#include <simgear/structure/SGSharedPtr.hxx>
#include <simgear/math/sg_random.h>
#include <simgear/math/sg_geodesy.hxx>
-#include <simgear/math/point3d.hxx>
-#include <simgear/math/polar3d.hxx>
#include <simgear/sound/sample_group.hxx>
#include <simgear/scene/sky/cloudfield.hxx>
#include <simgear/scene/sky/newcloud.hxx>
typedef struct {
- Point3D pt;
+ SGVec3d pt;
int depth;
int prev;
} lt_tree_seg;
~SGLightning();
void lt_Render(void);
void lt_build(void);
- void lt_build_tree_branch(int tree_nr, Point3D &start, float energy, int nbseg, float segsize);
+ 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];
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;
- Point3D orig, dest;
+ SGVec3d orig, dest;
orig.setlat(last_lat * SG_DEGREES_TO_RADIANS );
orig.setlon(last_lon * SG_DEGREES_TO_RADIANS );
orig.setelev(0.0);
}
// lightning rendering code
-void SGLightning::lt_build_tree_branch(int tree_nr, Point3D &start, float energy, int nbseg, float segsize) {
+void SGLightning::lt_build_tree_branch(int tree_nr, SGVec3d &start, float energy, int nbseg, float segsize) {
// OSGFIXME
return;
-
- sgVec3 dir, newdir;
- int nseg = 0;
- Point3D pt = start;
- if( nbseg == 50 )
- sgSetVec3( dir, 0.0, -1.0, 0.0 );
- else {
- sgSetVec3( dir, sg_random() - 0.5f, sg_random() - 0.5f, sg_random() - 0.5f);
- sgNormaliseVec3(dir);
- }
- if( nb_tree >= MAX_LT_TREE_SEG )
- return;
-
- lt_tree[nb_tree].depth = tree_nr;
- nseg = 0;
- lt_tree[nb_tree].pt = pt;
- lt_tree[nb_tree].prev = -1;
- nb_tree ++;
-
- // TODO:check agl
- while(nseg < nbseg && pt.y() > 0.0) {
- int prev = nb_tree - 1;
- nseg++;
- // add a branch
- if( energy * sg_random() > 0.8f )
- lt_build_tree_branch(tree_nr + 1, pt, energy * 0.9f, nbseg == 50 ? 10 : static_cast<int>(nbseg * 0.4f), segsize * 0.7f);
-
- if( nb_tree >= MAX_LT_TREE_SEG )
- return;
- sgSetVec3(newdir, (sg_random() - 0.5f), (sg_random() - 0.5f) - (nbseg == 50 ? 0.5f : 0.0), (sg_random() - 0.5f));
- sgNormaliseVec3(newdir);
- sgAddVec3( dir, newdir);
- sgNormaliseVec3(dir);
- sgVec3 scaleDir;
- sgScaleVec3( scaleDir, dir, segsize * energy * 0.5f );
- pt[PX] += scaleDir[0];
- pt[PY] += scaleDir[1];
- pt[PZ] += scaleDir[2];
-
- lt_tree[nb_tree].depth = tree_nr;
- lt_tree[nb_tree].pt = pt;
- lt_tree[nb_tree].prev = prev;
- nb_tree ++;
- }
}
void SGLightning::lt_build(void) {
// OSGFIXME
return;
- Point3D top;
- nb_tree = 0;
- top[PX] = 0 ;
- top[PY] = alt;
- top[PZ] = 0;
- lt_build_tree_branch(0, top, 1.0, 50, top[PY] / 8.0);
- if( ! sgEnviro.sampleGroup )
- return;
- Point3D start( sgEnviro.last_lon*SG_DEGREES_TO_RADIANS, sgEnviro.last_lat*SG_DEGREES_TO_RADIANS, 0.0 );
- Point3D dest( lon*SG_DEGREES_TO_RADIANS, lat*SG_DEGREES_TO_RADIANS, 0.0 );
- double course = 0.0, dist = 0.0;
- calc_gc_course_dist( dest, start, &course, &dist );
- if( dist < 10000.0 && ! sgEnviro.snd_playing && (dist < sgEnviro.snd_dist || ! sgEnviro.snd_active) ) {
- sgEnviro.snd_timer = 0.0;
- sgEnviro.snd_wait = dist / 340;
- sgEnviro.snd_dist = dist;
- sgEnviro.snd_pos_lat = lat;
- sgEnviro.snd_pos_lon = lon;
- sgEnviro.snd_active = true;
- sgEnviro.snd_playing = false;
- }
+
}
void SGLightning::lt_Render(void) {
// OSGFIXME
return;
- float flash = 0.5;
- if( fmod(sgEnviro.elapsed_time*100.0, 100.0) > 50.0 )
- flash = sg_random() * 0.75f + 0.25f;
- float h = lt_tree[0].pt[PY];
- sgVec4 col={0.62f, 0.83f, 1.0f, 1.0f};
- sgVec4 c;
-
-#define DRAW_SEG() \
- {glColorMaterial(GL_FRONT, GL_EMISSION); \
- glDisable(GL_LINE_SMOOTH); glBegin(GL_LINES); \
