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transform single strokes shapes into circles #39

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transform single strokes shapes into circles #39

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54 changes: 51 additions & 3 deletions src/TimezonePicker.js
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Original file line number Diff line number Diff line change
Expand Up @@ -35,7 +35,8 @@ export default class TimezonePicker {
hoverTextClass: "",
hoverTextEl: null,
hoverText: null,
dayLightSaving: ((typeof moment == "function") ? (true) : (false))
dayLightSaving: ((typeof moment == "function") ? (true) : (false)),
circlesRadius: 3
}

constructor(element, options) {
Expand Down Expand Up @@ -116,10 +117,57 @@ export default class TimezonePicker {
value.push($(el).data());
});
return value;
}
/**
* [transforms single-stroke shapes into circles - leaves other shapes as is]
* @param {[String]} rawPoints - points coordinates separated by comma
* @return {[String]}
*/
transformPoints(rawPoints) {
var coords = rawPoints.split(',');
if (coords.length <= 4) {
var intCoords = coords.map(function (a) { return parseInt(a); });
var center;

if (coords.length === 2) {
// single point: take it as the circle center
center = { x: intCoords[0], y: intCoords[2] };
} else if (coords.length === 4) {
// two points: take the stroke center as the circle center
var getCenter = function (a, b) { return a + ((b - a) / 2); };
center = {
x: getCenter(intCoords[0], intCoords[2]),
y: getCenter(intCoords[1], intCoords[3])
};
} else {
// strange case with incomplete points
return rawPoints;
}

var round2 = function (x) { return Math.round(x * 100) / 100; };

var points = [];
var _2pi = Math.PI * 2;
var nbSteps = 12;
var radius = options.circlesRadius || 3;
var stepSize = _2pi / nbSteps;
for (var angle = 0; angle < _2pi; angle += stepSize) {
points.push({
x: round2(center.x + Math.cos(angle) * radius),
y: round2(center.y + Math.sin(angle) * radius)
});
}

// serialize back the points into a single string
return points.reduce(function (prev, curr, index) {
return prev + (index === 0 ? '' : ',') + curr.x + ',' + curr.y;
}, '');
}
return rawPoints;
}
/**
* [generateMap create element dynamically]
* @param {[Object]} options [depanding on option it will create elements]
* @param {[Object]} options [depending on option it will create elements]
* @return {[Null]} [description]
*/
generateMap(options) {
Expand Down Expand Up @@ -148,7 +196,7 @@ export default class TimezonePicker {
'data-country': timezone[index].country,
'data-pin': timezone[index].pin,
'data-offset': timezone[index].offset,
'points': timezone[index].points,
'points': transformPoints(timezone[index].points),
'data-zonename': timezone[index].zonename
},
isSvg: true
Expand Down