[请问]如何判断一条polyline是否闭合？
<p>[请问]如何判断一条polyline是否闭合？</p><p>谢谢！</p> <p class="signature">Adesk::Boolean</p><p class="signature">isClosed() const;</p><p>This function returns Adesk::kTrue if the polyline is closed or Adesk::kFalse if not. If it is closed, then the last vertex will be considered connected to the first vertex by a segment; otherwise, the last and first vertices are not connected by a segment</p><p>//</p><p>you can look up the reference</p>
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