Function IsVerySmallTriangle

3rdparty/clipper2/src/clipper.engine.cpp:441–447

  }

  inline bool IsVerySmallTriangle(const OutPt& op)
  {
    return op.next->next == op.prev &&
      (PtsReallyClose(op.prev->pt, op.next->pt) ||
        PtsReallyClose(op.pt, op.next->pt) ||
        PtsReallyClose(op.pt, op.prev->pt));
  }

  inline bool IsValidClosedPath(const OutPt* op)
  {