From 236d612c20da03ac6b63838962cad608d5491178 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E3=83=AA=E3=82=AD=E8=90=8C?= <commits@liquidev.net>
Date: Wed, 10 Sep 2025 17:46:24 +0200
Subject: [PATCH] fix CanvasRenderer#getWindowSize being able to return
 {undefined, undefined} thus causing errors in math down the line

---
 static/canvas-renderer.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/static/canvas-renderer.js b/static/canvas-renderer.js
index dfb00ec..5e5d25a 100644
--- a/static/canvas-renderer.js
+++ b/static/canvas-renderer.js
@@ -54,6 +54,7 @@ class CanvasRenderer extends HTMLElement {
     }
 
     getWindowSize() {
+        if (this.width == null || this.height == null) return { width: 0, height: 0 };
         return {
             width: this.width,
             height: this.height,