diff options
author | enricoturri1966 <enricoturri@seznam.cz> | 2020-05-29 13:29:24 +0300 |
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committer | enricoturri1966 <enricoturri@seznam.cz> | 2020-05-29 13:29:24 +0300 |
commit | 71db69ef41dfff069215eb6955919be6febd606b (patch) | |
tree | ab4e56255c9e99802195d2c5e73a11b30703b6d6 /tests | |
parent | dcec684cc7fe8979d25b726f6bdf560353139691 (diff) | |
parent | 21de9d23eceb0ba32acfe356a986b90eb32ed360 (diff) |
Merge branch 'master' of https://github.com/prusa3d/PrusaSlicer into et_gcode_viewer
Diffstat (limited to 'tests')
-rw-r--r-- | tests/libslic3r/CMakeLists.txt | 9 | ||||
-rw-r--r-- | tests/libslic3r/test_voronoi.cpp | 1590 |
2 files changed, 1595 insertions, 4 deletions
diff --git a/tests/libslic3r/CMakeLists.txt b/tests/libslic3r/CMakeLists.txt index 7f86144cd..5a1e8f18b 100644 --- a/tests/libslic3r/CMakeLists.txt +++ b/tests/libslic3r/CMakeLists.txt @@ -12,10 +12,11 @@ add_executable(${_TEST_NAME}_tests test_placeholder_parser.cpp test_polygon.cpp test_stl.cpp - test_meshsimplify.cpp - test_meshboolean.cpp - test_marchingsquares.cpp - test_timeutils.cpp + test_meshsimplify.cpp + test_meshboolean.cpp + test_marchingsquares.cpp + test_timeutils.cpp + test_voronoi.cpp ) if (TARGET OpenVDB::openvdb) diff --git a/tests/libslic3r/test_voronoi.cpp b/tests/libslic3r/test_voronoi.cpp new file mode 100644 index 000000000..4615a93ae --- /dev/null +++ b/tests/libslic3r/test_voronoi.cpp @@ -0,0 +1,1590 @@ +#include <catch2/catch.hpp> +#include <test_utils.hpp> + +#include <stack> + +#include <libslic3r/Polygon.hpp> +#include <libslic3r/Polyline.hpp> +#include <libslic3r/EdgeGrid.hpp> +#include <libslic3r/Geometry.hpp> + +#define BOOST_VORONOI_USE_GMP 1 +#include "boost/polygon/voronoi.hpp" + +using boost::polygon::voronoi_builder; +using boost::polygon::voronoi_diagram; + +using namespace Slic3r; + +struct VD : public boost::polygon::voronoi_diagram<double> { + typedef double coord_type; + typedef boost::polygon::point_data<coordinate_type> point_type; + typedef boost::polygon::segment_data<coordinate_type> segment_type; + typedef boost::polygon::rectangle_data<coordinate_type> rect_type; +}; + +// #define VORONOI_DEBUG_OUT + +#ifdef VORONOI_DEBUG_OUT +#include <libslic3r/SVG.hpp> +#endif + +#ifdef VORONOI_DEBUG_OUT +namespace boost { namespace polygon { + +// The following code for the visualization of the boost Voronoi diagram is based on: +// +// Boost.Polygon library voronoi_graphic_utils.hpp header file +// Copyright Andrii Sydorchuk 2010-2012. +// Distributed under the Boost Software License, Version 1.0. +// (See accompanying file LICENSE_1_0.txt or copy at +// http://www.boost.org/LICENSE_1_0.txt) +template <typename CT> +class voronoi_visual_utils { + public: + // Discretize parabolic Voronoi edge. + // Parabolic Voronoi edges are always formed by one point and one segment + // from the initial input set. + // + // Args: + // point: input point. + // segment: input segment. + // max_dist: maximum discretization distance. + // discretization: point discretization of the given Voronoi edge. + // + // Template arguments: + // InCT: coordinate type of the input geometries (usually integer). + // Point: point type, should model point concept. + // Segment: segment type, should model segment concept. + // + // Important: + // discretization should contain both edge endpoints initially. + template <class InCT1, class InCT2, + template<class> class Point, + template<class> class Segment> + static + typename enable_if< + typename gtl_and< + typename gtl_if< + typename is_point_concept< + typename geometry_concept< Point<InCT1> >::type + >::type + >::type, + typename gtl_if< + typename is_segment_concept< + typename geometry_concept< Segment<InCT2> >::type + >::type + >::type + >::type, + void + >::type discretize( + const Point<InCT1>& point, + const Segment<InCT2>& segment, + const CT max_dist, + std::vector< Point<CT> >* discretization) { + // Apply the linear transformation to move start point of the segment to + // the point with coordinates (0, 0) and the direction of the segment to + // coincide the positive direction of the x-axis. + CT segm_vec_x = cast(x(high(segment))) - cast(x(low(segment))); + CT segm_vec_y = cast(y(high(segment))) - cast(y(low(segment))); + CT sqr_segment_length = segm_vec_x * segm_vec_x + segm_vec_y * segm_vec_y; + + // Compute x-coordinates of the endpoints of the edge + // in the transformed space. + CT projection_start = sqr_segment_length * + get_point_projection((*discretization)[0], segment); + CT projection_end = sqr_segment_length * + get_point_projection((*discretization)[1], segment); + + // Compute parabola parameters in the transformed space. + // Parabola has next representation: + // f(x) = ((x-rot_x)^2 + rot_y^2) / (2.0*rot_y). + CT point_vec_x = cast(x(point)) - cast(x(low(segment))); + CT point_vec_y = cast(y(point)) - cast(y(low(segment))); + CT rot_x = segm_vec_x * point_vec_x + segm_vec_y * point_vec_y; + CT rot_y = segm_vec_x * point_vec_y - segm_vec_y * point_vec_x; + + // Save the last point. + Point<CT> last_point = (*discretization)[1]; + discretization->pop_back(); + + // Use stack to avoid recursion. + std::stack<CT> point_stack; + point_stack.push(projection_end); + CT cur_x = projection_start; + CT