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#include "catch.hpp"
#include <boost/version.hpp>
#include <mapnik/geometry.hpp>
#include <mapnik/geometry/is_simple.hpp>
TEST_CASE("geometry is_simple")
{
// only Boost >= 1.58 has the required is_valid function version
#if BOOST_VERSION >= 105800
SECTION("point")
{
mapnik::geometry::geometry_empty empty;
CHECK(mapnik::geometry::is_simple(empty));
}
SECTION("point")
{
mapnik::geometry::point<double> pt(0, 0);
CHECK(mapnik::geometry::is_simple(pt));
}
SECTION("point uninitialized")
{
mapnik::geometry::point<double> pt2;
CHECK(mapnik::geometry::is_simple(pt2));
}
SECTION("point -- geometry object")
{
mapnik::geometry::point<double> pt(0, 0);
mapnik::geometry::geometry<double> geom(pt);
CHECK(mapnik::geometry::is_simple(geom));
}
// This is funky that boost geometry is_simple does not check for NAN when dealing with a point
// this test is here in case the logic ever changes
// Bug report on this: https://svn.boost.org/trac/boost/ticket/11711
SECTION("point NaN")
{
mapnik::geometry::point<double> pt(std::numeric_limits<double>::quiet_NaN(),
std::numeric_limits<double>::quiet_NaN());
CHECK(std::isnan(pt.x));
CHECK(std::isnan(pt.y));
CHECK(mapnik::geometry::is_simple(pt));
}
// This is funky that boost geometry is_simple does not check for infinity when dealing with a point
// this test is here in case the logic ever changes
// Bug report on this: https://svn.boost.org/trac/boost/ticket/11711
SECTION("point Infinity")
{
mapnik::geometry::point<double> pt(std::numeric_limits<double>::infinity(),
std::numeric_limits<double>::infinity());
CHECK(std::isinf(pt.x));
CHECK(std::isinf(pt.y));
CHECK(mapnik::geometry::is_simple(pt));
}
SECTION("multi point")
{
mapnik::geometry::multi_point<double> mpt;
mpt.emplace_back(0, 0);
mpt.emplace_back(1, 1);
CHECK(mapnik::geometry::is_simple(mpt));
}
SECTION("multi point empty")
{
mapnik::geometry::multi_point<double> mpt;
CHECK(mapnik::geometry::is_simple(mpt));
}
SECTION("line_string")
{
mapnik::geometry::line_string<double> line;
line.emplace_back(0, 0);
line.emplace_back(1, 1);
CHECK(mapnik::geometry::is_simple(line));
}
// This fails while is_valid will not fail!
SECTION("line_string repeated points")
{
mapnik::geometry::line_string<double> line;
line.emplace_back(0, 0);
line.emplace_back(1, 1);
line.emplace_back(1, 1);
line.emplace_back(2, 2);
CHECK(!mapnik::geometry::is_simple(line));
}
SECTION("line_string empty")
{
mapnik::geometry::line_string<double> line;
CHECK(mapnik::geometry::is_simple(line));
}
SECTION("multi_line_string")
{
mapnik::geometry::line_string<double> line1;
line1.emplace_back(0, 0);
line1.emplace_back(1, 1);
mapnik::geometry::line_string<double> line2;
line2.emplace_back(0, 1);
line2.emplace_back(1, 2);
mapnik::geometry::multi_line_string<double> lines;
lines.emplace_back(line1);
lines.emplace_back(line2);
CHECK(mapnik::geometry::is_simple(lines));
}
SECTION("multi_line_string empty")
{
mapnik::geometry::multi_line_string<double> lines;
CHECK(mapnik::geometry::is_simple(lines));
}
SECTION("multi_line_string empty")
{
mapnik::geometry::multi_line_string<double> lines;
mapnik::geometry::line_string<double> line;
lines.emplace_back(line);
CHECK(mapnik::geometry::is_simple(lines));
}
SECTION("polygon")
{
mapnik::geometry::polygon<double> poly;
mapnik::geometry::linear_ring<double> ring;
