1268 lines
51 KiB
C++
1268 lines
51 KiB
C++
#include <catch2/catch.hpp>
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#include <libslic3r/Emboss.hpp>
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#include <libslic3r/SVG.hpp> // only debug visualization
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#include <optional>
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#include <libslic3r/AABBTreeIndirect.hpp>
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#include <libslic3r/Utils.hpp> // for next_highest_power_of_2()
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#include <libslic3r/IntersectionPoints.hpp>
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using namespace Slic3r;
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namespace Private{
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// calculate multiplication of ray dir to intersect - inspired by
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// segment_segment_intersection when ray dir is normalized retur distance from
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// ray point to intersection No value mean no intersection
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std::optional<double> ray_segment_intersection(const Vec2d &r_point,
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const Vec2d &r_dir,
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const Vec2d &s0,
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const Vec2d &s1)
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{
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auto denominate = [](const Vec2d &v0, const Vec2d &v1) -> double {
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return v0.x() * v1.y() - v1.x() * v0.y();
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};
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Vec2d segment_dir = s1 - s0;
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double d = denominate(segment_dir, r_dir);
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if (std::abs(d) < std::numeric_limits<double>::epsilon())
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// Line and ray are collinear.
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return {};
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Vec2d s12 = s0 - r_point;
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double s_number = denominate(r_dir, s12);
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bool change_sign = false;
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if (d < 0.) {
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change_sign = true;
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d = -d;
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s_number = -s_number;
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}
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if (s_number < 0. || s_number > d)
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// Intersection outside of segment.
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return {};
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double r_number = denominate(segment_dir, s12);
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if (change_sign) r_number = -r_number;
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if (r_number < 0.)
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// Intersection before ray start.
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return {};
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return r_number / d;
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}
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Vec2d get_intersection(const Vec2d & point,
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const Vec2d & dir,
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const std::array<Vec2d, 3> &triangle)
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{
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std::optional<double> t;
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for (size_t i = 0; i < 3; ++i) {
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size_t i2 = i + 1;
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if (i2 == 3) i2 = 0;
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if (!t.has_value()) {
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t = ray_segment_intersection(point, dir, triangle[i],
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triangle[i2]);
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continue;
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}
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// small distance could be preccission inconsistance
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std::optional<double> t2 = ray_segment_intersection(point, dir,
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triangle[i],
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triangle[i2]);
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if (t2.has_value() && *t2 > *t) t = t2;
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}
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assert(t.has_value()); // Not found intersection.
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return point + dir * (*t);
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}
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Vec3d calc_hit_point(const igl::Hit & h,
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const Vec3i & triangle,
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const std::vector<Vec3f> &vertices)
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{
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double c1 = h.u;
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double c2 = h.v;
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double c0 = 1.0 - c1 - c2;
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Vec3d v0 = vertices[triangle[0]].cast<double>();
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Vec3d v1 = vertices[triangle[1]].cast<double>();
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Vec3d v2 = vertices[triangle[2]].cast<double>();
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return v0 * c0 + v1 * c1 + v2 * c2;
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}
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Vec3d calc_hit_point(const igl::Hit &h, indexed_triangle_set &its)
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{
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return calc_hit_point(h, its.indices[h.id], its.vertices);
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}
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} // namespace Private
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std::string get_font_filepath() {
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std::string resource_dir =
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std::string(TEST_DATA_DIR) + "/../../resources/";
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return resource_dir + "fonts/NotoSans-Regular.ttf";
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}
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#include "imgui/imstb_truetype.h"
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TEST_CASE("Read glyph C shape from font, stb library calls ONLY", "[Emboss]") {
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std::string font_path = get_font_filepath();
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char letter = 'C';
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// Read font file
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FILE *file = fopen(font_path.c_str(), "rb");
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REQUIRE(file != nullptr);
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// find size of file
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REQUIRE(fseek(file, 0L, SEEK_END) == 0);
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size_t size = ftell(file);
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REQUIRE(size != 0);
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rewind(file);
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std::vector<unsigned char> buffer(size);
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size_t count_loaded_bytes = fread((void *) &buffer.front(), 1, size, file);
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REQUIRE(count_loaded_bytes == size);
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// Use stb true type library
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int font_offset = stbtt_GetFontOffsetForIndex(buffer.data(), 0);
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REQUIRE(font_offset >= 0);
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stbtt_fontinfo font_info;
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REQUIRE(stbtt_InitFont(&font_info, buffer.data(), font_offset) != 0);
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int unicode_letter = (int) letter;
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int glyph_index = stbtt_FindGlyphIndex(&font_info, unicode_letter);
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REQUIRE(glyph_index != 0);
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stbtt_vertex *vertices;
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int num_verts = stbtt_GetGlyphShape(&font_info, glyph_index, &vertices);
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CHECK(num_verts > 0);
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free(vertices);
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}
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#include <libslic3r/Utils.hpp>
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TEST_CASE("Convert glyph % to model", "[Emboss]")
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{
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std::string font_path = get_font_filepath();
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unsigned int font_index = 0; // collection
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char letter = '%';
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float flatness = 2.;
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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 shape = glyph->shape;
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REQUIRE(!shape.empty());
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float z_depth = 1.f;
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Emboss::ProjectZ projection(z_depth);
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indexed_triangle_set its = Emboss::polygons2model(shape, projection);
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CHECK(!its.indices.empty());
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}
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//#define VISUALIZE
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#ifdef VISUALIZE
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TEST_CASE("Visualize glyph from font", "[Emboss]")
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{
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std::string font_path = "C:/data/ALIENATO.TTF";
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std::string text = "i";
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Emboss::FontFileWithCache font(
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Emboss::create_font_file(font_path.c_str()));
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REQUIRE(font.has_value());
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FontProp fp;
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fp.size_in_mm = 8;
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fp.emboss = 4;
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ExPolygons shapes = Emboss::text2shapes(font, text.c_str(), fp);
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// char letter = 'i';
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// unsigned int font_index = 0; // collection
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// float flatness = 5;
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// auto glyph = Emboss::letter2glyph(*font.font_file, font_index, letter,
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// flatness); ExPolygons shapes2 = glyph->shape; { SVG
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//svg("C:/data/temp/stored_letter.svg", get_extents(shapes2));
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//svg.draw(shapes2); } // debug shape
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REQUIRE(!shapes.empty());
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//{ SVG svg("C:/data/temp/shapes.svg"); svg.draw(shapes); } // debug shape
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float z_depth = 100.f;
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Emboss::ProjectZ projection(z_depth);
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indexed_triangle_set its = Emboss::polygons2model(shapes, projection);
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its_write_obj(its, "C:/data/temp/bad_glyph.obj");
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CHECK(!its.indices.empty());
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TriangleMesh tm(its);
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auto s = tm.stats();
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}
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#endif // VISUALIZE
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#include "test_utils.hpp"
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#include "nanosvg/nanosvg.h" // load SVG file
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#include "libslic3r/NSVGUtils.hpp"
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ExPolygons heal_and_check(const Polygons &polygons)
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{
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Pointfs intersections_prev = intersection_points(polygons);
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Points polygons_points = to_points(polygons);
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Points duplicits_prev = collect_duplicates(polygons_points);
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ExPolygons shape = Emboss::heal_shape(polygons);
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// Is default shape for unhealabled shape?
