mirror of
https://github.com/placeAtlas/atlas.git
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804159e116
The lengthy boilerplate is unnecessary, especially since it is already linked. The type of license can stay there instead.
60 lines
No EOL
1.9 KiB
JavaScript
60 lines
No EOL
1.9 KiB
JavaScript
/*
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========================================================================
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The 2022 /r/place Atlas
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An Atlas of Reddit's 2022 /r/place, with information to each
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artwork of the canvas provided by the community.
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Copyright (c) 2017 Roland Rytz <roland@draemm.li>
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Copyright (c) 2022 r/placeAtlas2 contributors
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Licensed under the GNU Affero General Public License Version 3
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https://place-atlas.stefanocoding.me/license.txt
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========================================================================
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*/
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window.addEventListener("error", function (e) {
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console.log(e);
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var errorMessage = "<p class=\"error\">An error has occurred:</p>";
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errorMessage += "<p class=\"errorBody\">" + e.message + "</p>";
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errorMessage += "<p class=\"errorBody\">on line " + e.lineno + "</p>";
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errorMessage += "<p class=\"error\">If this keeps happening, feel free to send me a <a href=\"mailto:roland.rytz@gmail.com\">mail</a>.</p>";
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document.getElementById("loadingContent").innerHTML = errorMessage;
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});
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function getPositionOfEntry(entry){
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let startX = 2000, startY = 2000;
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for(let [x, y] of entry.path){
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startX = Math.min(x, startX);
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startY = Math.min(y, startY)
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}
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if(startX === 2000 || startY === 2000) return null;
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return [parseInt(startX), parseInt(startY)];
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}
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const areaMap = new Map();
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// Modified from https://stackoverflow.com/a/33670691
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function calcPolygonArea(vertices) {
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var hit = areaMap.get(vertices);
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if (hit != null) {
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return hit;
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}
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var total = 0;
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for (var i = 0, l = vertices.length; i < l; i++) {
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var addX = vertices[i][0];
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var addY = vertices[i == vertices.length - 1 ? 0 : i + 1][1];
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var subX = vertices[i == vertices.length - 1 ? 0 : i + 1][0];
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var subY = vertices[i][1];
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total += (addX * addY * 0.5);
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total -= (subX * subY * 0.5);
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}
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var area = Math.floor(Math.abs(total));
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areaMap.set(vertices, area);
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return area;
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} |