2016-09-12 14:25:15 +00:00
|
|
|
#ifndef slic3r_EdgeGrid_hpp_
|
|
|
|
#define slic3r_EdgeGrid_hpp_
|
|
|
|
|
|
|
|
#include <stdint.h>
|
|
|
|
#include <math.h>
|
|
|
|
|
|
|
|
#include "Point.hpp"
|
|
|
|
#include "BoundingBox.hpp"
|
|
|
|
#include "ExPolygon.hpp"
|
|
|
|
#include "ExPolygonCollection.hpp"
|
|
|
|
|
|
|
|
namespace Slic3r {
|
|
|
|
namespace EdgeGrid {
|
|
|
|
|
2021-02-05 10:20:04 +00:00
|
|
|
|
|
|
|
class Contour {
|
|
|
|
public:
|
|
|
|
Contour() = default;
|
|
|
|
Contour(const Slic3r::Point *begin, const Slic3r::Point *end, bool open) : m_begin(begin), m_end(end), m_open(open) {}
|
|
|
|
Contour(const Slic3r::Point *data, size_t size, bool open) : Contour(data, data + size, open) {}
|
|
|
|
Contour(const std::vector<Slic3r::Point> &pts, bool open) : Contour(pts.data(), pts.size(), open) {}
|
|
|
|
|
|
|
|
const Slic3r::Point *begin() const { return m_begin; }
|
|
|
|
const Slic3r::Point *end() const { return m_end; }
|
|
|
|
bool open() const { return m_open; }
|
|
|
|
bool closed() const { return ! m_open; }
|
|
|
|
|
|
|
|
// Start point of a segment idx.
|
|
|
|
const Slic3r::Point& segment_start(size_t idx) const {
|
|
|
|
assert(idx < this->num_segments());
|
|
|
|
return m_begin[idx];
|
|
|
|
}
|
|
|
|
|
|
|
|
// End point of a segment idx.
|
|
|
|
const Slic3r::Point& segment_end(size_t idx) const {
|
|
|
|
assert(idx < this->num_segments());
|
|
|
|
const Slic3r::Point *ptr = m_begin + idx + 1;
|
|
|
|
return ptr == m_end ? *m_begin : *ptr;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Start point of a segment preceding idx.
|
|
|
|
const Slic3r::Point& segment_prev(size_t idx) const {
|
|
|
|
assert(idx < this->num_segments());
|
|
|
|
assert(idx > 0 || ! m_open);
|
|
|
|
return idx == 0 ? m_end[-1] : m_begin[idx - 1];
|
|
|
|
}
|
|
|
|
|
|
|
|
// Index of a segment preceding idx.
|
|
|
|
const size_t segment_idx_prev(size_t idx) const {
|
|
|
|
assert(idx < this->num_segments());
|
|
|
|
assert(idx > 0 || ! m_open);
|
|
|
|
return (idx == 0 ? this->size() : idx) - 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Index of a segment preceding idx.
|
|
|
|
const size_t segment_idx_next(size_t idx) const {
|
|
|
|
assert(idx < this->num_segments());
|
|
|
|
++ idx;
|
|
|
|
return m_begin + idx == m_end ? 0 : idx;
|
|
|
|
}
|
|
|
|
|
|
|
|
size_t num_segments() const { return this->size() - (m_open ? 1 : 0); }
|
|
|
|
|
|
|
|
private:
|
|
|
|
size_t size() const { return m_end - m_begin; }
|
|
|
|
|
|
|
|
const Slic3r::Point *m_begin { nullptr };
|
|
|
|
const Slic3r::Point *m_end { nullptr };
|
|
|
|
bool m_open { false };
|
|
|
|
};
|
|
|
|
|
2016-12-13 18:22:23 +00:00
|
|
|
class Grid
|
2016-09-12 14:25:15 +00:00
|
|
|
{
|
2016-12-13 18:22:23 +00:00
|
|
|
public:
|
2021-02-04 14:48:36 +00:00
|
|
|
Grid() = default;
|
|
|
|
Grid(const BoundingBox &bbox) : m_bbox(bbox) {}
|
2016-09-12 14:25:15 +00:00
|
|
|
|
2016-11-29 18:28:33 +00:00
|
|
|
void set_bbox(const BoundingBox &bbox) { m_bbox = bbox; }
|
|
|
|
|
2021-02-05 10:20:04 +00:00
|
|
|
// Fill in the grid with open polylines or closed contours.
