From ce17d42203a17120736d796d0e83b3742c4ec441 Mon Sep 17 00:00:00 2001
From: Riku <risaku@163.com>
Date: 星期二, 21 十月 2025 21:54:52 +0800
Subject: [PATCH] 2025.10.21

---
 src/model/Legend.js |   93 +++++++++++++++++++++++++++++++++++++++++-----
 1 files changed, 83 insertions(+), 10 deletions(-)

diff --git a/src/model/Legend.js b/src/model/Legend.js
index cf6d5b3..1492cbf 100644
--- a/src/model/Legend.js
+++ b/src/model/Legend.js
@@ -10,7 +10,7 @@
   _legend_r: {
     NO: [0, 100, 200, 700, 1200, 2340],
     NO2: [0, 100, 200, 700, 1200, 2340],
-    CO: [0, 5, 10, 35, 60, 90],
+    CO: [0, 5000, 10000, 35000, 60000, 90000],
     H2S: [0, 150, 500, 650, 800, 1600],
     SO2: [0, 150, 500, 650, 800, 1600],
     O3: [0, 160, 200, 300, 400, 800],
@@ -148,7 +148,7 @@
     [0.87, 0.92, 0.03, 0.75],
     [0.8, 0.67, 0.04, 0.75],
     [0.92, 0.28, 0.07, 0.75],
-    [0.6, 0.05, 0.05, 0.75]
+    [0.96, 0.05, 0.05, 0.75]
   ],
 
   getStandardRange: function (name) {
@@ -164,15 +164,14 @@
     //   }
     //   max = parseInt(key)
     // }
-    if (name == 'CO') {
-      min *= 1000;
-      max *= 1000;
-    }
 
     return [min, max];
   },
 
   getColor: function (name, type, data, min, max) {
+    if (!data) {
+      return [0, 0, 0, 0];
+    }
     if (type == this.S_TYPE) {
       return this.getStandardColor(name, data);
     } else {
@@ -192,6 +191,9 @@
       colors = this._legend_c[name];
     } else {
       colors = this._custom;
+    }
+    if (colors == undefined) {
+      colors = this._legend_c['PM25'];
     }
     let index = colors.indexOf(color);
     index--;
@@ -217,9 +219,6 @@
     for (let i = 0; i < range.length; i++) {
       const d = range[i];
       let d1 = d;
-      if (name == 'CO') {
-        d1 *= 1000;
-      }
       if (data >= d1) {
         selected = i;
       } else {
@@ -236,13 +235,87 @@
     return colors[selected];
   },
 
+  getStandardColorAndNext: function (name, data) {
+    if (!data) {
+      return {
+        color: [0, 0, 0, 0],
+        nextColor: [0, 0, 0, 0],
+        range: 0,
+        nextRange: 0
+      };
+    }
+    let range = this._legend_r[name];
+    let colors = this._legend_c[name];
+    if (range == undefined) {
+      range = this._legend_r['PM25'];
+      colors = this._legend_c['PM25'];
+    }
+
+    let selected = undefined;
+    for (let i = 0; i < range.length; i++) {
+      const d = range[i];
+      let d1 = d;
+      if (data >= d1) {
+        selected = i;
+      } else {
+        break;
+      }
+    }
+
+    // 閬垮厤涓嬫爣瓒婄晫
+    if (selected >= colors.length) {
+      selected = colors.length - 1;
+    }
+
+    let nextIndex = selected + 1;
+    if (nextIndex >= colors.length) {
+      nextIndex = colors.length - 1;
+    }
+
+    return {
+      color: colors[selected],
+      nextColor: colors[nextIndex],
+      range: range[selected],
+      nextRange: range[nextIndex]
+    };
+  },
+
   getCustomColor: function (data, min, max) {
     var per = (max - min) / this._custom.length;
-    var i = parseInt(data / per);
+    var i = parseInt((data - min) / per);
     if (i >= this._custom.length) {
       i = this._custom.length - 1;
     }
     return this._custom[i];
+  },
+
+  getCustomColorAndNext: function (data, min, max) {
+    if (!data) {
+      return {
+        color: [0, 0, 0, 0],
+        nextColor: [0, 0, 0, 0],
+        range: 0,
+        nextRange: 0
+      };
+    }
+
+    // 灏嗘暟鎹寜鐓ч鑹叉暟閲忓垎闅旓紝姹傚嚭姣忎竴娈电殑鏁版嵁鍋忕Щ閲�
+    var per = (max - min) / (this._custom.length - 1);
+    // 璁＄畻褰撳墠鏁版嵁鎵�鍦ㄧ殑鍒嗘鑼冨洿
+    var i = parseInt((data - min) / per);
+    // 濡傛灉鏄渶澶у�硷紝鍚屾牱鍒嗗壊鍒版渶鍚庝竴娈�
+    if (i == this._custom.length - 1) i--;
+    var range = min + i * per;
+
+    let nextIndex = i + 1;
+    let nextRange = min + nextIndex * per;
+
+    return {
+      color: this._custom[i],
+      nextColor: this._custom[nextIndex],
+      range,
+      nextRange
+    };
   }
 };
 

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