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Use linked list to store the order of the points

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Trygve 2024-05-05 16:53:00 +02:00
parent 4cd4f773bf
commit 4f709d3b07
1 changed files with 29 additions and 15 deletions
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44
src/main.cpp
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@ -7,12 +7,14 @@
#include <iostream> #include <iostream>
#include <iterator> #include <iterator>
#include <ostream> #include <ostream>
#include <string>
#include <vector> #include <vector>
#include <cstdint> #include <cstdint>
#include <gdal/gdal.h> #include <gdal/gdal.h>
#include "gdal/gdal_priv.h" #include "gdal/gdal_priv.h"
#include <gdal/gdal_frmts.h> #include <gdal/gdal_frmts.h>
#include <omp.h> #include <omp.h>
#include <fstream>
std::vector<Point> produce_cellmap(HeightMap* heightmap, float z) std::vector<Point> produce_cellmap(HeightMap* heightmap, float z)
{ {
@ -45,10 +47,10 @@ std::vector<std::vector<Point>> vector_cellmap(HeightMap* heightmap, int interva
std::vector<std::vector<Point>> vector_contours; std::vector<std::vector<Point>> vector_contours;
omp_set_num_threads(12); omp_set_num_threads(12);
#pragma omp parallel //#pragma omp parallel
{ {
std::vector<std::vector<Point>> vec_private; std::vector<std::vector<Point>> vec_private;
#pragma omp for //#pragma omp for
for (int i = 1; i <= num_contours; i++) for (int i = 1; i <= num_contours; i++)
{ {
auto points = produce_cellmap(heightmap, heightmap->min + interval*i); auto points = produce_cellmap(heightmap, heightmap->min + interval*i);
@ -86,15 +88,17 @@ std::vector<std::vector<Point>> vector_cellmap(HeightMap* heightmap, int interva
if (current->next == nullptr) if (current->next == nullptr)
{ {
current->endpoint = true; current->endpoint = true;
std::cout << "🤕"; std::cout << "🤕";std::cout.flush();
} }
} }
vec_private.push_back(points); //vec_private.push_back(points);
vector_contours.push_back(points);
std::cout << vector_contours.size();
} }
#pragma omp critical //#pragma omp critical
vector_contours.insert(vector_contours.end(), vec_private.begin(), vec_private.end()); //vector_contours.insert(vector_contours.end(), vec_private.begin(), vec_private.end());
} }
return vector_contours; return vector_contours;
@ -183,33 +187,44 @@ void write_output_file(std::vector<std::vector<Point>> all_points, const char *f
feature->SetField( "Name", j ); feature->SetField( "Name", j );
std::vector<Point> points = all_points[j]; std::vector<Point>* points = &all_points[j];
Point* current = &points[50];
Point* current = &points->at(0);
int points_allocated = 0;
while (true) while (true)
{ {
//int x_raw = i%width; //int x_raw = i%width;
//int y_raw = i/height; //int y_raw = i/height;
int x_raw = current->x; int x_raw = current->x;
int y_raw = current->y; int y_raw = current->y;
/*
if (x_raw > 500 || y_raw > 400)
{
std::cout << "🤯";std::cout.flush();
continue;
}
*/
auto [x, y] = local_to_projected(heightmap->geotransform, x_raw, y_raw); 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) ); //auto [x_bl, y_bl, x_tr, y_tr] = marching_squares_lookup(*(cellmap->cells + i) );
//std::cout << x_raw << ", " << y_raw << " ";std::cout.flush(); //std::cout << x_raw << ", " << y_raw << " ";std::cout.flush();
//geometry->setPoint( geometry->getNumPoints(), x+x_tr*0.25, y+y_tr*0.25 ); //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+x_bl*0.25, y+y_bl*0.25 );
geometry->setPoint(geometry->getNumPoints(),x_raw ,y_raw ); geometry->setPoint(geometry->getNumPoints(),x ,y );
current->allocated = true; current->allocated = true;
current = current->previous; current = current->previous;
//current sometimes becomes random pointer????? //current sometimes becomes random pointer?????
if (current == nullptr) if (current == nullptr or current->allocated)
{ {
for (int k = 0; k<points.size(); k++) for (int k = 0; k<points->size(); k++)
{ {
if (points[k].endpoint and !points[k].allocated) if (points->at(k).endpoint and !points->at(k).allocated)
{ {
current = &points[k]; current = &points->at(k);
} }
} }
if (current == nullptr){std::cout << "🫠"; break; } if (current == nullptr){std::cout << "🫠";std::cout.flush(); break; }
} }
} }
@ -225,7 +240,6 @@ void write_output_file(std::vector<std::vector<Point>> all_points, const char *f
exit( 1 ); exit( 1 );
} }
OGRFeature::DestroyFeature( feature ); OGRFeature::DestroyFeature( feature );
break;
} }
GDALClose( poDS ); GDALClose( poDS );