|
|
|
|
// If open flag is indicated, then polylines_or_polygons are considered to be open by default.
|
|
|
|
// Only if the first point of a polyline is equal to the last point of a polyline,
|
|
|
|
// then the polyline is considered to be closed and the last repeated point is removed when
|
|
|
|
// inserted into the EdgeGrid.
|
|
|
|
// Most of the Grid functions expect all the contours to be closed, you have been warned!
|
|
|
|
void create(const std::vector<Points> &polylines_or_polygons, coord_t resolution, bool open);
|
|
|
|
void create(const Polygons &polygons, const Polylines &polylines, coord_t resolution);
|
|
|
|
|
|
|
|
// Fill in the grid with closed contours.
|
2016-09-12 14:25:15 +00:00
|
|
|
void create(const Polygons &polygons, coord_t resolution);
|
2020-11-05 16:32:40 +00:00
|
|
|
void create(const std::vector<const Polygon*> &polygons, coord_t resolution);
|
2021-02-05 10:20:04 +00:00
|
|
|
void create(const std::vector<Points> &polygons, coord_t resolution) { this->create(polygons, resolution, false); }
|
2016-09-12 14:25:15 +00:00
|
|
|
void create(const ExPolygon &expoly, coord_t resolution);
|
|
|
|
void create(const ExPolygons &expolygons, coord_t resolution);
|
|
|
|
void create(const ExPolygonCollection &expolygons, coord_t resolution);
|
|
|
|
|
2021-02-05 10:20:04 +00:00
|
|
|
const std::vector<Contour>& contours() const { return m_contours; }
|
2019-11-01 18:59:09 +00:00
|
|
|
|
2016-10-17 16:06:38 +00:00
|
|
|
#if 0
|
|
|
|
// Test, whether the edges inside the grid intersect with the polygons provided.
|
|
|
|
bool intersect(const MultiPoint &polyline, bool closed);
|
|
|
|
bool intersect(const Polygon &polygon) { return intersect(static_cast<const MultiPoint&>(polygon), true); }
|
|
|
|
bool intersect(const Polygons &polygons) { for (size_t i = 0; i < polygons.size(); ++ i) if (intersect(polygons[i])) return true; return false; }
|
|
|
|
bool intersect(const ExPolygon &expoly) { if (intersect(expoly.contour)) return true; for (size_t i = 0; i < expoly.holes.size(); ++ i) if (intersect(expoly.holes[i])) return true; return false; }
|
|
|
|
bool intersect(const ExPolygons &expolygons) { for (size_t i = 0; i < expolygons.size(); ++ i) if (intersect(expolygons[i])) return true; return false; }
|
|
|
|
bool intersect(const ExPolygonCollection &expolygons) { return intersect(expolygons.expolygons); }
|
|
|
|
|
|
|
|
// Test, whether a point is inside a contour.
|
|
|
|
bool inside(const Point &pt);
|
|
|
|
#endif
|
|
|
|
|
2016-09-12 14:25:15 +00:00
|
|
|
// Fill in a rough m_signed_distance_field from the edge grid.
|
|
|
|
// The rough SDF is used by signed_distance() for distances outside of the search_radius.
|
2021-02-05 10:20:04 +00:00
|
|
|
// Only call this function for closed contours!
|
2016-09-12 14:25:15 +00:00
|
|
|
void calculate_sdf();
|
|
|
|
|
|
|
|
// Return an estimate of the signed distance based on m_signed_distance_field grid.
|
|
|
|
float signed_distance_bilinear(const Point &pt) const;
|
|
|
|
|
|
|
|
// Calculate a signed distance to the contours in search_radius from the point.
|
2021-02-05 10:20:04 +00:00
|
|
|
// Only call this function for closed contours!
|
2019-10-30 09:18:56 +00:00
|
|
|
struct ClosestPointResult {
|
|
|
|
size_t contour_idx = size_t(-1);
|
|
|
|
size_t start_point_idx = size_t(-1);
|
|
|
|
// Signed distance to the closest point.
|
|
|
|
double distance = std::numeric_limits<double>::max();
|
|
|
|
// Parameter of the closest point on edge starting with start_point_idx <0, 1)
|
|
|
|
double t = 0.;
|
|
|
|
|
|
|
|
bool valid() const { return contour_idx != size_t(-1); }
|
|
|
|
};
|
2021-02-05 10:20:04 +00:00
|
|
|
ClosestPointResult closest_point_signed_distance(const Point &pt, coord_t search_radius) const;
|
2019-10-30 09:18:56 +00:00
|
|
|
|
2021-02-05 10:20:04 +00:00
|
|
|
// Only call this function for closed contours!