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bool is_default_shape =
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shape.size() == 1 &&
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shape.front().contour.points.size() == 4 &&
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shape.front().holes.size() == 1 &&
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shape.front().holes.front().points.size() == 4 ;
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CHECK(!is_default_shape);
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Pointfs intersections = intersection_points(shape);
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Points shape_points = to_points(shape);
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Points duplicits = collect_duplicates(shape_points);
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//{
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// BoundingBox bb(polygons_points);
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// // bb.scale(svg_scale);
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// SVG svg("C:/data/temp/test_visualization.svg", bb);
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// svg.draw(polygons, "gray"); // input
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// svg.draw(shape, "green"); // output
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// Points pts;
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// pts.reserve(intersections.size());
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// for (const Vec2d &intersection : intersections)
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// pts.push_back(intersection.cast<int>());
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// svg.draw(pts, "red", 10);
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// svg.draw(duplicits, "orenge", 10);
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//}
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CHECK(intersections.empty());
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CHECK(duplicits.empty());
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return shape;
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}
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void scale(Polygons &polygons, double multiplicator) {
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for (Polygon &polygon : polygons)
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for (Point &p : polygon) p *= multiplicator;
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}
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TEST_CASE("Heal of damaged polygons", "[Emboss]")
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{
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// Shape loaded from svg is letter 'i' from font 'ALIENATE.TTF'
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std::string file_name = "contour_ALIENATO.TTF_glyph_i.svg";
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std::string file_path = TEST_DATA_DIR PATH_SEPARATOR + file_name;
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NSVGimage *image = nsvgParseFromFile(file_path.c_str(), "px", 96.0f);
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Polygons polygons = NSVGUtils::to_polygons(image);
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nsvgDelete(image);
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heal_and_check(polygons);
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Polygons scaled_shape = polygons; // copy
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scale(scaled_shape, 1 / Emboss::SHAPE_SCALE);
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heal_and_check(scaled_shape);
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// different scale
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scale(scaled_shape, 10.);
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heal_and_check(scaled_shape);
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// check reverse order of points
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Polygons reverse_shape = polygons;
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for (Polygon &p : reverse_shape)
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std::reverse(p.points.begin(), p.points.end());
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heal_and_check(scaled_shape);
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#ifdef VISUALIZE
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CHECK(false);
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#endif // VISUALIZE
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}
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TEST_CASE("Heal of points close to line", "[Emboss]")
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{
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// Shape loaded from svg is letter 'i' from font 'ALIENATE.TTF'
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std::string file_name = "points_close_to_line.svg";
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std::string file_path = TEST_DATA_DIR PATH_SEPARATOR + file_name;
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NSVGimage *image = nsvgParseFromFile(file_path.c_str(), "px", 96.0f);
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Polygons polygons = NSVGUtils::to_polygons(image);
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nsvgDelete(image);
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REQUIRE(polygons.size() == 1);
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Polygon polygon = polygons.front();
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polygon.points.pop_back();// NSVG put first point as last one when polygon is closed
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ExPolygons expoly({ExPolygon(polygon)});
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CHECK(Emboss::divide_segments_for_close_point(expoly, .6));
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//{ SVG svg("C:/data/temp/healed.svg"); svg.draw(expoly);}
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CHECK(to_points(expoly).size() >= (to_points(polygon).size() + 2));
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}
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TEST_CASE("Convert text with glyph cache to model", "[Emboss]")
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{
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std::string font_path = get_font_filepath();
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std::string text =
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"Because Ford never learned to say his original name, \n\
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his father eventually died of shame, which is still \r\n\
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a terminal disease in some parts of the Galaxy.\n\r\
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The other kids at school nicknamed him Ix,\n\
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which in the language of Betelgeuse Five translates as\t\n\
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\"boy who is not able satisfactorily to explain what a Hrung is,\n\
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nor why it should choose to collapse on Betelgeuse Seven\".";
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float line_height = 10.f, depth = 2.f;
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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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Emboss::FontFileWithCache ffwc(std::move(font));
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FontProp fp{line_height, depth};
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ExPolygons shapes = Emboss::text2shapes(ffwc, text.c_str(), fp);
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REQUIRE(!shapes.empty());
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Emboss::ProjectZ projection(depth);
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indexed_triangle_set its = Emboss::polygons2model(shapes, projection);
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CHECK(!its.indices.empty());
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//its_write_obj(its, "C:/data/temp/text.obj");
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}
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TEST_CASE("Test hit point", "[AABBTreeIndirect]")
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{
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indexed_triangle_set its;
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its.vertices = {
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Vec3f(1, 1, 1),
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Vec3f(2, 10, 2),
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Vec3f(10, 0, 2),
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};
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its.indices = {Vec3i(0, 2, 1)};
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auto tree = AABBTreeIndirect::build_aabb_tree_over_indexed_triangle_set(
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its.vertices, its.indices);
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Vec3d ray_point(8, 1, 0);
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Vec3d ray_dir(0, 0, 1);
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igl::Hit hit;
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AABBTreeIndirect::intersect_ray_first_hit(its.vertices, its.indices, tree,
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ray_point, ray_dir, hit);
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Vec3d hp = Private::calc_hit_point(hit, its);
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CHECK(abs(hp.x() - ray_point.x()) < .1);
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CHECK(abs(hp.y() - ray_point.y()) < .1);
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}
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TEST_CASE("ray segment intersection", "[MeshBoolean]")
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{
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Vec2d r_point(1, 1);
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Vec2d r_dir(1, 0);
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// colinear
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CHECK(!Private::ray_segment_intersection(r_point, r_dir, Vec2d(0, 0), Vec2d(2, 0)).has_value());
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CHECK(!Private::ray_segment_intersection(r_point, r_dir, Vec2d(2, 0), Vec2d(0, 0)).has_value());
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// before ray
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CHECK(!Private::ray_segment_intersection(r_point, r_dir, Vec2d(0, 0), Vec2d(0, 2)).has_value());
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CHECK(!Private::ray_segment_intersection(r_point, r_dir, Vec2d(0, 2), Vec2d(0, 0)).has_value());
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// above ray
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CHECK(!Private::ray_segment_intersection(r_point, r_dir, Vec2d(2, 2), Vec2d(2, 3)).has_value());
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CHECK(!Private::ray_segment_intersection(r_point, r_dir, Vec2d(2, 3), Vec2d(2, 2)).has_value());
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// belove ray
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CHECK(!Private::ray_segment_intersection(r_point, r_dir, Vec2d(2, 0), Vec2d(2, -1)).has_value());
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CHECK(!Private::ray_segment_intersection(r_point, r_dir, Vec2d(2, -1), Vec2d(2, 0)).has_value());
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// intersection at [2,1] distance 1
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auto t1 = Private::ray_segment_intersection(r_point, r_dir, Vec2d(2, 0), Vec2d(2, 2));
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REQUIRE(t1.has_value());
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auto t2 = Private::ray_segment_intersection(r_point, r_dir, Vec2d(2, 2), Vec2d(2, 0));
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REQUIRE(t2.has_value());
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CHECK(abs(*t1 - *t2) < std::numeric_limits<double>::epsilon());
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}
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TEST_CASE("triangle intersection", "[]")
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{
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Vec2d point(1, 1);
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Vec2d dir(-1, 0);
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std::array<Vec2d, 3> triangle = {Vec2d(0, 0), Vec2d(5, 0), Vec2d(0, 5)};
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Vec2d i = Private::get_intersection(point, dir, triangle);
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CHECK(abs(i.x()) < std::numeric_limits<double>::epsilon());
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CHECK(abs(i.y() - 1.) < std::numeric_limits<double>::epsilon());
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}
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#if defined _WIN32
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#define FONT_DIR_PATH "C:/Windows/Fonts";
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#endif
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//#elif defined __linux__
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//#define FONT_DIR_PATH "/usr/share/fonts";
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//#elif defined __APPLE__
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//#define FONT_DIR_PATH "//System/Library/Fonts";
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//#endif
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#ifdef FONT_DIR_PATH
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#include <string>
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#include <iostream>
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#include <boost/filesystem.hpp>
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namespace fs = boost::filesystem;
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//#include <filesystem>
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//namespace fs = std::filesystem;
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// Check function Emboss::is_italic that exist some italic and some non-italic font.
