546 lines
19 KiB
C++
546 lines
19 KiB
C++
#include "bench_framework.hpp"
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#include "compare_images.hpp"
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#include <mapnik/vertex.hpp>
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#include <mapnik/transform_path_adapter.hpp>
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#include <mapnik/view_transform.hpp>
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#include <mapnik/wkt/wkt_factory.hpp>
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#include <mapnik/projection.hpp>
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#include <mapnik/proj_transform.hpp>
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#include <mapnik/util/fs.hpp>
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#include <mapnik/geometry.hpp>
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#include <mapnik/vertex_adapters.hpp>
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#include <mapnik/geometry.hpp>
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#include <mapnik/geometry_adapters.hpp>
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#include <mapnik/geometry_envelope.hpp>
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#include <mapnik/geometry_correct.hpp>
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#include <mapnik/geometry_is_empty.hpp>
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#include <mapnik/image_util.hpp>
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#include <mapnik/color.hpp>
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// boost geometry
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#include <boost/geometry.hpp>
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// agg
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#include "agg_conv_clip_polygon.h"
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// clipper
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#include "agg_path_storage.h"
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// rendering
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#include "agg_basics.h"
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#include "agg_rendering_buffer.h"
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#include "agg_pixfmt_rgba.h"
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#include "agg_rasterizer_scanline_aa.h"
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#include "agg_scanline_u.h"
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#include "agg_renderer_scanline.h"
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// stl
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#include <fstream>
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#include <iostream>
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#include <cstdlib>
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void render(mapnik::geometry::multi_polygon<double> const& geom,
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mapnik::box2d<double> const& extent,
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std::string const& name)
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{
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using path_type = mapnik::transform_path_adapter<mapnik::view_transform,mapnik::geometry::polygon_vertex_adapter<double>>;
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using ren_base = agg::renderer_base<agg::pixfmt_rgba32_plain>;
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using renderer = agg::renderer_scanline_aa_solid<ren_base>;
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mapnik::image_rgba8 im(256,256);
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mapnik::fill(im, mapnik::color("white"));
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mapnik::box2d<double> padded_extent(155,134,665,466);//extent;
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padded_extent.pad(10);
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mapnik::view_transform tr(im.width(),im.height(),padded_extent,0,0);
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agg::rendering_buffer buf(im.bytes(),im.width(),im.height(), im.row_size());
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agg::pixfmt_rgba32_plain pixf(buf);
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ren_base renb(pixf);
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renderer ren(renb);
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mapnik::proj_transform prj_trans(mapnik::projection("+init=epsg:4326"),mapnik::projection("+init=epsg:4326"));
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ren.color(agg::rgba8(127,127,127,255));
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agg::rasterizer_scanline_aa<> ras;
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for (auto const& poly : geom)
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{
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mapnik::geometry::polygon_vertex_adapter<double> va(poly);
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path_type path(tr,va,prj_trans);
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ras.add_path(path);
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}
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agg::scanline_u8 sl;
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agg::render_scanlines(ras, sl, ren);
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mapnik::save_to_file(im,name);
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}
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class test1 : public benchmark::test_case
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{
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std::string wkt_in_;
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mapnik::box2d<double> extent_;
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std::string expected_;
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public:
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using conv_clip = agg::conv_clip_polygon<mapnik::geometry::polygon_vertex_adapter<double>>;
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test1(mapnik::parameters const& params,
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std::string const& wkt_in,
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mapnik::box2d<double> const& extent)
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: test_case(params),
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wkt_in_(wkt_in),
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extent_(extent),
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expected_("./benchmark/data/polygon_clipping_agg") {}
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bool validate() const
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{
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mapnik::geometry::geometry<double> geom;
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if (!mapnik::from_wkt(wkt_in_, geom))
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{
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throw std::runtime_error("Failed to parse WKT");
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}
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if (mapnik::geometry::is_empty(geom))
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{
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std::clog << "empty geom!\n";
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return false;
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}
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if (!geom.is<mapnik::geometry::polygon<double>>())
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{
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std::clog << "not a polygon!\n";
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return false;
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}
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mapnik::geometry::polygon<double> const& poly = mapnik::util::get<mapnik::geometry::polygon<double>>(geom);
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mapnik::geometry::polygon_vertex_adapter<double> va(poly);
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conv_clip clipped(va);
