ag-charts-community
Version:
Advanced Charting / Charts supporting Javascript / Typescript / React / Angular / Vue
65 lines • 2.1 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
const continuousScale_1 = require("./continuousScale");
const ticks_1 = require("../util/ticks");
const numberFormat_1 = require("../util/numberFormat");
/**
* Maps continuous domain to a continuous range.
*/
class LinearScale extends continuousScale_1.ContinuousScale {
constructor() {
super(...arguments);
this.type = 'linear';
}
ticks(count = 10) {
const d = this._domain;
return ticks_1.default(d[0], d[d.length - 1], count);
}
/**
* Extends the domain so that it starts and ends on nice round values.
* @param count Tick count.
*/
nice(count = 10) {
const d = this.domain;
let i0 = 0;
let i1 = d.length - 1;
let start = d[i0];
let stop = d[i1];
let step;
if (stop < start) {
step = start;
start = stop;
stop = step;
step = i0;
i0 = i1;
i1 = step;
}
step = ticks_1.tickIncrement(start, stop, count);
if (step > 0) {
start = Math.floor(start / step) * step;
stop = Math.ceil(stop / step) * step;
step = ticks_1.tickIncrement(start, stop, count);
}
else if (step < 0) {
start = Math.ceil(start * step) / step;
stop = Math.floor(stop * step) / step;
step = ticks_1.tickIncrement(start, stop, count);
}
if (step > 0) {
d[i0] = Math.floor(start / step) * step;
d[i1] = Math.ceil(stop / step) * step;
this.domain = d;
}
else if (step < 0) {
d[i0] = Math.ceil(start * step) / step;
d[i1] = Math.floor(stop * step) / step;
this.domain = d;
}
}
tickFormat(count, specifier) {
const d = this.domain;
return numberFormat_1.tickFormat(d[0], d[d.length - 1], count == undefined ? 10 : count, specifier);
}
}
exports.LinearScale = LinearScale;
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