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TEST_CASE("Italic check", "[Emboss]")
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{
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std::string dir_path = FONT_DIR_PATH;
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std::queue<std::string> dir_paths;
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dir_paths.push(dir_path);
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bool exist_italic = false;
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bool exist_non_italic = false;
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while (!dir_paths.empty()) {
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std::string dir_path = dir_paths.front();
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dir_paths.pop();
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for (const auto &entry : fs::directory_iterator(dir_path)) {
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const fs::path &act_path = entry.path();
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if (fs::is_directory(entry)) {
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dir_paths.push(act_path.string());
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continue;
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}
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std::string ext = act_path.extension().string();
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std::transform(ext.begin(), ext.end(), ext.begin(),
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[](unsigned char c) { return std::tolower(c); });
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if (ext != ".ttf") continue;
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std::string path_str = act_path.string();
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auto font_opt = Emboss::create_font_file(path_str.c_str());
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if (font_opt == nullptr) continue;
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unsigned int collection_number = 0;
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if (Emboss::is_italic(*font_opt, collection_number))
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exist_italic = true;
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else
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exist_non_italic = true;
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if (exist_italic && exist_non_italic) break;
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//std::cout << ((Emboss::is_italic(*font_opt)) ? "[yes] " : "[no ] ") << entry.path() << std::endl;
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}
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}
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CHECK(exist_italic);
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CHECK(exist_non_italic);
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}
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#endif // FONT_DIR_PATH
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#include "libslic3r/CutSurface.hpp"
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TEST_CASE("Cut surface", "[]")
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{
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std::string font_path = get_font_filepath();
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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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double z_depth = 50.; // 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 = Emboss::letter2glyph(*font,
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font_index,
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letter,
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flatness);
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REQUIRE(glyph.has_value());
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ExPolygons shape = glyph->shape;
|
|
REQUIRE(!shape.empty());
|
|
|
|
Transform3d tr = Transform3d::Identity();
|
|
tr.translate(Vec3d(0., 0., -z_depth));
|
|
tr.scale(Emboss::SHAPE_SCALE);
|
|
Emboss::OrthoProject cut_projection(tr, Vec3d(0., 0., z_depth));
|
|
|
|
auto object = its_make_cube(782 - 49 + 50, 724 + 10 + 50, 5);
|
|
its_translate(object, Vec3f(49 - 25, -10 - 25, -40));
|
|
auto cube2 = object; // copy
|
|
its_translate(cube2, Vec3f(100, -40, 7.5));
|
|
its_merge(object, std::move(cube2));
|
|
|
|
auto surfaces = cut_surface(shape, {object}, cut_projection, 0);
|
|
CHECK(!surfaces.empty());
|
|
|
|
Emboss::OrthoProject projection(Transform3d::Identity(), Vec3d(0., 0., 10.));
|
|
its_translate(surfaces, Vec3f(0., 0., 10.));
|
|
|
|
indexed_triangle_set its = cut2model(surfaces, projection);
|
|
CHECK(!its.empty());
|
|
//its_write_obj(its, "C:/data/temp/projected.obj");
|
|
}
|
|
|
|
#include <sstream>
|
|
#include <cereal/cereal.hpp>
|
|
#include <cereal/archives/binary.hpp>
|
|
TEST_CASE("UndoRedo serialization", "[Emboss]")
|
|
{
|
|
TextConfiguration tc;
|
|
tc.text = "Dovede-li se člověk zasmát sám sobě, nevyjde ze smíchu po celý život.";
|
|
EmbossStyle& es = tc.style;
|
|
es.name = "Seneca";
|
|
es.path = "Simply the best";
|
|
es.type = EmbossStyle::Type::file_path;
|
|
FontProp &fp = es.prop;
|
|
fp.angle = 100.;
|
|
fp.distance = 10.;
|
|
fp.char_gap = 1;
|
|
fp.use_surface = true;
|
|
tc.fix_3mf_tr = Transform3d::Identity();
|
|
|
|
std::stringstream ss; // any stream can be used
|
|
{
|
|
cereal::BinaryOutputArchive oarchive(ss); // Create an output archive
|
|
|
|
oarchive(tc);
|
|
} // archive goes out of scope, ensuring all contents are flushed
|
|
|
|
TextConfiguration tc_loaded;
|
|
{
|
|
cereal::BinaryInputArchive iarchive(ss); // Create an input archive
|
|
iarchive(tc_loaded);
|
|
}
|
|
CHECK(tc.style == tc_loaded.style);
|
|
CHECK(tc.text == tc_loaded.text);
|
|
CHECK(tc.fix_3mf_tr.has_value() == tc_loaded.fix_3mf_tr.has_value());
|
|
}
|
|
|
|
|
|
#include <CGAL/Polygon_mesh_processing/corefinement.h>
|
|
#include <CGAL/Exact_integer.h>
|
|
#include <CGAL/Surface_mesh.h>
|
|
#include <CGAL/Cartesian_converter.h>
|
|
|
|
/// <summary>
|
|
/// Distiguish point made by shape(Expolygon)
|
|
/// Referencing an ExPolygon contour plus a vertex base of the contour.
|
|
/// Used for adressing Vertex of mesh created by extrude ExPolygons
|
|
/// </summary>
|
|
struct ShapesVertexId {
|
|
// Index of an ExPolygon in ExPolygons.
|
|
int32_t expoly{ -1 };
|
|
|
|
// Index of a contour in ExPolygon.
|
|
// 0 - outer contour, >0 - hole
|
|
int32_t contour{ -1 };
|
|
|
|
// Base of the zero'th point of a contour in text mesh.
|
|
// There are two vertices (front and rear) created for each contour,
|
|
// thus there are 2x more vertices in text mesh than the number of contour points.
|
|
int32_t vertex_base{ -1 };
|
|
};
|
|
|
|
/// <summary>
|
|
/// IntersectingElemnt
|
|
///
|
|
/// Adress polygon inside of ExPolygon
|
|
/// Keep information about source of vertex:
|
|
/// - from face (one of 2 possible)
|
|
/// - from edge (one of 2 possible)
|
|
///
|
|
/// V1~~~~V2
|
|
/// : f1 /|
|
|
/// : / |
|
|
/// : /e1|
|
|
/// : / |e2
|
|
/// :/ f2 |
|
|
/// V1'~~~V2'
|
|
///
|
|
/// | .. edge
|
|
/// / .. edge
|
|
/// : .. foreign edge - neighbor
|
|
/// ~ .. no care edge - idealy should not cross model
|
|
/// V1,V1' .. projected 2d point to 3d
|
|
/// V2,V2' .. projected 2d point to 3d
|
|
///
|
|
/// f1 .. text_face_1 (triangle face made by side of shape contour)
|
|
/// f2 .. text_face_2
|
|
/// e1 .. text_edge_1 (edge on side of face made by side of shape contour)
|
|
/// e2 .. text_edge_2
|
|
///
|
|
/// </summary>
|
|
struct IntersectingElemnt
|
|
{
|
|
// Index into vector of ShapeVertexId
|
|
// describe point on shape contour
|
|
int32_t vertex_index{-1};
|
|
|
|
// index of point in Polygon contour
|
|
int32_t point_index{-1};
|
|
|
|
// vertex or edge ID, where edge ID is the index of the source point.
