//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
-// Foundation, 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
//
+#ifdef HAVE_CONFIG_H
+# include <simgear_config.h>
+#endif
+#include <simgear/constants.h>
+#include <simgear/structure/SGReferenced.hxx>
+#include <simgear/structure/SGSharedPtr.hxx>
+#include <simgear/math/sg_random.h>
+#include <simgear/math/sg_geodesy.hxx>
+#include <simgear/sound/sample_group.hxx>
#include <simgear/scene/sky/cloudfield.hxx>
#include <simgear/scene/sky/newcloud.hxx>
+#include <simgear/props/props.hxx>
#include "visual_enviro.hxx"
+#include <vector>
+
+using std::vector;
+
+
+typedef struct {
+ SGVec3d pt;
+ int depth;
+ int prev;
+} lt_tree_seg;
+
+#define MAX_RAIN_SLICE 200
+static float rainpos[MAX_RAIN_SLICE];
+#define MAX_LT_TREE_SEG 400
+
+#define DFL_MIN_LIGHT 0.35
+SGVec3f SGEnviro::min_light(DFL_MIN_LIGHT, DFL_MIN_LIGHT, DFL_MIN_LIGHT);
+#define DFL_STREAK_BRIGHT_NEARMOST_LAYER 0.9
+float SGEnviro::streak_bright_nearmost_layer = DFL_STREAK_BRIGHT_NEARMOST_LAYER;
+#define DFL_STREAK_BRIGHT_FARMOST_LAYER 0.5
+float SGEnviro::streak_bright_farmost_layer = DFL_STREAK_BRIGHT_FARMOST_LAYER;
+#define DFL_STREAK_PERIOD_MAX 2.5
+float SGEnviro::streak_period_max = DFL_STREAK_PERIOD_MAX;
+#define DFL_STREAK_PERIOD_CHANGE_PER_KT 0.005
+float SGEnviro::streak_period_change_per_kt = DFL_STREAK_PERIOD_CHANGE_PER_KT;
+#define DFL_STREAK_PERIOD_MIN 1.0
+float SGEnviro::streak_period_min = DFL_STREAK_PERIOD_MIN;
+#define DFL_STREAK_LENGTH_MIN 0.03
+float SGEnviro::streak_length_min = DFL_STREAK_LENGTH_MIN;
+#define DFL_STREAK_LENGTH_CHANGE_PER_KT 0.0005
+float SGEnviro::streak_length_change_per_kt = DFL_STREAK_LENGTH_CHANGE_PER_KT;
+#define DFL_STREAK_LENGTH_MAX 0.1
+float SGEnviro::streak_length_max = DFL_STREAK_LENGTH_MAX;
+#define DFL_STREAK_COUNT_MIN 40
+int SGEnviro::streak_count_min = DFL_STREAK_COUNT_MIN;
+#define DFL_STREAK_COUNT_MAX 190
+#if (DFL_STREAK_COUNT_MAX > MAX_RAIN_SLICE)
+#error "Bad default!"
+#endif
+int SGEnviro::streak_count_max = DFL_STREAK_COUNT_MAX;
+#define DFL_CONE_BASE_RADIUS 15.0
+float SGEnviro::cone_base_radius = DFL_CONE_BASE_RADIUS;
+#define DFL_CONE_HEIGHT 30.0
+float SGEnviro::cone_height = DFL_CONE_HEIGHT;
+
+
+void SGEnviro::config(const SGPropertyNode* n)
+{
+ if (!n)
+ return;
+
+ const float ml = n->getFloatValue("min-light", DFL_MIN_LIGHT);
+ min_light = SGVec3f(ml, ml, ml);
+
+ streak_bright_nearmost_layer = n->getFloatValue(
+ "streak-brightness-nearmost-layer",
+ DFL_STREAK_BRIGHT_NEARMOST_LAYER);
+ streak_bright_farmost_layer = n->getFloatValue(
+ "streak-brightness-farmost-layer",
+ DFL_STREAK_BRIGHT_FARMOST_LAYER);
+
+ streak_period_max = n->getFloatValue(
+ "streak-period-max",
+ DFL_STREAK_PERIOD_MAX);
+ streak_period_min = n->getFloatValue(
+ "streak-period-min",
+ DFL_STREAK_PERIOD_MIN);
+ streak_period_change_per_kt = n->getFloatValue(
+ "streak-period-change-per-kt",
+ DFL_STREAK_PERIOD_CHANGE_PER_KT);
+
+ streak_length_max = n->getFloatValue(
+ "streak-length-max",
+ DFL_STREAK_LENGTH_MAX);
+ streak_length_min = n->getFloatValue(
+ "streak-length-min",
+ DFL_STREAK_LENGTH_MIN);
+ streak_length_change_per_kt = n->getFloatValue(
+ "streak-length-change-per-kt",
+ DFL_STREAK_LENGTH_CHANGE_PER_KT);
+
+ streak_count_min = n->getIntValue(
+ "streak-count-min", DFL_STREAK_COUNT_MIN);
+ streak_count_max = n->getIntValue(
+ "streak-count-max", DFL_STREAK_COUNT_MAX);
+ if (streak_count_max > MAX_RAIN_SLICE)
+ streak_count_max = MAX_RAIN_SLICE;
+
+ cone_base_radius = n->getFloatValue(
+ "cone-base-radius", DFL_CONE_BASE_RADIUS);
+ cone_height = n->getFloatValue("cone_height", DFL_CONE_HEIGHT);
+}
+
+
+/**
+ * A class to render lightnings.