|
2019-10-30 09:18:56 +00:00
|
|
|
bool signed_distance_edges(const Point &pt, coord_t search_radius, coordf_t &result_min_dist, bool *pon_segment = nullptr) const;
|
2016-09-12 14:25:15 +00:00
|
|
|
|
|
|
|
// Calculate a signed distance to the contours in search_radius from the point. If no edge is found in search_radius,
|
|
|
|
// return an interpolated value from m_signed_distance_field, if it exists.
|
2021-02-05 10:20:04 +00:00
|
|
|
// Only call this function for closed contours!
|
2016-09-12 14:25:15 +00:00
|
|
|
bool signed_distance(const Point &pt, coord_t search_radius, coordf_t &result_min_dist) const;
|
|
|
|
|
|
|
|
const BoundingBox& bbox() const { return m_bbox; }
|
|
|
|
const coord_t resolution() const { return m_resolution; }
|
|
|
|
const size_t rows() const { return m_rows; }
|
|
|
|
const size_t cols() const { return m_cols; }
|
|
|
|
|
2016-11-29 18:28:33 +00:00
|
|
|
// For supports: Contours enclosing the rasterized edges.
|
2018-09-07 12:53:42 +00:00
|
|
|
Polygons contours_simplified(coord_t offset, bool fill_holes) const;
|
2016-11-29 18:28:33 +00:00
|
|
|
|
2021-02-05 10:20:04 +00:00
|
|
|
typedef std::pair<const Contour*, size_t> ContourPoint;
|
|
|
|
typedef std::pair<const Contour*, size_t> ContourEdge;
|
2018-10-11 12:13:52 +00:00
|
|
|
std::vector<std::pair<ContourEdge, ContourEdge>> intersecting_edges() const;
|
|
|
|
bool has_intersecting_edges() const;
|
|
|
|
|
2019-11-01 18:59:09 +00:00
|
|
|
template<typename VISITOR> void visit_cells_intersecting_line(Slic3r::Point p1, Slic3r::Point p2, VISITOR &visitor) const
|
2019-08-21 12:52:22 +00:00
|
|
|
{
|
|
|
|
// End points of the line segment.
|
2020-11-20 17:46:39 +00:00
|
|
|
assert(m_bbox.contains(p1));
|
|
|
|
assert(m_bbox.contains(p2));
|
|
|
|
p1 -= m_bbox.min;
|
|
|
|
p2 -= m_bbox.min;
|
2021-01-11 09:23:56 +00:00
|
|
|
assert(p1.x() >= 0 && size_t(p1.x()) < m_cols * m_resolution);
|
|
|
|
assert(p1.y() >= 0 && size_t(p1.y()) < m_rows * m_resolution);
|
|
|
|
assert(p2.x() >= 0 && size_t(p2.x()) < m_cols * m_resolution);
|
|
|
|
assert(p2.y() >= 0 && size_t(p2.y()) < m_rows * m_resolution);
|
2019-08-21 12:52:22 +00:00
|
|
|
// Get the cells of the end points.
|
|
|
|
coord_t ix = p1(0) / m_resolution;
|
|
|
|
coord_t iy = p1(1) / m_resolution;
|
|
|
|
coord_t ixb = p2(0) / m_resolution;
|
|
|
|
coord_t iyb = p2(1) / m_resolution;
|
|
|
|
assert(ix >= 0 && size_t(ix) < m_cols);
|
|
|
|
assert(iy >= 0 && size_t(iy) < m_rows);
|
|
|
|
assert(ixb >= 0 && size_t(ixb) < m_cols);
|
|
|
|
assert(iyb >= 0 && size_t(iyb) < m_rows);
|
|
|
|
// Account for the end points.
|
2019-11-01 18:59:09 +00:00
|
|
|
if (! visitor(iy, ix) || (ix == ixb && iy == iyb))
|
2019-08-21 12:52:22 +00:00
|
|
|
// Both ends fall into the same cell.
|
|
|
|
return;
|
|
|
|
// Raster the centeral part of the line.