|
|
// There are 4 consecutive indices generated for a single glyph edge:
|
|
// 0th - 1st text edge (straight)
|
|
// 1th - 1st text face
|
|
// 2nd - 2nd text edge (diagonal)
|
|
// 3th - 2nd text face
|
|
// Type of intersecting element from extruded shape( 3d )
|
|
enum class Type {
|
|
edge_1 = 0,
|
|
face_1 = 1,
|
|
edge_2 = 2,
|
|
face_2 = 3,
|
|
|
|
undefined = 4
|
|
} type = Type::undefined;
|
|
};
|
|
|
|
namespace Slic3r::MeshBoolean::cgal2 {
|
|
|
|
namespace CGALProc = CGAL::Polygon_mesh_processing;
|
|
namespace CGALParams = CGAL::Polygon_mesh_processing::parameters;
|
|
|
|
using EpicKernel = CGAL::Exact_predicates_inexact_constructions_kernel;
|
|
using _EpicMesh = CGAL::Surface_mesh<EpicKernel::Point_3>;
|
|
// using EpecKernel = CGAL::Exact_predicates_exact_constructions_kernel;
|
|
// using _EpecMesh = CGAL::Surface_mesh<EpecKernel::Point_3>;
|
|
|
|
using CGALMesh = _EpicMesh;
|
|
|
|
/// <summary>
|
|
/// Convert triangle mesh model to CGAL Surface_mesh
|
|
/// Add property map for source face index
|
|
/// </summary>
|
|
/// <param name="its">Model</param>
|
|
/// <param name="face_map_name">Property map name for store conversion from CGAL face to index to its</param>
|
|
/// <returns>CGAL mesh - half edge mesh</returns>
|
|
CGALMesh to_cgal(const indexed_triangle_set &its,
|
|
const std::string &face_map_name)
|
|
{
|
|
CGALMesh result;
|
|
if (its.empty()) return result;
|
|
|
|
const std::vector<stl_vertex> &V = its.vertices;
|
|
const std::vector<stl_triangle_vertex_indices> &F = its.indices;
|
|
|
|
// convert from CGAL face to its face
|
|
auto face_map = result.add_property_map<CGALMesh::Face_index, int32_t>(face_map_name).first;
|
|
|
|
size_t vertices_count = V.size();
|
|
size_t edges_count = (F.size() * 3) / 2;
|
|
size_t faces_count = F.size();
|
|
result.reserve(vertices_count, edges_count, faces_count);
|
|
|
|
for (auto &v : V)
|
|
result.add_vertex(typename CGALMesh::Point{v.x(), v.y(), v.z()});
|
|
|
|
using VI = typename CGALMesh::Vertex_index;
|
|
for (auto &f : F)
|
|
{
|
|
auto fid = result.add_face(VI(f(0)), VI(f(1)), VI(f(2)));
|
|
// index of face in source triangle mesh
|
|
int32_t index = static_cast<int32_t>(&f - &F.front());
|
|
face_map[fid] = index;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Covert 2d shape (e.g. Glyph) to CGAL model
|
|
/// </summary>
|
|
/// <param name="shape">2d shape to project</param>
|
|
/// <param name="projection">Define transformation 2d point into 3d</param>
|
|
/// <param name="shape_id">Identify shape</param>
|
|
/// <param name="edge_shape_map_name">Name of property map to store conversion from edge to contour</param>
|
|
/// <param name="face_shape_map_name">Name of property map to store conversion from face to contour</param>
|
|
/// <param name="contour_indices">Identify point on shape contour</param>
|
|
/// <returns>CGAL model of extruded shape</returns>
|
|
CGALMesh to_cgal(const ExPolygons &shape,
|
|
const Slic3r::Emboss::IProjection &projection,
|
|
int32_t shape_id,
|
|
const std::string &edge_shape_map_name,
|
|
const std::string &face_shape_map_name,
|
|
std::vector<ShapesVertexId> &contour_indices)
|
|
{
|
|
CGALMesh result;
|
|
if (shape.empty()) return result;
|
|
|
|
auto edge_shape_map = result.add_property_map<CGALMesh::Edge_index, IntersectingElemnt>(edge_shape_map_name).first;
|
|
auto face_shape_map = result.add_property_map<CGALMesh::Face_index, IntersectingElemnt>(face_shape_map_name).first;
|
|
|
|
std::vector<CGALMesh::Vertex_index> indices;
|
|
auto insert_contour = [&projection, &indices , &result, &contour_indices, &edge_shape_map, &face_shape_map](const Polygon& polygon, int32_t iexpoly, int32_t id) {
|
|
indices.clear();
|
|
indices.reserve(polygon.points.size() * 2);
|
|
size_t num_vertices_old = result.number_of_vertices();
|
|
int32_t vertex_index = static_cast<int32_t>(contour_indices.size());
|
|
contour_indices.push_back({iexpoly, id, int32_t(num_vertices_old) });
|
|
for (const Point& p2 : polygon.points) {
|
|
auto p = projection.create_front_back(p2);
|
|
auto vi = result.add_vertex(typename CGALMesh::Point{ p.first.x(), p.first.y(), p.first.z() });
|
|
assert((size_t)vi == indices.size() + num_vertices_old);
|
|
indices.emplace_back(vi);
|
|
vi = result.add_vertex(typename CGALMesh::Point{ p.second.x(), p.second.y(), p.second.z() });
|
|
assert((size_t)vi == indices.size() + num_vertices_old);
|
|
indices.emplace_back(vi);
|
|
}
|
|
int32_t contour_index = 0;
|
|
for (int32_t i = 0; i < int32_t(indices.size()); i += 2) {
|
|
int32_t j = (i + 2) % int32_t(indices.size());
|
|
auto find_edge = [&result](CGALMesh::Face_index fi, CGALMesh::Vertex_index from, CGALMesh::Vertex_index to) {
|
|
CGALMesh::Halfedge_index hi = result.halfedge(fi);
|
|
for (; result.target(hi) != to; hi = result.next(hi));
|
|
assert(result.source(hi) == from);
|
|
assert(result.target(hi) == to);
|
|
return hi;
|
|
};
|
|
auto fi = result.add_face(indices[i], indices[i + 1], indices[j]);
|
|
edge_shape_map[result.edge(find_edge(fi, indices[i], indices[i + 1]))] =
|
|
IntersectingElemnt{vertex_index, contour_index, IntersectingElemnt::Type::edge_1};
|
|
face_shape_map[fi] =
|
|
IntersectingElemnt{vertex_index, contour_index, IntersectingElemnt::Type::face_1};
|
|
edge_shape_map[result.edge(find_edge(fi, indices[i + 1], indices[j]))] =
|
|
IntersectingElemnt{vertex_index, contour_index, IntersectingElemnt::Type::edge_2};
|
|
face_shape_map[result.add_face(indices[j], indices[i + 1], indices[j + 1])] =
|
|
IntersectingElemnt{vertex_index, contour_index, IntersectingElemnt::Type::face_2};
|
|
++contour_index;
|
|
}
|
|
};
|
|
|
|
size_t count_point = count_points(shape);
|
|
result.reserve(result.number_of_vertices() + 2 * count_point, result.number_of_edges() + 4 * count_point, result.number_of_faces() + 2 * count_point);
|
|
|
|
// Identify polygon
|
|
// (contour_id > 0) are holes
|
|
for (const auto &s : shape) {
|
|
size_t contour_id = 0;
|
|
insert_contour(s.contour, shape_id, contour_id++);
|
|
for (const Polygon &hole : s.holes)
|
|
insert_contour(hole, shape_id, contour_id++);
|
|
++shape_id;
|
|
}
|
|
return result;
|
|
}
|
|
}
|
|
#include "libslic3r/TriangleMesh.hpp"
|
|
|
|
//// 1 ////
|
|
|
|
// Question store(1) Or calculate on demand(2) ??
