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map: rearrange code a bit, fix arrows on paths

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This commit is contained in:
Adam Goldsmith 2018-07-19 11:49:55 -04:00
parent 8ac715b787
commit 1aa1852b2d
1 changed files with 62 additions and 49 deletions
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111
src/map.js
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@ -9,7 +9,7 @@ import Projection from 'ol/proj/Projection';
import {LineString, Point} from 'ol/geom';
import {readFileSync} from 'fs';
const packets = readFileSync(__dirname + '/../IS_packets.txt', 'utf-8');
const packetLog = readFileSync(__dirname + '/../IS_packets.txt', 'utf-8');
import {APRSParser} from 'aprs-parser';
@ -53,54 +53,67 @@ let colorGen = {
}
};
let lines = packets.split("\n");
lines
// restrict to just prouty times
.filter(line => {
let date = new Date(line.slice(0,18));
return date > new Date("2018-07-14") && date < new Date("2018-07-15");
})
// parse to APRS packet
.map(line => parser.parse(line.slice(29)))
// filter by callsign
.filter(packet => (packet.from !== undefined) &&
(packet.from.toString() === "W1HS-9"))
// filter to just positional data
.filter(packet => 'data' in packet && 'latitude' in packet.data)
// join into Arrays of points
.reduce((acc, packet) => {
if (!acc.has(packet.from.toString())) acc.set(packet.from.toString(), []);
acc.get(packet.from.toString()).push([packet.data.longitude,
packet.data.latitude]);
return acc;
}, new Map())
// plot on map
.forEach((points, callsign, map) => {
let pathFeature = new Feature(new LineString(points));
let styles = [
new Style({stroke: new Stroke(
{color: 'hsl(' + colorGen.get(map.size) + ', 75%, 50%)', width: 2})})];
function pathStyle(feature) {
let styles = [
new Style({stroke: new Stroke(
{color: 'hsl(' + feature.getProperties().hue + ', 75%, 50%)', width: 2}
)})
];
pathFeature.getGeometry().forEachSegment((start, end) => {
let dx = end[0] - start[0];
let dy = end[1] - start[1];
let rotation = Math.atan2(dy, dx);
// arrows
styles.push(new Style({
geometry: new Point(end),
image: new Icon({
src: icon,
anchor: [0.75, 0.5],
rotateWithView: true,
rotation: -rotation
})
}));
});
pathFeature.setStyle(styles);
vector_layer.getSource().addFeature(pathFeature);
pathFeature.getGeometry().transform(new Projection({code: "EPSG:4326"}),
tile_layer.getSource().getProjection());
feature.getGeometry().forEachSegment((start, end) => {
let dx = end[0] - start[0];
let dy = end[1] - start[1];
let rotation = Math.atan2(dy, dx);
// arrows
styles.push(new Style({
geometry: new Point(end),
image: new Icon({
src: icon,
anchor: [0.75, 0.5],
rotateWithView: true,
rotation: -rotation
})
}));
});
return styles;
}
function plotPaths(packets) {
packets
// filter by callsign
.filter(packet => (packet.from !== undefined) &&
(packet.from.toString() === "W1HS-9"))
// filter to just positional data
.filter(packet => 'data' in packet && 'latitude' in packet.data)
// join into Arrays of points
.reduce((acc, packet) => {
if (!acc.has(packet.from.toString())) acc.set(packet.from.toString(), []);
acc.get(packet.from.toString()).push([packet.data.longitude,
packet.data.latitude]);
return acc;
}, new Map())
// plot on map
.forEach((points, callsign, map) => {
let pathFeature = new Feature({
geometry: new LineString(points),
hue: colorGen.get(map.size)
});
pathFeature.setStyle(pathStyle);
vector_layer.getSource().addFeature(pathFeature);
pathFeature.getGeometry().transform(new Projection({code: "EPSG:4326"}),
tile_layer.getSource().getProjection());
});
}
let packets = packetLog.split("\n")
// restrict to just prouty times
.filter(line => {
let date = new Date(line.slice(0,18));
return date > new Date("2018-07-14") && date < new Date("2018-07-15");
})
// parse to APRS packet
.map(line => parser.parse(line.slice(29)));
plotPaths(packets);