cur_y = parabola_y(cur_x, rot_x, rot_y); + + // Adjust max_dist parameter in the transformed space. + const CT max_dist_transformed = max_dist * max_dist * sqr_segment_length; + while (!point_stack.empty()) { + CT new_x = point_stack.top(); + CT new_y = parabola_y(new_x, rot_x, rot_y); + + // Compute coordinates of the point of the parabola that is + // furthest from the current line segment. + CT mid_x = (new_y - cur_y) / (new_x - cur_x) * rot_y + rot_x; + CT mid_y = parabola_y(mid_x, rot_x, rot_y); + + // Compute maximum distance between the given parabolic arc + // and line segment that discretize it. + CT dist = (new_y - cur_y) * (mid_x - cur_x) - + (new_x - cur_x) * (mid_y - cur_y); + dist = dist * dist / ((new_y - cur_y) * (new_y - cur_y) + + (new_x - cur_x) * (new_x - cur_x)); + if (dist <= max_dist_transformed) { + // Distance between parabola and line segment is less than max_dist. + point_stack.pop(); + CT inter_x = (segm_vec_x * new_x - segm_vec_y * new_y) / + sqr_segment_length + cast(x(low(segment))); + CT inter_y = (segm_vec_x * new_y + segm_vec_y * new_x) / + sqr_segment_length + cast(y(low(segment))); + discretization->push_back(Point<CT>(inter_x, inter_y)); + cur_x = new_x; + cur_y = new_y; + } else { + point_stack.push(mid_x); + } + } + + // Update last point. + discretization->back() = last_point; + } + + private: + // Compute y(x) = ((x - a) * (x - a) + b * b) / (2 * b). + static CT parabola_y(CT x, CT a, CT b) { + return ((x - a) * (x - a) + b * b) / (b + b); + } + + // Get normalized length of the distance between: + // 1) point projection onto the segment + // 2) start point of the segment + // Return this length divided by the segment length. This is made to avoid + // sqrt computation during transformation from the initial space to the + // transformed one and vice versa. The assumption is made that projection of + // the point lies between the start-point and endpoint of the segment. + template <class InCT, + template<class> class Point, + template<class> class Segment> + static + typename enable_if< + typename gtl_and< + typename gtl_if< + typename is_point_concept< + typename geometry_concept< Point<int> >::type + >::type + >::type, + typename gtl_if< + typename is_segment_concept< + typename geometry_concept< Segment<long> >::type + >::type + >::type + >::type, + CT + >::type get_point_projection( + const Point<CT>& point, const Segment<InCT>& segment) { + CT segment_vec_x = cast(x(high(segment))) - cast(x(low(segment))); + CT segment_vec_y = cast(y(high(segment))) - cast(y(low(segment))); + CT point_vec_x = x(point) - cast(x(low(segment))); + CT point_vec_y = y(point) - cast(y(low(segment))); + CT sqr_segment_length = + segment_vec_x * segment_vec_x + segment_vec_y * segment_vec_y; + CT vec_dot = segment_vec_x * point_vec_x + segment_vec_y * point_vec_y; + return vec_dot / sqr_segment_length; + } + + template <typename InCT> + static CT cast(const InCT& value) { + return static_cast<CT>(value); + } +}; + +} } // namespace boost::polygon + +// The following code for the visualization of the boost Voronoi diagram is based on: +// +// Boost.Polygon library voronoi_visualizer.cpp file +// Copyright Andrii Sydorchuk 2010-2012. +// Distributed under the Boost Software License, Version 1.0. +// (See accompanying file LICENSE_1_0.txt or copy at +// http://www.boost.org/LICENSE_1_0.txt) +namespace Voronoi { namespace Internal { + + typedef double coordinate_type; + typedef boost::polygon::point_data<coordinate_type> point_type; + typedef boost::polygon::segment_data<coordinate_type> segment_type; + typedef boost::polygon::rectangle_data<coordinate_type> rect_type; + typedef boost::polygon::voronoi_diagram<coordinate_type> VD; + typedef VD::cell_type cell_type; + typedef VD::cell_type::source_index_type source_index_type; + typedef VD::cell_type::source_category_type source_category_type; + typedef VD::edge_type edge_type; + typedef VD::cell_container_type cell_container_type; + typedef VD::cell_container_type vertex_container_type; + typedef VD::edge_container_type edge_container_type; + typedef VD::const_cell_iterator const_cell_iterator; + typedef VD::const_vertex_iterator const_vertex_iterator; + typedef VD::const_edge_iterator const_edge_iterator; + + static const std::size_t EXTERNAL_COLOR = 1; + + inline void color_exterior(const VD::edge_type* edge) + { + if (edge->color() == EXTERNAL_COLOR) + return; + edge->color(EXTERNAL_COLOR); + edge->twin()->color(EXTERNAL_COLOR); + const VD::vertex_type* v = edge->vertex1(); + if (v == NULL || !edge->is_primary()) + return; + v->color(EXTERNAL_COLOR); + const VD::edge_type* e = v->incident_edge(); + do { + color_exterior(e); + e = e->rot_next(); + } while (e != v->incident_edge()); + } + + inline point_type retrieve_point(const Points &points, const std::vector<segment_type> &segments, const cell_type& cell) + { + assert(cell.source_category() == boost::polygon::SOURCE_CATEGORY_SEGMENT_START_POINT || cell.source_category() == boost::polygon::SOURCE_CATEGORY_SEGMENT_END_POINT || + cell.source_category() == boost::polygon::SOURCE_CATEGORY_SINGLE_POINT); + return cell.source_category() == boost::polygon::SOURCE_CATEGORY_SINGLE_POINT ? + Voronoi::Internal::point_type(double(points[cell.source_index()].x()), double(points[cell.source_index()].y())) : + (cell.source_category() == boost::polygon::SOURCE_CATEGORY_SEGMENT_START_POINT) ? + low(segments[cell.source_index()]) : high(segments[cell.source_index()]); + } + + inline void clip_infinite_edge(const Points &points, const std::vector<segment_type> &segments, const edge_type& edge, coordinate_type bbox_max_size, std::vector<point_type>* clipped_edge) + { + const cell_type& cell1 = *edge.cell(); + const cell_type& cell2 = *edge.twin()->cell(); + point_type origin, direction; + // Infinite edges could not be created by two segment sites. + if (! cell1.contains_point() && ! cell2.contains_point()) { + printf("Error! clip_infinite_edge - infinite edge separates two segment cells\n"); + return; + } + if (cell1.contains_point() && cell2.contains_point()) { + point_type p1 = retrieve_point(points, segments, cell1); + point_type p2 = retrieve_point(points, segments, cell2); + origin.x((p1.x() + p2.x()) * 0.5); + origin.y((p1.y() + p2.y()) * 0.5); + direction.x(p1.y() - p2.y()); + direction.y(p2.x() - p1.x()); + } else { + origin = cell1.contains_segment() ? retrieve_point(points, segments, cell2) : retrieve_point(points, segments, cell1); + segment_type segment = cell1.contains_segment() ? segments[cell1.source_index()] : segments[cell2.source_index()]; + coordinate_type dx = high(segment).x() - low(segment).x(); + coordinate_type dy = high(segment).y() - low(segment).y(); + if ((low(segment) == origin) ^ cell1.contains_point()) { + direction.x(dy); + direction.y(-dx); + } else { + direction.x(-dy); + direction.y(dx); + } + } + coordinate_type koef = bbox_max_size / (std::max)(fabs(direction.x()), fabs(direction.y())); + if (edge.vertex0() == NULL) { + clipped_edge->push_back(point_type( + origin.x() - direction.x() * koef, + origin.y() - direction.y() * koef)); + } else { + clipped_edge->push_back( + point_type(edge.vertex0()->x(), edge.vertex0()->y())); + } + if (edge.vertex1() == NULL) { + clipped_edge->push_back(point_type( + origin.x() + direction.x() * koef, + origin.y() + direction.y() * koef)); + } else { + clipped_edge->push_back( + point_type(edge.vertex1()->x(), edge.vertex1()->y())); + } + } + + inline void sample_curved_edge(const Points &points, const std::vector<segment_type> &segments, const edge_type& edge, std::vector<point_type> &sampled_edge, coordinate_type max_dist) + { + point_type point = edge.cell()->contains_point() ? + retrieve_point(points, segments, *edge.cell()) : + retrieve_point(points, segments, *edge.twin()->cell()); + segment_type segment = edge.cell()->contains_point() ? + segments[edge.twin()->cell()->source_index()] : + segments[edge.cell()->source_index()]; + ::boost::polygon::voronoi_visual_utils<coordinate_type>::discretize(point, segment, max_dist, &sampled_edge); + } + +} /* namespace Internal */ } // namespace Voronoi + +static inline void dump_voronoi_to_svg( + const char *path, + /* const */ VD &vd, + const Points &points, + const Lines &lines, + const double scale = 0.7) // 0.2? +{ + const std::string inputSegmentPointColor = "lightseagreen"; + const coord_t inputSegmentPointRadius = coord_t(0.09 * scale / SCALING_FACTOR); + const std::string inputSegmentColor = "lightseagreen"; + const coord_t inputSegmentLineWidth = coord_t(0.03 * scale / SCALING_FACTOR); + + const std::string voronoiPointColor = "black"; + const coord_t voronoiPointRadius = coord_t(0.06 * scale / SCALING_FACTOR); + const std::string voronoiLineColorPrimary = "black"; + const std::string voronoiLineColorSecondary = "green"; + const std::string voronoiArcColor = "red"; + const coord_t voronoiLineWidth = coord_t(0.02 * scale / SCALING_FACTOR); + + const bool internalEdgesOnly = false; + const bool primaryEdgesOnly = false; + + BoundingBox bbox; + bbox.merge(get_extents(points)); + bbox.merge(get_extents(lines)); + bbox.min -= (0.01 * bbox.size().cast<double>()).cast<coord_t>(); + bbox.max += (0.01 * bbox.size().cast<double>()).cast<coord_t>(); + + ::Slic3r::SVG svg(path, bbox); + +// bbox.scale(1.2); + // For clipping of half-lines to some reasonable value. + // The line will then be clipped by the SVG viewer anyway. + const double bbox_dim_max = double(std::max(bbox.size().x(), bbox.size().y())); + // For the discretization of the Voronoi parabolic segments. + const double discretization_step = 0.05 * bbox_dim_max; + + // Make a copy of the input segments with the double type. + std::vector<Voronoi::Internal::segment_type> segments; + for (Lines::const_iterator it = lines.begin(); it != lines.end(); ++ it) + segments.push_back(Voronoi::Internal::segment_type( + Voronoi::Internal::point_type(double(it->a(0)), double(it->a(1))), + Voronoi::Internal::point_type(double(it->b(0)), double(it->b(1))))); + + // Color exterior edges. + for (boost::polygon::voronoi_diagram<double>::const_edge_iterator it = vd.edges().begin(); it != vd.edges().end(); ++it) + if (!it->is_finite()) + Voronoi::Internal::color_exterior(&(*it)); + + // Draw the end points of the input polygon. + for (Lines::const_iterator it = lines.begin(); it != lines.end(); ++it) { + svg.draw(it->a, inputSegmentPointColor, inputSegmentPointRadius); + svg.draw(it->b, inputSegmentPointColor, inputSegmentPointRadius); + } + // Draw the input polygon. + for (Lines::const_iterator it = lines.begin(); it != lines.end(); ++it) + svg.draw(Line(Point(coord_t(it->a(0)), coord_t(it->a(1))), Point(coord_t(it->b(0)), coord_t(it->b(1)))), inputSegmentColor, inputSegmentLineWidth); + +#if 1 + // Draw voronoi vertices. + for (boost::polygon::voronoi_diagram<double>::const_vertex_iterator it = vd.vertices().begin(); it != vd.vertices().end(); ++it) + if (! internalEdgesOnly || it->color() != Voronoi::Internal::EXTERNAL_COLOR) + svg.draw(Point(coord_t(it->x()), coord_t(it->y())), voronoiPointColor, voronoiPointRadius); + + for (boost::polygon::voronoi_diagram<double>::const_edge_iterator it = vd.edges().begin(); it != vd.edges().end(); ++it) { + if (primaryEdgesOnly && !it->is_primary()) + continue; + if (internalEdgesOnly && (it->color() == Voronoi::Internal::EXTERNAL_COLOR)) + continue; + std::vector<Voronoi::Internal::point_type> samples; + std::string color = voronoiLineColorPrimary; + if (!it->is_finite()) { + Voronoi::Internal::clip_infinite_edge(points, segments, *it, bbox_dim_max, &samples); + if (! it->is_primary()) + color = voronoiLineColorSecondary; + } else { + // Store both points of the segment into samples. sample_curved_edge will split the initial line + // until the discretization_step is reached. + samples.push_back(Voronoi::Internal::point_type(it->vertex0()->x(), it->vertex0()->y())); + samples.push_back(Voronoi::Internal::point_type(it->vertex1()->x(), it->vertex1()->y())); + if (it->is_curved()) { + Voronoi::Internal::sample_curved_edge(points, segments, *it, samples, discretization_step); + color = voronoiArcColor; + } else if (! it->is_primary()) + color = voronoiLineColorSecondary; + } + for (std::size_t i = 0; i + 1 < samples.size(); ++i) + svg.draw(Line(Point(coord_t(samples[i].x()), coord_t(samples[i].y())), Point(coord_t(samples[i+1].x()), coord_t(samples[i+1].y()))), color, voronoiLineWidth); + } +#endif + + svg.Close(); +} +#endif + +// https://svn.boost.org/trac10/ticket/12067 +// This bug seems to be confirmed. +// Vojtech supposes that there may be no Voronoi edges produced for +// the 1st and last sweep line positions. +TEST_CASE("Voronoi missing edges - points 12067", "[Voronoi]") +{ + Points pts { + { -10, -20 }, + { 10, -20 }, + { 5, 0 }, + { 10, 20 }, + { -10, 20 }, + { -5, 0 } + }; + + // Construction of the Voronoi Diagram. + VD vd; + construct_voronoi(pts.begin(), pts.end(), &vd); + +#ifdef VORONOI_DEBUG_OUT + dump_voronoi_to_svg(debug_out_path("voronoi-pts.svg").c_str(), + vd, pts, Lines()); +#endif + +// REQUIRE(closest_point.z() == Approx(1.)); +} + +// https://svn.boost.org/trac10/ticket/12707 +// This issue is confirmed, there are no self intersections in the polygon. +// A minimal test case is created at the end of this test, +// a new issue opened with the minimal test case: +// https://github.com/boostorg/polygon/issues/43 +TEST_CASE("Voronoi missing edges - Alessandro gapfill 12707", "[Voronoi]") +{ + Lines lines0 { + { { 42127548, 699996}, { 42127548, 10135750 } }, + { { 42127548, 10135750}, { 50487352, 10135750 } }, + { { 50487352, 10135750}, { 50487352, 699995 } }, + { { 50487352, 699995}, { 51187348, 0 } }, + { { 51187348, 0}, { 64325952, 0 } }, + { { 64325952, 0}, { 64325952, 699996 } }, + { { 64325952, 699996}, { 51187348, 699996 } }, + { { 51187348, 699996}, { 51187348, 10835701 } }, + { { 51187348, 10835701}, { 41427552, 10835701 } }, + { { 41427552, 10835701}, { 41427552, 699996 } }, + { { 41427552, 699996}, { 28664848, 699996 } }, + { { 28664848, 699996}, { 28664848, 10835701 } }, + { { 28664848, 10835701}, { 19280052, 10835701 } }, + { { 19280052, 10835701}, { 27964852, 699996 } }, + { { 27964852, 699996}, { 28664848, 0 } }, + { { 28664848, 0}, { 41427551, 0 } }, + { { 41427551, 0}, { 42127548, 699996 } } + }; + + Lines lines1 { + { { 42127548, 699996}, { 42127548, 10135750 } }, + { { 42127548, 10135750}, { 50487352, 10135750 } }, + { { 50487352, 10135750}, { 50487352, 699995 } }, + { { 50487352, 699995}, { 51187348, 0 } }, + { { 51187348, 0}, { 51187348, 10835701 } }, + { { 51187348, 10835701}, { 41427552, 10835701 } }, + { { 41427552, 10835701}, { 41427552, 699996 } }, + { { 41427552, 699996}, { 28664848, 699996 } }, + { { 28664848, 699996}, { 28664848, 10835701 } }, + { { 28664848, 10835701}, { 19280052, 10835701 } }, + { { 19280052, 10835701}, { 27964852, 699996 } }, + { { 27964852, 699996}, { 28664848, 0 } }, + { { 28664848, 0}, { 41427551, 0 } }, + { { 41427551, 0}, { 42127548, 699996 } } + }; + + Lines lines2 { + { { 42127548, 699996}, { 42127548, 10135750 } }, + { { 42127548, 10135750}, { 50487352, 10135750 } }, + { { 50487352, 10135750}, { 50487352, 699995 } }, + { { 50487352, 699995}, { 51187348, 0 } }, + { { 51187348, 0}, { 51187348, 10835701 } }, + { { 51187348, 10835701}, { 41427552, 10835701 } }, + { { 41427552, 10835701}, { 41427552, 699996 } }, + { { 41427552, 699996}, { 28664848, 699996 } }, + { { 28664848, 699996}, { 28664848, 10835701 } }, + { { 28664848, 10835701}, { 19280052, 10835701 } }, + { { 19280052, 10835701}, { 28664848, 0 } }, + { { 28664848, 0}, { 41427551, 0 } }, + { { 41427551, 0}, { 42127548, 699996 } } + }; + + Lines lines3 { + { { 42127548, 699996}, { 42127548, 10135750 } }, + { { 42127548, 10135750}, { 50487352, 10135750 } }, + { { 50487352, 10135750}, { 50487352, 699995 } }, + { { 50487352, 699995}, { 51187348, 0 } }, + { { 51187348, 0}, { 51187348, 10835701 } }, + { { 51187348, 10835701}, { 41427552, 10835701 } }, + { { 41427552, 10835701}, { 41427552, 699996 } }, + { { 41427552, 699996}, { 41427551, 0 } }, + { { 41427551, 0}, { 42127548, 699996 } } + }; + + Lines lines4 { + { { 42127548, 699996}, { 42127548, 10135750 } }, + { { 42127548, 10135750}, { 50487352, 10135750 } }, + { { 50487352, 10135750}, { 50487352, 699995 } }, + { { 50487352, 699995}, { 51187348, 0 } }, + { { 51187348, 0}, { 51187348, 10835701 } }, + { { 51187348, 10835701}, { 41427552, 10835701 } }, + { { 41427552, 10835701}, { 41427551, 0 } }, + { { 41427551, 0}, { 42127548, 699996 } } + }; + + Lines lines = to_lines(Polygon { + { 0, 10000000}, + { 700000, 1}, // it has to be 1, higher number, zero or -1 work. + { 700000, 9000000}, + { 9100000, 9000000}, + { 9100000, 0}, + {10000000, 10000000} + }); + + Polygon poly; + std::mt19937 gen; + std::uniform_int_distribution<size_t> dist(-100, 100); + for (size_t i = 0; i < lines.size(); ++ i) { + Line &l1 = lines[i]; + Line &l2 = lines[(i + 1) % lines.size()]; + REQUIRE(l1.b.x() == l2.a.x()); + REQUIRE(l1.b.y() == l2.a.y()); +#if 0 + // Wiggle the points a bit to find out whether this fixes the voronoi diagram for this particular polygon. + l1.b.x() = (l2.a.x() += dist(gen)); + l1.b.y() = (l2.a.y() += dist(gen)); +#endif + poly.points.emplace_back(l1.a); + } + + REQUIRE(intersecting_edges({ poly }).empty()); + + VD vd; + construct_voronoi(lines.begin(), lines.end(), &vd); + +#ifdef VORONOI_DEBUG_OUT + dump_voronoi_to_svg(debug_out_path("voronoi-lines.svg").c_str(), + vd, Points(), lines); +#endif +} + +// https://svn.boost.org/trac10/ticket/12903 +// division by zero reported, but this issue is most likely a non-issue, as it produces an infinity for the interval of validity +// of the floating point calculation, therefore forcing a recalculation with extended accuracy. +TEST_CASE("Voronoi division by zero 12903", "[Voronoi]") +{ + Points pts { { 1, 1 }, { 3, 1 }, { 1, 3 }, { 3, 3 }, + { -1, 1 }, { 1, -1 }, { 5, 1 }, { 3, -1 }, + { -1, 3 }, { 1, 5 }, { 5, 3 }, { 3, 5 } }; + { + auto pts2 { pts }; + std::sort(pts2.begin(), pts2.end(), [](auto &l, auto &r) { return (l.x() == r.x()) ? l.y() < r.y() : l.x() < r.x(); }); + // No point removed -> no duplicate. + REQUIRE(std::unique(pts2.begin(), pts2.end()) == pts2.end()); + } + + VD vd; + construct_voronoi(pts.begin(), pts.end(), &vd); + +#ifdef VORONOI_DEBUG_OUT + // Scale the voronoi vertices and input points, so that the dump_voronoi_to_svg will display them correctly. + for (auto &pt : vd.vertices()) { + const_cast<double&>(pt.x()) = scale_(pt.x()); + const_cast<double&>(pt.y()) = scale_(pt.y()); + } + for (auto &pt : pts) + pt = Point::new_scale(pt.x(), pt.y()); + dump_voronoi_to_svg(debug_out_path("voronoi-div-by-zero.svg").c_str(), vd, pts, Lines()); +#endif +} + +// https://svn.boost.org/trac10/ticket/12139 +// Funny sample from a dental industry? +// Vojtech confirms this test fails and rightly so, because the input data contain self intersections. +// This test is suppressed. +TEST_CASE("Voronoi NaN coordinates 12139", "[Voronoi][!hide][!mayfail]") +{ + Lines lines = { + { { 260500,1564400 }, { 261040,1562960 } }, + { { 261040,1562960 }, { 260840,1561780 } }, + { { 260840,1561780 }, { 262620,1561480 } }, + { { 262620,1561480 }, { 263160,1561220 } }, + { { 263160,1561220 }, { 264100,1563259 } }, + { { 264100,1563259 }, { 262380,1566980 } }, + { { 262380,1566980 }, { 260500,1564400 } }, + { { 137520,1851640 }, { 132160,1851100 } }, + { { 132160,1851100 }, { 126460,1848779 } }, + { { 126460,1848779 }, { 123960,1847320 } }, + { { 123960,1847320 }, { 120960,1844559 } }, + { { 120960,1844559 }, { 119640,1843040 } }, + { { 119640,1843040 }, { 118320,1840900 } }, + { { 118320,1840900 }, { 117920,1838120 } }, + { { 117920,1838120 }, { 118219,1833340 } }, + { { 118219,1833340 }, { 116180,1835000 } }, + { { 116180,1835000 }, { 115999,1834820 } }, + { { 115999,1834820 }, { 114240,1836340 } }, + { { 114240,1836340 }, { 112719,1837260 } }, + { { 112719,1837260 }, { 109460,1838239 } }, + { { 109460,1838239 }, { 103639,1837480 } }, + { { 103639,1837480 }, { 99819,1835460 } }, + { { 99819,1835460 }, { 96320,1834260 } }, + { { 96320,1834260 }, { 95339,1834260 } }, + { { 95339,1834260 }, { 93660,1833720 } }, + { { 93660,1833720 }, { 90719,1833300 } }, + { { 90719,1833300 }, { 87860,1831660 } }, + { { 87860,1831660 }, { 84580,1830499 } }, + { { 84580,1830499 }, { 79780,1827419 } }, + { { 79780,1827419 }, { 76020,1824280 } }, + { { 76020,1824280 }, { 73680,1821180 } }, + { { 73680,1821180 }, { 72560,1818960 } }, + { { 72560,1818960 }, { 71699,1817719 } }, + { { 71699,1817719 }, { 70280,1814260 } }, + { { 70280,1814260 }, { 69460,1811060 } }, + { { 69460,1811060 }, { 69659,1807320 } }, + { { 69659,1807320 }, { 69640,1803300 } }, + { { 69640,1803300 }, { 69360,1799780 } }, + { { 69360,1799780 }, { 69320,1796720 } }, + { { 69320,1796720 }, { 69640,1793980 } }, + { { 69640,1793980 }, { 70160,1791780 } }, + { { 70160,1791780 }, { 72460,1784879 } }, + { { 72460,1784879 }, { 74420,1780780 } }, + { { 74420,1780780 }, { 76500,1772899 } }, + { { 76500,1772899 }, { 76760,1769359 } }, + { { 76760,1769359 }, { 76480,1766259 } }, + { { 76480,1766259 }, { 76839,1760360 } }, + { { 76839,1760360 }, { 77539,1756680 } }, + { { 77539,1756680 }, { 80540,1748140 } }, + { { 80540,1748140 }, { 84200,1742619 } }, + { { 84200,1742619 }, { 90900,1735220 } }, + { { 90900,1735220 }, { 94159,1732679 } }, + { { 94159,1732679 }, { 101259,1729559 } }, + { { 101259,1729559 }, { 107299,1727939 } }, + { { 107299,1727939 }, { 110979,1727919 } }, + { { 110979,1727919 }, { 113499,1727240 } }, + { { 113499,1727240 }, { 113619,1727359 } }, + { { 113619,1727359 }, { 114280,1727280 } }, + { { 114280,1727280 }, { 131440,1732560 } }, + { { 131440,1732560 }, { 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135940,1644280 }, { 136000,1640820 } }, + { { 136000,1640820 }, { 135480,1638020 } }, + { { 135480,1638020 }, { 137060,1634220 } }, + { { 137060,1634220 }, { 136320,1631340 } }, + { { 136320,1631340 }, { 134620,1629700 } }, + { { 134620,1629700 }, { 132460,1628199 } }, + { { 132460,1628199 }, { 132299,1627860 } }, + { { 132299,1627860 }, { 138360,1618020 } }, + { { 138360,1618020 }, { 142440,1611859 } }, + { { 142440,1611859 }, { 143180,1611299 } }, + { { 143180,1611299 }, { 144000,1611259 } }, + { { 144000,1611259 }, { 145960,1612540 } }, + { { 145960,1612540 }, { 146720,1613700 } }, + { { 146720,1613700 }, { 147700,1613539 } }, + { { 147700,1613539 }, { 148520,1614039 } }, + { { 148520,1614039 }, { 149840,1613740 } }, + { { 149840,1613740 }, { 150620,1614079 } }, + { { 150620,1614079 }, { 154760,1612740 } }, + { { 154760,1612740 }, { 159000,1608420 } }, + { { 159000,1608420 }, { 161120,1606780 } }, + { { 161120,1606780 }, { 164060,1605139 } }, + { { 164060,1605139 }, { 168079,1603620 } }, + { { 168079,1603620 }, { 170240,1603400 } }, + { { 170240,1603400 }, { 172400,1603499 } }, + { { 172400,1603499 }, { 194440,1613740 } }, + { { 194440,1613740 }, { 195880,1616460 } }, + { { 195880,1616460 }, { 197060,1618140 } }, + { { 197060,1618140 }, { 198039,1617860 } }, + { { 198039,1617860 }, { 198739,1618900 } }, + { { 198739,1618900 }, { 200259,1619200 } }, + { { 200259,1619200 }, { 201940,1618920 } }, + { { 201940,1618920 }, { 201700,1617139 } }, + { { 201700,1617139 }, { 203860,1618179 } }, + { { 203860,1618179 }, { 203500,1617540 } }, + { { 203500,1617540 }, { 205000,1616579 } }, + { { 205000,1616579 }, { 206780,1615020 } }, + { { 206780,1615020 }, { 210159,1614059 } }, + { { 210159,1614059 }, { 217080,1611080 } }, + { { 217080,1611080 }, { 219200,1611579 } }, + { { 219200,1611579 }, { 223219,1610980 } }, + { { 223219,1610980 }, { 224580,1610540 } }, + { { 224580,1610540 }, { 227460,1611440 } }, + { { 227460,1611440 }, { 229359,1611859 } }, + { { 229359,1611859 }, { 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} }, + { { 623260,1688799 }, { 619620,1693799 } }, + { { 619620,1693799 }, { 621720,1694859 } }, + { { 621720,1694859 }, { 624940,1694379 } }, + { { 624940,1694379 }, { 627120,1695600 } }, + { { 627120,1695600 }, { 627740,1696120 } }, + { { 627740,1696120 }, { 631120,1697460 } }, + { { 631120,1697460 }, { 633980,1698340 } }, + { { 633980,1698340 }, { 638380,1700460 } }, + { { 638380,1700460 }, { 642660,1703300 } }, + { { 642660,1703300 }, { 643620,1704140 } }, + { { 643620,1704140 }, { 646300,1707000 } }, + { { 646300,1707000 }, { 649060,1710880 } }, + { { 649060,1710880 }, { 651160,1714879 } }, + { { 651160,1714879 }, { 651740,1716559 } }, + { { 651740,1716559 }, { 653139,1722619 } }, + { { 653139,1722619 }, { 653020,1728320 } }, + { { 653020,1728320 }, { 652719,1731420 } }, + { { 652719,1731420 }, { 651619,1736360 } }, + { { 651619,1736360 }, { 649819,1743160 } }, + { { 649819,1743160 }, { 646440,1749059 } }, + { { 646440,1749059 }, { 645219,1750399 } }, + { { 645219,1750399 }, { 643959,1752679 } }, + { { 643959,1752679 }, { 643959,1753740 } }, + { { 643959,1753740 }, { 642140,1754240 } }, + { { 642140,1754240 }, { 643760,1754099 } }, + { { 643760,1754099 }, { 644320,1754280 } }, + { { 644320,1754280 }, { 645000,1754879 } }, + { { 645000,1754879 }, { 646940,1755620 } }, + { { 646940,1755620 }, { 654779,1757820 } }, + { { 654779,1757820 }, { 661100,1761559 } }, + { { 661100,1761559 }, { 664099,1763980 } }, + { { 664099,1763980 }, { 668220,1768480 } }, + { { 668220,1768480 }, { 671920,1773640 } }, + { { 671920,1773640 }, { 674939,1779540 } }, + { { 674939,1779540 }, { 677760,1782440 } }, + { { 677760,1782440 }, { 679080,1785739 } }, + { { 679080,1785739 }, { 678780,1788100 } }, + { { 678780,1788100 }, { 678020,1791500 } }, + { { 678020,1791500 }, { 677120,1793600 } }, + { { 677120,1793600 }, { 676860,1795800 } }, + { { 676860,1795800 }, { 676440,1797320 } }, + { { 676440,1797320 }, { 676459,1798519 } }, + { { 676459,1798519 }, { 675620,1800159 } }, + { { 675620,1800159 }, { 675520,1801019 } }, + { { 675520,1801019 }, { 673360,1804899 } }, + { { 673360,1804899 }, { 672740,1807079 } }, + { { 672740,1807079 }, { 673300,1809260 } }, + { { 673300,1809260 }, { 674539,1811019 } }, + { { 674539,1811019 }, { 675499,1812020 } }, + { { 675499,1812020 }, { 677660,1817240 } }, + { { 677660,1817240 }, { 679659,1824280 } }, + { { 679659,1824280 }, { 680380,1828779 } }, + { { 680380,1828779 }, { 679519,1837999 } }, + { { 679519,1837999 }, { 677940,1844379 } }, + { { 677940,1844379 }, { 676940,1846900 } }, + { { 676940,1846900 }, { 675479,1849379 } }, + { { 675479,1849379 }, { 674000,1851200 } }, + { { 674000,1851200 }, { 671380,1853480 } }, + { { 671380,1853480 }, { 