mirror of
https://github.com/SoftFever/OrcaSlicer.git
synced 2025-08-10 07:15:08 -06:00
Initial version of sl1 import with sla::Raster refactor.
This commit is contained in:
tamasmeszaros
parent
6eb51a1cca
commit
247fca6d55
39 changed files with 2136 additions and 1094 deletions
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@ -13,6 +13,7 @@ add_executable(${_TEST_NAME}_tests
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test_stl.cpp
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test_meshsimplify.cpp
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test_meshboolean.cpp
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test_marchingsquares.cpp
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test_timeutils.cpp
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)
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342
tests/libslic3r/test_marchingsquares.cpp
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342
tests/libslic3r/test_marchingsquares.cpp
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@ -0,0 +1,342 @@
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#include <catch2/catch.hpp>
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#include <test_utils.hpp>
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#include <fstream>
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#include <libslic3r/MarchingSquares.hpp>
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#include <libslic3r/SLA/RasterToPolygons.hpp>
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#include <libslic3r/SLA/AGGRaster.hpp>
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#include <libslic3r/MTUtils.hpp>
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#include <libslic3r/SVG.hpp>
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#include <libslic3r/ClipperUtils.hpp>
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#include <libslic3r/TriangulateWall.hpp>
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#include <libslic3r/Tesselate.hpp>
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#include <libslic3r/SlicesToTriangleMesh.hpp>
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#include <libslic3r/SLA/Contour3D.hpp>
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using namespace Slic3r;
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static Slic3r::sla::RasterGrayscaleAA create_raster(
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const sla::RasterBase::Resolution &res,
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double disp_w = 100.,
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double disp_h = 100.)
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{
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sla::RasterBase::PixelDim pixdim{disp_w / res.width_px, disp_h / res.height_px};
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auto bb = BoundingBox({0, 0}, {scaled(disp_w), scaled(disp_h)});
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sla::RasterBase::Trafo trafo;
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// trafo.center_x = bb.center().x();
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// trafo.center_y = bb.center().y();
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// trafo.center_x = scaled(pixdim.w_mm);
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// trafo.center_y = scaled(pixdim.h_mm);
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return sla::RasterGrayscaleAA{res, pixdim, trafo, agg::gamma_threshold(.5)};
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}
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static ExPolygon square(double a, Point center = {0, 0})
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{
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ExPolygon poly;
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coord_t V = scaled(a / 2.);
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poly.contour.points = {{-V, -V}, {V, -V}, {V, V}, {-V, V}};
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poly.translate(center.x(), center.y());
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return poly;
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}
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static ExPolygon square_with_hole(double a, Point center = {0, 0})
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{
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ExPolygon poly = square(a);
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poly.holes.emplace_back();
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coord_t V = scaled(a / 4.);
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poly.holes.front().points = {{-V, V}, {V, V}, {V, -V}, {-V, -V}};
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poly.translate(center.x(), center.y());
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return poly;
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}
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static ExPolygons circle_with_hole(double r, Point center = {0, 0}) {
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ExPolygon poly;
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std::vector<double> pis = linspace_vector(0., 2 * PI, 100);
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coord_t rs = scaled(r);
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for (double phi : pis) {
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poly.contour.points.emplace_back(rs * std::cos(phi), rs * std::sin(phi));
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}
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poly.holes.emplace_back(poly.contour);
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poly.holes.front().reverse();
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for (auto &p : poly.holes.front().points) p /= 2;
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poly.translate(center.x(), center.y());
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return {poly};
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}
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template<class Rst>
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static void test_expolys(Rst && rst,
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const ExPolygons & ref,
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float accuracy,
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const std::string &name = "test")
