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P5.js 日本語リファレンス(hue)

Last updated at Posted at 2020-04-30

このページでは[「P5.js 日本語リファレンス」] (https://qiita.com/bit0101/private/91818244dc26c767a0fe) の hue関数を説明します。

hue()

説明文

指定した色から色相値を取得します。

色相はHSBとHSLの両方に存在します。この関数はHSBカラーを指定した場合にHSBの色相値を返しますが、それ以外の場合はデフォルトでHSLの色相値を返します。 (返す色相値は最大色相設定により異なります)

構文

hue(color)

パラメタ

  • color
    p5.Color | Number[ ] | String:p5.Colorオブジェクト、カラーコンポーネント、CSSカラー

戻り値

Number:色相値

function draw() {
  colorMode(HSB, 255); // カラーモードをHSBに設定
  let c = color(180, 126, 255);
  fill(c);
  rect(15, 20, 35, 60);
  value = hue(c); // 色相値180を取得する
  fill(value);
  rect(50, 20, 35, 60);
}

実行結果

hue.JPG

著作権

p5.js was created by Lauren McCarthy and is developed by a community of collaborators, with support from the Processing Foundation and NYU ITP. Identity and graphic design by Jerel Johnson.

ライセンス

Creative Commons(CC BY-NC-SA 4.0) に従います。

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