667019,1855240 } }, + { { 667019,1855240 }, { 662540,1856060 } }, + { { 662540,1856060 }, { 660960,1856599 } }, + { { 660960,1856599 }, { 656240,1857020 } }, + { { 656240,1857020 }, { 655600,1856960 } }, + { { 655600,1856960 }, { 652839,1855880 } }, + { { 652839,1855880 }, { 652019,1855840 } }, + { { 652019,1855840 }, { 651459,1855060 } }, + { { 651459,1855060 }, { 652179,1854359 } }, + { { 652179,1854359 }, { 652019,1849919 } }, + { { 652019,1849919 }, { 650620,1846920 } }, + { { 650620,1846920 }, { 647299,1844540 } }, + { { 647299,1844540 }, { 644500,1843819 } }, + { { 644500,1843819 }, { 641860,1844859 } }, + { { 641860,1844859 }, { 641059,1845340 } }, + { { 641059,1845340 }, { 638860,1845820 } }, + { { 638860,1845820 }, { 638000,1845820 } }, + { { 638000,1845820 }, { 636340,1845479 } }, + { { 636340,1845479 }, { 634980,1844800 } }, + { { 634980,1844800 }, { 632660,1842979 } }, + { { 632660,1842979 }, { 631140,1841120 } }, + { { 631140,1841120 }, { 629140,1839520 } }, + { { 629140,1839520 }, { 626640,1839540 } }, + { { 626640,1839540 }, { 624159,1840739 } }, + { { 624159,1840739 }, { 623820,1841380 } }, + { { 623820,1841380 }, { 622440,1842719 } }, + { { 622440,1842719 }, { 622100,1843680 } }, + { { 622100,1843680 }, { 623780,1846100 } }, + { { 623780,1846100 }, { 624580,1846920 } }, + { { 624580,1846920 }, { 626120,1856720 } }, + { { 626120,1856720 }, { 627440,1860000 } }, + { { 627440,1860000 }, { 628000,1864299 } }, + { { 628000,1864299 }, { 627380,1865999 } }, + { { 627380,1865999 }, { 626260,1867580 } }, + { { 626260,1867580 }, { 623660,1869520 } }, + { { 623660,1869520 }, { 618680,1872780 } }, + { { 618680,1872780 }, { 617699,1873140 } }, + { { 617699,1873140 }, { 612000,1874160 } }, + { { 612000,1874160 }, { 609840,1874220 } }, + { { 609840,1874220 }, { 606940,1873860 } }, + { { 136680,1926960 }, { 135500,1926360 } }, + { { 135500,1926360 }, { 137360,1923060 } }, + { { 137360,1923060 }, { 139500,1918559 } }, + { { 139500,1918559 }, { 140780,1913239 } }, + { { 140780,1913239 }, { 139600,1913020 } }, + { { 139600,1913020 }, { 127380,1923600 } }, + { { 127380,1923600 }, { 122800,1926059 } }, + { { 122800,1926059 }, { 118879,1927719 } }, + { { 118879,1927719 }, { 114420,1928300 } }, + { { 114420,1928300 }, { 111480,1927020 } }, + { { 111480,1927020 }, { 110619,1925399 } }, + { { 110619,1925399 }, { 109620,1924200 } }, + { { 109620,1924200 }, { 108860,1922780 } }, + { { 108860,1922780 }, { 108479,1920999 } }, + { { 108479,1920999 }, { 106600,1918080 } }, + { { 106600,1918080 }, { 106220,1917740 } }, + { { 106220,1917740 }, { 105199,1916960 } }, + { { 105199,1916960 }, { 101460,1914859 } }, + { { 101460,1914859 }, { 99480,1914379 } }, + { { 99480,1914379 }, { 97179,1913499 } }, + { { 97179,1913499 }, { 94900,1911100 } }, + { { 94900,1911100 }, { 94100,1909639 } }, + { { 94100,1909639 }, { 93379,1907740 } }, + { { 93379,1907740 }, { 93960,1898259 } }, + { { 93960,1898259 }, { 93739,1896460 } }, + { { 93739,1896460 }, { 94299,1893080 } }, + { { 94299,1893080 }, { 97240,1883440 } }, + { { 97240,1883440 }, { 99799,1879780 } }, + { { 99799,1879780 }, { 100400,1878120 } }, + { { 100400,1878120 }, { 100199,1877200 } }, + { { 100199,1877200 }, { 98940,1877460 } }, + { { 98940,1877460 }, { 96320,1878480 } }, + { { 96320,1878480 }, { 86020,1881039 } }, + { { 86020,1881039 }, { 84340,1881080 } }, + { { 84340,1881080 }, { 76780,1882600 } }, + { { 76780,1882600 }, { 74380,1883580 } }, + { { 74380,1883580 }, { 72679,1884019 } }, + { { 72679,1884019 }, { 70900,1885940 } }, + { { 70900,1885940 }, { 71240,1888340 } }, + { { 71240,1888340 }, { 72720,1889940 } }, + { { 72720,1889940 }, { 74640,1891360 } }, + { { 74640,1891360 }, { 75620,1893179 } }, + { { 75620,1893179 }, { 77140,1895340 } }, + { { 77140,1895340 }, { 81040,1899500 } }, + { { 81040,1899500 }, { 82760,1900380 } }, + { { 82760,1900380 }, { 83720,1902300 } }, + { { 83720,1902300 }, { 85459,1903700 } }, + { { 85459,1903700 }, { 86960,1905940 } }, + { { 86960,1905940 }, { 88280,1913020 } }, + { { 88280,1913020 }, { 88160,1913539 } }, + { { 88160,1913539 }, { 88020,1913860 } }, + { { 88020,1913860 }, { 86080,1915200 } }, + { { 86080,1915200 }, { 85660,1916740 } }, + { { 85660,1916740 }, { 83899,1918799 } }, + { { 83899,1918799 }, { 79360,1921160 } }, + { { 79360,1921160 }, { 76400,1923140 } }, + { { 76400,1923140 }, { 70800,1926180 } }, + { { 70800,1926180 }, { 64460,1927659 } }, + { { 64460,1927659 }, { 60880,1927820 } }, + { { 60880,1927820 }, { 55780,1925580 } }, + { { 55780,1925580 }, { 54940,1925040 } }, + { { 54940,1925040 }, { 52199,1921700 } }, + { { 52199,1921700 }, { 49680,1916579 } }, + { { 49680,1916579 }, { 48719,1914180 } }, + { { 48719,1914180 }, { 48620,1913080 } }, + { { 48620,1913080 }, { 47640,1909120 } }, + { { 47640,1909120 }, { 48280,1899319 } }, + { { 48280,1899319 }, { 49140,1895600 } }, + { { 49140,1895600 }, { 50320,1892899 } }, + { { 50320,1892899 }, { 51559,1890640 } }, + { { 51559,1890640 }, { 52140,1889960 } }, + { { 52140,1889960 }, { 54640,1887999 } }, + { { 54640,1887999 }, { 55639,1886500 } }, + { { 55639,1886500 }, { 55720,1885080 } }, + { { 55720,1885080 }, { 55439,1883220 } }, + { { 55439,1883220 }, { 54640,1882159 } }, + { { 54640,1882159 }, { 54100,1880300 } }, + { { 54100,1880300 }, { 52479,1874079 } }, + { { 52479,1874079 }, { 51700,1869000 } }, + { { 51700,1869000 }, { 51600,1865419 } }, + { { 51600,1865419 }, { 51720,1859820 } }, + { { 51720,1859820 }, { 52160,1857260 } }, + { { 52160,1857260 }, { 52539,1856120 } }, + { { 52539,1856120 }, { 57240,1845720 } }, + { { 57240,1845720 }, { 58280,1844400 } }, + { { 58280,1844400 }, { 60639,1840820 } }, + { { 60639,1840820 }, { 65580,1835540 } }, + { { 65580,1835540 }, { 68340,1833340 } }, + { { 68340,1833340 }, { 71660,1831480 } }, + { { 71660,1831480 }, { 73460,1829960 } }, + { { 73460,1829960 }, { 75200,1829319 } }, + { { 75200,1829319 }, { 77200,1828960 } }, + { { 77200,1828960 }, { 78640,1828920 } }, + { { 78640,1828920 }, { 111780,1842700 } }, + { { 111780,1842700 }, { 112800,1843480 } }, + { { 112800,1843480 }, { 113879,1844879 } }, + { { 113879,1844879 }, { 116379,1847379 } }, + { { 116379,1847379 }, { 116360,1847580 } }, + { { 116360,1847580 }, { 117100,1848799 } }, + { { 117100,1848799 }, { 120160,1851799 } }, + { { 120160,1851799 }, { 121860,1852320 } }, + { { 121860,1852320 }, { 124280,1852679 } }, + { { 124280,1852679 }, { 128920,1854659 } }, + { { 128920,1854659 }, { 130840,1856360 } }, + { { 130840,1856360 }, { 133520,1859460 } }, + { { 133520,1859460 }, { 135079,1860860 } }, + { { 135079,1860860 }, { 137280,1864440 } }, + { { 137280,1864440 }, { 142980,1872899 } }, + { { 142980,1872899 }, { 144600,1875840 } }, + { { 144600,1875840 }, { 147240,1883480 } }, + { { 147240,1883480 }, { 147460,1886539 } }, + { { 147460,1886539 }, { 147660,1886920 } }, + { { 147660,1886920 }, { 148399,1891720 } }, + { { 148399,1891720 }, { 148820,1896799 } }, + { { 148820,1896799 }, { 148399,1898880 } }, + { { 148399,1898880 }, { 148799,1899420 } }, + { { 148799,1899420 }, { 150520,1898539 } }, + { { 150520,1898539 }, { 154760,1892760 } }, + { { 154760,1892760 }, { 156580,1889240 } }, + { { 156580,1889240 }, { 156940,1888900 } }, + { { 156940,1888900 }, { 157540,1889540 } }, + { { 157540,1889540 }, { 156860,1896819 } }, + { { 156860,1896819 }, { 155639,1903940 } }, + { { 155639,1903940 }, { 153679,1908100 } }, + { { 153679,1908100 }, { 152859,1909039 } }, + { { 152859,1909039 }, { 149660,1915580 } }, + { { 149660,1915580 }, { 148000,1918600 } }, + { { 148000,1918600 }, { 141640,1926980 } }, + { { 141640,1926980 }, { 140060,1927899 } }, + { { 140060,1927899 }, { 136960,1929019 } }, + { { 136960,1929019 }, { 136680,1926960 } }, + { { 627100,1941519 }, { 625120,1940060 } }, + { { 625120,1940060 }, { 614580,1934680 } }, + { { 614580,1934680 }, { 608780,1929319 } }, + { { 608780,1929319 }, { 607400,1927679 } }, + { { 607400,1927679 }, { 606160,1925920 } }, + { { 606160,1925920 }, { 604480,1922240 } }, + { { 604480,1922240 }, { 602420,1916819 } }, + { { 602420,1916819 }, { 602279,1915260 } }, + { { 602279,1915260 }, { 602880,1907960 } }, + { { 602880,1907960 }, { 604140,1902719 } }, + { { 604140,1902719 }, { 605880,1898539 } }, + { { 605880,1898539 }, { 606640,1897399 } }, + { { 606640,1897399 }, { 609680,1894420 } }, + { { 609680,1894420 }, { 611099,1893640 } }, + { { 611099,1893640 }, { 616099,1890340 } }, + { { 616099,1890340 }, { 617520,1889160 } }, + { { 617520,1889160 }, { 620220,1885540 } }, + { { 620220,1885540 }, { 624480,1882260 } }, + { { 624480,1882260 }, { 628660,1880280 } }, + { { 628660,1880280 }, { 632520,1879659 } }, + { { 632520,1879659 }, { 637760,1879859 } }, + { { 637760,1879859 }, { 640899,1881500 } }, + { { 640899,1881500 }, { 644220,1883980 } }, + { { 644220,1883980 }, { 643900,1890860 } }, + { { 643900,1890860 }, { 643060,1894160 } }, + { { 643060,1894160 }, { 642459,1900320 } }, + { { 642459,1900320 }, { 642400,1903120 } }, + { { 642400,1903120 }, { 643819,1908519 } }, + { { 643819,1908519 }, { 644700,1912560 } }, + { { 644700,1912560 }, { 644640,1916380 } }, + { { 644640,1916380 }, { 644959,1918600 } }, + { { 644959,1918600 }, { 642540,1925620 } }, + { { 642540,1925620 }, { 642439,1926640 } }, + { { 642439,1926640 }, { 641860,1928300 } }, + { { 641860,1928300 }, { 638700,1932939 } }, + { { 638700,1932939 }, { 634820,1934200 } }, + { { 634820,1934200 }, { 631980,1936539 } }, + { { 631980,1936539 }, { 630160,1940600 } }, + { { 630160,1940600 }, { 627740,1941640 } }, + { { 627740,1941640 }, { 627400,1941660 } }, + { { 627400,1941660 }, { 627100,1941519 } } + }; + +#if 0 + // Verify whether two any two non-neighbor line segments intersect. They should not, otherwise the Voronoi builder + // is not guaranteed to succeed. + for (size_t i = 0; i < lines.size(); ++ i) + for (size_t j = i + 1; j < lines.size(); ++ j) { + Point &ip1 = lines[i].a; + Point &ip2 = lines[i].b; + Point &jp1 = lines[j].a; + Point &jp2 = lines[j].b; + if (&ip1 != &jp2 && &jp1 != &ip2) { + REQUIRE(! Slic3r::Geometry::segments_intersect(ip1, ip2, jp1, jp2)); + } + } +#endif + + VD vd; + construct_voronoi(lines.begin(), lines.end(), &vd); + + for (const auto& edge : vd.edges()) + if (edge.is_finite()) { + auto v0 = edge.vertex0(); + auto v1 = edge.vertex1(); + REQUIRE((v0->x() == 0 || std::isnormal(v0->x()))); + REQUIRE((v0->y() == 0 || std::isnormal(v0->y()))); + REQUIRE((v1->x() == 0 || std::isnormal(v1->x()))); + REQUIRE((v1->y() == 0 || std::isnormal(v1->y()))); + } + +#ifdef VORONOI_DEBUG_OUT + dump_voronoi_to_svg(debug_out_path("voronoi-NaNs.svg").c_str(), + vd, Points(), lines, 0.015); +#endif +} |