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{
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for (const ExPolygon &expoly : ref) rst.draw(expoly);
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std::fstream out(name + ".png", std::ios::out);
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out << rst.encode(sla::PNGRasterEncoder{});
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out.close();
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ExPolygons extracted = sla::raster_to_polygons(rst, accuracy);
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SVG svg(name + ".svg");
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svg.draw(extracted);
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svg.Close();
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REQUIRE(extracted.size() == ref.size());
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for (size_t i = 0; i < ref.size(); ++i) {
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REQUIRE(extracted[i].contour.is_counter_clockwise());
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REQUIRE(extracted[i].holes.size() == ref[i].holes.size());
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for (auto &h : extracted[i].holes) REQUIRE(h.is_clockwise());
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double refa = ref[i].area();
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REQUIRE(std::abs(extracted[i].area() - refa) < 0.1 * refa);
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}
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}
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TEST_CASE("Empty raster should result in empty polygons", "[MarchingSquares]") {
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sla::RasterGrayscaleAAGammaPower rst{{}, {}, {}};
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ExPolygons extracted = sla::raster_to_polygons(rst);
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REQUIRE(extracted.size() == 0);
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}
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TEST_CASE("Marching squares directions", "[MarchingSquares]") {
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marchsq::Coord crd{1, 1};
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REQUIRE(step(crd, marchsq::__impl::Dir::left).r == 1);
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REQUIRE(step(crd, marchsq::__impl::Dir::left).c == 0);
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REQUIRE(step(crd, marchsq::__impl::Dir::down).r == 2);
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REQUIRE(step(crd, marchsq::__impl::Dir::down).c == 1);
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REQUIRE(step(crd, marchsq::__impl::Dir::right).r == 1);
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REQUIRE(step(crd, marchsq::__impl::Dir::right).c == 2);
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REQUIRE(step(crd, marchsq::__impl::Dir::up).r == 0);
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REQUIRE(step(crd, marchsq::__impl::Dir::up).c == 1);
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}
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TEST_CASE("4x4 raster with one ring", "[MarchingSquares]") {
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sla::RasterBase::PixelDim pixdim{1, 1};
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// We need one additional row and column to detect edges
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sla::RasterGrayscaleAA rst{{5, 5}, pixdim, {}, agg::gamma_threshold(.5)};
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// Draw a triangle from individual pixels
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rst.draw(square(1., {1500000, 1500000}));
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rst.draw(square(1., {2500000, 1500000}));
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rst.draw(square(1., {3500000, 1500000}));
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rst.draw(square(1., {2500000, 2500000}));
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rst.draw(square(1., {3500000, 2500000}));
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rst.draw(square(1., {3500000, 3500000}));
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std::fstream out("4x4.png", std::ios::out);
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out << rst.encode(sla::PNGRasterEncoder{});
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out.close();
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ExPolygons extracted = sla::raster_to_polygons(rst);
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SVG svg("4x4.svg");
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svg.draw(extracted);
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svg.Close();
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REQUIRE(extracted.size() == 1);
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}
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TEST_CASE("4x4 raster with two rings", "[MarchingSquares]") {
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sla::RasterBase::PixelDim pixdim{1, 1};
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// We need one additional row and column to detect edges
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sla::RasterGrayscaleAA rst{{5, 5}, pixdim, {}, agg::gamma_threshold(.5)};
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SECTION("Ambiguous case with 'ac' square") {
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// Draw a triangle from individual pixels
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rst.draw(square(1., {3500000, 2500000}));
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rst.draw(square(1., {3500000, 3500000}));
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rst.draw(square(1., {2500000, 3500000}));
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rst.draw(square(1., {2500000, 1500000}));
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rst.draw(square(1., {1500000, 1500000}));
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rst.draw(square(1., {1500000, 2500000}));
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std::fstream out("4x4_ac.png", std::ios::out);
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out << rst.encode(sla::PNGRasterEncoder{});
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out.close();