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clipped.clip_box(
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extent_.minx(),
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extent_.miny(),
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extent_.maxx(),
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extent_.maxy());
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clipped.rewind(0);
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mapnik::geometry::polygon<double> poly2;
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mapnik::geometry::linear_ring<double> ring;
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// exterior ring
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unsigned cmd;
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double x, y, x0, y0;
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while ((cmd = clipped.vertex(&x, &y)) != mapnik::SEG_END)
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{
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if (cmd == mapnik::SEG_MOVETO)
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{
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x0 = x; y0 = y;
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}
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if (cmd == mapnik::SEG_CLOSE)
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{
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ring.add_coord(x0, y0);
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break;
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}
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ring.add_coord(x,y);
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}
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poly2.set_exterior_ring(std::move(ring));
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// interior rings
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ring.clear();
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while ((cmd = clipped.vertex(&x, &y)) != mapnik::SEG_END)
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{
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if (cmd == mapnik::SEG_MOVETO)
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{
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x0 = x; y0 = y;
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}
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else if (cmd == mapnik::SEG_CLOSE)
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{
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ring.add_coord(x0,y0);
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poly2.add_hole(std::move(ring));
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ring.clear();
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continue;
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}
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ring.add_coord(x,y);
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}
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std::string expect = expected_+".png";
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std::string actual = expected_+"_actual.png";
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mapnik::geometry::multi_polygon<double> mp;
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mp.emplace_back(poly2);
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auto env = mapnik::geometry::envelope(mp);
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if (!mapnik::util::exists(expect) || (std::getenv("UPDATE") != nullptr))
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{
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std::clog << "generating expected image: " << expect << "\n";
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render(mp,env,expect);
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}
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render(mp,env,actual);
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return benchmark::compare_images(actual,expect);
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}
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bool operator()() const
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{
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mapnik::geometry::geometry<double> geom;
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if (!mapnik::from_wkt(wkt_in_, geom))
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{
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throw std::runtime_error("Failed to parse WKT");
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}
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if (mapnik::geometry::is_empty(geom))
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{
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std::clog << "empty geom!\n";
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return false;
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}
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if (!geom.is<mapnik::geometry::polygon<double>>())
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{
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std::clog << "not a polygon!\n";
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return false;
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}
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bool valid = true;
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for (unsigned i=0;i<iterations_;++i)
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{
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unsigned count = 0;
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mapnik::geometry::polygon<double> const& poly = mapnik::util::get<mapnik::geometry::polygon<double>>(geom);
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mapnik::geometry::polygon_vertex_adapter<double> va(poly);
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conv_clip clipped(va);
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clipped.clip_box(
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extent_.minx(),
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extent_.miny(),
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extent_.maxx(),
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extent_.maxy());
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unsigned cmd;
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double x,y;
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// NOTE: this rewind is critical otherwise
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// agg_conv_adapter_vpgen will give garbage
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// values for the first vertex
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clipped.rewind(0);
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while ((cmd = clipped.vertex(&x, &y)) != mapnik::SEG_END) {
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count++;
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}
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unsigned expected_count = 30;
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if (count != expected_count) {
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std::clog << "test1: clipping failed: processed " << count << " verticies but expected " << expected_count << "\n";
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valid = false;
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}
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}
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return valid;
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}
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};
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class test3 : public benchmark::test_case
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{
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std::string wkt_in_;
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mapnik::box2d<double> extent_;
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std::string expected_;
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public:
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test3(mapnik::parameters const& params,
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std::string const& wkt_in,
