337 lines
8.2 KiB
C++
337 lines
8.2 KiB
C++
#include "catch.hpp"
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#include <mapnik/vertex_adapters.hpp>
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#include <mapnik/geometry/correct.hpp>
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TEST_CASE("vertex_adapters") {
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SECTION("polygon") {
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mapnik::geometry::polygon<double> g;
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g.emplace_back();
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g.back().emplace_back(1,1);
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g.back().emplace_back(2,2);
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g.back().emplace_back(100,100);
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g.back().emplace_back(1,1);
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mapnik::geometry::polygon_vertex_adapter<double> va(g);
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double x,y;
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unsigned cmd;
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cmd = va.vertex(&x,&y);
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REQUIRE( cmd == mapnik::SEG_MOVETO );
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REQUIRE( x == 1 );
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REQUIRE( y == 1 );
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cmd = va.vertex(&x,&y);
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REQUIRE( cmd == mapnik::SEG_LINETO );
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REQUIRE( x == 2 );
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REQUIRE( y == 2 );
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cmd = va.vertex(&x,&y);
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REQUIRE( cmd == mapnik::SEG_LINETO );
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REQUIRE( x == 100 );
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REQUIRE( y == 100 );
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// close
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cmd = va.vertex(&x,&y);
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REQUIRE( cmd == mapnik::SEG_CLOSE );
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REQUIRE( x == 0 );
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REQUIRE( y == 0 );
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// end
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cmd = va.vertex(&x,&y);
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REQUIRE( cmd == mapnik::SEG_END );
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REQUIRE( x == 0 );
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REQUIRE( y == 0 );
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}
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SECTION("polygon with hole") {
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mapnik::geometry::polygon<double> g;
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g.emplace_back();
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g.back().emplace_back(0,0);
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g.back().emplace_back(-10,0);
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g.back().emplace_back(-10,10);
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g.back().emplace_back(0,10);
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g.back().emplace_back(0,0);
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std::vector<mapnik::geometry::linear_ring<double> > interior_rings;
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mapnik::geometry::linear_ring<double> hole;
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hole.emplace_back(-7,7);
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hole.emplace_back(-7,3);
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hole.emplace_back(-3,3);
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hole.emplace_back(-3,7);
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hole.emplace_back(-7,7);
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g.push_back(std::move(hole));
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mapnik::geometry::linear_ring<double> hole_in_hole;
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hole_in_hole.emplace_back(-6,4);
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hole_in_hole.emplace_back(-6,6);
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hole_in_hole.emplace_back(-4,6);
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hole_in_hole.emplace_back(-4,4);
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hole_in_hole.emplace_back(-6,4);
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g.push_back(std::move(hole_in_hole));
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mapnik::geometry::polygon_vertex_adapter<double> va(g);
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double x,y;
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unsigned cmd;
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// exterior ring
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cmd = va.vertex(&x,&y);
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REQUIRE( cmd == mapnik::SEG_MOVETO );
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REQUIRE( x == 0 );
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REQUIRE( y == 0 );
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cmd = va.vertex(&x,&y);
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REQUIRE( cmd == mapnik::SEG_LINETO );
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REQUIRE( x == -10 );
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REQUIRE( y == 0 );
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cmd = va.vertex(&x,&y);
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REQUIRE( cmd == mapnik::SEG_LINETO );
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REQUIRE( x == -10 );
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REQUIRE( y == 10 );
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cmd = va.vertex(&x,&y);
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REQUIRE( cmd == mapnik::SEG_LINETO );
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REQUIRE( x == 0 );
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REQUIRE( y == 10 );
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cmd = va.vertex(&x,&y);
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REQUIRE( cmd == mapnik::SEG_CLOSE );
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REQUIRE( x == 0 );
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REQUIRE( y == 0 );
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// exterior ring via ring_vertex_adapter
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mapnik::geometry::ring_vertex_adapter<double> va2(g.front());
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cmd = va2.vertex(&x,&y);
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REQUIRE( cmd == mapnik::SEG_MOVETO );
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REQUIRE( x == 0 );
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REQUIRE( y == 0 );