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ExPolygons extracted = sla::raster_to_polygons(rst);
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SVG svg("4x4_ac.svg");
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svg.draw(extracted);
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svg.Close();
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REQUIRE(extracted.size() == 2);
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}
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SECTION("Ambiguous case with 'bd' square") {
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// Draw a triangle from individual pixels
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rst.draw(square(1., {3500000, 1500000}));
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rst.draw(square(1., {3500000, 2500000}));
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rst.draw(square(1., {2500000, 1500000}));
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rst.draw(square(1., {1500000, 2500000}));
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rst.draw(square(1., {1500000, 3500000}));
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rst.draw(square(1., {2500000, 3500000}));
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std::fstream out("4x4_bd.png", std::ios::out);
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out << rst.encode(sla::PNGRasterEncoder{});
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out.close();
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ExPolygons extracted = sla::raster_to_polygons(rst);
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SVG svg("4x4_bd.svg");
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svg.draw(extracted);
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svg.Close();
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REQUIRE(extracted.size() == 2);
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}
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}
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TEST_CASE("Square with hole in the middle", "[MarchingSquares]") {
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using namespace Slic3r;
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ExPolygons inp = {square_with_hole(50.)};
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SECTION("Proportional raster, 1x1 mm pixel size, full accuracy") {
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test_expolys(create_raster({100, 100}, 100., 100.), inp, 1.f, "square_with_hole_proportional_1x1_mm_px_full");
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}
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SECTION("Proportional raster, 1x1 mm pixel size, half accuracy") {
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test_expolys(create_raster({100, 100}, 100., 100.), inp, .5f, "square_with_hole_proportional_1x1_mm_px_half");
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}
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SECTION("Landscape raster, 1x1 mm pixel size, full accuracy") {
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test_expolys(create_raster({150, 100}, 150., 100.), inp, 1.f, "square_with_hole_landsc_1x1_mm_px_full");
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}
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SECTION("Landscape raster, 1x1 mm pixel size, half accuracy") {
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test_expolys(create_raster({150, 100}, 150., 100.), inp, .5f, "square_with_hole_landsc_1x1_mm_px_half");
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}
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SECTION("Portrait raster, 1x1 mm pixel size, full accuracy") {
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test_expolys(create_raster({100, 150}, 100., 150.), inp, 1.f, "square_with_hole_portrait_1x1_mm_px_full");
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}
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SECTION("Portrait raster, 1x1 mm pixel size, half accuracy") {
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test_expolys(create_raster({100, 150}, 100., 150.), inp, .5f, "square_with_hole_portrait_1x1_mm_px_half");
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}
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SECTION("Proportional raster, 2x2 mm pixel size, full accuracy") {
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test_expolys(create_raster({200, 200}, 100., 100.), inp, 1.f, "square_with_hole_proportional_2x2_mm_px_full");
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}
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SECTION("Proportional raster, 2x2 mm pixel size, half accuracy") {
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test_expolys(create_raster({200, 200}, 100., 100.), inp, .5f, "square_with_hole_proportional_2x2_mm_px_half");
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}
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SECTION("Proportional raster, 0.5x0.5 mm pixel size, full accuracy") {
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test_expolys(create_raster({50, 50}, 100., 100.), inp, 1.f, "square_with_hole_proportional_0.5x0.5_mm_px_full");
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}
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SECTION("Proportional raster, 0.5x0.5 mm pixel size, half accuracy") {
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test_expolys(create_raster({50, 50}, 100., 100.), inp, .5f, "square_with_hole_proportional_0.5x0.5_mm_px_half");
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}
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}
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TEST_CASE("Circle with hole in the middle", "[MarchingSquares]") {
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using namespace Slic3r;
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test_expolys(create_raster({100, 100}), circle_with_hole(25.), 1.f, "circle_with_hole");
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}
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static void recreate_object_from_slices(const std::string &objname, float lh) {
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TriangleMesh mesh = load_model(objname);
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mesh.require_shared_vertices();
