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L.SVG.include({
_updatecurve: function (layer) {
let svg_path = this._curvePointsToPath(layer._points);
this._setPath(layer, svg_path);
if (layer.options.animate) {
let path = layer._path;
let length = path.getTotalLength();
if (!layer.options.dashArray) {
path.style.strokeDasharray = length + ' ' + length;
}
if (layer._initialUpdate) {
path.animate([
{strokeDashoffset: length},
{strokeDashoffset: 0}
], layer.options.animate);
layer._initialUpdate = false;
}
}
return svg_path;
},
_curvePointsToPath: function (points) {
let point, curCommand, str = '';
for (let i = 0; i < points.length; i++) {
point = points[i];
if (typeof point === 'string' || point instanceof String) {
curCommand = point;
str += curCommand;
} else
str += point.x + ',' + point.y + ' ';
}
return str || 'M0 0';
},
});
let Bezier = L.Path.extend({
options: {},
initialize: function (path, icon, options) {
if (!path.mid || path.mid[0] === undefined) {
path.mid = this.getMidPoint(path.from, path.to, (path.from.deep ? path.from.deep : 4), path.from.slide);
}
L.setOptions(this, options);
this._initialUpdate = true;
this.setPath(path);
this.icon = icon;
},
//Juast after path is added
onAdd: function (map) {
this._renderer._initPath(this);
this._reset();
this._renderer._addPath(this);
// TODO ajust plane acording to zoom
map.on('zoom', function(){
});
},
// setAnimatePlane: function(path) {
// if (this.spaceship_img)
// this.spaceship_img.remove();
// let SnapSvg = Snap('.leaflet-overlay-pane>svg');
// let spaceship_img = this.spaceship_img = SnapSvg.image(this.icon.path).attr({
// visibility: "hidden"
// });
// let spaceship = SnapSvg.group(spaceship_img);
// let flight_path = SnapSvg.path(path).attr({
// 'fill': 'none',
// 'stroke': 'none'
// });
// let full_path_length = Snap.path.getTotalLength(flight_path);
// let half_path_length = full_path_length / 2;
// let third_path_length = full_path_length / 3;
// let forth_path_length = full_path_length / 4;
// let width = forth_path_length / this._map.getZoom();
// let height = forth_path_length / this._map.getZoom();
// width = Math.min(Math.max(width, 30), 64);
// height = Math.min(Math.max(height, 30), 64);
// let last_step = 0;
// Snap.animate(0, forth_path_length, function (step) {
// //show image when plane start to animate
// spaceship_img.attr({
// visibility: "visible"
// });
// spaceship_img.attr({width: width, height: height});
// last_step = step;
// let moveToPoint = Snap.path.getPointAtLength(flight_path, step);
// let x = moveToPoint.x - (width / 2);
// let y = moveToPoint.y - (height / 2);
// spaceship.transform('translate(' + x + ',' + y + ') rotate(' + (moveToPoint.alpha - 90) + ', ' + width / 2 + ', ' + height / 2 + ')');
// }, 2500, mina.easeout, function () {
// Snap.animate(forth_path_length, half_path_length, function (step) {
// last_step = step;
// let moveToPoint = Snap.path.getPointAtLength(flight_path, step);
// let x = moveToPoint.x - width / 2;
// let y = moveToPoint.y - height / 2;
// spaceship.transform('translate(' + x + ',' + y + ') rotate(' + (moveToPoint.alpha - 90) + ', ' + width / 2 + ', ' + height / 2 + ')');
// }, 7000, mina.easein, function () {
// //done
// });
// });
// },
getPath: function () {
return this._coords;
},
setPath: function (path) {
this._setPath(path);
return this.redraw();
},
getBounds: function () {
return this._bounds;
},
getMidPoint: function (from, to, deep, round_side = 'LEFT_ROUND') {
let offset = 3.14;
if (round_side === 'RIGHT_ROUND')
offset = offset * -1;
let latlngs = [];
let latlng1 = from,
latlng2 = to;
let offsetX = latlng2.lng - latlng1.lng,
offsetY = latlng2.lat - latlng1.lat;
let r = Math.sqrt(Math.pow(offsetX, 2) + Math.pow(offsetY, 2)),
theta = Math.atan2(offsetY, offsetX);
let thetaOffset = (offset / (deep ? deep : 4));
let r2 = (r / 2) / (Math.cos(thetaOffset)),
theta2 = theta + thetaOffset;
let midpointX = (r2 * Math.cos(theta2)) + latlng1.lng,
midpointY = (r2 * Math.sin(theta2)) + latlng1.lat;
let midpointLatLng = [midpointY, midpointX];
latlngs.push(latlng1, midpointLatLng, latlng2);
return midpointLatLng;
},
_setPath: function (path) {
this._coords = path;
this._bounds = this._computeBounds();
},
_computeBounds: function () {
let bound = new L.LatLngBounds();
bound.extend(this._coords.from);
bound.extend(this._coords.to);//for single destination
bound.extend(this._coords.mid);
return bound;
},
getCenter: function () {
return this._bounds.getCenter();
},
_update: function () {
if (!this._map) {
return;
}
this._updatePath();
},
_updatePath: function () {
//animated plane
let path = this._renderer._updatecurve(this);
// this.setAnimatePlane(path);
},
_project: function () {
this._points = [];
this._points.push('M');
let curPoint = this._map.latLngToLayerPoint(this._coords.from);
this._points.push(curPoint);
if (this._coords.mid) {
this._points.push('Q');
curPoint = this._map.latLngToLayerPoint(this._coords.mid);
this._points.push(curPoint);
}
curPoint = this._map.latLngToLayerPoint(this._coords.to);
this._points.push(curPoint);
},
});
L.bezier = function (config, options) {
let paths = [];
for (let i = 0; config.path.length > i; i++) {
let last_destination = false;
for (let c = 0; config.path[i].length > c; c++) {
let current_destination = config.path[i][c];
if (last_destination) {
let path_pair = {from: last_destination, to: current_destination};
paths.push(new Bezier(path_pair, config.icon, options));
}
last_destination = config.path[i][c];
}
}
return L.layerGroup(paths);
};
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