+ */
+class SGLightning {
+public:
+ /**
+ * Build a new lightning.
+ * The lightning has a limited life time. It will also play a thunder sounder once.
+ * @param lon lon longitude in degree
+ * @param lat lat latitude in degree
+ * @param alt asl of top of lightning
+ */
+ SGLightning(double lon, double lat, double alt);
+ ~SGLightning();
+ void lt_Render(void);
+ void lt_build(void);
+ void lt_build_tree_branch(int tree_nr, SGVec3d &start, float energy, int nbseg, float segsize);
+
+ // contains all the segments of the lightning
+ lt_tree_seg lt_tree[MAX_LT_TREE_SEG];
+ // segment count
+ int nb_tree;
+ // position of lightning
+ double lon, lat, alt;
+ int sequence_count;
+ // time to live
+ double age;
+};
+
+typedef vector<SGLightning *> list_of_lightning;
+static list_of_lightning lightnings;
+
SGEnviro sgEnviro;
-SGEnviro::SGEnviro(void) {
+SGEnviro::SGEnviro() :
+ view_in_cloud(false),
+ precipitation_enable_state(true),
+ precipitation_density(100.0),
+ precipitation_max_alt(0.0),
+ turbulence_enable_state(false),
+ last_cloud_turbulence(0.0),
+ cloud_turbulence(0.0),
+ lightning_enable_state(false),
+ elapsed_time(0.0),
+ dt(0.0),
+ sampleGroup(NULL),
+ snd_active(false),
+ snd_dist(0.0),
+ min_time_before_lt(0.0),
+ fov_width(55.0),
+ fov_height(55.0)
+
+{
+ for(int i = 0; i < MAX_RAIN_SLICE ; i++)
+ rainpos[i] = sg_random();
+ radarEcho.reserve(100);
}
SGEnviro::~SGEnviro(void) {
-}
+ // if (sampleGroup) delete sampleGroup;
-int SGEnviro::get_clouds_CacheSize(void) const {
- return SGCloudField::get_CacheSize();
-}
-float SGEnviro::get_clouds_visibility(void) const {
- return SGCloudField::get_CloudVis();
+ // OSGFIXME
+ return;
+ list_of_lightning::iterator iLightning;
+ for( iLightning = lightnings.begin() ; iLightning != lightnings.end() ; ++iLightning ) {
+ delete (*iLightning);
+ }
+ lightnings.clear();
}
-float SGEnviro::get_clouds_density(void) const {
- return SGCloudField::get_density();
+
+void SGEnviro::startOfFrame( SGVec3f p, SGVec3f up, double lon, double lat, double alt, double delta_time) {
+ // OSGFIXME
+ return;
+ view_in_cloud = false;
+ // ask the impostor cache to do some cleanup
+ last_cloud_turbulence = cloud_turbulence;
+ cloud_turbulence = 0.0;
+ elapsed_time += delta_time;
+ min_time_before_lt -= delta_time;
+ dt = delta_time;
+#if 0
+ sgMat4 T1, LON, LAT;
+ sgVec3 axis;
+
+ sgMakeTransMat4( T1, p );
+
+ sgSetVec3( axis, 0.0, 0.0, 1.0 );
+ sgMakeRotMat4( LON, lon, axis );
+
+ sgSetVec3( axis, 0.0, 1.0, 0.0 );
+ sgMakeRotMat4( LAT, 90.0 - lat, axis );
+
+ sgMat4 TRANSFORM;
+
+ sgCopyMat4( TRANSFORM, T1 );
+ sgPreMultMat4( TRANSFORM, LON );
+ sgPreMultMat4( TRANSFORM, LAT );
+
+ sgCoord pos;
+ sgSetCoord( &pos, TRANSFORM );
+
+ sgMakeCoordMat4( transform, &pos );
+ #endif
+ last_lon = lon;
+ last_lat = lat;
+ last_alt = alt;
+
+ radarEcho.clear();
+ precipitation_max_alt = 400.0;
}
-bool SGEnviro::get_clouds_enable_state(void) const {
- return SGCloudField::get_enable3dClouds();
+
+void SGEnviro::endOfFrame(void) {
}
-void SGEnviro::set_clouds_CacheSize(int sizeKb) {
- SGCloudField::set_CacheSize(sizeKb);
+double SGEnviro::get_cloud_turbulence(void) const {
+ return last_cloud_turbulence;
}