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auto bb = mesh.bounding_box();
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std::vector<ExPolygons> layers;
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slice_mesh(mesh, grid(float(bb.min.z()), float(bb.max.z()), lh), layers, 0.f, []{});
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TriangleMesh out = slices_to_triangle_mesh(layers, bb.min.z(), double(lh), double(lh));
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out.require_shared_vertices();
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out.WriteOBJFile("out_from_slices.obj");
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}
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static void recreate_object_from_rasters(const std::string &objname, float lh) {
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TriangleMesh mesh = load_model(objname);
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auto bb = mesh.bounding_box();
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// Vec3f tr = -bb.center().cast<float>();
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// mesh.translate(tr.x(), tr.y(), tr.z());
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// bb = mesh.bounding_box();
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std::vector<ExPolygons> layers;
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slice_mesh(mesh, grid(float(bb.min.z()) + lh, float(bb.max.z()), lh), layers, 0.f, []{});
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sla::RasterBase::Resolution res{2560, 1440};
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double disp_w = 120.96;
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double disp_h = 68.04;
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size_t cntr = 0;
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for (ExPolygons &layer : layers) {
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auto rst = create_raster(res, disp_w, disp_h);
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for (ExPolygon &island : layer) {
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rst.draw(island);
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}
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std::fstream out(objname + std::to_string(cntr) + ".png", std::ios::out);
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out << rst.encode(sla::PNGRasterEncoder{});
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out.close();
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ExPolygons layer_ = sla::raster_to_polygons(rst);
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// float delta = scaled(std::min(rst.pixel_dimensions().h_mm,
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// rst.pixel_dimensions().w_mm));
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// layer_ = expolygons_simplify(layer_, delta);
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SVG svg(objname + std::to_string(cntr) + ".svg", BoundingBox(Point{0, 0}, Point{scaled(disp_w), scaled(disp_h)}));
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svg.draw(layer_);
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svg.draw(layer, "green");
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svg.Close();
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double layera = 0., layera_ = 0.;
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for (auto &p : layer) layera += p.area();
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for (auto &p : layer_) layera_ += p.area();
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std::cout << cntr++ << std::endl;
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double diff = std::abs(layera_ - layera);
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REQUIRE((diff <= 0.1 * layera || diff < scaled<double>(1.) * scaled<double>(1.)));
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layer = std::move(layer_);
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}
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TriangleMesh out = slices_to_triangle_mesh(layers, bb.min.z(), double(lh), double(lh));
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out.require_shared_vertices();
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out.WriteOBJFile("out_from_rasters.obj");
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}
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TEST_CASE("Recreate object from rasters", "[SL1Import]") {
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recreate_object_from_rasters("triang.obj", 0.05f);
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}
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@ -154,19 +154,12 @@ TEST_CASE("FloorSupportsDoNotPierceModel", "[SLASupportGeneration]") {
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test_support_model_collision(fname, supportcfg);
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}
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TEST_CASE("DefaultRasterShouldBeEmpty", "[SLARasterOutput]") {
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sla::Raster raster;
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REQUIRE(raster.empty());
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}
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TEST_CASE("InitializedRasterShouldBeNONEmpty", "[SLARasterOutput]") {
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// Default Prusa SL1 display parameters
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sla::Raster::Resolution res{2560, 1440};
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sla::Raster::PixelDim pixdim{120. / res.width_px, 68. / res.height_px};
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sla::RasterBase::Resolution res{2560, 1440};
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sla::RasterBase::PixelDim pixdim{120. / res.width_px, 68. / res.height_px};
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sla::Raster raster;
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raster.reset(res, pixdim);
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REQUIRE_FALSE(raster.empty());
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sla::RasterGrayscaleAAGammaPower raster(res, pixdim, {}, 1.);
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REQUIRE(raster.resolution().width_px == res.width_px);
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REQUIRE(raster.resolution().height_px == res.height_px);
