docs: 调整官网 demo

examples/point/text/demo/iconfont.js

@@ -35,7 +35,6 @@ scene.on('loaded', () => {
         .color('w', [ '#a6cee3', '#1f78b4', '#b2df8a', '#33a02c', '#fb9a99' ])
         .style({
           textAnchor: 'center', // 文本相对锚点的位置 center|left|right|top|bottom|top-left
-          textOffset: [ 40, 0 ], // 文本相对锚点的偏移量 [水平, 垂直]
           padding: [ 0, 0 ], // 文本包围盒 padding [水平，垂直]，影响碰撞检测结果，避免相邻文本靠的太近
           stroke: '#ffffff', // 描边颜色
           fontFamily,

examples/point/text/demo/iconfonts.js

@@ -205,7 +205,7 @@ scene.on('loaded', () => {
     .color('iconColor')
     .style({
       textAnchor: 'center', // 文本相对锚点的位置 center|left|right|top|bottom|top-left
-      textOffset: [ 38, 10 ], // 文本相对锚点的偏移量 [水平, 垂直]
+      textOffset: [ -10, 10 ], // 文本相对锚点的偏移量 [水平, 垂直]
       fontFamily,
       iconfont: true,
       textAllowOverlap: true

examples/point/text/demo/temperture.js

@@ -71,18 +71,18 @@ scene.on('loaded', () => {
       })
         .source(data)
         .shape('icon', 'text')
-        .size(30)
+        .size(25)
         .color('count', t => {
           const c = Number(t.replace('℃', ''));
           return colors[Math.floor(((c - 18) / 16) * 10)];
         })
         .style({
           textAnchor: 'center', // 文本相对锚点的位置 center|left|right|top|bottom|top-left
-          textOffset: [ 30, 5 ],
+          textOffset: [ -25, 15 ],
           padding: [ 2, 2 ],
           fontFamily,
-          iconfont: true
+          iconfont: true,
-          // textAllowOverlap: true
+          textAllowOverlap: true
         });
       scene.addLayer(pointLayer);
 

examples/point/text/demo/updown.js

@@ -62,7 +62,7 @@ scene.on('loaded', () => {
         .color('count', n => (n > 0 ? '#0f0' : '#f00'))
         .style({
           textAnchor: 'center', // 文本相对锚点的位置 center|left|right|top|bottom|top-left
-          textOffset: [ 30, 5 ],
+          textOffset: [ -10, 5 ],
           padding: [ 2, 2 ],
           fontFamily,
           iconfont: true