|
|
// (1) type: vector <vector<vertex indices>>
|
|
// (1) Needs recalculation when merge and propagation togewther with its
|
|
// (2) Could appear surface mistakes(need calc - all half edges)
|
|
// (2) NO need of trace cut outline and connect it with letter conture points
|
|
|
|
/// <summary>
|
|
/// Cut surface shape from source model
|
|
/// </summary>
|
|
/// <param name="source">Input source mesh</param>
|
|
/// <param name="shape">Input 2d shape to cut from surface</param>
|
|
/// <param name="projection">Define transformation from 2d to 3d</param>
|
|
/// <returns>Cutted surface, Its do not represent Volume</returns>
|
|
indexed_triangle_set cut_shape(const indexed_triangle_set &source,
|
|
const ExPolygon &shape,
|
|
const Emboss::IProjection &projection)
|
|
{
|
|
// NOT implemented yet
|
|
return {};
|
|
}
|
|
|
|
/// <summary>
|
|
/// Cut surface shape from source model
|
|
/// </summary>
|
|
/// <param name="source">Input source mesh</param>
|
|
/// <param name="shapes">Input 2d shape to cut from surface</param>
|
|
/// <param name="projection">Define transformation from 2d to 3d</param>
|
|
/// <returns>Cutted surface, Its do not represent Volume</returns>
|
|
indexed_triangle_set cut_shape(const indexed_triangle_set &source,
|
|
const ExPolygons &shapes,
|
|
const Emboss::IProjection &projection)
|
|
{
|
|
indexed_triangle_set result;
|
|
for (const ExPolygon &shape : shapes)
|
|
its_merge(result, cut_shape(source, shape, projection));
|
|
return result;
|
|
}
|
|
|
|
using MyMesh = Slic3r::MeshBoolean::cgal2::CGALMesh;
|
|
|
|
// First Idea //// 1 ////
|
|
// Use source model to modify ONLY surface of text ModelVolume
|
|
|
|
// Second Idea
|
|
// Store original its inside of text configuration[optional]
|
|
// Cause problem with next editation of object -> cut, simplify, Netfabb, Hollow, ...(transform original vertices)
|
|
TEST_CASE("Emboss extrude cut", "[Emboss-Cut]")
|
|
{
|
|
std::string font_path = get_font_filepath();
|
|
unsigned int font_index = 0; // collection
|
|
char letter = '%';
|
|
float flatness = 2.;
|
|
|
|
auto font = Emboss::create_font_file(font_path.c_str());
|
|
REQUIRE(font != nullptr);
|
|
|
|
std::optional<Emboss::Glyph> glyph =
|
|
Emboss::letter2glyph(*font, font_index, letter, flatness);
|
|
REQUIRE(glyph.has_value());
|
|
|
|
ExPolygons shape = glyph->shape;
|
|
REQUIRE(!shape.empty());
|
|
|
|
float z_depth = 50.f;
|
|
Emboss::ProjectZ projection(z_depth);
|
|
|
|
#if 0
|
|
indexed_triangle_set text = Emboss::polygons2model(shape, projection);
|
|
BoundingBoxf3 bbox = bounding_box(text);
|
|
|
|
CHECK(!text.indices.empty());
|
|
#endif
|
|
|
|
auto cube = its_make_cube(782 - 49 + 50, 724 + 10 + 50, 5);
|
|
its_translate(cube, Vec3f(49 - 25, -10 - 25, 2.5));
|
|
auto cube2 = cube;
|
|
// its_translate(cube2, Vec3f(0, 0, 40));
|
|
its_translate(cube2, Vec3f(100, -40, 40));
|
|
its_merge(cube, std::move(cube2));
|
|
|
|
//cube = its_make_sphere(350., 1.);
|
|
//for (auto &face : cube2.indices)
|
|
// for (int i = 0; i < 3; ++ i)
|
|
// face(i) += int(cube.vertices.size());
|
|
//append(cube.vertices, cube2.vertices);
|
|
//append(cube.indices, cube2.indices);
|
|
|
|
using MyMesh = Slic3r::MeshBoolean::cgal2::CGALMesh;
|
|
|
|
// name of CGAL property map for store source object face id - index into its.indices
|
|
std::string face_map_name = "f:face_map";
|
|
std::string face_type_map_name = "f:type";
|
|
// identify glyph for intersected vertex
|
|
std::string vert_shape_map_name = "v:glyph_id";
|
|
MyMesh cgal_object = MeshBoolean::cgal2::to_cgal(cube, face_map_name);
|
|
auto face_map = cgal_object.property_map<MyMesh::Face_index, int32_t>(face_map_name).first;
|
|
auto vert_shape_map = cgal_object.add_property_map<MyMesh::Vertex_index, IntersectingElemnt>(vert_shape_map_name).first;
|
|
|
|
std::string edge_shape_map_name = "e:glyph_id";
|
|
std::string face_shape_map_name = "f:glyph_id";
|
|
std::vector<ShapesVertexId> glyph_contours;
|
|
|
|
MyMesh cgal_shape = MeshBoolean::cgal2::to_cgal(shape, projection, 0, edge_shape_map_name, face_shape_map_name, glyph_contours);
|
|
|
|
auto edge_shape_map = cgal_shape.property_map<MyMesh::Edge_index, IntersectingElemnt>(edge_shape_map_name).first;
|
|
auto face_shape_map = cgal_shape.property_map<MyMesh::Face_index, IntersectingElemnt>(face_shape_map_name).first;
|
|
|
|
// bool map for affected edge
|
|
using d_prop_bool = CGAL::dynamic_edge_property_t<bool>;
|
|
using ecm_it = boost::property_map<MyMesh, d_prop_bool>::SMPM;
|
|
using EcmType = CGAL::internal::Dynamic<MyMesh, ecm_it>;
|
|
EcmType ecm = get(d_prop_bool(), cgal_object);
|
|
|
|
struct Visitor {
|
|
const MyMesh &object;
|
|
const MyMesh &shape;
|
|
// Properties of the shape mesh:
|
|
MyMesh::Property_map<CGAL::SM_Edge_index, IntersectingElemnt> edge_shape_map;
|
|
MyMesh::Property_map<CGAL::SM_Face_index, IntersectingElemnt> face_shape_map;
|
|
// Properties of the object mesh.
