X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=src%2FEnvironment%2Ffgclouds.cxx;h=606a4973e8a5e2ae964b619a46dfefcf07e6a514;hb=386aefe69358ce41a11c9afeb8f56e26758fe56b;hp=e6e32e43559792ac1545062eccc106cc6cb55fb0;hpb=3700a42783202c4ecbb5801fcc348d7799a1f1ab;p=flightgear.git diff --git a/src/Environment/fgclouds.cxx b/src/Environment/fgclouds.cxx index e6e32e435..606a4973e 100644 --- a/src/Environment/fgclouds.cxx +++ b/src/Environment/fgclouds.cxx @@ -39,22 +39,14 @@ #include #include
-#include "environment_ctrl.hxx" -#include "environment_mgr.hxx" -#include "fgmetar.hxx" #include "fgclouds.hxx" extern SGSky *thesky; -FGClouds::FGClouds(FGEnvironmentCtrl * controller) : +FGClouds::FGClouds() : snd_lightning(0), - _controller(controller), - station_elevation_ft(0.0), - clouds_3d_enabled(false), - last_scenario( "unset" ), - last_env_config( new SGPropertyNode ), - last_env_clouds( new SGPropertyNode ) + clouds_3d_enabled(false) { update_event = 0; } @@ -76,19 +68,22 @@ void FGClouds::init(void) { snd_lightning = new SGSoundSample(globals->get_fg_root().c_str(), "Sounds/thunder.wav"); snd_lightning->set_max_dist(7000.0f); snd_lightning->set_reference_dist(3000.0f); - SGSoundMgr *soundMgr = globals->get_soundmgr(); - soundMgr->add( snd_lightning, "thunder" ); - sgEnviro.set_soundMgr( soundMgr ); + SGSoundMgr *smgr = globals->get_soundmgr(); + SGSampleGroup *sgr = smgr->find("weather", true); + sgr->add( snd_lightning, "thunder" ); + sgEnviro.set_sampleGroup( sgr ); } } -void FGClouds::buildCloud(SGPropertyNode *cloud_def_root, SGPropertyNode *box_def_root, const string& name, sgVec3 pos, SGCloudField *layer) { +// Build an invidual cloud. Returns the extents of the cloud for coverage calculations +double FGClouds::buildCloud(SGPropertyNode *cloud_def_root, SGPropertyNode *box_def_root, const string& name, double grid_z_rand, SGCloudField *layer) { SGPropertyNode *box_def=NULL; - SGPropertyNode *cld_def=NULL; - - SGPath texture_root = globals->get_fg_root(); - texture_root.append("Textures"); - texture_root.append("Sky"); + SGPropertyNode *cld_def=NULL; + double extent = 0.0; + + SGPath texture_root = globals->get_fg_root(); + texture_root.append("Textures"); + texture_root.append("Sky"); box_def = box_def_root->getChild(name.c_str()); @@ -98,55 +93,97 @@ void FGClouds::buildCloud(SGPropertyNode *cloud_def_root, SGPropertyNode *box_d box_def = box_def_root->getChild(base_name.c_str()); } if( !box_def ) - return; + return 0.0; } + + double x = sg_random() * SGCloudField::fieldSize - (SGCloudField::fieldSize / 2.0); + double y = sg_random() * SGCloudField::fieldSize - (SGCloudField::fieldSize / 2.0); + double z = grid_z_rand * (sg_random() - 0.5); + + sgVec3 pos={x,y,z}; + for(int i = 0; i < box_def->nChildren() ; i++) { SGPropertyNode *abox = box_def->getChild(i); if( strcmp(abox->getName(), "box") == 0) { - double x = abox->getDoubleValue("x") + pos[0]; - double y = abox->getDoubleValue("y") + pos[1]; - double z = abox->getDoubleValue("z") + pos[2]; - SGVec3f newpos = SGVec3f(x, z, y); - - string type = abox->getStringValue("type", "cu-small"); - - cld_def = cloud_def_root->getChild(type.c_str()); - if ( !cld_def ) return; - - double min_width = cld_def->getDoubleValue("min-cloud-width-m", 500.0); - double max_width = cld_def->getDoubleValue("max-cloud-width-m", 1000.0); - double min_height = cld_def->getDoubleValue("min-cloud-height-m", min_width); - double max_height = cld_def->getDoubleValue("max-cloud-height-m", max_width); - double min_sprite_width = cld_def->getDoubleValue("min-sprite-width-m", 200.0); - double max_sprite_width = cld_def->getDoubleValue("max-sprite-width-m", min_sprite_width); - double min_sprite_height = cld_def->getDoubleValue("min-sprite-height-m", min_sprite_width); - double max_sprite_height = cld_def->getDoubleValue("max-sprite-height-m", max_sprite_width); - int num_sprites = cld_def->getIntValue("num-sprites", 20); - int num_textures_x = cld_def->getIntValue("num-textures-x", 1); - int num_textures_y = cld_def->getIntValue("num-textures-y", 1); - double bottom_shade = cld_def->getDoubleValue("bottom-shade", 1.0); - string texture = cld_def->getStringValue("texture", "cl_cumulus.rgb"); - - SGNewCloud *cld = - new SGNewCloud(type, - texture_root, - texture, - min_width, - max_width, - min_height, - max_height, - min_sprite_width, - max_sprite_width, - min_sprite_height, - max_sprite_height, - bottom_shade, - num_sprites, - num_textures_x, - num_textures_y); - layer->addCloud(newpos, cld); + + string type = abox->getStringValue("type", "cu-small"); + cld_def = cloud_def_root->getChild(type.c_str()); + if ( !cld_def ) return 0.0; + + double w = abox->getDoubleValue("width", 1000.0); + double h = abox->getDoubleValue("height", 1000.0); + int hdist = abox->getIntValue("hdist", 1); + int vdist = abox->getIntValue("vdist", 1); + + double c = abox->getDoubleValue("count", 5); + int count = (int) (c + (sg_random() - 0.5) * c); + + extent = max(w*w, extent); + + for (int j = 0; j < count; j++) { + + // Locate the clouds randomly in the defined space. The hdist and + // vdist values control the horizontal and vertical distribution + // by simply summing random components. + double x = 0.0; + double y = 0.0; + double z = 0.0; + + for (int k = 0; k < hdist; k++) + { + x += (sg_random() / hdist); + y += (sg_random() / hdist); + } + + for (int k = 0; k < vdist; k++) + { + z += (sg_random() / vdist); + } + + x = w * (x - 0.5) + pos[0]; // N/S + y = w * (y - 0.5) + pos[1]; // E/W + z = h * z + pos[2]; // Up/Down. pos[2] is the cloudbase + + SGVec3f newpos = SGVec3f(x, y, z); + + double min_width = cld_def->getDoubleValue("min-cloud-width-m", 500.0); + double max_width = cld_def->getDoubleValue("max-cloud-width-m", 1000.0); + double min_height = cld_def->getDoubleValue("min-cloud-height-m", min_width); + double max_height = cld_def->getDoubleValue("max-cloud-height-m", max_width); + double min_sprite_width = cld_def->getDoubleValue("min-sprite-width-m", 200.0); + double max_sprite_width = cld_def->getDoubleValue("max-sprite-width-m", min_sprite_width); + double min_sprite_height = cld_def->getDoubleValue("min-sprite-height-m", min_sprite_width); + double max_sprite_height = cld_def->getDoubleValue("max-sprite-height-m", max_sprite_width); + int num_sprites = cld_def->getIntValue("num-sprites", 20); + int num_textures_x = cld_def->getIntValue("num-textures-x", 1); + int num_textures_y = cld_def->getIntValue("num-textures-y", 1); + double bottom_shade = cld_def->getDoubleValue("bottom-shade", 1.0); + string texture = cld_def->getStringValue("texture", "cu.png"); + + SGNewCloud *cld = + new SGNewCloud(type, + texture_root, + texture, + min_width, + max_width, + min_height, + max_height, + min_sprite_width, + max_sprite_width, + min_sprite_height, + max_sprite_height, + bottom_shade, + num_sprites, + num_textures_x, + num_textures_y); + layer->addCloud(newpos, cld); + } } } + + // Return the maximum extent of the cloud + return extent; } void FGClouds::buildLayer(int iLayer, const string& name, double alt, double coverage) { @@ -164,14 +201,13 @@ void FGClouds::buildLayer(int iLayer, const string& name, double alt, double cov layer->clear(); // If we don't have the required properties, then render the cloud in 2D - if ((! clouds_3d_enabled) || coverage == 0.0 || - layer_def_root == NULL || cloud_def_root == NULL || box_def_root == NULL) - { - thesky->get_cloud_layer(iLayer)->set_enable3dClouds(false); - return; - } + if ((! clouds_3d_enabled) || coverage == 0.0 || + layer_def_root == NULL || cloud_def_root == NULL || box_def_root == NULL) { + thesky->get_cloud_layer(iLayer)->set_enable3dClouds(false); + return; + } - // If we can't find a definition for this cloud type, then render the cloud in 2D + // If we can't find a definition for this cloud type, then render the cloud in 2D SGPropertyNode *layer_def=NULL; layer_def = layer_def_root->getChild(name.c_str()); if( !layer_def ) { @@ -179,20 +215,15 @@ void FGClouds::buildLayer(int iLayer, const string& name, double alt, double cov string base_name = name.substr(0,2); layer_def = layer_def_root->getChild(base_name.c_str()); } - if( !layer_def ) - { - thesky->get_cloud_layer(iLayer)->set_enable3dClouds(false); - return; - } + if( !layer_def ) { + thesky->get_cloud_layer(iLayer)->set_enable3dClouds(false); + return; + } } - - // At this point, we know we've got some 3D clouds to generate. - thesky->get_cloud_layer(iLayer)->set_enable3dClouds(true); - double grid_x_size = layer_def->getDoubleValue("grid-x-size", 1000.0); - double grid_y_size = layer_def->getDoubleValue("grid-y-size", 1000.0); - double grid_x_rand = layer_def->getDoubleValue("grid-x-rand", grid_x_size); - double grid_y_rand = layer_def->getDoubleValue("grid-y-rand", grid_y_size); + // At this point, we know we've got some 3D clouds to generate. + thesky->get_cloud_layer(iLayer)->set_enable3dClouds(true); + double grid_z_rand = layer_def->getDoubleValue("grid-z-rand"); for(int i = 0; i < layer_def->nChildren() ; i++) { @@ -207,7 +238,7 @@ void FGClouds::buildLayer(int iLayer, const string& name, double alt, double cov char variety_name[50]; do { variety++; - snprintf(variety_name, sizeof(variety_name), cloud_name.c_str(), variety); + snprintf(variety_name, sizeof(variety_name) - 1, cloud_name.c_str(), variety); } while( box_def_root->getChild(variety_name, 0, false) ); totalCount += count; @@ -216,38 +247,31 @@ void FGClouds::buildLayer(int iLayer, const string& name, double alt, double cov } } totalCount = 1.0 / totalCount; - - for(double px = 0.0; px < SGCloudField::fieldSize; px += grid_x_size) { - for(double py = 0.0; py < SGCloudField::fieldSize; py += grid_y_size) { - double x = px + grid_x_rand * (sg_random() - 0.5) - (SGCloudField::fieldSize / 2.0); - double y = py + grid_y_rand * (sg_random() - 0.5) - (SGCloudField::fieldSize / 2.0); - double z = grid_z_rand * (sg_random() - 0.5); - - if (sg_random() < coverage) - { - double choice = sg_random(); + + // Determine how much cloud coverage we need in m^2. + double cov = coverage * SGCloudField::fieldSize * SGCloudField::fieldSize; + + while (cov > 0.0f) { + double choice = sg_random(); - for(int i = 0; i < CloudVarietyCount ; i ++) { - choice -= tCloudVariety[i].count * totalCount; - if( choice <= 0.0 ) { - sgVec3 pos={x,z,y}; - - buildCloud(cloud_def_root, - box_def_root, - tCloudVariety[i].name, - pos, - layer); - break; - } - } - } + for(int i = 0; i < CloudVarietyCount ; i ++) { + choice -= tCloudVariety[i].count * totalCount; + if( choice <= 0.0 ) { + cov -= buildCloud(cloud_def_root, + box_def_root, + tCloudVariety[i].name, + grid_z_rand, + layer); + break; + } } - } + + } - // Now we've built any clouds, enable them and set the density (coverage) - //layer->setCoverage(coverage); - //layer->applyCoverage(); - thesky->get_cloud_layer(iLayer)->set_enable3dClouds(clouds_3d_enabled); + // Now we've built any clouds, enable them and set the density (coverage) + //layer->setCoverage(coverage); + //layer->applyCoverage(); + thesky->get_cloud_layer(iLayer)->set_enable3dClouds(clouds_3d_enabled); } void FGClouds::buildCloudLayers(void) { @@ -273,7 +297,6 @@ void FGClouds::buildCloudLayers(void) { double alt_m = alt_ft * SG_FEET_TO_METER; string coverage = cloud_root->getStringValue("coverage"); - double coverage_norm = 0.0; if( coverage == "few" ) coverage_norm = 2.0/8.0; // <1-2 @@ -297,15 +320,15 @@ void FGClouds::buildCloudLayers(void) { layer_type = "ns"; } else { // layer_type = "st|cu|cb|sc"; - if( cumulus_base * 0.80 < alt_m && cumulus_base * 1.20 > alt_m ) { - // +/- 20% from cumulus probable base - layer_type = "cu"; - } else if( stratus_base * 0.80 < alt_m && stratus_base * 1.40 > alt_m ) { - // +/- 20% from stratus probable base - layer_type = "st"; - } else { + if( cumulus_base * 0.80 < alt_m && cumulus_base * 1.20 > alt_m ) { + // +/- 20% from cumulus probable base + layer_type = "cu"; + } else if( stratus_base * 0.80 < alt_m && stratus_base * 1.40 > alt_m ) { + // +/- 20% from stratus probable base + layer_type = "st"; + } else { // above formulae is far from perfect - if ( alt_ft < 2000 ) + if ( alt_ft < 2000 ) layer_type = "st"; else if( alt_ft < 4500 ) layer_type = "cu"; @@ -318,232 +341,15 @@ void FGClouds::buildCloudLayers(void) { } } -// copy from FGMetarEnvironmentCtrl until better -void -FGClouds::update_metar_properties( const FGMetar *m ) -{ - int i; - - fgSetString("/environment/metar/station-id", m->getId()); - fgSetDouble("/environment/metar/min-visibility-m", - m->getMinVisibility().getVisibility_m() ); - fgSetDouble("/environment/metar/max-visibility-m", - m->getMaxVisibility().getVisibility_m() ); - - SGPropertyNode *metar = fgGetNode("/environment/metar", true); - const SGMetarVisibility *dirvis = m->getDirVisibility(); - - for (i = 0; i < 8; i++, dirvis++) { - SGPropertyNode *vis = metar->getChild("visibility", i, true); - double v = dirvis->getVisibility_m(); - - vis->setDoubleValue("min-m", v); - vis->setDoubleValue("max-m", v); - } - - fgSetInt("/environment/metar/base-wind-range-from", - m->getWindRangeFrom() ); - fgSetInt("/environment/metar/base-wind-range-to", - m->getWindRangeTo() ); - fgSetDouble("/environment/metar/base-wind-speed-kt", - m->getWindSpeed_kt() ); - fgSetDouble("/environment/metar/gust-wind-speed-kt", - m->getGustSpeed_kt() ); - fgSetDouble("/environment/metar/temperature-degc", - m->getTemperature_C() ); - fgSetDouble("/environment/metar/dewpoint-degc", - m->getDewpoint_C() ); - fgSetDouble("/environment/metar/rel-humidity-norm", - m->getRelHumidity() ); - fgSetDouble("/environment/metar/pressure-inhg", - m->getPressure_inHg() ); - - vector cv = m->getClouds(); - vector::const_iterator cloud, cloud_end = cv.end(); - - // Load into both the METAR and environment properties to stop interpolation - SGPropertyNode *metar_clouds = fgGetNode("/environment/metar/clouds", true); - SGPropertyNode *clouds = fgGetNode("/environment/clouds", true); - - for (i = 0, cloud = cv.begin(); i < FGEnvironmentMgr::MAX_CLOUD_LAYERS; i++) { - const char *coverage_string[5] = { "clear", "few", "scattered", "broken", "overcast" }; - const double thickness_value[5] = { 0, 65, 600, 750, 1000 }; - - const char *coverage = "clear"; - double elevation = -9999.0; - double thickness = 0.0; - const double span = 40000.0; - - if (cloud != cloud_end) { - int c = cloud->getCoverage(); - coverage = coverage_string[c]; - elevation = cloud->getAltitude_ft() + station_elevation_ft; - thickness = thickness_value[c]; - ++cloud; - } - - SGPropertyNode *layer; - layer = metar_clouds->getChild("layer", i, true); - layer->setStringValue("coverage", coverage); - layer->setDoubleValue("elevation-ft", elevation); - layer->setDoubleValue("thickness-ft", thickness); - layer->setDoubleValue("span-m", span); - - layer = clouds->getChild("layer", i, true); - layer->setStringValue("coverage", coverage); - layer->setDoubleValue("elevation-ft", elevation); - layer->setDoubleValue("thickness-ft", thickness); - layer->setDoubleValue("span-m", span); - } - - fgSetDouble("/environment/metar/rain-norm", m->getRain()); - fgSetDouble("/environment/metar/hail-norm", m->getHail()); - fgSetDouble("/environment/metar/snow-norm", m->getSnow()); - fgSetBool("/environment/metar/snow-cover", m->getSnowCover()); -} - -void -FGClouds::update_env_config () -{ - fgSetupWind( fgGetDouble("/environment/metar/base-wind-range-from"), - fgGetDouble("/environment/metar/base-wind-range-to"), - fgGetDouble("/environment/metar/base-wind-speed-kt"), - fgGetDouble("/environment/metar/gust-wind-speed-kt") ); - - fgDefaultWeatherValue( "visibility-m", - fgGetDouble("/environment/metar/min-visibility-m") ); -#if 0 - set_temp_at_altitude( fgGetDouble("/environment/metar/temperature-degc"), - station_elevation_ft ); - set_dewpoint_at_altitude( fgGetDouble("/environment/metar/dewpoint-degc"), - station_elevation_ft ); -#endif - fgDefaultWeatherValue( "pressure-sea-level-inhg", - fgGetDouble("/environment/metar/pressure-inhg") ); -} - -void FGClouds::setLayer( int iLayer, float alt_ft, const string& coverage, const string& layer_type ) { - double coverage_norm = 0.0; - if( coverage == "few" ) - coverage_norm = 2.0/8.0; // <1-2 - else if( coverage == "scattered" ) - coverage_norm = 4.0/8.0; // 3-4 - else if( coverage == "broken" ) - coverage_norm = 6.0/8.0; // 5-7 - else if( coverage == "overcast" ) - coverage_norm = 8.0/8.0; // 8 - - buildLayer(iLayer, layer_type, station_elevation_ft + alt_ft * SG_FEET_TO_METER, coverage_norm); -} - -void FGClouds::buildScenario( const string& scenario ) { - string fakeMetar=""; - string station = fgGetString("/environment/metar/station-id", "XXXX"); - - // fetch station elevation if exists - if( station == "XXXX" ) - station_elevation_ft = fgGetDouble("/position/ground-elev-m", 0.0); - else { - const FGAirport* a = FGAirport::findByIdent(station); - station_elevation_ft = (a ? a->getElevation() : 0.0); - } - - for(int iLayer = 0 ; iLayer < thesky->get_cloud_layer_count(); iLayer++) { - thesky->get_cloud_layer(iLayer) - ->setCoverage(SGCloudLayer::SG_CLOUD_CLEAR); - thesky->get_cloud_layer(iLayer)->get_layer3D()->clear(); - } - - station += " 011000Z "; - if( scenario == "Fair weather" ) { - fakeMetar = "15003KT 12SM SCT041 FEW200 20/08 Q1015 NOSIG"; - //setLayer(0, 3300.0, "scattered", "cu"); - } else if( scenario == "Thunderstorm" ) { - fakeMetar = "15012KT 08SM TSRA SCT040 BKN070 20/12 Q0995"; - setLayer(0, 4000.0, "scattered", "cb"); - setLayer(1, 7000.0, "scattered", "ns"); - } else - return; - FGMetar *m = new FGMetar( station + fakeMetar ); - update_metar_properties( m ); - update_env_config(); - // propagate aloft tables - //_controller->reinit(); - - fgSetString("/environment/metar/last-metar", m->getData()); - // TODO:de-activate real metar updates - if( scenario == "Fair weather" ) { - fgSetString("/environment/clouds/layer[1]/coverage", "cirrus"); - } -} - -void FGClouds::set_scenario(const char * sc) { - - scenario = string(sc); - -// if(!rebuild_required && (scenario == last_scenario)) -// return; - - if( last_scenario == "none" ) { - // save clouds and weather conditions - SGPropertyNode *param = fgGetNode("/environment/config", true); - copyProperties( param, last_env_config ); - param = fgGetNode("/environment/clouds", true); - copyProperties( param, last_env_clouds ); - } - - if( scenario == "METAR" ) { - string realMetar = fgGetString("/environment/metar/real-metar", ""); - - if( realMetar != "" ) { - fgSetString("/environment/metar/last-metar", realMetar.c_str()); - FGMetar *m = new FGMetar( realMetar ); - update_metar_properties( m ); - update_env_config(); - // propagate aloft tables - _controller->reinit(); - buildCloudLayers(); - } - } - else if( scenario == "none" ) { - // restore clouds and weather conditions - SGPropertyNode *param = fgGetNode("/environment/config", true); - copyProperties( last_env_config, param ); - param = fgGetNode("/environment/clouds", true); - copyProperties( last_env_clouds, param ); - fgSetDouble("/environment/metar/rain-norm", 0.0); - fgSetDouble("/environment/metar/snow-norm", 0.0); -// update_env_config(); - // propagate aloft tables - _controller->reinit(); - buildCloudLayers(); - } - else { - buildScenario( scenario ); - _controller->reinit(); - buildCloudLayers(); - } - - last_scenario = scenario; - - if( snd_lightning == NULL ) - init(); -} - -const char * FGClouds::get_scenario(void) const -{ - return scenario.c_str(); -} - void FGClouds::set_3dClouds(bool enable) { - if (enable != clouds_3d_enabled) { - clouds_3d_enabled = enable; - buildCloudLayers(); - } + if (enable != clouds_3d_enabled) { + clouds_3d_enabled = enable; + buildCloudLayers(); + } } bool FGClouds::get_3dClouds() const { - return clouds_3d_enabled; + return clouds_3d_enabled; }