@antv/f2
Version:
Charts for mobile visualization.
29 lines • 1.01 kB
JavaScript
import { getTickInterval } from '../util/time';
export default function calculateTimeTicks(cfg) {
var min = cfg.min,
max = cfg.max,
minTickInterval = cfg.minTickInterval;
var tickInterval = cfg.tickInterval;
var tickCount = cfg.tickCount;
// 指定 tickInterval 后 tickCount 不生效，需要重新计算
if (tickInterval) {
tickCount = Math.ceil((max - min) / tickInterval);
} else {
tickInterval = getTickInterval(min, max, tickCount)[1];
var count = (max - min) / tickInterval;
var ratio = count / tickCount;
if (ratio > 1) {
tickInterval = tickInterval * Math.ceil(ratio);
}
// 如果设置了最小间距，则使用最小间距
if (minTickInterval && tickInterval < minTickInterval) {
tickInterval = minTickInterval;
}
}
tickInterval = Math.max(Math.floor((max - min) / (Math.pow(2, 12) - 1)), tickInterval);
var ticks = [];
for (var i = min; i < max + tickInterval; i += tickInterval) {
ticks.push(i);
}
return ticks;
}