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Try to be just a bit smarter about how to assign an area type to a triangle.

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curt 2003-08-20 17:18:50 +00:00
parent 83ebd1eba7
commit 0dc39b1911
1 changed files with 13 additions and 10 deletions
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23
src/BuildTiles/Main/main.cxx
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@ -262,10 +262,11 @@ static AreaType get_area_type (const LandCover &cover,
}
}
// OK, give up and return default
// OK, give up and return default
return DefaultArea;
}
// make the area specified area, look up the land cover type, and add
// it to polys
static void make_area( const LandCover &cover, TGPolygon *polys,
@ -616,18 +617,20 @@ static void fix_land_cover_assignments( TGConstruct& c ) {
cout << " Total Nodes = " << geod_nodes.size() << endl;
cout << " Total triangles = " << tri_elements.size() << endl;
for ( unsigned int i = 0; i < tri_elements.size(); ++i ) {
const double dx = 1.0 / 120.0;
const double dy = 1.0 / 120.0;
TGTriEle t = tri_elements[i];
if ( t.get_attribute() == DefaultArea ) {
Point3D p1 = geod_nodes[t.get_n1()];
Point3D p2 = geod_nodes[t.get_n2()];
Point3D p3 = geod_nodes[t.get_n3()];
AreaType a1 = get_area_type ( c.get_cover(), p1.x(), p1.y(),
1.0 / 120.0, 1.0 / 120.0 );
AreaType a2 = get_area_type ( c.get_cover(), p2.x(), p2.y(),
1.0 / 120.0, 1.0 / 120.0 );
AreaType a3 = get_area_type ( c.get_cover(), p3.x(), p3.y(),
1.0 / 120.0, 1.0 / 120.0 );
AreaType a1 = get_area_type( c.get_cover(), p1.x(), p1.y(),
dx, dy );
AreaType a2 = get_area_type( c.get_cover(), p2.x(), p2.y(),
dx, dy );
AreaType a3 = get_area_type( c.get_cover(), p3.x(), p3.y(),
dx, dy );
// update the original triangle element attribute
AreaType new_area;
@ -644,9 +647,9 @@ static void fix_land_cover_assignments( TGConstruct& c ) {
// from the middle/average
Point3D average = ( p1 + p2 + p3 ) / 3.0;
cout << " average triangle center = " << average;
new_area = get_area_type ( c.get_cover(),
average.x(), average.y(),
1.0 / 120.0, 1.0 / 120.0 );
new_area = get_area_type( c.get_cover(),
average.x(), average.y(),
dx, dy );
}
cout << " new attrib = " << get_area_name( new_area ) << endl;