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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-14 13:24:15 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-14 13:24:15 +0000 |
commit | f7fa67dcc49b0b50ae2323b13facac69f2b5e495 (patch) | |
tree | b57cfa4095263521138ba8d3b372d91d99487a3e /debian/missing-sources/leaflet.markercluster.js/MarkerCluster.QuickHull.js | |
parent | Adding upstream version 1.1.0. (diff) | |
download | icingaweb2-module-map-debian.tar.xz icingaweb2-module-map-debian.zip |
Adding debian version 1.1.0-4.debian/1.1.0-4debian
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'debian/missing-sources/leaflet.markercluster.js/MarkerCluster.QuickHull.js')
-rw-r--r-- | debian/missing-sources/leaflet.markercluster.js/MarkerCluster.QuickHull.js | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/debian/missing-sources/leaflet.markercluster.js/MarkerCluster.QuickHull.js b/debian/missing-sources/leaflet.markercluster.js/MarkerCluster.QuickHull.js new file mode 100644 index 0000000..741c521 --- /dev/null +++ b/debian/missing-sources/leaflet.markercluster.js/MarkerCluster.QuickHull.js @@ -0,0 +1,165 @@ +/* Copyright (c) 2012 the authors listed at the following URL, and/or +the authors of referenced articles or incorporated external code: +http://en.literateprograms.org/Quickhull_(Javascript)?action=history&offset=20120410175256 + +Permission is hereby granted, free of charge, to any person obtaining +a copy of this software and associated documentation files (the +"Software"), to deal in the Software without restriction, including +without limitation the rights to use, copy, modify, merge, publish, +distribute, sublicense, and/or sell copies of the Software, and to +permit persons to whom the Software is furnished to do so, subject to +the following conditions: + +The above copyright notice and this permission notice shall be +included in all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. +IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY +CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, +TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE +SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + +Retrieved from: http://en.literateprograms.org/Quickhull_(Javascript)?oldid=18434 +*/ + +(function () { + L.QuickHull = { + + /* + * @param {Object} cpt a point to be measured from the baseline + * @param {Array} bl the baseline, as represented by a two-element + * array of latlng objects. + * @returns {Number} an approximate distance measure + */ + getDistant: function (cpt, bl) { + var vY = bl[1].lat - bl[0].lat, + vX = bl[0].lng - bl[1].lng; + return (vX * (cpt.lat - bl[0].lat) + vY * (cpt.lng - bl[0].lng)); + }, + + /* + * @param {Array} baseLine a two-element array of latlng objects + * representing the baseline to project from + * @param {Array} latLngs an array of latlng objects + * @returns {Object} the maximum point and all new points to stay + * in consideration for the hull. + */ + findMostDistantPointFromBaseLine: function (baseLine, latLngs) { + var maxD = 0, + maxPt = null, + newPoints = [], + i, pt, d; + + for (i = latLngs.length - 1; i >= 0; i--) { + pt = latLngs[i]; + d = this.getDistant(pt, baseLine); + + if (d > 0) { + newPoints.push(pt); + } else { + continue; + } + + if (d > maxD) { + maxD = d; + maxPt = pt; + } + } + + return { maxPoint: maxPt, newPoints: newPoints }; + }, + + + /* + * Given a baseline, compute the convex hull of latLngs as an array + * of latLngs. + * + * @param {Array} latLngs + * @returns {Array} + */ + buildConvexHull: function (baseLine, latLngs) { + var convexHullBaseLines = [], + t = this.findMostDistantPointFromBaseLine(baseLine, latLngs); + + if (t.maxPoint) { // if there is still a point "outside" the base line + convexHullBaseLines = + convexHullBaseLines.concat( + this.buildConvexHull([baseLine[0], t.maxPoint], t.newPoints) + ); + convexHullBaseLines = + convexHullBaseLines.concat( + this.buildConvexHull([t.maxPoint, baseLine[1]], t.newPoints) + ); + return convexHullBaseLines; + } else { // if there is no more point "outside" the base line, the current base line is part of the convex hull + return [baseLine[0]]; + } + }, + + /* + * Given an array of latlngs, compute a convex hull as an array + * of latlngs + * + * @param {Array} latLngs + * @returns {Array} + */ + getConvexHull: function (latLngs) { + // find first baseline + var maxLat = false, minLat = false, + maxLng = false, minLng = false, + maxLatPt = null, minLatPt = null, + maxLngPt = null, minLngPt = null, + maxPt = null, minPt = null, + i; + + for (i = latLngs.length - 1; i >= 0; i--) { + var pt = latLngs[i]; + if (maxLat === false || pt.lat > maxLat) { + maxLatPt = pt; + maxLat = pt.lat; + } + if (minLat === false || pt.lat < minLat) { + minLatPt = pt; + minLat = pt.lat; + } + if (maxLng === false || pt.lng > maxLng) { + maxLngPt = pt; + maxLng = pt.lng; + } + if (minLng === false || pt.lng < minLng) { + minLngPt = pt; + minLng = pt.lng; + } + } + + if (minLat !== maxLat) { + minPt = minLatPt; + maxPt = maxLatPt; + } else { + minPt = minLngPt; + maxPt = maxLngPt; + } + + var ch = [].concat(this.buildConvexHull([minPt, maxPt], latLngs), + this.buildConvexHull([maxPt, minPt], latLngs)); + return ch; + } + }; +}()); + +L.MarkerCluster.include({ + getConvexHull: function () { + var childMarkers = this.getAllChildMarkers(), + points = [], + p, i; + + for (i = childMarkers.length - 1; i >= 0; i--) { + p = childMarkers[i].getLatLng(); + points.push(p); + } + + return L.QuickHull.getConvexHull(points); + } +}); |