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cmd = va2.vertex(&x,&y);
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REQUIRE( cmd == mapnik::SEG_LINETO );
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REQUIRE( x == -10 );
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REQUIRE( y == 0 );
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cmd = va2.vertex(&x,&y);
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REQUIRE( cmd == mapnik::SEG_LINETO );
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REQUIRE( x == -10 );
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REQUIRE( y == 10 );
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cmd = va2.vertex(&x,&y);
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REQUIRE( cmd == mapnik::SEG_LINETO );
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REQUIRE( x == 0 );
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REQUIRE( y == 10 );
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cmd = va2.vertex(&x,&y);
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REQUIRE( cmd == mapnik::SEG_CLOSE );
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REQUIRE( x == 0 );
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REQUIRE( y == 0 );
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// since ring adapter is only for exterior, next should be END
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cmd = va2.vertex(&x,&y);
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REQUIRE( cmd == mapnik::SEG_END );
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REQUIRE( x == 0 );
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REQUIRE( y == 0 );
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// first hole for polygon_adapter
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cmd = va.vertex(&x,&y);
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REQUIRE( cmd == mapnik::SEG_MOVETO );
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REQUIRE( x == -7 );
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REQUIRE( y == 7 );
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cmd = va.vertex(&x,&y);
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REQUIRE( cmd == mapnik::SEG_LINETO );
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REQUIRE( x == -7 );
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REQUIRE( y == 3 );
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cmd = va.vertex(&x,&y);
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REQUIRE( cmd == mapnik::SEG_LINETO );
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REQUIRE( x == -3 );
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REQUIRE( y == 3 );
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cmd = va.vertex(&x,&y);
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REQUIRE( cmd == mapnik::SEG_LINETO );
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REQUIRE( x == -3 );
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REQUIRE( y == 7 );
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cmd = va.vertex(&x,&y);
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REQUIRE( cmd == mapnik::SEG_CLOSE );
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REQUIRE( x == 0 );
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REQUIRE( y == 0 );
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// second hole
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cmd = va.vertex(&x,&y);
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REQUIRE( cmd == mapnik::SEG_MOVETO );
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REQUIRE( x == -6 );
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REQUIRE( y == 4 );
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cmd = va.vertex(&x,&y);
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REQUIRE( cmd == mapnik::SEG_LINETO );
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REQUIRE( x == -6 );
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REQUIRE( y == 6 );
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cmd = va.vertex(&x,&y);
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REQUIRE( cmd == mapnik::SEG_LINETO );
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REQUIRE( x == -4 );
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REQUIRE( y == 6 );
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cmd = va.vertex(&x,&y);
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REQUIRE( cmd == mapnik::SEG_LINETO );
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REQUIRE( x == -4 );
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REQUIRE( y == 4 );
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cmd = va.vertex(&x,&y);
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REQUIRE( cmd == mapnik::SEG_CLOSE );
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REQUIRE( x == 0 );
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REQUIRE( y == 0 );
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mapnik::geometry::correct(g);
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va.rewind(0);
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// exterior ring: flipped winding order from correct
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cmd = va.vertex(&x,&y);
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REQUIRE( cmd == mapnik::SEG_MOVETO );
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REQUIRE( x == 0 );
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REQUIRE( y == 0 );
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cmd = va.vertex(&x,&y);
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REQUIRE( cmd == mapnik::SEG_LINETO );
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REQUIRE( x == 0 );
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REQUIRE( y == 10 );
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cmd = va.vertex(&x,&y);
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REQUIRE( cmd == mapnik::SEG_LINETO );
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REQUIRE( x == -10 );
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REQUIRE( y == 10 );
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cmd = va.vertex(&x,&y);
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REQUIRE( cmd == mapnik::SEG_LINETO );
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REQUIRE( x == -10 );
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REQUIRE( y == 0 );
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cmd = va.vertex(&x,&y);
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REQUIRE( cmd == mapnik::SEG_CLOSE );
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REQUIRE( x == 0 );
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REQUIRE( y == 0 );
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// first hole: flipped winding order from correct
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cmd = va.vertex(&x,&y);
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REQUIRE( cmd == mapnik::SEG_MOVETO );
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REQUIRE( x == -7 );
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REQUIRE( y == 7 );
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cmd = va.vertex(&x,&y);
