TDataView_ui/scripts/vendor/map23dlib/leaflet.heat.js

/*
 (c) 2014, Vladimir Agafonkin
 simpleheat, a tiny JavaScript library for drawing heatmaps with Canvas
 https://github.com/mourner/simpleheat
*/
! function() { "use strict";

    function t(i) {
        return this instanceof t ? (this._canvas = i = "string" == typeof i ? document.getElementById(i) : i, this._ctx = i.getContext("2d"), this._width = i.width, this._height = i.height, this._max = 1, void this.clear()) : new t(i) }
    t.prototype = { defaultRadius: 25, defaultGradient: { .4: "blue", .6: "cyan", .7: "lime", .8: "yellow", 1: "red" }, data: function(t, i) {
            return this._data = t, this }, max: function(t) {
            return this._max = t, this }, add: function(t) {
            return this._data.push(t), this }, clear: function() {
            return this._data = [], this }, radius: function(t, i) { i = i || 15;
            var a = this._circle = document.createElement("canvas"),
                s = a.getContext("2d"),
                e = this._r = t + i;
            return a.width = a.height = 2 * e, s.shadowOffsetX = s.shadowOffsetY = 200, s.shadowBlur = i, s.shadowColor = "black", s.beginPath(), s.arc(e - 200, e - 200, t, 0, 2 * Math.PI, !0), s.closePath(), s.fill(), this }, gradient: function(t) {
            var i = document.createElement("canvas"),
                a = i.getContext("2d"),
                s = a.createLinearGradient(0, 0, 0, 256);
            i.width = 1, i.height = 256;
            for (var e in t) s.addColorStop(e, t[e]);
            return a.fillStyle = s, a.fillRect(0, 0, 1, 256), this._grad = a.getImageData(0, 0, 1, 256).data, this }, draw: function(t) { this._circle || this.radius(this.defaultRadius), this._grad || this.gradient(this.defaultGradient);
            var i = this._ctx;
            i.clearRect(0, 0, this._width, this._height);
            for (var a, s = 0, e = this._data.length; e > s; s++) a = this._data[s], i.globalAlpha = Math.max(a[2] / this._max, t || .05), i.drawImage(this._circle, a[0] - this._r, a[1] - this._r);
            var n = i.getImageData(0, 0, this._width, this._height);
            return this._colorize(n.data, this._grad), i.putImageData(n, 0, 0), this }, _colorize: function(t, i) {
            for (var a, s = 3, e = t.length; e > s; s += 4) a = 4 * t[s], a && (t[s - 3] = i[a], t[s - 2] = i[a + 1], t[s - 1] = i[a + 2]) } }, window.simpleheat = t }(),
/*
 (c) 2014, Vladimir Agafonkin
 Leaflet.heat, a tiny and fast heatmap plugin for Leaflet.
 https://github.com/Leaflet/Leaflet.heat
*/
L.HeatLayer = (L.Layer ? L.Layer : L.Class).extend({ initialize: function(t, i) { this._latlngs = t, L.setOptions(this, i) }, setLatLngs: function(t) {
        return this._latlngs = t, this.redraw() }, addLatLng: function(t) {
        return this._latlngs.push(t), this.redraw() }, setOptions: function(t) {
        return L.setOptions(this, t), this._heat && this._updateOptions(), this.redraw() }, redraw: function() {
        return !this._heat || this._frame || this._map._animating || (this._frame = L.Util.requestAnimFrame(this._redraw, this)), this }, onAdd: function(t) { this._map = t, this._canvas || this._initCanvas(), t._panes.overlayPane.appendChild(this._canvas), t.on("moveend", this._reset, this), t.options.zoomAnimation && L.Browser.any3d && t.on("zoomanim", this._animateZoom, this), this._reset() }, onRemove: function(t) { t.getPanes().overlayPane.removeChild(this._canvas), t.off("moveend", this._reset, this), t.options.zoomAnimation && t.off("zoomanim", this._animateZoom, this) }, addTo: function(t) {
        return t.addLayer(this), this }, _initCanvas: function() {
        var t = this._canvas = L.DomUtil.create("canvas", "leaflet-heatmap-layer leaflet-layer"),
            i = L.DomUtil.testProp(["transformOrigin", "WebkitTransformOrigin", "msTransformOrigin"]);
        t.style[i] = "50% 50%";
        var a = this._map.getSize();
        t.width = a.x, t.height = a.y;
        var s = this._map.options.zoomAnimation && L.Browser.any3d;
        L.DomUtil.addClass(t, "leaflet-zoom-" + (s ? "animated" : "hide")), this._heat = simpleheat(t), this._updateOptions() }, _updateOptions: function() { this._heat.radius(this.options.radius || this._heat.defaultRadius, this.options.blur), this.options.gradient && this._heat.gradient(this.options.gradient), this.options.max && this._heat.max(this.options.max) }, _reset: function() {
        var t = this._map.containerPointToLayerPoint([0, 0]);
        L.DomUtil.setPosition(this._canvas, t);
        var i = this._map.getSize();
        this._heat._width !== i.x && (this._canvas.width = this._heat._width = i.x), this._heat._height !== i.y && (this._canvas.height = this._heat._height = i.y), this._redraw() }, _redraw: function() {
        var t, i, a, s, e, n, h, o, r, d = [],
            _ = this._heat._r,
            l = this._map.getSize(),
            m = new L.Bounds(L.point([-_, -_]), l.add([_, _])),
            c = void 0 === this.options.max ? 1 : this.options.max,
            u = void 0 === this.options.maxZoom ? this._map.getMaxZoom() : this.options.maxZoom,
            f = 1 / Math.pow(2, Math.max(0, Math.min(u - this._map.getZoom(), 12))),
            g = _ / 2,
            p = [],
            v = this._map._getMapPanePos(),
            w = v.x % g,
            y = v.y % g;
        for (t = 0, i = this._latlngs.length; i > t; t++)
            if (a = this._map.latLngToContainerPoint(this._latlngs[t]), m.contains(a)) { e = Math.floor((a.x - w) / g) + 2, n = Math.floor((a.y - y) / g) + 2;
                var x = void 0 !== this._latlngs[t].alt ? this._latlngs[t].alt : void 0 !== this._latlngs[t][2] ? +this._latlngs[t][2] : 1;
                r = x * f, p[n] = p[n] || [], s = p[n][e], s ? (s[0] = (s[0] * s[2] + a.x * r) / (s[2] + r), s[1] = (s[1] * s[2] + a.y * r) / (s[2] + r), s[2] += r) : p[n][e] = [a.x, a.y, r] }
        for (t = 0, i = p.length; i > t; t++)
            if (p[t])
                for (h = 0, o = p[t].length; o > h; h++) s = p[t][h], s && d.push([Math.round(s[0]), Math.round(s[1]), Math.min(s[2], c)]);
        this._heat.data(d).draw(this.options.minOpacity), this._frame = null }, _animateZoom: function(t) {
        var i = this._map.getZoomScale(t.zoom),
            a = this._map._getCenterOffset(t.center)._multiplyBy(-i).subtract(this._map._getMapPanePos());
        L.DomUtil.setTransform ? L.DomUtil.setTransform(this._canvas, a, i) : this._canvas.style[L.DomUtil.TRANSFORM] = L.DomUtil.getTranslateString(a) + " scale(" + i + ")" } }), L.heatLayer = function(t, i) {
    return new L.HeatLayer(t, i) };