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【three.jsのヘルパー解説集】 ⑥DirectionalLightHelperの使い方

Last updated at Posted at 2016-07-13

DirectionalLightHelper

継承:THREE.Line
解説:平行光源(DirectionalLight)を可視化してくれるヘルパーです。平行光源の向きがどちらに向いているかを確認できます。簡素なラインだけで構成されているため、ひと目で向きが解り難いことが有ります。ArrowHelperを使用したほうが分かりやすいかもしれません。

デモ

Untitled.gif

実装例

javascript
var directionalLight = new THREE.DirectionalLight(0xffff00, 0.5);
directionalLight.position.set(1, 1, 0);
scene.add(directionalLight);

var directionalLightHelper = new THREE.DirectionalLightHelper(directionalLight, 2);
directionalLight.position.set(0, 0, 0);
scnene.add(directionalLightHelper);

DirectionalLightHelper(light, size)

  • light:ヘルパーを表示させたいDirectionalLightオブジェクト
  • size:末尾についた四角形の大きさ
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