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Update the fog color based on the color of the sun. This is a first attempt and probably needs tweaking

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ehofman 2003-05-13 19:00:27 +00:00
parent 7289eaa8ba
commit db8cc2aba9
1 changed files with 9 additions and 1 deletions
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10
src/Time/light.cxx
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@ -52,6 +52,7 @@ SG_USING_STD(string);
#include <simgear/math/interpolater.hxx>
#include <simgear/math/polar3d.hxx>
#include <simgear/misc/sg_path.hxx>
#include <simgear/sky/sky.hxx>
#include <Aircraft/aircraft.hxx>
#include <Main/globals.hxx>
@ -60,6 +61,7 @@ SG_USING_STD(string);
#include "light.hxx"
#include "sunpos.hxx"
extern SGSky *thesky; // FIXME: from main.cxx
fgLIGHT cur_light_params;
@ -110,7 +112,6 @@ void fgLIGHT::Update( void ) {
#else // default
GLfloat base_sky_color[4] = { 0.336, 0.406, 0.574, 1.0 };
#endif
// base fog color
GLfloat base_fog_color[4] = { 0.80, 0.83, 1.0, 1.0 };
double deg, ambient, diffuse, specular, sky_brightness;
@ -121,6 +122,13 @@ void fgLIGHT::Update( void ) {
// calculate lighting parameters based on sun's relative angle to
// local up
// base fog color
float *sun_color = thesky->get_sun_color();
base_fog_color[0] *= (0.75 + sun_color[0]/4);
base_fog_color[1] *= (0.5 + sun_color[1]/2);
base_fog_color[2] *= sun_color[2];
deg = sun_angle * SGD_RADIANS_TO_DEGREES;
SG_LOG( SG_EVENT, SG_INFO, " Sun angle = " << deg );