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REQUIRE(raster.pixel_dimensions().w_mm == Approx(pixdim.w_mm));
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@ -174,13 +167,14 @@ TEST_CASE("InitializedRasterShouldBeNONEmpty", "[SLARasterOutput]") {
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}
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TEST_CASE("MirroringShouldBeCorrect", "[SLARasterOutput]") {
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sla::Raster::TMirroring mirrorings[] = {sla::Raster::NoMirror,
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sla::Raster::MirrorX,
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sla::Raster::MirrorY,
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sla::Raster::MirrorXY};
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sla::RasterBase::TMirroring mirrorings[] = {sla::RasterBase::NoMirror,
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sla::RasterBase::MirrorX,
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sla::RasterBase::MirrorY,
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sla::RasterBase::MirrorXY};
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sla::RasterBase::Orientation orientations[] =
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{sla::RasterBase::roLandscape, sla::RasterBase::roPortrait};
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sla::Raster::Orientation orientations[] = {sla::Raster::roLandscape,
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sla::Raster::roPortrait};
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for (auto orientation : orientations)
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for (auto &mirror : mirrorings)
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check_raster_transformations(orientation, mirror);
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@ -189,10 +183,11 @@ TEST_CASE("MirroringShouldBeCorrect", "[SLARasterOutput]") {
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TEST_CASE("RasterizedPolygonAreaShouldMatch", "[SLARasterOutput]") {
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double disp_w = 120., disp_h = 68.;
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sla::Raster::Resolution res{2560, 1440};
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sla::Raster::PixelDim pixdim{disp_w / res.width_px, disp_h / res.height_px};
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sla::RasterBase::Resolution res{2560, 1440};
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sla::RasterBase::PixelDim pixdim{disp_w / res.width_px, disp_h / res.height_px};
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sla::Raster raster{res, pixdim};
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double gamma = 1.;
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sla::RasterGrayscaleAAGammaPower raster(res, pixdim, {}, gamma);
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auto bb = BoundingBox({0, 0}, {scaled(disp_w), scaled(disp_h)});
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ExPolygon poly = square_with_hole(10.);
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@ -215,6 +210,13 @@ TEST_CASE("RasterizedPolygonAreaShouldMatch", "[SLARasterOutput]") {
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diff = std::abs(a - ra);
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REQUIRE(diff <= predict_error(poly, pixdim));
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sla::RasterGrayscaleAA raster0(res, pixdim, {}, [](double) { return 0.; });
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REQUIRE(raster_pxsum(raster0) == 0);
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raster0.draw(poly);
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ra = raster_white_area(raster);
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REQUIRE(raster_pxsum(raster0) == 0);
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}
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TEST_CASE("Triangle mesh conversions should be correct", "[SLAConversions]")
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|
|
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@ -1,4 +1,5 @@
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#include "sla_test_utils.hpp"
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#include "libslic3r/SLA/AGGRaster.hpp"
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void test_support_model_collision(const std::string &obj_filename,
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const sla::SupportConfig &input_supportcfg,
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|
@ -293,18 +294,19 @@ void check_validity(const TriangleMesh &input_mesh, int flags)
|
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}
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}
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|
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void check_raster_transformations(sla::Raster::Orientation o, sla::Raster::TMirroring mirroring)
|
||||
void check_raster_transformations(sla::RasterBase::Orientation o, sla::RasterBase::TMirroring mirroring)
|
||||
{
|
||||
double disp_w = 120., disp_h = 68.;
|
||||
sla::Raster::Resolution res{2560, 1440};
|
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sla::Raster::PixelDim pixdim{disp_w / res.width_px, disp_h / res.height_px};
|
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sla::RasterBase::Resolution res{2560, 1440};
|
||||
sla::RasterBase::PixelDim pixdim{disp_w / res.width_px, disp_h / res.height_px};
|
||||
|
||||
auto bb = BoundingBox({0, 0}, {scaled(disp_w), scaled(disp_h)});
|
||||
sla::Raster::Trafo trafo{o, mirroring};
|
||||
trafo.origin_x = bb.center().x();
|
||||
trafo.origin_y = bb.center().y();
|
||||
sla::RasterBase::Trafo trafo{o, mirroring};
|
||||
trafo.center_x = bb.center().x();
|
||||
trafo.center_y = bb.center().y();
|
||||
double gamma = 1.;
|
||||
|
||||
sla::Raster raster{res, pixdim, trafo};
|
||||
sla::RasterGrayscaleAAGammaPower raster{res, pixdim, trafo, gamma};
|
||||
|
||||
// create box of size 32x32 pixels (not 1x1 to avoid antialiasing errors)
|
||||
coord_t pw = 32 * coord_t(std::ceil(scaled<double>(pixdim.w_mm)));
|
||||
|
|
@ -319,7 +321,7 @@ void check_raster_transformations(sla::Raster::Orientation o, sla::Raster::TMirr
|
|||
|
||||
// Now calculate the position of the translated box according to output
|
||||
// trafo.