|
|
|
|
coord_t dx = std::abs(p2(0) - p1(0));
|
|
|
|
coord_t dy = std::abs(p2(1) - p1(1));
|
|
|
|
if (p1(0) < p2(0)) {
|
|
|
|
int64_t ex = int64_t((ix + 1)*m_resolution - p1(0)) * int64_t(dy);
|
|
|
|
if (p1(1) < p2(1)) {
|
|
|
|
// x positive, y positive
|
|
|
|
int64_t ey = int64_t((iy + 1)*m_resolution - p1(1)) * int64_t(dx);
|
|
|
|
do {
|
|
|
|
assert(ix <= ixb && iy <= iyb);
|
|
|
|
if (ex < ey) {
|
|
|
|
ey -= ex;
|
|
|
|
ex = int64_t(dy) * m_resolution;
|
|
|
|
ix += 1;
|
2020-11-20 17:46:39 +00:00
|
|
|
assert(ix <= ixb);
|
2019-08-21 12:52:22 +00:00
|
|
|
}
|
|
|
|
else if (ex == ey) {
|
|
|
|
ex = int64_t(dy) * m_resolution;
|
|
|
|
ey = int64_t(dx) * m_resolution;
|
|
|
|
ix += 1;
|
|
|
|
iy += 1;
|
2020-11-20 17:46:39 +00:00
|
|
|
assert(ix <= ixb);
|
|
|
|
assert(iy <= iyb);
|
2019-08-21 12:52:22 +00:00
|
|
|
}
|
|
|
|
else {
|
|
|
|
assert(ex > ey);
|
|
|
|
ex -= ey;
|
|
|
|
ey = int64_t(dx) * m_resolution;
|
|
|
|
iy += 1;
|
2020-11-20 17:46:39 +00:00
|
|
|
assert(iy <= iyb);
|
2019-08-21 12:52:22 +00:00
|
|
|
}
|
2019-11-01 18:59:09 +00:00
|
|
|
if (! visitor(iy, ix))
|
|
|
|
return;
|
2019-08-21 12:52:22 +00:00
|
|
|
} while (ix != ixb || iy != iyb);
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
// x positive, y non positive
|
|
|
|
int64_t ey = int64_t(p1(1) - iy*m_resolution) * int64_t(dx);
|
|
|
|
do {
|
|
|
|
assert(ix <= ixb && iy >= iyb);
|
|
|
|
if (ex <= ey) {
|
|
|
|
ey -= ex;
|
|
|
|
ex = int64_t(dy) * m_resolution;
|
|
|
|
ix += 1;
|
2020-11-20 17:46:39 +00:00
|
|
|
assert(ix <= ixb);
|
2019-08-21 12:52:22 +00:00
|
|
|
}
|
|
|
|
else {
|
|
|
|
ex -= ey;
|
|
|
|
ey = int64_t(dx) * m_resolution;
|
|
|
|
iy -= 1;
|
2020-11-20 17:46:39 +00:00
|
|
|
assert(iy >= iyb);
|
2019-08-21 12:52:22 +00:00
|
|
|
}
|
2019-11-01 18:59:09 +00:00
|
|
|
if (! visitor(iy, ix))
|
|
|
|
return;
|
2019-08-21 12:52:22 +00:00
|
|
|
} while (ix != ixb || iy != iyb);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
int64_t ex = int64_t(p1(0) - ix*m_resolution) * int64_t(dy);
|
|
|
|
if (p1(1) < p2(1)) {
|
|
|
|
// x non positive, y positive
|
|
|
|
int64_t ey = int64_t((iy + 1)*m_resolution - p1(1)) * int64_t(dx);
|
|
|
|
do {
|
|
|
|
assert(ix >= ixb && iy <= iyb);
|
|
|
|
if (ex < ey) {
|
|
|
|
ey -= ex;
|
|
|
|
ex = int64_t(dy) * m_resolution;
|
|
|
|
ix -= 1;
|
2020-11-20 17:46:39 +00:00
|
|
|
assert(ix >= ixb);
|
2019-08-21 12:52:22 +00:00
|
|
|
}
|
|
|
|
else {
|
|
|
|
assert(ex >= ey);
|
|
|
|
ex -= ey;
|
|
|
|
ey = int64_t(dx) * m_resolution;
|
|
|
|
iy += 1;
|
2020-11-20 17:46:39 +00:00
|
|
|
assert(iy <= iyb);
|
2019-08-21 12:52:22 +00:00
|
|
|
}
|
2019-11-01 18:59:09 +00:00
|
|
|
if (! visitor(iy, ix))
|
|
|
|
return;
|
2019-08-21 12:52:22 +00:00
|
|
|
} while (ix != ixb || iy != iyb);
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
// x non positive, y non positive
|
|
|
|
int64_t ey = int64_t(p1(1) - iy*m_resolution) * int64_t(dx);
|
|
|
|
do {
|
|
|
|
assert(ix >= ixb && iy >= iyb);
|
|
|
|
if (ex < ey) {
|
|
|
|
ey -= ex;
|
|
|
|
ex = int64_t(dy) * m_resolution;
|
|
|
|
ix -= 1;
|
2020-11-20 17:46:39 +00:00
|
|
|
assert(ix >= ixb);
|
2019-08-21 12:52:22 +00:00
|
|
|
}
|
|
|
|
else if (ex == ey) {
|
|
|
|
// The lower edge of a grid cell belongs to the cell.
