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#include "catch.hpp"
#include "unit/vertex_adapter/fake_path.hpp"
#include <mapnik/geometry/polygon_vertex_processor.hpp>
TEST_CASE("polygon_vertex_processor")
{
SECTION("empty polygon")
{
fake_path path = {};
mapnik::geometry::polygon_vertex_processor<double> proc;
proc.add_path(path);
CHECK(proc.polygon_.size() == 0);
}
SECTION("empty outer ring")
{
fake_path path = {};
path.vertices_.emplace_back(0, 0, mapnik::SEG_CLOSE);
path.rewind(0);
mapnik::geometry::polygon_vertex_processor<double> proc;
proc.add_path(path);
REQUIRE(proc.polygon_.size() == 1);
REQUIRE(proc.polygon_.front().size() == 0);
}
SECTION("empty inner ring")
{
fake_path path = {};
path.vertices_.emplace_back(-1, -1, mapnik::SEG_MOVETO);
path.vertices_.emplace_back(1, -1, mapnik::SEG_LINETO);
path.vertices_.emplace_back(1, 1, mapnik::SEG_LINETO);
path.vertices_.emplace_back(-1, 1, mapnik::SEG_LINETO);
path.vertices_.emplace_back(0, 0, mapnik::SEG_CLOSE);
path.vertices_.emplace_back(0, 0, mapnik::SEG_CLOSE);
path.rewind(0);
mapnik::geometry::polygon_vertex_processor<double> proc;
proc.add_path(path);
REQUIRE(proc.polygon_.size() == 2);
auto const& outer_ring = proc.polygon_.front();
REQUIRE(outer_ring.size() == 5);
CHECK(outer_ring[0].x == Approx(-1));
CHECK(outer_ring[0].y == Approx(-1));
CHECK(outer_ring[1].x == Approx(1));
CHECK(outer_ring[1].y == Approx(-1));
CHECK(outer_ring[2].x == Approx(1));
CHECK(outer_ring[2].y == Approx(1));
CHECK(outer_ring[3].x == Approx(-1));
CHECK(outer_ring[3].y == Approx(1));
CHECK(outer_ring[4].x == Approx(-1));
CHECK(outer_ring[4].y == Approx(-1));
}
}
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