Trygve/contour-creator
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base: Trygve:0188b9e29d5f52a2126e05a456c6d1ba47c9399f
Branches Tags
Trygve:main
Trygve:7-5-2024
Trygve:Statistics
Trygve:drawing-lines
Trygve:cli-arguments
Trygve:restructure
..
compare: Trygve:d046e18c43d883eb7d60cf77aac60a8782044a6c
Branches Tags
Trygve:7-5-2024
Trygve:main
Trygve:Statistics
Trygve:drawing-lines
Trygve:cli-arguments
Trygve:restructure

No commits in common. "0188b9e29d5f52a2126e05a456c6d1ba47c9399f" and "d046e18c43d883eb7d60cf77aac60a8782044a6c" have entirely different histories.
0188b9e29d ... d046e18c43

1 changed files with 34 additions and 80 deletions
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114
src/main.cpp
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@ -36,8 +36,6 @@ std::vector<Point> produce_cellmap(HeightMap* heightmap, float z)
}
std::vector<std::vector<Point>> vector_cellmap(HeightMap* heightmap, int interval)
{
int num_contours = (heightmap->max - heightmap->min)/interval;
@ -50,44 +48,9 @@ std::vector<std::vector<Point>> vector_cellmap(HeightMap* heightmap, int interva
#pragma omp for
for (int i = 1; i <= num_contours; i++)
{
auto points = produce_cellmap(heightmap, heightmap->min + interval*i) ;
std::vector<Point> line;
line.push_back(points.back());
points.pop_back();
while (points.size() != 0){
Point current_point = points.back();
for (int j=0; j < points.size(); j++){
Point next = points[j];
if (&next != &points.back()) {
if (next.x +1 == current_point.x) {
line.push_back(next);
points.erase(points.begin()+j);
}
else if (next.x -1 == current_point.x) {
line.push_back(next);
points.erase(points.begin()+j);
}
else if (next.y +1 == current_point.y) {
line.push_back(next);
points.erase(points.begin()+j);
}
else if (next.y -1 == current_point.y) {
line.push_back(next);
points.erase(points.begin()+j);
}
else {
vec_private.push_back(line);
std::vector<Point> line;
line.push_back(points.back());
points.pop_back();
}
}
}
}
vec_private.push_back(produce_cellmap(heightmap, heightmap->min + interval*i));
}
#pragma omp critical
vector_contours.insert(vector_contours.end(), vec_private.begin(), vec_private.end());
}
@ -123,7 +86,7 @@ constexpr std::tuple<double, double, double, double> marching_squares_lookup(int
case 14: return {0, 0.5, 0.5, 0};
};
}
void write_output_file(std::vector<std::vector<Point>> all_points, const char *filepath, HeightMap* heightmap)
void write_output_file(std::vector<CellMap> cellmaps, const char *filepath)
{
const char *pszDriverName = "GeoJSON";
@ -149,7 +112,7 @@ void write_output_file(std::vector<std::vector<Point>> all_points, const char *f
OGRLayer *poLayer;
poLayer = poDS->CreateLayer( "contours", /*&(cellmaps[0]).reference_system*/ NULL, wkbLineString, NULL );
poLayer = poDS->CreateLayer( "contours", &(cellmaps[0]).reference_system, wkbLineString, NULL );
if( poLayer == NULL )
{
printf( "Layer creation failed.\n" );
@ -165,51 +128,42 @@ void write_output_file(std::vector<std::vector<Point>> all_points, const char *f
printf( "Creating Name field failed.\n" );
exit( 1 );
}
int width = heightmap->width -1;
int height = heightmap->height -1;
int size = width * height;
for (int j = 0; j < all_points.size(); j++)
for (int j = 0; j < cellmaps.size(); j++)
{
OGRFeature *feature;
OGRLineString *geometry = new OGRLineString();
feature = OGRFeature::CreateFeature( poLayer->GetLayerDefn() );
feature->SetField( "Name", j );
CellMap* cellmap = &cellmaps[j];
std::vector<Point> points = all_points[j];
for (int i = 0; i < points.size(); i++)
for (int i = 0; i < cellmap->height*cellmap->width; i++)
{
//int x_raw = i%width;
//int y_raw = i/height;
int x_raw = points[i].x;
int y_raw = points[i].y;
auto [x, y] = local_to_projected(heightmap->geotransform, x_raw, y_raw);
//auto [x_bl, y_bl, x_tr, y_tr] = marching_squares_lookup(*(cellmap->cells + i) );
//std::cout << x << ", " << y << " ";
//geometry->setPoint( geometry->getNumPoints(), x+x_tr*0.25, y+y_tr*0.25 );
//geometry->setPoint( geometry->getNumPoints(), x+x_bl*0.25, y+y_bl*0.25 );
geometry->setPoint(geometry->getNumPoints(),x ,y );
if (*(cellmap->cells + i) != 0 && *(cellmap->cells + i) != 15)
{
OGRFeature *feature;
OGRLineString *geometry = new OGRLineString();
feature = OGRFeature::CreateFeature( poLayer->GetLayerDefn() );
feature->SetField( "Name", j );
int x_raw = i%cellmap->width;
int y_raw = i/cellmap->width;
auto [x, y] = local_to_projected(cellmap->geotransform, x_raw, y_raw);
auto [x_bl, y_bl, x_tr, y_tr] = marching_squares_lookup(*(cellmap->cells + i) );
//std::cout << x << ", " << y << " ";
geometry->setPoint( geometry->getNumPoints(), x+x_tr*0.25, y+y_tr*0.25 );
geometry->setPoint( geometry->getNumPoints(), x+x_bl*0.25, y+y_bl*0.25 );
if ( feature->SetGeometry(geometry) != OGRERR_NONE)
{
printf( "Failed to set geometry.\n" );
exit( 1 );
}
OGRGeometryFactory::destroyGeometry(geometry);
if( poLayer->CreateFeature( feature ) != OGRERR_NONE )
{
printf( "Failed to create feature in shapefile.\n" );
exit( 1 );
}
OGRFeature::DestroyFeature( feature );
}
}
if ( feature->SetGeometry(geometry) != OGRERR_NONE)
{
printf( "Failed to set geometry.\n" );
exit( 1 );
}
OGRGeometryFactory::destroyGeometry(geometry);
if( poLayer->CreateFeature( feature ) != OGRERR_NONE )
{
printf( "Failed to create feature in shapefile.\n" );
exit( 1 );
}
OGRFeature::DestroyFeature( feature );
}
@ -230,5 +184,5 @@ int main(int argc, const char* argv[])
auto cellmap = produce_cellmap(&map, 40);
auto cellmaps = vector_cellmap(&map, 5);
write_output_file(cellmaps, "out.geojson", &map);
//write_output_file(cellmaps, "out.geojson");
}