Function isTwoLabelOverlapped

_benchmarks/sample_echarts.js:47310–47326

(current, next)

    }

    function isTwoLabelOverlapped(current, next) {
      // current and next has the same rotation.
      var firstRect = current && current.getBoundingRect().clone();
      var nextRect = next && next.getBoundingRect().clone();

      if (!firstRect || !nextRect) {
        return;
      } // When checking intersect of two rotated labels, we use mRotationBack
      // to avoid that boundingRect is enlarge when using `boundingRect.applyTransform`.


      var mRotationBack = identity([]);
      rotate(mRotationBack, mRotationBack, -current.rotation);
      firstRect.applyTransform(mul$1([], mRotationBack, current.getLocalTransform()));
      nextRect.applyTransform(mul$1([], mRotationBack, next.getLocalTransform()));
      return firstRect.intersect(nextRect);
    }

    function isNameLocationCenter(nameLocation) {
      return nameLocation === 'middle' || nameLocation === 'center';