更新一版热力图

src/util.js

@@ -445,75 +445,3 @@ export const calcRing = (bowtargetId, x, y, diameter) => {
   }
   return 0;
 };
-
-// 绘制热力图并生成图片
-export const drawHeatMap = (width, height, arrows) => {
-  return new Promise((resolve, reject) => {
-    try {
-      const ctx = uni.createCanvasContext("heatMapCanvas");
-
-      // ctx.setFillStyle("rgba(255, 255, 255, 0.4)");
-      // ctx.fillRect(0, 0, width, height);
-
-      let minCount = 0;
-      let maxCount = 0;
-      // 计算最大和最小频次
-      arrows.forEach((point) => {
-        if (point.count > maxCount) {
-          maxCount = point.count;
-        }
-        if (point.count < minCount) {
-          minCount = point.count;
-        }
-      });
-      // 绘制热力点
-      arrows.forEach((point) => {
-        if (point.x === 0 && point.y === 0) return;
-        // 数量越多，半径越小（反比关系）
-        const radius = 20;
-
-        // 根据频次设置同一种颜色的5个深浅度
-        let color = "rgba(71, 254, 102, 0.2)";
-        // if (point.count >= maxCount * 0.5) {
-        //   color = "rgba(255, 232, 143, 0.7)"; // 最深 - 频次5次及以上
-        // } else if (point.count >= maxCount * 0.4) {
-        //   color = "rgba(255, 232, 143, 0.5)"; // 较深 - 频次4次
-        // } else if (point.count >= maxCount * 0.3) {
-        //   color = "rgba(255, 232, 143, 0.3)"; // 中等 - 频次3次
-        // } else if (point.count >= maxCount * 0.2) {
-        //   color = "rgba(255, 232, 143, 0.2)"; // 较浅 - 频次2次
-        // } else {
-        //   color = "rgba(255, 232, 143, 0.1)"; // 最浅 - 频次1次
-        // }
-
-        // 绘制圆形热力点
-        ctx.setFillStyle(color);
-        ctx.beginPath();
-        ctx.arc(point.x * width, point.y * height, radius, 0, 2 * Math.PI);
-        ctx.fill();
-      });
-
-      ctx.draw(false, () => {
-        // Canvas绘制完成后生成图片
-        uni.canvasToTempFilePath({
-          canvasId: "heatMapCanvas",
-          width: width,
-          height: height,
-          destWidth: width * 2, // 提高图片质量
-          destHeight: height * 2,
-          success: (res) => {
-            console.log("热力图图片生成成功:", res.tempFilePath);
-            resolve(res.tempFilePath);
-          },
-          fail: (error) => {
-            console.error("热力图图片生成失败:", error);
-            reject(error);
-          },
-        });
-      });
-    } catch (error) {
-      console.error("绘制热力图失败:", error);
-      reject(error);
-    }
-  });
-};