From 69535bc78276ef28997b891fcfd25af7dd4e2ff2 Mon Sep 17 00:00:00 2001
From: Sakurasan <26715255+Sakurasan@users.noreply.github.com>
Date: Mon, 10 Aug 2026 23:51:58 +0800
Subject: [PATCH] =?UTF-8?q?feat:=20=E9=A2=98=E6=9D=90=E5=B0=8F=E7=90=83?=
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线性映射被极端涨幅拉平均，多数 0~3% 题材球挤在最小值附近。
改平方根映射：零涨幅 4px、1%≈10px、3%≈15px、极值 22px，
中等涨幅区间球径差显著放大。碰撞力半径动态跟随节点，无需额外适配。

Co-Authored-By: Claude <noreply@anthropic.com>
---
 src/routes/hot-map.tsx | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/src/routes/hot-map.tsx b/src/routes/hot-map.tsx
index 541df80..26f7e48 100644
--- a/src/routes/hot-map.tsx
+++ b/src/routes/hot-map.tsx
@@ -35,9 +35,9 @@ const MODES: { key: 1 | 4; label: string }[] = [
 /* 图视图股票节点上限：按覆盖题材数降序保留最高穿透度的核心股 */
 const MAX_STOCK_NODES = 800;
 
-/* 题材节点半径范围：按题材涨幅绝对值映射（涨得越猛球越大） */
-const THEME_MIN_RADIUS = 6;
-const THEME_MAX_RADIUS = 20;
+/* 题材节点半径范围：按题材涨幅绝对值平方根映射（涨得越猛球越大，小涨幅区分更明显） */
+const THEME_MIN_RADIUS = 4;
+const THEME_MAX_RADIUS = 22;
 
 /* 视图切换：关系图 / 核心股列表 */
 type ViewMode = "graph" | "list";
@@ -673,7 +673,8 @@ function HotMapGraph({ graph }: { graph: ThemeGraph }) {
         code: t.themeCode,
         coverCount: t.stockCount,
         bf3: t.bf3,
-        radius: THEME_MIN_RADIUS + (Math.abs(bf3) / maxAbsBf3) * (THEME_MAX_RADIUS - THEME_MIN_RADIUS),
+        // 平方根映射：同一个小涨幅区间内球径差异更大（线性映射被极端涨幅拉平均）
+        radius: THEME_MIN_RADIUS + Math.sqrt(Math.abs(bf3) / maxAbsBf3) * (THEME_MAX_RADIUS - THEME_MIN_RADIUS),
       };
     });
     const edgeList: SimEdge[] = buildEdgesFromStocks(kept);