267 lines
6.2 KiB
C++
267 lines
6.2 KiB
C++
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#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 g;
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g.exterior_ring.add_coord(1,1);
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g.exterior_ring.add_coord(2,2);
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g.exterior_ring.add_coord(100,100);
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g.exterior_ring.add_coord(1,1);
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mapnik::geometry::polygon_vertex_adapter va(g);
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double x,y;
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unsigned cmd;
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// 0,0
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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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// 1,1
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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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// 100,100
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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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// last point should be same as first
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cmd = va.vertex(&x,&y);
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REQUIRE( cmd == mapnik::SEG_LINETO );
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REQUIRE( x == 1 );
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REQUIRE( y == 1 );
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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 g;
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g.exterior_ring.add_coord(0,0);
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g.exterior_ring.add_coord(-10,0);
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g.exterior_ring.add_coord(-10,10);
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g.exterior_ring.add_coord(0,10);
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g.exterior_ring.add_coord(0,0);
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std::vector<mapnik::geometry::linear_ring> interior_rings;
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mapnik::geometry::linear_ring hole;
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hole.add_coord(-7,7);
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hole.add_coord(-7,3);
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hole.add_coord(-3,3);
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hole.add_coord(-3,7);
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hole.add_coord(-7,7);
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g.add_hole(std::move(hole));
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mapnik::geometry::linear_ring hole_in_hole;
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hole_in_hole.add_coord(-6,4);
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hole_in_hole.add_coord(-6,6);
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hole_in_hole.add_coord(-4,6);
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hole_in_hole.add_coord(-4,4);
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hole_in_hole.add_coord(-6,4);
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g.add_hole(std::move(hole_in_hole));
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mapnik::geometry::polygon_vertex_adapter 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_LINETO );
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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_CLOSE );
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REQUIRE( x == 0 );
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REQUIRE( y == 0 );
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// first 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 == -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_LINETO );
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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_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_LINETO );
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REQUIRE( x == -6 );
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REQUIRE( y == 4 );
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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_LINETO );
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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_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_LINETO );
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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_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_LINETO );
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REQUIRE( x == -6 );
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REQUIRE( y == 4 );
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}
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}
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