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REQUIRE( cmd == mapnik::SEG_LINETO );
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REQUIRE( x == -3 );
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REQUIRE( y == 7 );
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cmd = va.vertex(&x,&y);
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REQUIRE( cmd == mapnik::SEG_LINETO );
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REQUIRE( x == -3 );
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REQUIRE( y == 3 );
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cmd = va.vertex(&x,&y);
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REQUIRE( cmd == mapnik::SEG_LINETO );
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REQUIRE( x == -7 );
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REQUIRE( y == 3 );
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cmd = va.vertex(&x,&y);
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REQUIRE( cmd == mapnik::SEG_CLOSE );
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REQUIRE( x == 0 );
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REQUIRE( y == 0 );
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// second hole: correct appears not to have changed winding order
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cmd = va.vertex(&x,&y);
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REQUIRE( cmd == mapnik::SEG_MOVETO );
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REQUIRE( x == -6 );
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REQUIRE( y == 4 );
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cmd = va.vertex(&x,&y);
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REQUIRE( cmd == mapnik::SEG_LINETO );
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REQUIRE( x == -6 );
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REQUIRE( y == 6 );
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cmd = va.vertex(&x,&y);
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REQUIRE( cmd == mapnik::SEG_LINETO );
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REQUIRE( x == -4 );
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REQUIRE( y == 6 );
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cmd = va.vertex(&x,&y);
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REQUIRE( cmd == mapnik::SEG_LINETO );
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REQUIRE( x == -4 );
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REQUIRE( y == 4 );
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cmd = va.vertex(&x,&y);
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REQUIRE( cmd == mapnik::SEG_CLOSE );
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REQUIRE( x == 0 );
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REQUIRE( y == 0 );
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}
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SECTION("polygon with empty exterior ring") {
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mapnik::geometry::polygon<double> g;
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g.emplace_back();
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mapnik::geometry::polygon_vertex_adapter<double> va(g);
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double x = 0, y = 0;
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unsigned cmd;
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cmd = va.vertex(&x,&y);
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CHECK( cmd == mapnik::SEG_END );
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CHECK( x == Approx(0) );
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CHECK( y == Approx(0) );
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}
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SECTION("polygon with empty interior ring") {
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mapnik::geometry::polygon<double> g;
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g.emplace_back();
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g.back().emplace_back(-1, -1);
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g.back().emplace_back( 1, -1);
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g.back().emplace_back( 1, 1);
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g.back().emplace_back(-1, 1);
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g.back().emplace_back(-1, -1);
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// Emplace empty interior ring
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g.emplace_back();
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mapnik::geometry::polygon_vertex_adapter<double> va(g);
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double x,y;
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unsigned cmd;
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cmd = va.vertex(&x,&y);
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CHECK( cmd == mapnik::SEG_MOVETO );
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CHECK( x == Approx(-1) );
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CHECK( y == Approx(-1) );
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cmd = va.vertex(&x,&y);
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CHECK( cmd == mapnik::SEG_LINETO );
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CHECK( x == Approx(1) );
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CHECK( y == Approx(-1) );
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cmd = va.vertex(&x,&y);
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CHECK( cmd == mapnik::SEG_LINETO );
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CHECK( x == Approx(1) );
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CHECK( y == Approx(1) );
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cmd = va.vertex(&x,&y);
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CHECK( cmd == mapnik::SEG_LINETO );
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CHECK( x == Approx(-1) );
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CHECK( y == Approx(1) );
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cmd = va.vertex(&x,&y);
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CHECK( cmd == mapnik::SEG_CLOSE );
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CHECK( x == Approx(0) );
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CHECK( y == Approx(0) );
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cmd = va.vertex(&x,&y);
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CHECK( cmd == mapnik::SEG_CLOSE );
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CHECK( x == Approx(0) );
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CHECK( y == Approx(0) );
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cmd = va.vertex(&x,&y);
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REQUIRE( cmd == mapnik::SEG_END );
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REQUIRE( x == Approx(0) );
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REQUIRE( y == Approx(0) );
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}
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}
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