|
|
MyMesh::Property_map<CGAL::SM_Face_index, int32_t> face_map;
|
|
MyMesh::Property_map<CGAL::SM_Vertex_index, IntersectingElemnt> vert_shape_map;
|
|
|
|
typedef boost::graph_traits<MyMesh> GT;
|
|
typedef typename GT::face_descriptor face_descriptor;
|
|
typedef typename GT::halfedge_descriptor halfedge_descriptor;
|
|
typedef typename GT::vertex_descriptor vertex_descriptor;
|
|
|
|
int32_t source_face_id = -1;
|
|
void before_subface_creations(face_descriptor f_old, MyMesh& mesh)
|
|
{
|
|
assert(&mesh == &object);
|
|
source_face_id = face_map[f_old];
|
|
}
|
|
// it is called multiple times for one source_face_id
|
|
void after_subface_created(face_descriptor f_new, MyMesh &mesh)
|
|
{
|
|
assert(&mesh == &object);
|
|
assert(source_face_id != -1);
|
|
face_map[f_new] = source_face_id;
|
|
}
|
|
|
|
std::vector<const IntersectingElemnt*> intersection_point_glyph;
|
|
|
|
// Intersecting an edge hh_edge from tm_edge with a face hh_face of tm_face.
|
|
void intersection_point_detected(
|
|
// ID of the intersection point, starting at 0. Ids are consecutive.
|
|
std::size_t i_id,
|
|
// Dimension of a simplex part of face(hh_face) that is intersected by hh_edge:
|
|
// 0 for vertex: target(hh_face)
|
|
// 1 for edge: hh_face
|
|
// 2 for the interior of face: face(hh_face)
|
|
int simplex_dimension,
|
|
// Edge of tm_edge, see edge_source_coplanar_with_face & edge_target_coplanar_with_face whether any vertex of hh_edge is coplanar with face(hh_face).
|
|
halfedge_descriptor hh_edge,
|
|
// Vertex, halfedge or face of tm_face intersected by hh_edge, see comment at simplex_dimension.
|
|
halfedge_descriptor hh_face,
|
|
// Mesh containing hh_edge
|
|
const MyMesh& tm_edge,
|
|
// Mesh containing hh_face
|
|
const MyMesh& tm_face,
|
|
// source(hh_edge) is coplanar with face(hh_face).
|
|
bool edge_source_coplanar_with_face,
|
|
// target(hh_edge) is coplanar with face(hh_face).
|
|
bool edge_target_coplanar_with_face)
|
|
{
|
|
if (i_id <= intersection_point_glyph.size()) {
|
|
intersection_point_glyph.reserve(Slic3r::next_highest_power_of_2(i_id + 1));
|
|
intersection_point_glyph.resize(i_id + 1);
|
|
}
|
|
|
|
const IntersectingElemnt* glyph = nullptr;
|
|
if (&tm_face == &shape) {
|
|
assert(&tm_edge == &object);
|
|
switch (simplex_dimension) {
|
|
case 1:
|
|
// edge x edge intersection
|
|
glyph = &edge_shape_map[shape.edge(hh_face)];
|
|
break;
|
|
case 2:
|
|
// edge x face intersection
|
|
glyph = &face_shape_map[shape.face(hh_face)];
|
|
break;
|
|
default:
|
|
assert(false);
|
|
}
|
|
if (edge_source_coplanar_with_face)
|
|
vert_shape_map[object.source(hh_edge)] = *glyph;
|
|
if (edge_target_coplanar_with_face)
|
|
vert_shape_map[object.target(hh_edge)] = *glyph;
|
|
} else {
|
|
assert(&tm_edge == &shape && &tm_face == &object);
|
|
assert(!edge_source_coplanar_with_face);
|
|
assert(!edge_target_coplanar_with_face);
|
|
glyph = &edge_shape_map[shape.edge(hh_edge)];
|
|
if (simplex_dimension == 0)
|
|
vert_shape_map[object.target(hh_face)] = *glyph;
|
|
}
|
|
intersection_point_glyph[i_id] = glyph;
|
|
}
|
|
|
|
void new_vertex_added(std::size_t node_id, vertex_descriptor vh, const MyMesh &tm)
|
|
{
|
|
assert(&tm == &object);
|
|
assert(node_id < intersection_point_glyph.size());
|
|
const IntersectingElemnt * glyph = intersection_point_glyph[node_id];
|
|
assert(glyph != nullptr);
|
|
assert(glyph->vertex_index != -1);
|
|
assert(glyph->point_index != -1);
|
|
vert_shape_map[vh] = glyph ? *glyph : IntersectingElemnt{};
|
|
}
|
|
|
|
void after_subface_creations(MyMesh&) {}
|
|
void before_subface_created(MyMesh&) {}
|
|
void before_edge_split(halfedge_descriptor /* h */, MyMesh& /* tm */) {}
|
|
void edge_split(halfedge_descriptor /* hnew */, MyMesh& /* tm */) {}
|
|
void after_edge_split() {}
|
|
void add_retriangulation_edge(halfedge_descriptor /* h */, MyMesh& /* tm */) {}
|
|
} visitor{cgal_object, cgal_shape, edge_shape_map, face_shape_map,
|
|
face_map, vert_shape_map};
|
|
|
|
const auto& p = CGAL::Polygon_mesh_processing::parameters::throw_on_self_intersection(false).visitor(visitor).edge_is_constrained_map(ecm);
|
|
const auto& q = CGAL::Polygon_mesh_processing::parameters::do_not_modify(true);
|
|
// CGAL::Polygon_mesh_processing::corefine(cgal_object, cgalcube2, p, p);
|
|
|
|
CGAL::Polygon_mesh_processing::corefine(cgal_object, cgal_shape, p, q);
|
|
|
|
enum class SideType {
|
|
// face inside of the cutted shape
|
|
inside,
|
|
// face outside of the cutted shape
|
|
outside,
|
|
// face without constrained edge (In or Out)
|
|
not_constrained
|
|
};
|
|
auto side_type_map = cgal_object.add_property_map<MyMesh::Face_index, SideType>("f:side").first;
|
|
for (auto fi : cgal_object.faces()) {
|
|
SideType side_type = SideType::not_constrained;
|
|
auto hi_end = cgal_object.halfedge(fi);
|
|
auto hi = hi_end;
|
|
do {
|
|
CGAL::SM_Edge_index edge_index = cgal_object.edge(hi);
|
|
// is edge new created - constrained?
|
|
if (get(ecm, edge_index)) {
|
|
// This face has a constrained edge.
|
|
IntersectingElemnt shape_from = vert_shape_map[cgal_object.source(hi)];
|
|
IntersectingElemnt shape_to = vert_shape_map[cgal_object.target(hi)];
|
|
assert(shape_from.vertex_index != -1);
|
|
assert(shape_from.vertex_index == shape_to.vertex_index);
|
|
assert(shape_from.point_index != -1);
|
|
assert(shape_to.point_index != -1);
|
|
|
|
const ShapesVertexId &vertex_index = glyph_contours[shape_from.vertex_index];
|
|
const ExPolygon &expoly = shape[vertex_index.expoly];
|
|
const Polygon &contour = vertex_index.contour == 0 ? expoly.contour : expoly.holes[vertex_index.contour - 1];
|
|
bool is_inside = false;
|
|
|
|
// 4 type
|
|
// index into contour
|
|
int32_t i_from = shape_from.point_index;
|
|
int32_t i_to = shape_to.point_index;
|
|
if (i_from == i_to && shape_from.type == shape_to.type) {
|
|
|
|
const auto &p = cgal_object.point(cgal_object.target(cgal_object.next(hi)));
|
|
|
|
int i = i_from * 2;
|
|
int j = (i_from + 1 == int(contour.size())) ? 0 : i + 2;
|
|
|
|
i += vertex_index.vertex_base;
|
|
j += vertex_index.vertex_base;
|
|
|
|
auto abcp =
|
|
shape_from.type == IntersectingElemnt::Type::face_1 ?