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mapnik::box2d<double> const& extent)
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: test_case(params),
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wkt_in_(wkt_in),
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extent_(extent),
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expected_("./benchmark/data/polygon_clipping_boost") {}
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bool validate() const
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{
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mapnik::geometry::geometry<double> geom;
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if (!mapnik::from_wkt(wkt_in_, geom))
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{
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throw std::runtime_error("Failed to parse WKT");
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}
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if (mapnik::geometry::is_empty(geom))
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{
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std::clog << "empty geom!\n";
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return false;
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}
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if (!geom.is<mapnik::geometry::polygon<double> >())
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{
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std::clog << "not a polygon!\n";
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return false;
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}
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mapnik::geometry::polygon<double> & poly = mapnik::util::get<mapnik::geometry::polygon<double> >(geom);
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mapnik::geometry::correct(poly);
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mapnik::geometry::linear_ring<double> bbox;
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bbox.add_coord(extent_.minx(), extent_.miny());
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bbox.add_coord(extent_.minx(), extent_.maxy());
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bbox.add_coord(extent_.maxx(), extent_.maxy());
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bbox.add_coord(extent_.maxx(), extent_.miny());
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bbox.add_coord(extent_.minx(), extent_.miny());
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std::deque<mapnik::geometry::polygon<double> > result;
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boost::geometry::intersection(bbox, poly, result);
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std::string expect = expected_+".png";
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std::string actual = expected_+"_actual.png";
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mapnik::geometry::multi_polygon<double> mp;
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for (auto const& _geom: result)
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{
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//std::clog << boost::geometry::dsv(geom) << "\n";
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mp.emplace_back(_geom);
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}
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mapnik::geometry::geometry<double> geom2(mp);
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auto env = mapnik::geometry::envelope(geom2);
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if (!mapnik::util::exists(expect) || (std::getenv("UPDATE") != nullptr))
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{
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std::clog << "generating expected image: " << expect << "\n";
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render(mp,env,expect);
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}
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render(mp,env,actual);
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return benchmark::compare_images(actual,expect);
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}
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bool operator()() const
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{
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mapnik::geometry::geometry<double> geom;
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if (!mapnik::from_wkt(wkt_in_, geom))
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{
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throw std::runtime_error("Failed to parse WKT");
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}
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if (mapnik::geometry::is_empty(geom))
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{
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std::clog << "empty geom!\n";
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return false;
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}
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if (!geom.is<mapnik::geometry::polygon<double> >())
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{
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std::clog << "not a polygon!\n";
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return false;
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}
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mapnik::geometry::polygon<double> & poly = mapnik::util::get<mapnik::geometry::polygon<double> >(geom);
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mapnik::geometry::correct(poly);
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mapnik::geometry::linear_ring<double> bbox;
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bbox.add_coord(extent_.minx(), extent_.miny());
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bbox.add_coord(extent_.minx(), extent_.maxy());
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bbox.add_coord(extent_.maxx(), extent_.maxy());
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bbox.add_coord(extent_.maxx(), extent_.miny());
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bbox.add_coord(extent_.minx(), extent_.miny());
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bool valid = true;
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for (unsigned i=0;i<iterations_;++i)
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{
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std::deque<mapnik::geometry::polygon<double> > result;
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boost::geometry::intersection(bbox, poly, result);
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unsigned count = 0;
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for (auto const& _geom : result)
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{
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mapnik::geometry::polygon_vertex_adapter<double> va(_geom);
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unsigned cmd;
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double x,y;
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while ((cmd = va.vertex(&x, &y)) != mapnik::SEG_END) {
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++count;
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}
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unsigned expected_count = 29;
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if (count != expected_count) {
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std::clog << "test3: clipping failed: processed " << count << " verticies but expected " << expected_count << "\n";
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valid = false;
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}
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}
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}
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return valid;
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}
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};
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/*
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Commented out section because clipper moved out of mapnik core.