ring.emplace_back(0, 0);
ring.emplace_back(1, 0);
ring.emplace_back(1, 1);
ring.emplace_back(0, 1);
ring.emplace_back(0, 0);
poly.push_back(std::move(ring));
CHECK(mapnik::geometry::is_simple(poly));
}
SECTION("polygon invalid winding order")
{
mapnik::geometry::polygon<double> poly;
mapnik::geometry::linear_ring<double> ring;
ring.emplace_back(0, 0);
ring.emplace_back(0, 1);
ring.emplace_back(1, 1);
ring.emplace_back(1, 0);
ring.emplace_back(0, 0);
poly.push_back(std::move(ring));
CHECK(mapnik::geometry::is_simple(poly));
}
// repeated points are not considered invalid in a polygon
// but they are considered not simple
SECTION("polygon 2 repeated points")
{
mapnik::geometry::polygon<double> poly;
mapnik::geometry::linear_ring<double> ring;
ring.emplace_back(0, 0);
ring.emplace_back(1, 0);
ring.emplace_back(1, 1);
ring.emplace_back(1, 1);
ring.emplace_back(0, 1);
ring.emplace_back(0, 0);
poly.push_back(std::move(ring));
CHECK(!mapnik::geometry::is_simple(poly));
}
// repeated points are not considered invalid in a polygon
// but they are considered not simple
SECTION("polygon 3 repeated points")
{
mapnik::geometry::polygon<double> poly;
mapnik::geometry::linear_ring<double> ring;
ring.emplace_back(0, 0);
ring.emplace_back(1, 0);
ring.emplace_back(1, 1);
ring.emplace_back(1, 1);
ring.emplace_back(1, 1);
ring.emplace_back(0, 1);
ring.emplace_back(0, 0);
poly.push_back(std::move(ring));
CHECK(!mapnik::geometry::is_simple(poly));
}
#if BOOST_VERSION >= 106000
SECTION("polygon that is empty")
{
mapnik::geometry::polygon<double> poly;
poly.emplace_back();
CHECK(!mapnik::geometry::is_simple(poly));
}
SECTION("polygon that has empty exterior ring")
{
mapnik::geometry::polygon<double> poly;
mapnik::geometry::linear_ring<double> ring;
poly.push_back(std::move(ring));
CHECK(!mapnik::geometry::is_simple(poly));
}
SECTION("polygon that has empty interior ring")
{
mapnik::geometry::polygon<double> poly;
mapnik::geometry::linear_ring<double> ring;
ring.emplace_back(0, 0);
ring.emplace_back(1, 0);
ring.emplace_back(1, 1);
ring.emplace_back(0, 1);
ring.emplace_back(0, 0);
poly.push_back(std::move(ring));
mapnik::geometry::linear_ring<double> ring2;
poly.push_back(std::move(ring2));
CHECK(!mapnik::geometry::is_simple(poly));
}
#else // BOOST_VERSION >= 1.60
SECTION("polygon that is empty")
{
mapnik::geometry::polygon<double> poly;
CHECK(mapnik::geometry::is_simple(poly));
}
SECTION("polygon that has empty exterior ring")
{
mapnik::geometry::polygon<double> poly;
mapnik::geometry::linear_ring<double> ring;
poly.push_back(std::move(ring));
CHECK(mapnik::geometry::is_simple(poly));
}
SECTION("polygon that has empty interior ring")
{
mapnik::geometry::polygon<double> poly;
mapnik::geometry::linear_ring<double> ring;
ring.emplace_back(0, 0);
ring.emplace_back(1, 0);
ring.emplace_back(1, 1);
ring.emplace_back(0, 1);
ring.emplace_back(0, 0);
poly.push_back(std::move(ring));
mapnik::geometry::linear_ring<double> ring2;
poly.push_back(std::move(ring2));
CHECK(mapnik::geometry::is_simple(poly));
}
#endif // BOOST_VERSION >= 1.60
// A polygon with a spike can still be simple
SECTION("polygon with spike")
{
mapnik::geometry::polygon<double> poly;
mapnik::geometry::linear_ring<double> ring;
ring.emplace_back(0, 0);
ring.emplace_back(1, 0);
ring.emplace_back(1, 1);
ring.emplace_back(2, 2);
ring.emplace_back(1, 1);
