82 lines
No EOL
2.7 KiB
C++
82 lines
No EOL
2.7 KiB
C++
#include "catch.hpp"
|
|
|
|
#include <iostream>
|
|
#include <vector>
|
|
#include <string>
|
|
#include <algorithm>
|
|
|
|
#include <mapnik/layer.hpp>
|
|
#include <mapnik/wkt/wkt_factory.hpp>
|
|
#include <mapnik/wkt/wkt_generator_grammar.hpp>
|
|
#include <mapnik/simplify.hpp>
|
|
#include <mapnik/simplify_converter.hpp>
|
|
|
|
// stl
|
|
#include <stdexcept>
|
|
|
|
// Convenience method for test cases
|
|
void simplify(std::string const& wkt_in, double tolerance, std::string const& method, std::string const& expected)
|
|
{
|
|
#if 0 // FIXME
|
|
//grab the geom
|
|
mapnik::geometry_container multi_input;
|
|
if (!mapnik::from_wkt(wkt_in , multi_input))
|
|
{
|
|
throw std::runtime_error("Failed to parse WKT");
|
|
}
|
|
//setup the generalization
|
|
mapnik::vertex_adapter va(multi_input.front());
|
|
mapnik::simplify_converter<mapnik::vertex_adapter> generalizer(va);
|
|
generalizer.set_simplify_algorithm(mapnik::simplify_algorithm_from_string(method).get());
|
|
generalizer.set_simplify_tolerance(tolerance);
|
|
//suck the vertices back out of it
|
|
mapnik::geometry_type* output = new mapnik::geometry_type(multi_input.front().type());
|
|
mapnik::CommandType cmd;
|
|
double x, y;
|
|
while ((cmd = (mapnik::CommandType)generalizer.vertex(&x, &y)) != mapnik::SEG_END)
|
|
{
|
|
output->push_vertex(x, y, cmd);
|
|
}
|
|
//construct the answer
|
|
mapnik::geometry_container multi_out;
|
|
multi_out.push_back(output);
|
|
std::string wkt_out;
|
|
REQUIRE(mapnik::to_wkt(multi_out, wkt_out));
|
|
REQUIRE(wkt_out == expected);
|
|
#endif
|
|
}
|
|
|
|
TEST_CASE("converters") {
|
|
|
|
SECTION("simplify") {
|
|
|
|
simplify( std::string("LineString(0 0,2 2,3 5,4 1,5 0,6 7,7 0)"),
|
|
4, "douglas-peucker",
|
|
std::string("LineString(0 0,6 7,7 0)"));
|
|
|
|
simplify( std::string("LineString(0 0,2 2,3 5,4 1,5 0,6 7,7 0)"),
|
|
2, "douglas-peucker",
|
|
std::string("LineString(0 0,3 5,5 0,6 7,7 0)"));
|
|
|
|
simplify( std::string("LineString(10 0,9 -4,7 -7,4 -9,0 -10,-4 -9,-7 -7,-9 -4,-10 0,-9 4,-7 7,-4 9,0 10,4 9,7 7,9 4)"),
|
|
4, "douglas-peucker",
|
|
std::string("LineString(10 0,0 -10,-10 0,0 10,9 4)"));
|
|
|
|
simplify( std::string("LineString(0 0,1 1,2 2,0 10,0 0)"),
|
|
10, "douglas-peucker",
|
|
std::string("LineString(0 0,0 0)"));
|
|
|
|
simplify( std::string("LineString(0 0,1 1,2 2,0 10,0 0)"),
|
|
8, "douglas-peucker",
|
|
std::string("LineString(0 0,0 10,0 0)"));
|
|
|
|
simplify( std::string("LineString(0 0,1 1,2 2,0 10,0 0)"),
|
|
1, "douglas-peucker",
|
|
std::string("LineString(0 0,2 2,0 10,0 0)"));
|
|
|
|
simplify( std::string("LineString(0 0, 1 -1, 2 2, 0 -10, 0 0, -5 7, 4 6)"),
|
|
3, "douglas-peucker",
|
|
std::string("LineString(0 0,0 -10,-5 7,4 6)"));
|
|
|
|
}
|
|
} |