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add comments; clean up

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alexcojocaru 2020-10-25 20:11:33 -07:00
parent bd0679d15c
commit 75b68ebfe1
1 changed files with 38 additions and 27 deletions
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65
js/plugin/Heightgraph.js
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@ -163,8 +163,12 @@ BR.Heightgraph = function(map, layersControl, routing, pois) {
// this is going to be initialized in the first iteration
var currentFeature;
// undefined is fine, as it will be different than the next gradient
// undefined is fine, as it will be different than the current gradient
// in the first iteration
var previousGradient;
// each feature starts with the last point on the previous feature;
// this will also take care of inserting the firstmost point
// (latLngs[0]) at position 0 into the first feature in the list
for (var i = 1; i < latLngs.length; i++) {
var previousPoint = latLngs[i - 1];
var currentPoint = latLngs[i];
@ -174,36 +178,30 @@ BR.Heightgraph = function(map, layersControl, routing, pois) {
var currentGradientPercentage = (altDelta * 100) / dist;
var currentGradient = dist == 0 ? 0 : this._mapGradient(currentGradientPercentage);
// TODO
/*
console.log("gradient %:", currentGradientPercentage,
"; gradient level:", currentGradient,
"; dist:", dist,
"; alt:", altDelta,
"; previous point:", previousPoint.lng, previousPoint.lat, previousPoint.alt,
"; current point:", currentPoint.lng, currentPoint.lat, currentPoint.alt);
*/
var coordinate = [currentPoint.lng, currentPoint.lat, currentPoint.alt];
console.log(
'gradient %:',
currentGradientPercentage,
'; gradient level:',
currentGradient,
'; dist:',
dist,
'; alt:',
altDelta,
'; previous point:',
previousPoint.lng,
previousPoint.lat,
previousPoint.alt,
'; current point:',
currentPoint.lng,
currentPoint.lat,
currentPoint.alt
);
if (currentGradient == previousGradient) {
var coordinate = [currentPoint.lng, currentPoint.lat, currentPoint.alt];
currentFeature.geometry.coordinates.push(coordinate);
} else {
currentFeature = {
type: 'Feature',
geometry: {
type: 'LineString',
coordinates: [
// each feature starts with the last point on the previous feature;
// that will also take care of inserting the firstmost point
// (latLngs[0]) at position 0 into the first feature in the list
[previousPoint.lng, previousPoint.lat, previousPoint.alt],
coordinate
]
},
properties: {
attributeType: currentGradient
}
};
currentFeature = this._buildFeature(previousPoint, currentPoint, currentGradient);
features.push(currentFeature);
}
@ -224,6 +222,19 @@ BR.Heightgraph = function(map, layersControl, routing, pois) {
];
},
_buildFeature: function(point1, point2, gradient) {
return {
type: 'Feature',
geometry: {
type: 'LineString',
coordinates: [[point1.lng, point1.lat, point1.alt], [point2.lng, point2.lat, point2.alt]]
},
properties: {
attributeType: gradient
}
};
},
/**
* Map a gradient percentage to one of the levels defined
* in options.mappings.gradient.