- glColor4fv(c); \
- glVertex3f(lt_tree[n].pt[PX], lt_tree[n].pt[PZ], lt_tree[n].pt[PY]); \
- glVertex3f(lt_tree[lt_tree[n].prev].pt[PX], lt_tree[lt_tree[n].prev].pt[PZ], lt_tree[lt_tree[n].prev].pt[PY]); \
- glEnd(); glEnable(GL_LINE_SMOOTH);}
-
- glDepthMask( GL_FALSE );
- glEnable(GL_BLEND);
- glBlendFunc( GL_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
- glBindTexture(GL_TEXTURE_2D, 0);
-
- glDisable(GL_LIGHTING);
- glDisable( GL_FOG );
- glPushMatrix();
- sgMat4 modelview, tmp;
- // OSGFIXME
-// ssgGetModelviewMatrix( modelview );
- sgCopyMat4( tmp, sgEnviro.transform );
- sgPostMultMat4( tmp, modelview );
- // OSGFIXME
-// ssgLoadModelviewMatrix( tmp );
-
- Point3D start( sgEnviro.last_lon*SG_DEGREES_TO_RADIANS, sgEnviro.last_lat*SG_DEGREES_TO_RADIANS, 0.0 );
- Point3D dest( lon*SG_DEGREES_TO_RADIANS, lat*SG_DEGREES_TO_RADIANS, 0.0 );
- double course = 0.0, dist = 0.0;
- calc_gc_course_dist( dest, start, &course, &dist );
- double ax = 0.0, ay = 0.0;
- ax = cos(course) * dist;
- ay = sin(course) * dist;
-
- glTranslatef( ax, ay, -sgEnviro.last_alt );
-
- sgEnviro.radarEcho.push_back( SGWxRadarEcho ( course, 0.0, 0.0, dist, age, true, 0 ) );
-
- for( int n = 0 ; n < nb_tree ; n++ ) {
- if( lt_tree[n].prev < 0 )
- continue;
-
- float t1 = sgLerp(0.5, 1.0, lt_tree[n].pt[PY] / h);
- t1 *= flash;
- if( lt_tree[n].depth >= 2 ) {
- glLineWidth(3);
- sgScaleVec4(c, col, t1 * 0.6f);
- DRAW_SEG();
- } else {
- if( lt_tree[n].depth == 0 ) {
- glLineWidth(12);
- sgScaleVec4(c, col, t1 * 0.5f);
- DRAW_SEG();
-
- glLineWidth(6);
- sgScaleVec4(c, col, t1);
- DRAW_SEG();
- } else {
- glLineWidth(6);
- sgScaleVec4(c, col, t1 * 0.7f);
- DRAW_SEG();
- }
-
- if( lt_tree[n].depth == 0 )
- glLineWidth(3);
- else
- glLineWidth(2);
-
- sgSetVec4(c, t1, t1, t1, t1);
- DRAW_SEG();
- }
-
- }
- glLineWidth(1);
- glBlendFunc ( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ) ;
- glPopMatrix();
- glDepthMask( GL_TRUE );
- glEnable( GL_FOG );
- glEnable(GL_LIGHTING);
}
void SGEnviro::addLightning(double lon, double lat, double alt) {
void SGEnviro::drawLightning(void) {
// OSGFIXME
return;
- list_of_lightning::iterator iLightning;
- // play 'thunder' for lightning
- if( snd_active ) {
- if( !snd_playing ) {
- // wait until sound has reached us
- snd_timer += dt;
- if( snd_timer >= snd_wait ) {
- snd_playing = true;
- // compute relative position of lightning
- Point3D start( sgEnviro.last_lon*SG_DEGREES_TO_RADIANS, sgEnviro.last_lat*SG_DEGREES_TO_RADIANS, 0.0 );
- Point3D dest( snd_pos_lon*SG_DEGREES_TO_RADIANS, snd_pos_lat*SG_DEGREES_TO_RADIANS, 0.0 );
- double course = 0.0, dist = 0.0;
- calc_gc_course_dist( dest, start, &course, &dist );
- double ax = 0.0, ay = 0.0;
- ax = cos(course) * dist;
- ay = sin(course) * dist;
- SGSharedPtr<SGSoundSample> snd = sampleGroup->find("thunder");
- if( snd ) {
- SGVec3d pos = SGVec3d(ax, ay, -sgEnviro.last_alt);
- snd->set_position(pos);
- snd->play_once();
- }
- }
- } else {
- if( !sampleGroup->is_playing("thunder") ) {
- snd_active = false;
- snd_playing = false;
- }
- }
-
- }
- if( ! lightning_enable_state )
- return;
-
- for( iLightning = lightnings.begin() ; iLightning != lightnings.end() ; iLightning++ ) {
- if( dt )
- if( sg_random() > 0.95f )
- (*iLightning)->lt_build();
- (*iLightning)->lt_Render();
- (*iLightning)->age -= dt;
- if( (*iLightning)->age < 0.0 ) {
- delete (*iLightning);
- lightnings.erase( iLightning );
- break;
- }
- }
-
}
projects / simgear.git / blobdiff