166 lines
6.3 KiB
C++
166 lines
6.3 KiB
C++
#include <catch2/catch.hpp>
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#include <libslic3r/CutSurface.hpp>
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#include <libslic3r/TriangleMesh.hpp> // its_make_cube + its_merge
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using namespace Slic3r;
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TEST_CASE("Cut character from surface", "[]")
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{
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std::string font_path = std::string(TEST_DATA_DIR) +
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"/../../resources/fonts/NotoSans-Regular.ttf";
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char letter = '%';
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float flatness = 2.;
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unsigned int font_index = 0; // collection
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float z_depth = 50.f; // projection size
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auto font = Emboss::create_font_file(font_path.c_str());
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REQUIRE(font != nullptr);
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std::optional<Emboss::Glyph> glyph =
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Emboss::letter2glyph(*font, font_index, letter, flatness);
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REQUIRE(glyph.has_value());
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ExPolygons shapes = glyph->shape;
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REQUIRE(!shapes.empty());
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Transform3d tr = Transform3d::Identity();
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tr.translate(Vec3d(0., 0., -z_depth));
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tr.scale(Emboss::SHAPE_SCALE);
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Emboss::OrthoProject cut_projection(tr, Vec3f(0.f, 0.f, z_depth));
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auto object = its_make_cube(782 - 49 + 50, 724 + 10 + 50, 5);
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its_translate(object, Vec3f(49 - 25, -10 - 25, -40));
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auto cube2 = object; // copy
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its_translate(cube2, Vec3f(100, -40, 7.5));
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its_merge(object, std::move(cube2));
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std::vector<indexed_triangle_set> objects{object};
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// Call core function for cut surface
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auto surfaces = cut_surface(shapes, objects, cut_projection, 0.5);
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CHECK(!surfaces.empty());
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Emboss::OrthoProject projection(Transform3d::Identity(),
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Vec3f(0.f, 0.f, 10.f));
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its_translate(surfaces, Vec3f(0.f, 0.f, 10));
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indexed_triangle_set its = cut2model(surfaces, projection);
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CHECK(!its.empty());
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// its_write_obj(its, "C:/data/temp/projected.obj");
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}
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//#define DEBUG_3MF
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#ifdef DEBUG_3MF
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// Test load of 3mf
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#include "libslic3r/Format/3mf.hpp"
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#include "libslic3r/Model.hpp"
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static std::vector<indexed_triangle_set> transform_volumes(ModelVolume *mv) {
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const auto &volumes = mv->get_object()->volumes;
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std::vector<indexed_triangle_set> results;
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results.reserve(volumes.size());
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// Improve create object from part or use gl_volume
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// Get first model part in object
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for (const ModelVolume *v : volumes) {
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if (v->id() == mv->id()) continue;
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if (!v->is_model_part()) continue;
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const TriangleMesh &tm = v->mesh();
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if (tm.empty()) continue;
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if (tm.its.empty()) continue;
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results.push_back(tm.its); // copy: indexed_triangle_set
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indexed_triangle_set& its = results.back();
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its_transform(its,v->get_matrix());
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}
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return results;
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}
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static Emboss::OrthoProject create_projection_for_cut(
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Transform3d tr,
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double shape_scale,
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const BoundingBox &shape_bb,
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const std::pair<float, float> &z_range)
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{
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// create sure that emboss object is bigger than source object
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const float safe_extension = 1.0f;
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float min_z = z_range.first - safe_extension;
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float max_z = z_range.second + safe_extension;
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assert(min_z < max_z);
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// range between min and max value
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double projection_size = max_z - min_z;
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Matrix3d transformation_for_vector = tr.linear();
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// Projection must be negative value.
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// System of text coordinate
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// X .. from left to right
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// Y .. from bottom to top
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// Z .. from text to eye
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Vec3d untransformed_direction(0., 0., projection_size);
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Vec3f project_direction =
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(transformation_for_vector * untransformed_direction).cast<float>();
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// Projection is in direction from far plane
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tr.translate(Vec3d(0., 0., min_z));
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tr.scale(shape_scale);
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// Text alignemnt to center 2D
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Vec2d move = -(shape_bb.max + shape_bb.min).cast<double>() / 2.;
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// Vec2d move = -shape_bb.center().cast<double>(); // not precisse
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tr.translate(Vec3d(move.x(), move.y(), 0.));
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return Emboss::OrthoProject(tr, project_direction);
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}
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TEST_CASE("CutSurface in 3mf", "[Emboss]")
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{
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std::string path_to_3mf = "C:/Users/Filip Sykala/Downloads/EmbossFromMultiVolumes.3mf";
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int object_id = 0;
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int text_volume_id = 2;
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Model model;
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DynamicPrintConfig config;
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ConfigSubstitutionContext ctxt{ForwardCompatibilitySubstitutionRule::Disable};
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CHECK(load_3mf(path_to_3mf.c_str(), config, ctxt, &model, false));
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CHECK(object_id >= 0);
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CHECK((size_t)object_id < model.objects.size());
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ModelObject* mo = model.objects[object_id];
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CHECK(mo != nullptr);
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CHECK(text_volume_id >= 0);
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CHECK((size_t)text_volume_id < mo->volumes.size());
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ModelVolume *mv_text = mo->volumes[text_volume_id];
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CHECK(mv_text != nullptr);
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CHECK(mv_text->text_configuration.has_value());
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TextConfiguration &tc = *mv_text->text_configuration;
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/* // Need GUI to load font by wx
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std::optional<wxFont> wx_font = GUI::WxFontUtils::load_wxFont(tc.font_item.path);
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CHECK(wx_font.has_value());
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Emboss::FontFileWithCache ff(GUI::WxFontUtils::create_font_file(*wx_font));
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CHECK(ff.font_file != nullptr);
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/*/ // end use GUI
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// start use fake font
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std::string font_path = std::string(TEST_DATA_DIR) +
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"/../../resources/fonts/NotoSans-Regular.ttf";
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Emboss::FontFileWithCache ff(Emboss::create_font_file(font_path.c_str()));
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// */ // end use fake font
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CHECK(ff.has_value());
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std::vector<indexed_triangle_set> its = transform_volumes(mv_text);
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BoundingBoxf3 bb;
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for (auto &i : its) bb.merge(Slic3r::bounding_box(i));
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Transform3d cut_projection_tr = mv_text->get_matrix() * tc.fix_3mf_tr->inverse();
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Transform3d emboss_tr = cut_projection_tr.inverse();
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BoundingBoxf3 mesh_bb_tr = bb.transformed(emboss_tr);
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std::pair<float, float> z_range{mesh_bb_tr.min.z(), mesh_bb_tr.max.z()};
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FontProp fp = tc.font_item.prop;
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ExPolygons shapes = Emboss::text2shapes(ff, tc.text.c_str(), fp);
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double shape_scale = Emboss::get_shape_scale(fp, *ff.font_file);
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Emboss::OrthoProject projection = create_projection_for_cut(
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cut_projection_tr, shape_scale, get_extents(shapes), z_range);
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float projection_ratio = -z_range.first / (z_range.second - z_range.first);
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SurfaceCut cut = cut_surface(shapes, its, projection, projection_ratio);
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its_write_obj(cut, "C:/data/temp/cutSurface/result_cut.obj");
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}
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#endif // DEBUG_3MF
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