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| <template>
<demo-view hide-control @map-complete="ready = true">
<template v-slot:map-content>
<a-form class="controls" layout="inline">
<a-form-item>
<a-button-group>
<template v-if="drawer.mode === 'none'">
<a-button @click="drawer.mode = 'polygon'">多边形</a-button>
<a-button @click="drawer.mode = 'rectangle'">矩形</a-button>
<a-button @click="drawer.mode = 'circle'">圆形</a-button>
</template>
<template v-else>
<a-button @click="drawer.mode = 'none'">取消</a-button>
</template>
</a-button-group>
</a-form-item>
</a-form>
<a-form class="info" layout="inline">
<a-form-item label="面积" v-show="area > 0">{{ (area / 1000000).toFixed(4) }}平方公里</a-form-item>
<a-form-item v-show="area > 0">
<a-button
size="small"
shape="circle"
icon="copy"
@click="showModal"
/>
</a-form-item>
<a-form-item label="卫星图">
<a-switch v-model="satellite" />
</a-form-item>
</a-form>
<amap-satellite-layer :visible="satellite" />
<amap-scale />
<amap-mouse-tool
:mode.sync="drawer.mode"
clear-when-close
@draw="onDraw"
/>
<amap-polygon
v-if="drawer.polygon"
:path.sync="drawer.polygon"
:fill-color="styles.fill"
:stroke-color="styles.stroke"
:fill-opacity="0.5"
editable
/>
<amap-circle
v-if="drawer.circle"
:center.sync="drawer.circle.center"
:radius.sync="drawer.circle.radius"
:fill-color="styles.fill"
:stroke-color="styles.stroke"
:fill-opacity="0.5"
editable
/>
<amap-rectangle
v-if="drawer.rectangle"
:bounds.sync="drawer.rectangle"
:fill-color="styles.fill"
:stroke-color="styles.stroke"
:fill-opacity="0.5"
editable
/>
</template>
</demo-view>
</template>
<script>
import { Modal } from 'ant-design-vue';
function makeBounds(value) {
const sw = new window.AMap.LngLat(value[0][0], value[0][1]);
const ne = new window.AMap.LngLat(value[1][0], value[1][1]);
return new window.AMap.Bounds(sw, ne);
}
export default {
data() {
return {
ready: false,
styles: {
fill: '#409EFF',
stroke: '#000A58',
},
satellite: false,
drawer: {
type: 'polygon',
mode: 'none',
polygon: [
[116.416529, 39.960142],
[116.422794, 39.959287],
[116.421421, 39.953234],
[116.413181, 39.957708],
[116.413782, 39.960866],
],
circle: null,
rectangle: null,
},
};
},
computed: {
area() {
const { ready, drawer } = this;
if (!ready) return 0;
switch (drawer.type) {
case 'none':
return 0;
case 'polygon':
return window.AMap.GeometryUtil.ringArea(drawer.polygon);
case 'rectangle':
return new window.AMap.Rectangle({
bounds: makeBounds(drawer.rectangle),
}).getArea();
case 'circle':
return Math.PI * Math.pow(drawer.circle.radius, 2);
default:
return 0;
}
},
},
methods: {
onDraw(type, res) {
this.drawer.type = type;
this.drawer[type] = res;
this.drawer.mode = 'none';
},
showModal() {
const h = this.$createElement;
this.$success({
title: '当前圈选的范围',
content: h('a-textarea', {
attrs: {
style: 'height: 400px; font-family: monospace;',
},
props: {
value: JSON.stringify(this.drawer[this.drawer.type], null, ' '),
},
}),
});
},
},
watch: {
'drawer.mode'(mode) {
console.log('drawer.mode', mode);
if (mode !== 'none') {
const { drawer } = this;
drawer.type = 'none';
drawer.polygon = null;
drawer.circle = null;
drawer.rectangle = null;
}
},
},
};
</script>
<style lang="less" scoped>
.controls {
position: absolute;
left: 6px;
top: 0;
}
.info {
position: absolute;
right: 6px;
top: 0;
}
</style>
|
