@antv/scale
Version:
Toolkit for mapping abstract data into visual representation.
40 lines • 1.26 kB
JavaScript
;
// 参考 d3-ticks nice 的实现
// https://github.com/d3/d3-scale
Object.defineProperty(exports, "__esModule", { value: true });
exports.d3LinearNice = void 0;
const ticks_1 = require("./ticks");
const d3LinearNice = (min, max, count = 5) => {
const d = [min, max];
let i0 = 0;
let i1 = d.length - 1;
let start = d[i0];
let stop = d[i1];
let step;
if (stop < start) {
[start, stop] = [stop, start];
[i0, i1] = [i1, i0];
}
step = (0, ticks_1.tickIncrement)(start, stop, count);
if (step > 0) {
start = Math.floor(start / step) * step;
stop = Math.ceil(stop / step) * step;
step = (0, ticks_1.tickIncrement)(start, stop, count);
}
else if (step < 0) {
start = Math.ceil(start * step) / step;
stop = Math.floor(stop * step) / step;
step = (0, ticks_1.tickIncrement)(start, stop, count);
}
if (step > 0) {
d[i0] = Math.floor(start / step) * step;
d[i1] = Math.ceil(stop / step) * step;
}
else if (step < 0) {
d[i0] = Math.ceil(start * step) / step;
d[i1] = Math.floor(stop * step) / step;
}
return d;
};
exports.d3LinearNice = d3LinearNice;
//# sourceMappingURL=d3-linear-nice.js.map