LiveAtlas/src/util/circles.ts

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/*
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* Copyright 2021 James Lyne
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*
* Some portions of this file were taken from https://github.com/webbukkit/dynmap.
* These portions are Copyright 2020 Dynmap Contributors.
*
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* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
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*/
import {LatLngExpression} from "leaflet";
import LiveAtlasPolyline from "@/leaflet/vector/LiveAtlasPolyline";
import LiveAtlasPolygon from "@/leaflet/vector/LiveAtlasPolygon";
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import {LiveAtlasCircle} from "@/index";
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import {createPopup, tooltipOptions} from "@/util/paths";
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export const createCircle = (options: LiveAtlasCircle, converter: Function): LiveAtlasPolyline | LiveAtlasPolygon => {
const outline = !options.style.fillOpacity || (options.style.fillOpacity <= 0),
points = getCirclePoints(options, converter, outline),
circle = outline ? new LiveAtlasPolyline(points, options) : new LiveAtlasPolygon(points, options);
if(options.popupContent) {
circle.bindPopup(() => createPopup(options, 'CirclePopup'));
}
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if (options.tooltipContent) {
circle.bindTooltip(() => options.tooltipContent, tooltipOptions);
}
return circle;
};
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export const updateCircle = (circle: LiveAtlasPolyline | LiveAtlasPolygon | undefined, options: LiveAtlasCircle, converter: Function): LiveAtlasPolyline | LiveAtlasPolygon => {
if (!circle) {
return createCircle(options, converter);
}
const outline = (options.style && options.style.fillOpacity && (options.style.fillOpacity <= 0)) as boolean;
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circle.closePopup();
circle.unbindPopup();
circle.bindPopup(() => createPopup(options, 'CirclePopup'));
circle.setStyle(options.style);
circle.setLatLngs(getCirclePoints(options, converter, outline));
circle.redraw();
return circle;
}
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export const getCirclePoints = (options: LiveAtlasCircle, converter: Function, outline: boolean): LatLngExpression[] => {
const points = [];
for(let i = 0; i < 360; i++) {
const rad = i * Math.PI / 180.0,
x = options.radius[0] * Math.sin(rad) + options.location.x,
z = options.radius[1] * Math.cos(rad) + options.location.z;
points.push(converter({x, y:options.location.y, z}));
}
if(outline && points.length) {
points.push(points[0]);
}
return points;
};