-void SGEnviro::set_clouds_visibility(float distance) {
- SGCloudField::set_CloudVis(distance);
+
+// this can be queried to add some turbulence for example
+bool SGEnviro::is_view_in_cloud(void) const {
+ return view_in_cloud;
}
-void SGEnviro::set_clouds_density(float density) {
- SGCloudField::set_density(density);
+void SGEnviro::set_view_in_cloud(bool incloud) {
+ view_in_cloud = incloud;
}
-void SGEnviro::set_clouds_enable_state(bool enable) {
- SGCloudField::set_enable3dClouds(enable);
+
+bool SGEnviro::get_turbulence_enable_state(void) const {
+ return turbulence_enable_state;
}
+void SGEnviro::set_turbulence_enable_state(bool enable) {
+ turbulence_enable_state = enable;
+}
// rain/snow
float SGEnviro::get_precipitation_density(void) const {
- return 0.0;
+ return precipitation_density;
}
bool SGEnviro::get_precipitation_enable_state(void) const {
- return false;
+ return precipitation_enable_state;
}
void SGEnviro::set_precipitation_density(float density) {
+ precipitation_density = density;
}
void SGEnviro::set_precipitation_enable_state(bool enable) {
+ precipitation_enable_state = enable;
}
// others
bool SGEnviro::get_lightning_enable_state(void) const {
- return false;
+ return lightning_enable_state;
}
void SGEnviro::set_lightning_enable_state(bool enable) {
+ lightning_enable_state = enable;
+ if( ! enable ) {
+ // TODO:cleanup
+ }
+}
+
+void SGEnviro::setLight(SGVec4f adj_fog_color) {
+ // OSGFIXME
+ return;
+ fog_color = adj_fog_color;
+ if( false ) {
+ // ssgGetLight( 0 ) -> setColour( GL_DIFFUSE, l->scene_diffuse() );
+ }
}
+#if 0
+void SGEnviro::callback_cloud(float heading, float alt, float radius, int family, float dist, int cloudId) {
+ // send data to wx radar
+ // compute turbulence
+ // draw precipitation
+ // draw lightning
+ // compute illumination
+
+ // http://www.pilotfriend.com/flight_training/weather/THUNDERSTORM%20HAZARDS1.htm
+ double turbulence = 0.0;
+ if( dist < radius * radius * 2.25f ) {
+ switch(family) {
+ case SGNewCloud::CLFamilly_st:
+ turbulence = 0.2;
+ break;
+ case SGNewCloud::CLFamilly_ci:
+ case SGNewCloud::CLFamilly_cs:
+ case SGNewCloud::CLFamilly_cc:
+ case SGNewCloud::CLFamilly_ac:
+ case SGNewCloud::CLFamilly_as:
+ turbulence = 0.1;
+ break;
+ case SGNewCloud::CLFamilly_sc:
+ turbulence = 0.3;
+ break;
+ case SGNewCloud::CLFamilly_ns:
+ turbulence = 0.4;
+ break;
+ case SGNewCloud::CLFamilly_cu:
+ turbulence = 0.5;
+ break;
+ case SGNewCloud::CLFamilly_cb:
+ turbulence = 0.6;
+ break;
+ }
+ // full turbulence inside cloud, half in the vicinity
+ if( dist > radius * radius )
+ turbulence *= 0.5;
+ if( turbulence > cloud_turbulence )
+ cloud_turbulence = turbulence;
+ // we can do 'local' precipitations too
+ }
+ // convert to LWC for radar (experimental)
+ // http://www-das.uwyo.edu/~geerts/cwx/notes/chap08/moist_cloud.html
+ double LWC = 0.0;
+ switch(family) {
+ case SGNewCloud::CLFamilly_st:
+ LWC = 0.29;
+ break;
+ case SGNewCloud::CLFamilly_cu:
+ LWC = 0.27;
+ break;
+ case SGNewCloud::CLFamilly_cb:
+ LWC = 2.0;
+ break;
+ case SGNewCloud::CLFamilly_sc:
+ LWC = 0.44;
+ break;
+ case SGNewCloud::CLFamilly_ci:
+ LWC = 0.03;
+ break;
+ // no data
+ case SGNewCloud::CLFamilly_cs:
