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//Copyright (c) 2019 Ultimaker B.V.
//CuraEngine is released under the terms of the AGPLv3 or higher.
#include "ReadTestPolygons.h"
#include <cstdio>
// NOTE: See the documentation in the header-file for an explanation of this simple file format.
namespace cura
{
// Read multiple files to the collection of polygons.
// Returns boolean success/failure (read errors, not found, etc.).
bool readTestPolygons(const std::vector<std::string>& filenames, std::vector<Polygons>& polygons_out)
{
for (const std::string& filename : filenames)
{
if (!readTestPolygons(filename, polygons_out))
{
return false;
}
}
return true;
}
// Read a single file to the collection of polygons.
// Returns boolean success/failure (read errors, not found, etc.).
bool readTestPolygons(const std::string& filename, std::vector<Polygons>& polygons_out)
{
FILE* handle = std::fopen(filename.c_str(), "r");
if (!handle)
{
return false;
}
Polygon next_path;
Polygons next_shape;
char command = '_';
int read = 0;
while (command != '#')
{
read = std::fscanf(handle, " %c ", &command);
if (read == EOF)
{
command = '#';
}
else if (read <= 0)
{
return false;
}
switch (command)
{
case 'v': // read next coordinate
coord_t coord_x, coord_y;
read = std::fscanf(handle, " %lld %lld ", &coord_x, &coord_y);
if (read == EOF || read <= 0)
{
return false;
}
next_path.emplace_back(coord_x, coord_y);
break;
case 'x': // close 'next' loop
// fallthrough
case '&': // finalize 'next' polygon (which may also close a loop)
// fallthrough
case '#': // end of file
if (!next_path.empty())
{
next_shape.add(Polygon(next_path)); // copy and add
next_path.clear();
}
if (command != 'x' && !next_shape.empty())
{
polygons_out.push_back(Polygons(next_shape)); // copy and add
next_shape.clear();
}
break;
default:
return false;
}
}
return true;
}
} // namespace cura
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