vue+openlayers 绘制点

<template>
    <div class="setting">
        <div class="title">设置</div>
        <ul>
            <li>
                <p>边框大小：</p>
                <el-input-number v-model="borderWidth" controls-position="right" size="mini" @change="changeVector"></el-input-number>
            </li>
            <li>
                <p>边框颜色：</p>
                <el-color-picker v-model="borderColor" show-alpha size="mini" @change="changeVector"></el-color-picker>
            </li>
            <li>
                <p>内部颜色：</p>
                <el-color-picker v-model="fillColor" show-alpha size="mini" @change="changeVector"></el-color-picker>
            </li>
            <li>
                <p>大小：</p>
                <el-input-number v-model="radius" controls-position="right" size="mini" @change="changeVector"></el-input-number>
            </li>
            
        </ul>
    </div>
</template>
<script>
import { Point } from 'ol/geom';
import Feature from 'ol/Feature';
import VectorLayer from 'ol/layer/Vector.js';
import VectorSource from 'ol/source/Vector.js';
import { Circle, Fill, Stroke, Style } from "ol/style";
export default {
    name: "pointPage",
    data() {
        return {
            // 边框大小
            borderWidth: 1,
            // 边框颜色
            borderColor: '#000',
            // 内部颜色
            fillColor: "#000",
            // 大小
            radius: 5,
            vector: null
        }
    },
    created() {
        this.drawPoint()
    },
    methods: {
        /**
         * 绘制点
         */
        drawPoint() {
            const map  = window._map
            const stroke = new Stroke({
                color: this.borderColor,
                width: this.borderWidth
            })
            const fill = new Fill({
                color: this.fillColor
            })
            const style = new Style({
                image: new Circle({
                    fill: fill,
                    stroke: stroke,
                    radius: this.radius,
                }),
            })
            const source = new VectorSource({});
            this.vector = new VectorLayer({
                style: style,
                source: source,
                id: 'point',
                className: 'point'
            });
            map.addLayer(this.vector)
            let coordinate = [108.885436, 30.054604]
            let point = new Point(coordinate);

            let feature = new Feature({
                geometry: point
            });
            // 把要素集合添加到源 addFeatures
            source.addFeature(feature);
        },
        /**修改样式
         * 
         * @param {*} value 
         * @param {*} type 
         */
        changeVector() {
            const stroke = new Stroke({
                color: this.borderColor,
                width: this.borderWidth
            })
            const fill = new Fill({
                color: this.fillColor
            })
            const style = new Style({
                image: new Circle({
                    fill: fill,
                    stroke: stroke,
                    radius: this.radius,
                }),
            })
            this.vector.setStyle(style)
        }
    }
}
</script>
<style scoped>
    .setting {
        position: absolute;
        left: 10px;
        top: 10px;
        width: 300px;
        background: #FFFFFF;
        box-shadow: 0px 0px 20px 0px rgba(51,79,124,0.25);
        z-index: 10;
    }
    .title {
        height: 30px;
        line-height: 30px;
        border-bottom: 1px solid rgba(0, 125, 255, .1);  
        font-size: 14px;
        padding: 0 10px;
        color: #1556C6;
        text-align: left;
        background: linear-gradient(177deg, #63B1FA 0%, #007DFF 100%);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent
    }
    ul {
       margin: 0;
       padding: 0; 
    }
    ul li {
        display: flex;
        justify-content: flex-start;
        padding: 10px 20px;
        font-size: 12px;

    }
    p {
        margin: 0;
        line-height: 28px;
    }
</style>