#include "cloudfield.hxx"
#include "newcloud.hxx"
-#include <simgear/math/sg_random.h>
#include <simgear/scene/util/RenderConstants.hxx>
#include <simgear/scene/util/OsgMath.hxx>
#include <simgear/sg_inlines.h>
// Constructor
SGSky::SGSky( void ) {
effective_visibility = visibility = 10000.0;
+ minimum_sky_visibility = 1000;
// near cloud visibility state variables
in_puff = false;
pre_root->setStateSet(preStateSet);
cloud_root = new osg::Group;
cloud_root->setNodeMask(simgear::MODEL_BIT);
-
+ cloud_root->setName("SGSky-cloud-root");
pre_selector = new osg::Switch;
pre_transform = new osg::Group;
_ephTransform = new osg::MatrixTransform;
+
+ // Set up a RNG that is repeatable within 10 minutes to ensure that clouds
+ // are synced up in multi-process deployments.
+ mt_init_time_10(&seed);
}
// the provided branch
void SGSky::build( double h_radius_m, double v_radius_m,
double sun_size, double moon_size,
- const SGEphemeris& eph, SGPropertyNode *property_tree_node )
+ const SGEphemeris& eph, SGPropertyNode *property_tree_node,
+ simgear::SGReaderWriterOptions* options )
{
dome = new SGSkyDome;
- pre_transform->addChild( dome->build( h_radius_m, v_radius_m ) );
+ pre_transform->addChild( dome->build( h_radius_m, v_radius_m, options ) );
pre_transform->addChild(_ephTransform.get());
planets = new SGStars;
// 180 degrees = darkest midnight
bool SGSky::repaint( const SGSkyColor &sc, const SGEphemeris& eph )
{
- if ( effective_visibility > 1000.0 ) {
+ if ( effective_visibility > minimum_sky_visibility ) {
enable();
dome->repaint( sc.adj_sky_color, sc.sky_color, sc.fog_color,
sc.sun_angle, effective_visibility );
SGCloudField::setUseImpostors(imp);
}
+float SGSky::get_minimum_sky_visibility() const
+{
+ return minimum_sky_visibility;
+}
+
+void SGSky::set_minimum_sky_visibility( float value )
+{
+ minimum_sky_visibility = value;
+}
void SGSky::texture_path( const string& path ) {
tex_path = SGPath( path );
if ( ratio < 1.0 ) {
if ( ! in_puff ) {
// calc chance of entering cloud puff
- double rnd = sg_random();
+ double rnd = mt_rand(&seed);
double chance = rnd * rnd * rnd;
if ( chance > 0.95 /* * (diff - 25) / 50.0 */ ) {
in_puff = true;
- puff_length = sg_random() * 2.0; // up to 2 seconds
+ puff_length = mt_rand(&seed) * 2.0; // up to 2 seconds
puff_progression = 0.0;
}
}