+ case SGNewCloud::CLFamilly_cc:
+ case SGNewCloud::CLFamilly_ac:
+ case SGNewCloud::CLFamilly_as:
+ LWC = 0.03;
+ break;
+ case SGNewCloud::CLFamilly_ns:
+ LWC = 0.29*2.0;
+ break;
+ }
+
+ // add to the list for the wxRadar instrument
+ if( LWC > 0.0 )
+ radarEcho.push_back( SGWxRadarEcho ( heading, alt, radius, dist, LWC, false, cloudId ) );
+
+ // NB:data valid only from cockpit view
+
+ // spawn a new lightning
+ if(lightning_enable_state && min_time_before_lt <= 0.0 && (family == SGNewCloud::CLFamilly_cb) &&
+ dist < 15000.0 * 15000.0 && sg_random() > 0.9f) {
+ double lat, lon;
+ SGVec3d orig, dest;
+ orig.setlat(last_lat * SG_DEGREES_TO_RADIANS );
+ orig.setlon(last_lon * SG_DEGREES_TO_RADIANS );
+ orig.setelev(0.0);
+ dist = sgSqrt(dist);
+ dest = calc_gc_lon_lat(orig, heading, dist);
+ lon = dest.lon() * SG_RADIANS_TO_DEGREES;
+ lat = dest.lat() * SG_RADIANS_TO_DEGREES;
+ addLightning( lon, lat, alt );
+
+ // reset timer
+ min_time_before_lt = 5.0 + sg_random() * 30;
+ // DEBUG only
+// min_time_before_lt = 5.0;
+ }
+ if( (alt - radius * 0.1) > precipitation_max_alt )
+ switch(family) {
+ case SGNewCloud::CLFamilly_st:
+ case SGNewCloud::CLFamilly_cu:
+ case SGNewCloud::CLFamilly_cb:
+ case SGNewCloud::CLFamilly_ns:
+ case SGNewCloud::CLFamilly_sc:
+ precipitation_max_alt = alt - radius * 0.1;
+ break;
+ }
+}
+
+#endif
+
+list_of_SGWxRadarEcho *SGEnviro::get_radar_echo(void) {
+ return &radarEcho;
+}
+
+// precipitation rendering code
+void SGEnviro::DrawCone2(float baseRadius, float height, int slices, bool down, double rain_norm, double speed) {
+ // OSGFIXME
+ return;
+}
+
+void SGEnviro::drawRain(double pitch, double roll, double heading, double hspeed, double rain_norm) {
+ // OSGFIXME
+ return;
+}
+
+void SGEnviro::set_sampleGroup(SGSampleGroup *sgr) {
+ sampleGroup = sgr;
+}
+
+void SGEnviro::drawPrecipitation(double rain_norm, double snow_norm, double hail_norm, double pitch, double roll, double heading, double hspeed) {
+ // OSGFIXME
+ return;
+ if( precipitation_enable_state && rain_norm > 0.0)
+ if( precipitation_max_alt >= last_alt )
+ drawRain(pitch, roll, heading, hspeed, rain_norm);
+}
+
+
+SGLightning::SGLightning(double _lon, double _lat, double _alt) :
+ nb_tree(0),
+ lon(_lon),
+ lat(_lat),
+ alt(_alt),
+ age(1.0 + sg_random() * 4.0)
+{
+// sequence_count = 1 + sg_random() * 5.0;
+ lt_build();
+}
+
+SGLightning::~SGLightning() {
+}
+
+// lightning rendering code
+void SGLightning::lt_build_tree_branch(int tree_nr, SGVec3d &start, float energy, int nbseg, float segsize) {
+ // OSGFIXME
+ return;
+}
+
+void SGLightning::lt_build(void) {
+ // OSGFIXME
+ return;
+}
+
+
+void SGLightning::lt_Render(void) {
+ // OSGFIXME
+ return;
+}
+
+void SGEnviro::addLightning(double lon, double lat, double alt) {
+ // OSGFIXME
+ return;
+ if( lightnings.size() > 10)
+ return;
+ SGLightning *lt= new SGLightning(lon, lat, alt);
+ lightnings.push_back(lt);
+}
+
+void SGEnviro::drawLightning(void) {
+ // OSGFIXME
+ return;
+}
+
+
+void SGEnviro::setFOV( float w, float h ) {
+ fov_width = w;
+ fov_height = h;
+}
+
+void SGEnviro::getFOV( float &w, float &h ) {
+ w = fov_width;
+ h = fov_height;
+}
projects / simgear.git / blobdiff