Fix shared library build for metar executable

[flightgear.git] / src / Time / light.cxx

diff --git a/src/Time/light.cxx b/src/Time/light.cxx
index 99c8e5b65676935d390d7e79ed0c12ea391ab99a..c43ec333f6ea2b1554beae4db88ed06bb0fe0a3a 100644 (file)
--- a/src/Time/light.cxx
+++ b/src/Time/light.cxx
@@ -76,9 +76,9 @@ FGLight::FGLight ()
       _cloud_color(0, 0, 0, 0),
       _adj_fog_color(0, 0, 0, 0),
       _adj_sky_color(0, 0, 0, 0),
-      _humidity(69.5),
       _saturation(1.0),
       _scattering(0.8),
+      _overcast(0.0),
       _dt_total(0)
 {
 }
@@ -146,10 +146,12 @@ void FGLight::bind () {
     // Write Only
     prop->tie("/rendering/scene/saturation",SGRawValuePointer<float>(&_saturation));
     prop->tie("/rendering/scene/scattering",SGRawValuePointer<float>(&_scattering));
-    prop->tie("/environment/relative-humidity",SGRawValuePointer<float>(&_humidity));
+    prop->tie("/rendering/scene/overcast",SGRawValuePointer<float>(&_overcast));
 
+    _sunAngleRad = prop->getNode("/sim/time/sun-angle-rad", true);
+    _sunAngleRad->setDoubleValue(_sun_angle);
+    
     // Read Only
-    prop->tie("/sim/time/sun-angle-rad",SGRawValuePointer<double>(&_sun_angle));
     prop->tie("/rendering/scene/ambient/red",SGRawValuePointer<float>(&_scene_ambient[0]));
     prop->tie("/rendering/scene/ambient/green",SGRawValuePointer<float>(&_scene_ambient[1]));
     prop->tie("/rendering/scene/ambient/blue",SGRawValuePointer<float>(&_scene_ambient[2]));
@@ -180,9 +182,7 @@ void FGLight::unbind () {
     SGPropertyNode *prop = globals->get_props();
     prop->untie("/rendering/scene/saturation");
     prop->untie("/rendering/scene/scattering");
-    prop->untie("/environment/relative-humidity");
-
-    prop->untie("/sim/time/sun-angle-rad");
+    prop->untie("/rendering/scene/overcast");
     prop->untie("/rendering/scene/ambient/red");
     prop->untie("/rendering/scene/ambient/green");
     prop->untie("/rendering/scene/ambient/blue");
@@ -225,7 +225,8 @@ void FGLight::update_sky_color () {
 
     // calculate lighting parameters based on sun's relative angle to
     // local up
-    float av = _humidity * 45;
+    static SGConstPropertyNode_ptr humidity = fgGetNode("/environment/relative-humidity");
+    float av = humidity->getFloatValue() * 45;
     float visibility_log = log(av)/11.0;
     float visibility_inv = (45000.0 - av)/45000.0;
 
@@ -236,6 +237,8 @@ void FGLight::update_sky_color () {
     else if (_saturation > 1.0) _saturation = 1.0;
     if (_scattering < 0.0) _scattering = 0.0;
     else if (_scattering > 1.0) _scattering = 1.0;
+    if (_overcast < 0.0) _overcast = 0.0;
+    else if (_overcast > 1.0) _overcast = 1.0;
 
     float ambient = _ambient_tbl->interpolate( deg ) + visibility_inv/10;
     float diffuse = _diffuse_tbl->interpolate( deg );
@@ -262,9 +265,9 @@ void FGLight::update_sky_color () {
     gamma_correct_rgb( _fog_color.data() );
 
     // set sky color
-    _sky_color[0] = base_sky_color[0] * sky_brightness;
-    _sky_color[1] = base_sky_color[1] * sky_brightness;
-    _sky_color[2] = base_sky_color[2] * sky_brightness;
+    _sky_color[0] = (base_sky_color[0] + (1.0f-base_sky_color[0]) * _overcast) * sky_brightness;
+    _sky_color[1] = (base_sky_color[1] + (1.0f-base_sky_color[1]) * _overcast)  * sky_brightness;
+    _sky_color[2] = (base_sky_color[2] + (1.0f-base_sky_color[2]) * _overcast)  * sky_brightness;
     _sky_color[3] = base_sky_color[3];
     gamma_correct_rgb( _sky_color.data() );
 
@@ -288,6 +291,8 @@ void FGLight::update_sky_color () {
     _scene_ambient[3] = 1.0;
     gamma_correct_rgb( _scene_ambient.data() );
 
+    SGSky* thesky = globals->get_renderer()->getSky();
+    
     SGVec4f color = thesky->get_scene_color();
     _scene_diffuse[0] = color[0] * diffuse;
     _scene_diffuse[1] = color[1] * diffuse;
@@ -359,6 +364,7 @@ void FGLight::update_adj_fog_color () {
 
     // revert to unmodified values before using them.
     //
+    SGSky* thesky = globals->get_renderer()->getSky();
     SGVec4f color = thesky->get_scene_color();
 
     gamma_restore_rgb( _fog_color.data(), gamma );
@@ -450,4 +456,6 @@ void FGLight::updateSunPos()
 
     // cout << "  Sky needs to rotate = " << _sun_rotation << " rads = "
     //      << _sun_rotation * SGD_RADIANS_TO_DEGREES << " degrees." << endl;
+  
+    _sunAngleRad->setDoubleValue(_sun_angle);
 }