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inline void process_polynode_branch(ClipperLib::PolyNode* polynode,
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mapnik::geometry::multi_polygon<double> & mp)
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{
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mapnik::geometry::polygon<double> polygon;
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mapnik::geometry::linear_ring<double> outer;
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for (auto const& pt : polynode->Contour)
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{
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outer.emplace_back(static_cast<double>(pt.x),static_cast<double>(pt.y));
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}
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if (outer.front() != outer.back())
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{
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outer.emplace_back(outer.front().x, outer.front().y);
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}
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polygon.set_exterior_ring(std::move(outer));
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for (auto * ring : polynode->Childs)
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{
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mapnik::geometry::linear_ring<double> inner;
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for (auto const& pt : ring->Contour)
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{
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inner.emplace_back(static_cast<double>(pt.x),static_cast<double>(pt.y));
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}
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if (inner.front() != inner.back())
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{
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inner.emplace_back(inner.front().x, inner.front().y);
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}
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polygon.add_hole(std::move(inner));
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}
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mp.emplace_back(std::move(polygon));
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for (auto * ring : polynode->Childs)
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{
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for (auto * sub_ring : ring->Childs)
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{
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process_polynode_branch(sub_ring, mp);
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}
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}
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}
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class test4 : public benchmark::test_case
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{
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std::string wkt_in_;
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mapnik::box2d<double> extent_;
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std::string expected_;
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public:
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test4(mapnik::parameters const& params,
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std::string const& wkt_in,
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mapnik::box2d<double> const& extent)
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: test_case(params),
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wkt_in_(wkt_in),
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extent_(extent),
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expected_("./benchmark/data/polygon_clipping_clipper") {}
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bool validate() const
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{
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mapnik::geometry::geometry<double> geom;
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if (!mapnik::from_wkt(wkt_in_, geom))
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{
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throw std::runtime_error("Failed to parse WKT");
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}
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if (mapnik::geometry::is_empty(geom))
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{
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std::clog << "empty geom!\n";
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return false;
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}
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if (!geom.is<mapnik::geometry::polygon<double> >())
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{
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std::clog << "not a polygon!\n";
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return false;
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}
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mapnik::geometry::polygon<double> & poly = mapnik::util::get<mapnik::geometry::polygon<double> >(geom);
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mapnik::geometry::correct(poly);
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ClipperLib::Clipper clipper;
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mapnik::geometry::line_string<std::int64_t> path;
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for (auto const& pt : poly.exterior_ring)
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{
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double x = pt.x;
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double y = pt.y;
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path.emplace_back(static_cast<ClipperLib::cInt>(x),static_cast<ClipperLib::cInt>(y));
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}
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double area = ClipperLib::Area(path);
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if (area > 0)
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{
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std::reverse(path.begin(), path.end());
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}
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if (!clipper.AddPath(path, ClipperLib::ptSubject, true))
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{
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std::clog << "ptSubject ext failed!\n";
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}
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for (auto const& ring : poly.interior_rings)
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{
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path.clear();
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for (auto const& pt : ring)
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{
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double x = pt.x;
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double y = pt.y;
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path.emplace_back(static_cast<ClipperLib::cInt>(x),static_cast<ClipperLib::cInt>(y));