|
|
|
|
// Handle the case where the ray may cross the lower left corner of a cell in a general case,
|
|
|
|
// or a left or lower edge in a degenerate case (horizontal or vertical line).
|
|
|
|
if (dx > 0) {
|
|
|
|
ex = int64_t(dy) * m_resolution;
|
|
|
|
ix -= 1;
|
2020-11-20 17:46:39 +00:00
|
|
|
assert(ix >= ixb);
|
2019-08-21 12:52:22 +00:00
|
|
|
}
|
|
|
|
if (dy > 0) {
|
|
|
|
ey = int64_t(dx) * m_resolution;
|
|
|
|
iy -= 1;
|
2020-11-20 17:46:39 +00:00
|
|
|
assert(iy >= iyb);
|
2019-08-21 12:52:22 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
assert(ex > ey);
|
|
|
|
ex -= ey;
|
|
|
|
ey = int64_t(dx) * m_resolution;
|
|
|
|
iy -= 1;
|
2020-11-20 17:46:39 +00:00
|
|
|
assert(iy >= iyb);
|
2019-08-21 12:52:22 +00:00
|
|
|
}
|
2019-11-01 18:59:09 +00:00
|
|
|
if (! visitor(iy, ix))
|
|
|
|
return;
|
2019-08-21 12:52:22 +00:00
|
|
|
} while (ix != ixb || iy != iyb);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2019-11-15 15:20:01 +00:00
|
|
|
template<typename VISITOR> void visit_cells_intersecting_box(BoundingBox bbox, VISITOR &visitor) const
|
|
|
|
{
|
|
|
|
// End points of the line segment.
|
|
|
|
bbox.min -= m_bbox.min;
|
|
|
|
bbox.max -= m_bbox.min + Point(1, 1);
|
|
|
|
// Get the cells of the end points.
|
|
|
|
bbox.min /= m_resolution;
|
|
|
|
bbox.max /= m_resolution;
|
|
|
|
// Trim with the cells.
|
2020-03-25 10:07:26 +00:00
|
|
|
bbox.min.x() = std::max<coord_t>(bbox.min.x(), 0);
|
|
|
|
bbox.min.y() = std::max<coord_t>(bbox.min.y(), 0);
|
|
|
|
bbox.max.x() = std::min<coord_t>(bbox.max.x(), (coord_t)m_cols - 1);
|
|
|
|
bbox.max.y() = std::min<coord_t>(bbox.max.y(), (coord_t)m_rows - 1);
|
2019-11-15 15:20:01 +00:00
|
|
|
for (coord_t iy = bbox.min.y(); iy <= bbox.max.y(); ++ iy)
|
|
|
|
for (coord_t ix = bbox.min.x(); ix <= bbox.max.x(); ++ ix)
|
|
|
|
if (! visitor(iy, ix))
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2021-01-11 09:23:56 +00:00
|
|
|
std::pair<std::vector<std::pair<size_t, size_t>>::const_iterator, std::vector<std::pair<size_t, size_t>>::const_iterator> cell_data_range(coord_t row, coord_t col) const
|
2019-08-21 12:52:22 +00:00
|
|
|
{
|
2021-01-11 09:23:56 +00:00
|
|
|
assert(row >= 0 && size_t(row) < m_rows);
|
|
|
|
assert(col >= 0 && size_t(col) < m_cols);
|
2019-08-21 12:52:22 +00:00
|
|
|
const EdgeGrid::Grid::Cell &cell = m_cells[row * m_cols + col];
|
|
|
|
return std::make_pair(m_cell_data.begin() + cell.begin, m_cell_data.begin() + cell.end);
|
|
|
|
}
|
|
|
|
|
|
|
|
std::pair<const Slic3r::Point&, const Slic3r::Point&> segment(const std::pair<size_t, size_t> &contour_and_segment_idx) const
|
|
|
|
{
|
2021-02-05 10:20:04 +00:00
|
|
|
const Contour &contour = m_contours[contour_and_segment_idx.first];
|
|
|
|
size_t iseg = contour_and_segment_idx.second;
|
|
|
|
