/color-mode :hsl 1.0) | ||
(q/frame-rate 24) | ||
{:alpha 0.0 | ||
:points 512}) | ||
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(defn update-state [state] | ||
(update state :alpha (fn [a] (mod (+ a 1.0) 10.0)))) | ||
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(defn draw [{:keys [points alpha]}] | ||
(q/background 1.0) | ||
(let [center (cq/rel-vec 0.5 0.5) | ||
radius (* 0.45 (min (q/height) (q/width))) | ||
exterior (min (int (tm/roundto (* alpha (math/sqrt points)) 0.1)) points) | ||
interior (- points exterior) | ||
k-theta (* math/PI (- 3 (math/sqrt 5)))] | ||
(doseq [[r theta] (mapv (fn [i] [(if (< i interior) (/ (float i) (inc interior)) 1.0) | ||
(* i k-theta)]) | ||
(range points))] | ||
(cq/circle (v/+polar center (* r radius) theta) | ||
2.0)))) | ||
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(defn page [] | ||
[:div | ||
(sketch/component | ||
:size [800 600] | ||
:setup setup | ||
:update update-state | ||
:draw draw | ||
:middleware [m/fun-mode framerate/mode])]) | ||
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(sketch/definition sunflower | ||
{:created-at "2024-04-08" | ||
:tags #{} | ||
:type :quil} | ||
(ctrl/mount page)) |