ion>
    <section class="desc markdown">
      <p>Whether the point specified by the given offset (which is assumed to be
relative to the origin) lies inside the rounded rectangle.</p>
<p>This method may allocate (and cache) a copy of the object with normalized
radii the first time it is called on a particular <a href="dart-ui/RRect-class.html">RRect</a> instance. When
using this method, prefer to reuse existing <a href="dart-ui/RRect-class.html">RRect</a>s rather than
recreating the object each time.</p>
 