Dynamic points
In this example we declaratively update points at 30FPS.
import React, { useState } from "react";
import "ol/ol.css";
import { Map } from "@react-ol/fiber";
import { useInterval } from "react-use";
import { Fill, Stroke, Style, RegularShape } from "ol/style";
export const stroke = new Stroke({ color: "black", width: 2 });
export const fill = new Fill({ color: "red" });
export const pointStyle = new Style({
image: new RegularShape({
fill,
stroke,
points: 4,
radius: 10,
angle: Math.PI / 4,
}),
});
export const ExampleDynamicPoints = () => {
const [location, setLocation] = useState([0, 6000000]);
useInterval(() => {
setLocation([100000 * Math.random(), 6000000 + 100000 * Math.random()]);
}, 1000 / 30);
return (
<Map>
<olView initialCenter={[0, 6000000]} initialZoom={6} />
<olLayerTile>
<olSourceOSM />
</olLayerTile>
<olLayerVector>
<olSourceVector>
<olFeature style={pointStyle}>
<olGeomPoint coordinates={location} />
</olFeature>
</olSourceVector>
</olLayerVector>
</Map>
);
};