|
|
CGAL::orientation(
|
|
cgal_shape.point(CGAL::SM_Vertex_index(i)),
|
|
cgal_shape.point(CGAL::SM_Vertex_index(i + 1)),
|
|
cgal_shape.point(CGAL::SM_Vertex_index(j)), p) :
|
|
// shape_from.type == IntersectingElemnt::Type::face_2
|
|
CGAL::orientation(
|
|
cgal_shape.point(CGAL::SM_Vertex_index(j)),
|
|
cgal_shape.point(CGAL::SM_Vertex_index(i + 1)),
|
|
cgal_shape.point(CGAL::SM_Vertex_index(j + 1)),
|
|
p);
|
|
is_inside = abcp == CGAL::POSITIVE;
|
|
} else if (i_from < i_to || (i_from == i_to && shape_from.type < shape_to.type)) {
|
|
bool is_last = i_from == 0 && static_cast<size_t>(i_to + 1) == contour.size();
|
|
if (!is_last) is_inside = true;
|
|
} else { // i_from > i_to || (i_from == i_to && shape_from.type > shape_to.type)
|
|
bool is_last = i_to == 0 && static_cast<size_t>(i_from + 1) == contour.size();
|
|
if (is_last) is_inside = true;
|
|
}
|
|
|
|
if (is_inside) {
|
|
// Is this face oriented towards p or away from p?
|
|
const auto &a = cgal_object.point(cgal_object.source(hi));
|
|
const auto &b = cgal_object.point(cgal_object.target(hi));
|
|
const auto &c = cgal_object.point(cgal_object.target(cgal_object.next(hi)));
|
|
//FIXME prosim nahrad skutecnou projekci.
|
|
//projection.project()
|
|
const auto p = a + MeshBoolean::cgal2::EpicKernel::Vector_3(0, 0, 10);
|
|
auto abcp = CGAL::orientation(a, b, c, p);
|
|
if (abcp == CGAL::POSITIVE)
|
|
side_type = SideType::inside;
|
|
else
|
|
is_inside = false;
|
|
}
|
|
if (!is_inside) side_type = SideType::outside;
|
|
break;
|
|
}
|
|
// next half edge index inside of face
|
|
hi = cgal_object.next(hi);
|
|
} while (hi != hi_end);
|
|
side_type_map[fi] = side_type;
|
|
}
|
|
|
|
// debug output
|
|
auto face_colors = cgal_object.add_property_map<MyMesh::Face_index, CGAL::Color>("f:color").first;
|
|
for (auto fi : cgal_object.faces()) {
|
|
auto &color = face_colors[fi];
|
|
switch (side_type_map[fi]) {
|
|
case SideType::inside: color = CGAL::Color{255, 0, 0}; break;
|
|
case SideType::outside: color = CGAL::Color{255, 0, 255}; break;
|
|
case SideType::not_constrained: color = CGAL::Color{0, 255, 0}; break;
|
|
}
|
|
}
|
|
CGAL::IO::write_OFF("c:\\data\\temp\\constrained.off", cgal_object);
|
|
|
|
// Seed fill the other faces inside the region.
|
|
for (Visitor::face_descriptor fi : cgal_object.faces()) {
|
|
if (side_type_map[fi] != SideType::not_constrained) continue;
|
|
|
|
// check if neighbor face is inside
|
|
Visitor::halfedge_descriptor hi = cgal_object.halfedge(fi);
|
|
Visitor::halfedge_descriptor hi_end = hi;
|
|
|
|
bool has_inside_neighbor = false;
|
|
std::vector<MyMesh::Face_index> queue;
|
|
do {
|
|
Visitor::face_descriptor fi_opposite = cgal_object.face(cgal_object.opposite(hi));
|
|
SideType side = side_type_map[fi_opposite];
|
|
if (side == SideType::inside) {
|
|
has_inside_neighbor = true;
|
|
} else if (side == SideType::not_constrained) {
|
|
queue.emplace_back(fi_opposite);
|
|
}
|
|
hi = cgal_object.next(hi);
|
|
} while (hi != hi_end);
|
|
if (!has_inside_neighbor) continue;
|
|
side_type_map[fi] = SideType::inside;
|
|
while (!queue.empty()) {
|
|
Visitor::face_descriptor fi = queue.back();
|
|
queue.pop_back();
|
|
// Do not fill twice
|
|
if (side_type_map[fi] == SideType::inside) continue;
|
|
side_type_map[fi] = SideType::inside;
|
|
|
|
// check neighbor triangle
|
|
Visitor::halfedge_descriptor hi = cgal_object.halfedge(fi);
|
|
Visitor::halfedge_descriptor hi_end = hi;
|
|
do {
|
|
Visitor::face_descriptor fi_opposite = cgal_object.face(cgal_object.opposite(hi));
|
|
SideType side = side_type_map[fi_opposite];
|
|
if (side == SideType::not_constrained)
|
|
queue.emplace_back(fi_opposite);
|
|
hi = cgal_object.next(hi);
|
|
} while (hi != hi_end);
|
|
}
|
|
}
|
|
|
|
// debug output
|
|
for (auto fi : cgal_object.faces()) {
|
|
auto &color = face_colors[fi];
|
|
switch (side_type_map[fi]) {
|
|
case SideType::inside: color = CGAL::Color{255, 0, 0}; break;
|
|
case SideType::outside: color = CGAL::Color{255, 0, 255}; break;
|
|
case SideType::not_constrained: color = CGAL::Color{0, 255, 0}; break;
|
|
}
|
|
}
|
|
CGAL::IO::write_OFF("c:\\data\\temp\\filled.off", cgal_object);
|
|
|
|
// Mapping of its_extruded faces to source faces.
|
|
enum class FaceState : int8_t {
|
|
Unknown = -1,
|
|
Unmarked = -2,
|
|
UnmarkedSplit = -3,
|
|
Marked = -4,
|
|
MarkedSplit = -5,
|
|
UnmarkedEmitted = -6,
|
|
};
|
|
std::vector<FaceState> face_states(cube.indices.size(), FaceState::Unknown);
|
|
for (auto fi_seed : cgal_object.faces()) {
|
|
FaceState &state = face_states[face_map[fi_seed]];
|
|
bool is_face_inside = side_type_map[fi_seed] == SideType::inside;
|
|
switch (state) {
|
|
case FaceState::Unknown:
|
|
state = is_face_inside ? FaceState::Marked : FaceState::Unmarked;
|
|
break;
|
|
case FaceState::Unmarked:
|
|
case FaceState::UnmarkedSplit:
|
|
state = is_face_inside ? FaceState::MarkedSplit : FaceState::UnmarkedSplit;
|
|
break;
|
|
case FaceState::Marked:
|
|
case FaceState::MarkedSplit:
|
|
state = FaceState::MarkedSplit;
|
|
break;
|
|
default:
|
|
assert(false);
|
|
}
|
|
}
|
|
|
|
indexed_triangle_set its_extruded;
|
|
its_extruded.indices.reserve(cgal_object.number_of_faces());
|
|
its_extruded.vertices.reserve(cgal_object.number_of_vertices());
|
|
// Mapping of its_extruded vertices (original and offsetted) to cgalcuble's vertices.
