"Fossies" - the Fresh Open Source Software Archive  

Source code changes of the file "src/geometry/LineUtil.js" between
Leaflet-1.8.0.tar.gz and Leaflet-1.9.0.tar.gz

About: Leaflet is a JavaScript library for mobile-friendly interactive maps.

LineUtil.js  (Leaflet-1.8.0)	:	LineUtil.js  (Leaflet-1.9.0)
import {Point} from './Point';		import {Point, toPoint} from './Point';
import * as Util from '../core/Util';		import * as Util from '../core/Util';
		import {toLatLng} from '../geo/LatLng';
/*		/*
* @namespace LineUtil		* @namespace LineUtil
*		*
* Various utility functions for polyline points processing, used by Leaflet int ernally to make polylines lightning-fast.		* Various utility functions for polyline points processing, used by Leaflet int ernally to make polylines lightning-fast.
*/		*/
// Simplify polyline with vertex reduction and Douglas-Peucker simplification.		// Simplify polyline with vertex reduction and Douglas-Peucker simplification.
// Improves rendering performance dramatically by lessening the number of points to draw.		// Improves rendering performance dramatically by lessening the number of points to draw.
skipping to change at line 241		skipping to change at line 242
// @function isFlat(latlngs: LatLng[]): Boolean		// @function isFlat(latlngs: LatLng[]): Boolean
// Returns true if `latlngs` is a flat array, false is nested.		// Returns true if `latlngs` is a flat array, false is nested.
export function isFlat(latlngs) {		export function isFlat(latlngs) {
return !Util.isArray(latlngs[0]) || (typeof latlngs[0][0] !== 'object' && typeof latlngs[0][0] !== 'undefined');		return !Util.isArray(latlngs[0]) || (typeof latlngs[0][0] !== 'object' && typeof latlngs[0][0] !== 'undefined');
}		}
export function _flat(latlngs) {		export function _flat(latlngs) {
console.warn('Deprecated use of _flat, please use L.LineUtil.isFlat inste ad.');		console.warn('Deprecated use of _flat, please use L.LineUtil.isFlat inste ad.');
return isFlat(latlngs);		return isFlat(latlngs);
}		}
		/* @function polylineCenter(latlngs: LatLng[], crs: CRS): LatLng
		* Returns the center ([centroid](http://en.wikipedia.org/wiki/Centroid)) of the
		passed LatLngs (first ring) from a polyline.
		*/
		export function polylineCenter(latlngs, crs) {
		var i, halfDist, segDist, dist, p1, p2, ratio, center;
		if (!latlngs || latlngs.length === 0) {
		throw new Error('latlngs not passed');
		}
		if (!isFlat(latlngs)) {
		console.warn('latlngs are not flat! Only the first ring will be u
		sed');
		latlngs = latlngs[0];
		}
		var points = [];
		for (var j in latlngs) {
		points.push(crs.project(toLatLng(latlngs[j])));
		}
		var len = points.length;
		for (i = 0, halfDist = 0; i < len - 1; i++) {
		halfDist += points[i].distanceTo(points[i + 1]) / 2;
		}
		// The line is so small in the current view that all points are on the sa
		me pixel.
		if (halfDist === 0) {
		center = points[0];
		} else {
		for (i = 0, dist = 0; i < len - 1; i++) {
		p1 = points[i];
		p2 = points[i + 1];
		segDist = p1.distanceTo(p2);
		dist += segDist;
		if (dist > halfDist) {
		ratio = (dist - halfDist) / segDist;
		center = [
		p2.x - ratio * (p2.x - p1.x),
		p2.y - ratio * (p2.y - p1.y)
		];
		break;
		}
		}
		}
		return crs.unproject(toPoint(center));
		}
End of changes. 3 change blocks.
1 lines changed or deleted		2 lines changed or added

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