Method parseCalc

src/StringParse.ts:45–60

(c: string, element: any, wH: any, baseRem: number)

    return isNegative ? -pV : pV;
  }
  public parseCalc(c: string, element: any, wH: any, baseRem: number): number {
    c = c.slice(5, -1);
    let ps = c.split(/([-+])/).filter(Boolean);
    return ps.reduce((t, p, i) => {
      if (p === '-' || p === '+') {
        return t;
      } else {
        let value = this.parseSingle(p.trim(), element, wH, baseRem);
        if (ps[i - 1] === '-') {
          return t - value;
        } else {
          return t + value;
        }
      }
    }, 0);
  }
  public parseOrigin(o: string) {
    if (o == null || o == "") {
      o = "center center"