fgdata/Aircraft/c172p/Models/Effects/lights/procedural-light-nav-tail.eff

<?xml version="1.0" encoding="utf-8"?>
<PropertyList>

    <name>procedural-light-nav-tail</name>
    <inherits-from>Effects/procedural-light</inherits-from>

    <parameters>
        <light_color_base_r type="float">0.790</light_color_base_r>
        <light_color_base_g type="float">0.790</light_color_base_g>
        <light_color_base_b type="float">1.000</light_color_base_b>
        <light_color_center_r type="float">1.0</light_color_center_r>
        <light_color_center_g type="float">1.0</light_color_center_g>
        <light_color_center_b type="float">1.0</light_color_center_b>
        <intensity_scale type="float">1.0</intensity_scale>

        <!-- Arc is 140 deg, is 70 deg per side -->
        <pointing_x type="float">-1.0</pointing_x>
        <pointing_y type="float">0.0</pointing_y>
        <pointing_z type="float">0.0</pointing_z>

        <is_directional type="bool">true</is_directional>
        <is_strobe type="bool">false</is_strobe>

        <!-- Angles are 0.0 at 0 deg from pointing direction, 1.0 at
             90/-90 deg, and 0.0 at 180/-180 deg.

             For tail navigation light we use -70/-50 .. +50/+70 for
             the inner/outer range. This gives an arc of 60/110 deg,
             or 30/55 deg from center.

             Value = sin(angle in degrees)

             0.76604444311 = 50 deg (* 2 = 50 deg inner angle)
             0.9396926207859083 = 70 deg (* 2 = 140 deg outer angle)
        -->
        <inner_angle type="float">0.76604444311</inner_angle>
        <outer_angle type="float">0.9396926207859083</outer_angle>
        <zero_angle type="float">0.9396926207859083</zero_angle>
        <outer_gain type="float">0.1</outer_gain>
    </parameters>

</PropertyList>