|
|
std::vector<std::pair<int32_t, int32_t>> map_vertices(cgal_object.number_of_vertices(), std::pair<int32_t, int32_t>{-1, -1});
|
|
|
|
Vec3f extrude_dir { 0, 0, 5.f };
|
|
for (auto fi : cgal_object.faces()) {
|
|
const int32_t source_face_id = face_map[fi];
|
|
const FaceState state = face_states[source_face_id];
|
|
assert(state == FaceState::Unmarked || state == FaceState::UnmarkedSplit || state == FaceState::UnmarkedEmitted ||
|
|
state == FaceState::Marked || state == FaceState::MarkedSplit);
|
|
if (state == FaceState::UnmarkedEmitted) continue; // Already emitted.
|
|
|
|
if (state == FaceState::Unmarked ||
|
|
state == FaceState::UnmarkedSplit) {
|
|
// Just copy the unsplit source face.
|
|
const Vec3i source_vertices = cube.indices[source_face_id];
|
|
Vec3i target_vertices;
|
|
for (int i = 0; i < 3; ++i) {
|
|
target_vertices(i) = map_vertices[source_vertices(i)].first;
|
|
if (target_vertices(i) == -1) {
|
|
map_vertices[source_vertices(i)].first = target_vertices(i) = int(its_extruded.vertices.size());
|
|
its_extruded.vertices.emplace_back(cube.vertices[source_vertices(i)]);
|
|
}
|
|
}
|
|
its_extruded.indices.emplace_back(target_vertices);
|
|
face_states[source_face_id] = FaceState::UnmarkedEmitted;
|
|
continue; // revert modification
|
|
}
|
|
|
|
auto hi = cgal_object.halfedge(fi);
|
|
auto hi_prev = cgal_object.prev(hi);
|
|
auto hi_next = cgal_object.next(hi);
|
|
const Vec3i source_vertices{
|
|
int((std::size_t)cgal_object.target(hi)),
|
|
int((std::size_t)cgal_object.target(hi_next)),
|
|
int((std::size_t)cgal_object.target(hi_prev)) };
|
|
Vec3i target_vertices;
|
|
if (side_type_map[fi] != SideType::inside) {
|
|
// Copy the face.
|
|
Vec3i target_vertices;
|
|
for (int i = 0; i < 3; ++ i) {
|
|
target_vertices(i) = map_vertices[source_vertices(i)].first;
|
|
if (target_vertices(i) == -1) {
|
|
map_vertices[source_vertices(i)].first = target_vertices(i) = int(its_extruded.vertices.size());
|
|
const auto &p = cgal_object.point(cgal_object.target(hi));
|
|
its_extruded.vertices.emplace_back(p.x(), p.y(), p.z());
|
|
}
|
|
hi = cgal_object.next(hi);
|
|
}
|
|
its_extruded.indices.emplace_back(target_vertices);
|
|
continue; // copy splitted triangle
|
|
}
|
|
|
|
// Extrude the face. Neighbor edges separating extruded face from
|
|
// non-extruded face will be extruded.
|
|
bool boundary_vertex[3] = {false, false, false};
|
|
Vec3i target_vertices_extruded{-1, -1, -1};
|
|
for (int i = 0; i < 3; ++i) {
|
|
if (side_type_map[cgal_object.face(cgal_object.opposite(hi))] != SideType::inside)
|
|
// Edge separating extruded / non-extruded region.
|
|
boundary_vertex[i] = true;
|
|
hi = cgal_object.next(hi);
|
|
}
|
|
|
|
for (int i = 0; i < 3; ++i) {
|
|
target_vertices_extruded(i) = map_vertices[source_vertices(i)].second;
|
|
if (target_vertices_extruded(i) == -1) {
|
|
map_vertices[source_vertices(i)].second =
|
|
target_vertices_extruded(i) = int(
|
|
its_extruded.vertices.size());
|
|
const auto &p = cgal_object.point(cgal_object.target(hi));
|
|
its_extruded.vertices.emplace_back(
|
|
Vec3f{float(p.x()), float(p.y()), float(p.z())} +
|
|
extrude_dir);
|
|
}
|
|
if (boundary_vertex[i]) {
|
|
target_vertices(i) = map_vertices[source_vertices(i)].first;
|
|
if (target_vertices(i) == -1) {
|
|
map_vertices[source_vertices(i)].first = target_vertices(
|
|
i) = int(its_extruded.vertices.size());
|
|
const auto &p = cgal_object.point(cgal_object.target(hi));
|
|
its_extruded.vertices.emplace_back(p.x(), p.y(), p.z());
|
|
}
|
|
}
|
|
hi = cgal_object.next(hi);
|
|
}
|
|
its_extruded.indices.emplace_back(target_vertices_extruded);
|
|
// Add the sides.
|
|
for (int i = 0; i < 3; ++i) {
|
|
int j = (i + 1) % 3;
|
|
assert(target_vertices_extruded[i] != -1 &&
|
|
target_vertices_extruded[j] != -1);
|
|
if (boundary_vertex[i] && boundary_vertex[j]) {
|
|
assert(target_vertices[i] != -1 && target_vertices[j] != -1);
|
|
its_extruded.indices.emplace_back(
|
|
Vec3i{target_vertices[i], target_vertices[j],
|
|
target_vertices_extruded[i]});
|
|
its_extruded.indices.emplace_back(
|
|
Vec3i{target_vertices_extruded[i], target_vertices[j],
|
|
target_vertices_extruded[j]});
|
|
}
|
|
}
|
|
}
|
|
|
|
its_write_obj(its_extruded, "c:\\data\\temp\\text-extruded.obj");
|
|
|
|
indexed_triangle_set edges_its;
|
|
std::vector<Vec3f> edges_its_colors;
|
|
for (auto ei : cgal_object.edges())
|
|
if (cgal_object.is_valid(ei)) {
|
|
const auto &p1 = cgal_object.point(cgal_object.vertex(ei, 0));
|
|
const auto &p2 = cgal_object.point(cgal_object.vertex(ei, 1));
|
|
bool constrained = get(ecm, ei);
|
|
Vec3f color = constrained ? Vec3f{ 1.f, 0, 0 } : Vec3f{ 0, 1., 0 };
|
|
edges_its.indices.emplace_back(Vec3i(edges_its.vertices.size(), edges_its.vertices.size() + 1, edges_its.vertices.size() + 2));
|
|
edges_its.vertices.emplace_back(Vec3f(p1.x(), p1.y(), p1.z()));
|
|
edges_its.vertices.emplace_back(Vec3f(p2.x(), p2.y(), p2.z()));
|
|
edges_its.vertices.emplace_back(Vec3f(p2.x(), p2.y(), p2.z() + 0.001));
|
|
edges_its_colors.emplace_back(color);
|
|
edges_its_colors.emplace_back(color);
|
|
edges_its_colors.emplace_back(color);
|
|
}
|
|
its_write_obj(edges_its, edges_its_colors, "c:\\data\\temp\\corefined-edges.obj");
|
|
|
|
// MeshBoolean::cgal::minus(cube, cube2);
|
|
|
|
// REQUIRE(!MeshBoolean::cgal::does_self_intersect(cube));
|
|
}
|