🔰patterns

browser ⟩ canvas ⟩ graphics state ⟩ fill/stroke styles ⟩ pattern

⭐️ 重點

• first argument to .createPattern() method should be an <img> or <canvas>.

• the <img> or <canvas> does NOT need to be in the DOM.

📘 手冊

• CanvasRenderingContext2D ⟩ .createPattern()