ring.emplace_back(0, 1);
ring.emplace_back(0, 0);
poly.push_back(std::move(ring));
CHECK(mapnik::geometry::is_simple(poly));
}
SECTION("polygon with hole")
{
mapnik::geometry::polygon<double> poly;
mapnik::geometry::linear_ring<double> ring;
ring.emplace_back(0, 0);
ring.emplace_back(3, 0);
ring.emplace_back(3, 3);
ring.emplace_back(0, 3);
ring.emplace_back(0, 0);
poly.push_back(std::move(ring));
mapnik::geometry::linear_ring<double> hole;
hole.emplace_back(1, 1);
hole.emplace_back(1, 2);
hole.emplace_back(2, 2);
hole.emplace_back(2, 1);
hole.emplace_back(1, 1);
poly.push_back(std::move(hole));
CHECK(mapnik::geometry::is_simple(poly));
}
// Polygons with reversed winding order still can be considered simple
SECTION("polygon with hole with invalid winding order")
{
mapnik::geometry::polygon<double> poly;
mapnik::geometry::linear_ring<double> ring;
ring.emplace_back(0, 0);
ring.emplace_back(3, 0);
ring.emplace_back(3, 3);
ring.emplace_back(0, 3);
ring.emplace_back(0, 0);
poly.push_back(std::move(ring));
mapnik::geometry::linear_ring<double> hole;
hole.emplace_back(1, 1);
hole.emplace_back(2, 1);
hole.emplace_back(2, 2);
hole.emplace_back(1, 2);
hole.emplace_back(1, 1);
poly.push_back(std::move(hole));
CHECK(mapnik::geometry::is_simple(poly));
}
SECTION("multi polygon")
{
mapnik::geometry::multi_polygon<double> mp;
mapnik::geometry::polygon<double> poly;
mapnik::geometry::linear_ring<double> ring;
ring.emplace_back(0, 0);
ring.emplace_back(1, 0);
ring.emplace_back(1, 1);
ring.emplace_back(0, 1);
ring.emplace_back(0, 0);
poly.push_back(std::move(ring));
mapnik::geometry::polygon<double> poly2;
mapnik::geometry::linear_ring<double> ring2;
ring2.emplace_back(0, 0);
ring2.emplace_back(-1, 0);
ring2.emplace_back(-1, -1);
ring2.emplace_back(0, -1);
ring2.emplace_back(0, 0);
poly2.push_back(std::move(ring2));
mp.emplace_back(poly);
mp.emplace_back(poly2);
CHECK(mapnik::geometry::is_simple(mp));
}
SECTION("multi polygon with hole")
{
mapnik::geometry::multi_polygon<double> mp;
mapnik::geometry::polygon<double> poly;
mapnik::geometry::linear_ring<double> ring;
ring.emplace_back(0, 0);
ring.emplace_back(3, 0);
ring.emplace_back(3, 3);
ring.emplace_back(0, 3);
ring.emplace_back(0, 0);
poly.push_back(std::move(ring));
mapnik::geometry::linear_ring<double> hole;
hole.emplace_back(1, 1);
hole.emplace_back(1, 2);
hole.emplace_back(2, 2);
hole.emplace_back(2, 1);
hole.emplace_back(1, 1);
poly.push_back(std::move(hole));
mapnik::geometry::polygon<double> poly2;
mapnik::geometry::linear_ring<double> ring2;
ring2.emplace_back(0, 0);
ring2.emplace_back(-3, 0);
ring2.emplace_back(-3, -3);
ring2.emplace_back(0, -3);
ring2.emplace_back(0, 0);
poly2.push_back(std::move(ring2));
mapnik::geometry::linear_ring<double> hole2;
hole2.emplace_back(-1, -1);
hole2.emplace_back(-1, -2);
hole2.emplace_back(-2, -2);
hole2.emplace_back(-2, -1);
hole2.emplace_back(-1, -1);
poly2.push_back(std::move(hole2));
mp.emplace_back(poly);
mp.emplace_back(poly2);
CHECK(mapnik::geometry::is_simple(mp));
}
SECTION("multi polygon empty")
{
mapnik::geometry::multi_polygon<double> mp;
CHECK(mapnik::geometry::is_simple(mp));
}
#else // BOOST_VERSION >= 1.58
SECTION("skipped is_simple tests")
{
WARN("geometry simple tests disabled due to boost version older that 1.58 used");
}
#endif
}
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