fix: 优化画板，避免卡顿

.env

@@ -2,6 +2,6 @@ VITE_WS_URL = wss://ai.lingxixue.com/ws/device
 VITE_OSS_URL = https://lxx-web-1313840333.cos.ap-chengdu.myqcloud.com
 VITE_CDN_URL = https://dmgcdn-1313840333.cos.ap-guangzhou.myqcloud.com
 VITE_SERVER_URL = https://ai.lingxixue.com/api/main
-VITE_XXL_VERSION = 2.13.3
+VITE_XXL_VERSION = 2.13.5
 VITE_INIT_VCONSOLE = 0
 VITE_TEACHER_ADMIN_URL = https://edu.lingxixue.com

src/components/SignaturePad/index.vue

@@ -195,8 +195,8 @@ onMounted(() => {
     canvasRef.value.height = canvasPanelRef.value.clientHeight
     signaturePad = new SignaturePad(canvasRef.value, {
       backgroundColor: props.bg,
-      throttle: 16,
-      minDistance: 1,
+      throttle: 24,
+      minDistance: 2.5,
     })
     fillCanvasBackground()
   }

src/components/question/answer/HandDrawn.vue

@@ -353,8 +353,6 @@ watch(showCanvas, async (nv: boolean) => {
   z-index: 10000;
   width: 100vw;
   height: 100%;
-  background-color: rgba(0, 0, 0, 0.45);
-  backdrop-filter: blur(4px);
   background: #f7faf9;
   .drawn-box {
     height: calc(100% - 100px);