fly/flightgear
1
0
Fork 0
Code Activity

Modifications to fanify by attribute.

Browse source
This commit is contained in:
curt 1999-03-30 23:50:43 +00:00
parent 0b74b1bbf2
commit 21b1516131
2 changed files with 70 additions and 37 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

98
GenOutput/genobj.cxx
View file

@ -191,8 +191,26 @@ int FGGenOutput::build( const FGArray& array, const FGTriangle& t ) {
tri_elements = t.get_elelist();
// build the trifan list
cout << "total triangles = " << tri_elements.size() << endl;
FGGenFans f;
fans = f.greedy_build( tri_elements );
for ( int i = 0; i < FG_MAX_AREA_TYPES; ++i ) {
cout << "generating fans for area = " << i << endl;
triele_list area_tris;
area_tris.erase( area_tris.begin(), area_tris.end() );
const_triele_list_iterator t_current = tri_elements.begin();
const_triele_list_iterator t_last = tri_elements.end();
for ( ; t_current != t_last; ++t_current ) {
if ( (int)t_current->get_attribute() == i ) {
area_tris.push_back( *t_current );
}
}
if ( (int)area_tris.size() > 0 ) {
fans[i] = f.greedy_build( area_tris );
}
}
// generate the point list in wgs-84 coordinates
gen_wgs84_points( array );
@ -215,25 +233,24 @@ int FGGenOutput::build( const FGArray& array, const FGTriangle& t ) {
// caclulate the bounding sphere for a list of triangle faces
void FGGenOutput::calc_group_bounding_sphere( const triele_list& tris,
void FGGenOutput::calc_group_bounding_sphere( const fan_list& fans,
Point3D *center, double *radius )
{
cout << "calculate group bounding sphere for " << tris.size() << " tris."
cout << "calculate group bounding sphere for " << fans.size() << " fans."
<< endl;
// generate a list of unique points from the triangle list
FGTriNodes nodes;
const_triele_list_iterator t_current = tris.begin();
const_triele_list_iterator t_last = tris.end();
for ( ; t_current != t_last; ++t_current ) {
Point3D p1 = wgs84_nodes[ t_current->get_n1() ];
Point3D p2 = wgs84_nodes[ t_current->get_n2() ];
Point3D p3 = wgs84_nodes[ t_current->get_n3() ];
const_fan_list_iterator f_current = fans.begin();
const_fan_list_iterator f_last = fans.end();
for ( ; f_current != f_last; ++f_current ) {
const_int_list_iterator i_current = f_current->begin();
const_int_list_iterator i_last = f_current->end();
for ( ; i_current != i_last; ++i_current ) {
Point3D p1 = wgs84_nodes[ *i_current ];
nodes.unique_add(p1);
nodes.unique_add(p2);
nodes.unique_add(p3);
}
}
// find average of point list
@ -357,42 +374,52 @@ int FGGenOutput::write( const string& base, const FGBucket& b ) {
// write triangles (grouped by type for now)
Point3D center;
double radius;
fprintf(fp, "# triangle list\n");
fprintf(fp, "# triangle groups\n");
fprintf(fp, "\n");
int total_tris = 0;
for ( int i = 0; i < FG_MAX_AREA_TYPES; ++i ) {
triele_list area_tris;
area_tris.erase( area_tris.begin(), area_tris.end() );
const_triele_list_iterator t_current = tri_elements.begin();
const_triele_list_iterator t_last = tri_elements.end();
for ( ; t_current != t_last; ++t_current ) {
if ( (int)t_current->get_attribute() == i ) {
area_tris.push_back( *t_current );
}
}
if ( (int)area_tris.size() > 0 ) {
if ( (int)fans[i].size() > 0 ) {
string attr_name = get_area_name( (AreaType)i );
calc_group_bounding_sphere( area_tris, &center, &radius );
cout << "writing " << (int)area_tris.size() << " faces for "
calc_group_bounding_sphere( fans[i], &center, &radius );
cout << "writing " << (int)fans[i].size() << " fans for "
<< attr_name << endl;
fprintf(fp, "# usemtl %s\n", attr_name.c_str() );
fprintf(fp, "# bs %.4f %.4f %.4f %.2f\n",
center.x(), center.y(), center.z(), radius);
triele_list_iterator a_current = area_tris.begin();
triele_list_iterator a_last = area_tris.end();
for ( ; a_current != a_last; ++a_current ) {
fprintf( fp, "f %d %d %d\n",
a_current->get_n1(),
a_current->get_n2(),
a_current->get_n3() );
fan_list_iterator f_current = fans[i].begin();
fan_list_iterator f_last = fans[i].end();
for ( ; f_current != f_last; ++f_current ) {
fprintf( fp, "tf" );
int_list_iterator i_current = f_current->begin();
int_list_iterator i_last = f_current->end();
for ( ; i_current != i_last; ++i_current ) {
fprintf( fp, " %d", *i_current );
}
fprintf( fp, "\n" );
{
int_list_iterator i_current = f_current->begin();
int_list_iterator i_last = f_current->end();
int center = *i_current;
++i_current;
int n2 = *i_current;
++i_current;
for ( ; i_current != i_last; ++i_current ) {
int n3 = *i_current;
fprintf( fp, "f %d %d %d\n", center, n2, n3 );
++total_tris;
n2 = n3;
}
}
}
fprintf( fp, "\n" );
}
}
cout << "wrote " << total_tris << " tris to output file" << endl;
fclose(fp);
@ -404,6 +431,9 @@ int FGGenOutput::write( const string& base, const FGBucket& b ) {
// $Log$
// Revision 1.7 1999/03/30 23:50:43 curt
// Modifications to fanify by attribute.
//
// Revision 1.6 1999/03/29 13:11:03 curt
// Shuffled stl type names a bit.
// Began adding support for tri-fanning (or maybe other arrangments too.)

7
GenOutput/genobj.hxx
View file

@ -74,7 +74,7 @@ private:
triele_list tri_elements;
// fan list
fan_list fans;
fan_list fans[FG_MAX_AREA_TYPES];
// for each node, a list of triangle indices that contain this node
belongs_to_list reverse_ele_lookup;
@ -105,7 +105,7 @@ private:
void calc_gbs();
// caclulate the bounding sphere for a list of triangle faces
void calc_group_bounding_sphere( const triele_list& tris,
void calc_group_bounding_sphere( const fan_list& fans,
Point3D *center, double *radius );
// caclulate the bounding sphere for the specified triangle face
@ -131,6 +131,9 @@ public:
// $Log$
// Revision 1.8 1999/03/30 23:50:44 curt
// Modifications to fanify by attribute.
//
// Revision 1.7 1999/03/29 13:11:04 curt
// Shuffled stl type names a bit.
// Began adding support for tri-fanning (or maybe other arrangments too.)