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}
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area = ClipperLib::Area(path);
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if (area < 0)
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{
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std::reverse(path.begin(), path.end());
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}
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if (!clipper.AddPath(path, ClipperLib::ptSubject, true))
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{
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std::clog << "ptSubject ext failed!\n";
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}
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}
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std::cerr << "path size=" << path.size() << std::endl;
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mapnik::geometry::line_string<std::int64_t> clip_box;
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clip_box.emplace_back(static_cast<ClipperLib::cInt>(extent_.minx()),static_cast<ClipperLib::cInt>(extent_.miny()));
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clip_box.emplace_back(static_cast<ClipperLib::cInt>(extent_.maxx()),static_cast<ClipperLib::cInt>(extent_.miny()));
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clip_box.emplace_back(static_cast<ClipperLib::cInt>(extent_.maxx()),static_cast<ClipperLib::cInt>(extent_.maxy()));
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clip_box.emplace_back(static_cast<ClipperLib::cInt>(extent_.minx()),static_cast<ClipperLib::cInt>(extent_.maxy()));
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clip_box.emplace_back(static_cast<ClipperLib::cInt>(extent_.minx()),static_cast<ClipperLib::cInt>(extent_.miny()));
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if (!clipper.AddPath( clip_box, ClipperLib::ptClip, true ))
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{
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std::clog << "ptClip failed!\n";
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}
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ClipperLib::PolyTree polygons;
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clipper.Execute(ClipperLib::ctIntersection, polygons);// ClipperLib::pftNonZero);
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clipper.Clear();
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mapnik::geometry::multi_polygon<double> mp;
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for (auto * polynode : polygons.Childs)
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{
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process_polynode_branch(polynode, mp);
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}
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std::string expect = expected_+".png";
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std::string actual = expected_+"_actual.png";
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//mapnik::geometry::geometry<double> geom2(mp);
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auto env = mapnik::geometry::envelope(mp);
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if (!mapnik::util::exists(expect) || (std::getenv("UPDATE") != nullptr))
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{
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std::clog << "generating expected image: " << expect << "\n";
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render(mp,env,expect);
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}
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render(mp,env,actual);
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return benchmark::compare_images(actual,expect);
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}
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bool operator()() const
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{
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mapnik::geometry::geometry<double> geom;
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if (!mapnik::from_wkt(wkt_in_, geom))
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{
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throw std::runtime_error("Failed to parse WKT");
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}
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if (mapnik::geometry::is_empty(geom))
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{
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std::clog << "empty geom!\n";
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return false;
|
|
}
|
|
if (!geom.is<mapnik::geometry::polygon<double> >())
|
|
{
|
|
std::clog << "not a polygon!\n";
|
|
return false;
|
|
}
|
|
mapnik::geometry::polygon<double> & poly = mapnik::util::get<mapnik::geometry::polygon<double> >(geom);
|
|
mapnik::geometry::correct(poly);
|
|
|
|
bool valid = true;
|
|
for (unsigned i=0;i<iterations_;++i)
|
|
{
|
|
std::deque<mapnik::geometry::polygon<double> > result;
|
|
boost::geometry::intersection(extent_,poly,result);
|
|
|
|
unsigned count = 0;
|
|
for (auto const& geom : result)
|
|
{
|
|
mapnik::geometry::polygon_vertex_adapter<double> va(geom);
|
|
unsigned cmd;
|
|
double x,y;
|
|
while ((cmd = va.vertex(&x, &y)) != mapnik::SEG_END) {
|
|
++count;
|
|
}
|
|
unsigned expected_count = 29;
|
|
if (count != expected_count) {
|
|
std::clog << "test3: clipping failed: processed " << count << " verticies but expected " << expected_count << "\n";
|
|
valid = false;
|
|
}
|
|
}
|
|
}
|
|
return valid;
|
|
}
|
|
};
|
|
*/
|
|
|
|
int main(int argc, char** argv)
|
|
{
|
|
mapnik::parameters params;
|
|
benchmark::handle_args(argc,argv,params);
|
|
|
|
// polygon/rect clipping
|
|
// IN : POLYGON ((155 203, 233 454, 315 340, 421 446, 463 324, 559 466, 665 253, 528 178, 394 229, 329 138, 212 134, 183 228, 200 264, 155 203),(313 190, 440 256, 470 248, 510 305, 533 237, 613 263, 553 397, 455 262, 405 378, 343 287, 249 334, 229 191, 313 190))
|
|
// RECT : POLYGON ((181 106, 181 470, 631 470, 631 106, 181 106))
|
|
// OUT (expected)
|
|
// POLYGON ((181 286.6666666666667, 233 454, 315 340, 421 446, 463 324, 559 466, 631 321.3207547169811, 631 234.38686131386862, 528 178, 394 229, 329 138, 212 134, 183 228, 200 264, 181 238.24444444444444, 181 286.6666666666667),(313 190, 440 256, 470 248, 510 305, 533 237, 613 263, 553 397, 455 262, 405 378, 343 287, 249 334, 229 191, 313 190))
|
|
|
|
mapnik::box2d<double> clipping_box(181,106,631,470);
|
|
std::string filename_("./benchmark/data/polygon.wkt");
|
|
std::ifstream in(filename_.c_str(),std::ios_base::in | std::ios_base::binary);
|
|
if (!in.is_open())
|
|
throw std::runtime_error("could not open: '" + filename_ + "'");
|
|
std::string wkt_in( (std::istreambuf_iterator<char>(in) ),
|
|
(std::istreambuf_iterator<char>()) );
|
|
{
|
|
test1 test_runner(params,wkt_in,clipping_box);
|
|
run(test_runner,"clipping polygon with agg");
|
|
}
|
|
{
|
|
test3 test_runner(params,wkt_in,clipping_box);
|
|
run(test_runner,"clipping polygon with boost");
|
|
}
|
|
/*
|
|
{
|
|
test4 test_runner(params,wkt_in,clipping_box);
|
|
run(test_runner,"clipping polygon with clipper_tree");
|
|
}
|
|
*/
|
|
return 0;
|
|
}
|