<?xml version="1.0"?>

<PropertyList>

  <!-- OSG Particles -->
  <particlesystem>
    <name>contrail</name>

    <offsets>
      <x-m>  0.000 </x-m>
      <y-m>  0.000 </y-m>
      <z-m> -0.000 </z-m>
      <roll-deg>    0.000 </roll-deg>
      <pitch-deg>   90.000 </pitch-deg>
      <heading-deg> 0.000 </heading-deg>
    </offsets>

    <texture>smoke.png</texture>

    <condition><greater-than>
      <property>position/altitude-ft</property>
      <value>30000</value>
      </greater-than>
    </condition>

    <emissive>false</emissive>
    <lighting>true</lighting>
    <align>billboard</align> <!-- billboard / fixed -->
    <attach>world</attach> <!-- world / local-->


  <placer>
    <type>sector</type>
    <radius-min-m>0.2</radius-min-m>
    <radius-max-m>0.4</radius-max-m>
  </placer>

    <shooter>
      <theta-min-deg>10</theta-min-deg>
      <theta-max-deg>86</theta-max-deg>
      <phi-min-deg>-1.5</phi-min-deg>
      <phi-max-deg>8</phi-max-deg>
      <speed-mps>
        <value>0</value>
        <spread>2</spread>
      </speed-mps>
      <rotation-speed>
        <x-min-deg-sec>5</x-min-deg-sec>
        <y-min-deg-sec>5</y-min-deg-sec>
        <z-min-deg-sec>5</z-min-deg-sec>
        <x-max-deg-sec>60</x-max-deg-sec>
        <y-max-deg-sec>60</y-max-deg-sec>
        <z-max-deg-sec>60</z-max-deg-sec>
      </rotation-speed>
    </shooter>

    <counter>
      <particles-per-sec>
        <value>100</value>
        <spread>0</spread>
      </particles-per-sec>
    </counter>

    <particle>
      <start>
        <color>
          <red><value>1</value></red>
          <green><value>1</value></green>
          <blue><value>1</value></blue>
          <alpha><value>0.1</value></alpha>
        </color>
        <size>
          <value>0.6</value>
        </size>
      </start>

      <end>
        <color>
          <red><value>1</value></red>
          <green><value>1</value></green>
          <blue><value>0.8</value></blue>
          <alpha><value>0.0001</value></alpha>
        </color>
        <size>
          <value>10</value>
        </size>
      </end>

      <life-sec>
        <value>10</value>
      </life-sec>
       
      <mass-kg>0.0001</mass-kg>
      <radius-m>1</radius-m>
    </particle>
     
    <program>
      <fluid>air</fluid>         <!-- air / water -->
      <gravity>false</gravity>
      <wind>false</wind>
    </program>
     
  </particlesystem>

</PropertyList>
