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Code Issues 123 Wiki Activity

minor refactoring, shadows colour influenced by sun/moon positions

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This commit is contained in:
tmj-fstate
2017-08-03 16:00:48 +02:00
parent c8a70e5280
commit 238ea7547d
9 changed files with 162 additions and 150 deletions
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9
World.cpp
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@@ -2220,10 +2220,12 @@ world_environment::update() {
m_sun.update();
m_moon.update();
// ...determine source of key light and adjust global state accordingly...
auto const sunlightlevel = m_sun.getIntensity();
// diffuse (sun) intensity goes down after twilight, and reaches minimum 18 degrees below horizon
float twilightfactor = clamp( -m_sun.getAngle(), 0.0f, 18.0f ) / 18.0f;
// NOTE: sun light receives extra padding to prevent moon from kicking in too soon
auto const sunlightlevel = m_sun.getIntensity() + 0.05f * ( 1.f - twilightfactor );
auto const moonlightlevel = m_moon.getIntensity() * 0.65f; // scaled down by arbitrary factor, it's pretty bright otherwise
float keylightintensity;
float twilightfactor;
glm::vec3 keylightcolor;
if( moonlightlevel > sunlightlevel ) {
// rare situations when the moon is brighter than the sun, typically at night
@@ -2241,8 +2243,7 @@ world_environment::update() {
Global::DayLight.set_position( m_sun.getPosition() );
Global::DayLight.direction = -1.0f * m_sun.getDirection();
keylightintensity = sunlightlevel;
// diffuse (sun) intensity goes down after twilight, and reaches minimum 18 degrees below horizon
twilightfactor = clamp( -Global::SunAngle, 0.0f, 18.0f ) / 18.0f;
// include 'golden hour' effect in twilight lighting
float const duskfactor = 1.0f - clamp( Global::SunAngle, 0.0f, 18.0f ) / 18.0f;
keylightcolor = interpolate(
glm::vec3( 255.0f / 255.0f, 242.0f / 255.0f, 231.0f / 255.0f ),