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logarithmic decrease in shinines/specular and limited linear increased ambient color due to reduced visibility.

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ehofman 2009-04-03 07:56:59 +00:00 committed by Tim Moore
parent 0ec4bf22bf
commit 846d756e55
1 changed files with 8 additions and 8 deletions
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16
src/Time/light.cxx
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@ -193,15 +193,15 @@ void FGLight::update_sky_color () {
// local up
float av = thesky->get_visibility();
if (av > 45000.0) av = 45000.0;
float visibility_norm = av/45000.0;
float visibility_inv = 1.0 - visibility_norm;
float visibility_log = log(av)/11.0;
float visibility_inv = (45000.0 - av)/45000.0;
float deg = _sun_angle * SGD_RADIANS_TO_DEGREES;
SG_LOG( SG_EVENT, SG_DEBUG, " Sun angle = " << deg );
float ambient = _ambient_tbl->interpolate( deg ) + visibility_inv/2;
float ambient = _ambient_tbl->interpolate( deg ) + visibility_inv/10;
float diffuse = _diffuse_tbl->interpolate( deg );
float specular = _specular_tbl->interpolate( deg ) * visibility_norm;
float specular = _specular_tbl->interpolate( deg ) * visibility_log;
float sky_brightness = _sky_tbl->interpolate( deg );
SG_LOG( SG_EVENT, SG_DEBUG,
@ -233,12 +233,12 @@ void FGLight::update_sky_color () {
}
gamma_correct_rgb( _cloud_color.data() );
SGVec4f sun_color = thesky->get_sun_color();
_scene_ambient[0] = _fog_color[0] * ambient;
_scene_ambient[1] = _fog_color[1] * ambient;
_scene_ambient[2] = _fog_color[2] * ambient;
_scene_ambient[0] = _fog_color[0] * _cloud_color[0] * ambient;
_scene_ambient[1] = _fog_color[1] * _cloud_color[1] * ambient;
_scene_ambient[2] = _fog_color[2] * _cloud_color[2] * ambient;
_scene_ambient[3] = 1.0;
SGVec4f sun_color = thesky->get_sun_color();
_scene_diffuse[0] = (sun_color[0]*0.4 + _fog_color[0]*0.6) * diffuse;
_scene_diffuse[1] = (sun_color[1]*0.4 + _fog_color[1]*0.6) * diffuse;
_scene_diffuse[2] = (sun_color[2]*0.4 + _fog_color[2]*0.6) * diffuse;