Pen(ペン)

Pen.penClear ( ペン描画をクリアする )

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import { Typescratcher as Ts } from "@tscratch3/typescratcher";
import type { Sprite } from "@tscratch3/typescratcher";

const cat = new Ts.Sprite( 'cat' );

const thread = function( this : Sprite ) {
    this.Pen.penClear();
}