|
||||
if (o == sla::Raster::Orientation::roPortrait) expected_box.rotate(PI / 2.);
|
||||
if (o == sla::RasterBase::Orientation::roPortrait) expected_box.rotate(PI / 2.);
|
||||
|
||||
if (mirroring[X])
|
||||
for (auto &p : expected_box.contour.points) p.x() = -p.x();
|
||||
|
|
@ -340,10 +342,9 @@ void check_raster_transformations(sla::Raster::Orientation o, sla::Raster::TMirr
|
|||
auto px = raster.read_pixel(w, h);
|
||||
|
||||
if (px != FullWhite) {
|
||||
sla::PNGImage img;
|
||||
std::fstream outf("out.png", std::ios::out);
|
||||
|
||||
outf << img.serialize(raster);
|
||||
outf << raster.encode(sla::PNGRasterEncoder());
|
||||
}
|
||||
|
||||
REQUIRE(px == FullWhite);
|
||||
|
|
@ -361,9 +362,21 @@ ExPolygon square_with_hole(double v)
|
|||
return poly;
|
||||
}
|
||||
|
||||
double raster_white_area(const sla::Raster &raster)
|
||||
long raster_pxsum(const sla::RasterGrayscaleAA &raster)
|
||||
{
|
||||
if (raster.empty()) return std::nan("");
|
||||
auto res = raster.resolution();
|
||||
long a = 0;
|
||||
|
||||
for (size_t x = 0; x < res.width_px; ++x)
|
||||
for (size_t y = 0; y < res.height_px; ++y)
|
||||
a += raster.read_pixel(x, y);
|
||||
|
||||
return a;
|
||||
}
|
||||
|
||||
double raster_white_area(const sla::RasterGrayscaleAA &raster)
|
||||
{
|
||||
if (raster.resolution().pixels() == 0) return std::nan("");
|
||||
|
||||
auto res = raster.resolution();
|
||||
double a = 0;
|
||||
|
|
@ -377,7 +390,7 @@ double raster_white_area(const sla::Raster &raster)
|
|||
return a;
|
||||
}
|
||||
|
||||
double predict_error(const ExPolygon &p, const sla::Raster::PixelDim &pd)
|
||||
double predict_error(const ExPolygon &p, const sla::RasterBase::PixelDim &pd)
|
||||
{
|
||||
auto lines = p.lines();
|
||||
double pix_err = pixel_area(FullWhite, pd) / 2.;
|
||||
|
|
|
|||
|
|
@ -16,7 +16,7 @@
|
|||
#include "libslic3r/SLA/SupportTreeBuilder.hpp"
|
||||
#include "libslic3r/SLA/SupportTreeBuildsteps.hpp"
|
||||
#include "libslic3r/SLA/SupportPointGenerator.hpp"
|
||||
#include "libslic3r/SLA/Raster.hpp"
|
||||
#include "libslic3r/SLA/AGGRaster.hpp"
|
||||
#include "libslic3r/SLA/ConcaveHull.hpp"
|
||||
#include "libslic3r/MTUtils.hpp"
|
||||
|
||||
|
|
@ -170,18 +170,19 @@ static constexpr const TPixel FullBlack = 0;
|
|||
|
||||
template <class A, int N> constexpr int arraysize(const A (&)[N]) { return N; }
|
||||
|
||||
void check_raster_transformations(sla::Raster::Orientation o,
|
||||
sla::Raster::TMirroring mirroring);
|
||||
void check_raster_transformations(sla::RasterBase::Orientation o,
|
||||
sla::RasterBase::TMirroring mirroring);
|
||||
|
||||
ExPolygon square_with_hole(double v);
|
||||
|
||||
inline double pixel_area(TPixel px, const sla::Raster::PixelDim &pxdim)
|
||||
inline double pixel_area(TPixel px, const sla::RasterBase::PixelDim &pxdim)
|
||||
{
|
||||
return (pxdim.h_mm * pxdim.w_mm) * px * 1. / (FullWhite - FullBlack);
|
||||
}
|
||||
|
||||
double raster_white_area(const sla::Raster &raster);
|
||||
double raster_white_area(const sla::RasterGrayscaleAA &raster);
|
||||
long raster_pxsum(const sla::RasterGrayscaleAA &raster);
|
||||
|
||||
double predict_error(const ExPolygon &p, const sla::Raster::PixelDim &pd);
|
||||
double predict_error(const ExPolygon &p, const sla::RasterBase::PixelDim &pd);
|
||||
|
||||
#endif // SLA_TEST_UTILS_HPP
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue