From 33156dd117d3a806ca604381796ae61c914272f3 Mon Sep 17 00:00:00 2001
From: skie1997 <skie1997@outlook.com>
Date: Mon, 24 Feb 2025 20:28:51 +0800
Subject: [PATCH] fix: roam zoom not work in mobile browser

---
 .../fix-mobile-zoom-not-work_2025-02-24-12-28.json     | 10 ++++++++++
 packages/vrender-kits/src/event/extension/gesture.ts   | 10 +++++++---
 2 files changed, 17 insertions(+), 3 deletions(-)
 create mode 100644 common/changes/@visactor/vrender-kits/fix-mobile-zoom-not-work_2025-02-24-12-28.json

diff --git a/common/changes/@visactor/vrender-kits/fix-mobile-zoom-not-work_2025-02-24-12-28.json b/common/changes/@visactor/vrender-kits/fix-mobile-zoom-not-work_2025-02-24-12-28.json
new file mode 100644
index 000000000..101247c8b
--- /dev/null
+++ b/common/changes/@visactor/vrender-kits/fix-mobile-zoom-not-work_2025-02-24-12-28.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@visactor/vrender-kits",
+      "comment": "fix: roam zoom not work in mobile browser",
+      "type": "none"
+    }
+  ],
+  "packageName": "@visactor/vrender-kits"
+}
\ No newline at end of file
diff --git a/packages/vrender-kits/src/event/extension/gesture.ts b/packages/vrender-kits/src/event/extension/gesture.ts
index 24d7988c9..a0dc41844 100644
--- a/packages/vrender-kits/src/event/extension/gesture.ts
+++ b/packages/vrender-kits/src/event/extension/gesture.ts
@@ -158,9 +158,13 @@ export class Gesture extends EventEmitter {
   }
 
   private onStart = (ev?: FederatedPointerEvent) => {
-    this.cachedEvents = [];
-    this.startPoints = [];
-    this.reset();
+    // 双指缩放时, onStart会被触发多次, startPoints负责收集上下文
+    // 如果onStart时清空startPoints, 会导致onMove提前return, 从而无法触发pinch事件
+    // 由于onEnd时会清空startPoints, 所以这里暂不清空
+    // 后续遇到bad case再作处理
+    // this.cachedEvents = [];
+    // this.startPoints = [];
+    // this.reset();
 
     this.startTime = clock.now();