@antv/f2/es/deps/f2-scale/src/tick-method/linear.js

Charts for mobile visualization.

import { head, isNil, last } from '@antv/util';
import extended from '../util/extended';
import interval from '../util/interval';
import strictLimit from '../util/strict-limit';
/**
 * 计算线性的 ticks，使用 wilkinson extended 方法
 * @param cfg 度量的配置项
 * @returns 计算后的 ticks
 */
export default function linear(cfg) {
  var min = cfg.min,
    max = cfg.max,
    tickCount = cfg.tickCount,
    nice = cfg.nice,
    tickInterval = cfg.tickInterval,
    minLimit = cfg.minLimit,
    maxLimit = cfg.maxLimit;
  var ticks = extended(min, max, tickCount, nice).ticks;
  if (!isNil(minLimit) || !isNil(maxLimit)) {
    return strictLimit(cfg, head(ticks), last(ticks));
  }
  if (tickInterval) {
    return interval(min, max, tickInterval).ticks;
  }
  return ticks;
}