VisibilitySensor

<xs:element name="VisibilitySensor">
  <xs:annotation>
    <xs:appinfo>
      <xs:attribute name="enterTime" type="SFTime" fixed="outputOnlyField"/>
      <xs:attribute name="exitTime" type="SFTime" fixed="outputOnlyField"/>
      <xs:attribute name="componentName" type="xs:NMTOKEN" fixed="EnvironmentalSensor"/>
      <xs:attribute name="componentLevel" type="xs:positiveInteger" fixed="2"/>
    </xs:appinfo>
    <xs:documentation source="http://www.web3d.org/documents/specifications/19775-1/V3.3/Part01/components/envsensor.html#VisibilitySensor"/>
  </xs:annotation>
  <xs:complexType>
    <xs:complexContent>
      <xs:extension base="X3DEnvironmentalSensorNode">
        <xs:attribute name="center" type="SFVec3f" default="0 0 0"/>
        <xs:attribute name="containerField" type="xs:NMTOKEN" default="children"/>
      </xs:extension>
    </xs:complexContent>
  </xs:complexType>
</xs:element>