return std::pair<const Slic3r::Point&, const Slic3r::Point&>(contour.segment_start(iseg), contour.segment_end(iseg));
|
2020-11-17 14:18:19 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
Line line(const std::pair<size_t, size_t> &contour_and_segment_idx) const
|
|
|
|
{
|
2021-02-05 10:20:04 +00:00
|
|
|
const Contour &contour = m_contours[contour_and_segment_idx.first];
|
|
|
|
size_t iseg = contour_and_segment_idx.second;
|
|
|
|
return Line(contour.segment_start(iseg), contour.segment_end(iseg));
|
2019-08-21 12:52:22 +00:00
|
|
|
}
|
|
|
|
|
2016-09-12 14:25:15 +00:00
|
|
|
protected:
|
2016-10-17 16:06:38 +00:00
|
|
|
struct Cell {
|
|
|
|
Cell() : begin(0), end(0) {}
|
|
|
|
size_t begin;
|
|
|
|
size_t end;
|
|
|
|
};
|
|
|
|
|
2016-09-12 14:25:15 +00:00
|
|
|
void create_from_m_contours(coord_t resolution);
|
2016-10-17 16:06:38 +00:00
|
|
|
#if 0
|
|
|
|
bool line_cell_intersect(const Point &p1, const Point &p2, const Cell &cell);
|
|
|
|
#endif
|
2016-11-29 18:28:33 +00:00
|
|
|
bool cell_inside_or_crossing(int r, int c) const
|
|
|
|
{
|
2019-06-25 11:06:04 +00:00
|
|
|
if (r < 0 || (size_t)r >= m_rows ||
|
|
|
|
c < 0 || (size_t)c >= m_cols)
|
2016-11-29 18:28:33 +00:00
|
|
|
// The cell is outside the domain. Hoping that the contours were correctly oriented, so
|
|
|
|
// there is a CCW outmost contour so the out of domain cells are outside.
|
|
|
|
return false;
|
|
|
|
const Cell &cell = m_cells[r * m_cols + c];
|
|
|
|
return
|
|
|
|
(cell.begin < cell.end) ||
|
|
|
|
(! m_signed_distance_field.empty() && m_signed_distance_field[r * (m_cols + 1) + c] <= 0.f);
|
|
|
|
}
|
2016-09-12 14:25:15 +00:00
|
|
|
|
|
|
|
// Bounding box around the contours.
|
|
|
|
BoundingBox m_bbox;
|
|
|
|
// Grid dimensions.
|
|
|
|
coord_t m_resolution;
|
2021-02-04 14:48:36 +00:00
|
|
|
size_t m_rows = 0;
|
|
|
|
size_t m_cols = 0;
|
2016-09-12 14:25:15 +00:00
|
|
|
|
|
|
|
// Referencing the source contours.
|
|
|
|
// This format allows one to work with any Slic3r fixed point contour format
|
|
|
|
// (Polygon, ExPolygon, ExPolygonCollection etc).
|
2021-02-05 10:20:04 +00:00
|
|
|
std::vector<Contour> m_contours;
|
2016-09-12 14:25:15 +00:00
|
|
|
|
|
|
|
// Referencing a contour and a line segment of m_contours.
|
2016-09-13 13:15:44 +00:00
|
|
|
std::vector<std::pair<size_t, size_t> > m_cell_data;
|
2016-09-12 14:25:15 +00:00
|
|
|
|
|
|
|
// Full grid of cells.
|
|
|
|
std::vector<Cell> m_cells;
|
|
|
|
|
|
|
|
// Distance field derived from the edge grid, seed filled by the Danielsson chamfer metric.
|
|
|
|
// May be empty.
|
|
|
|
std::vector<float> m_signed_distance_field;
|
|
|
|
};
|
|
|
|
|
|
|
|
// Debugging utility. Save the signed distance field.
|
2020-11-26 08:01:27 +00:00
|
|
|
extern void save_png(const Grid &grid, const BoundingBox &bbox, coord_t resolution, const char *path, size_t scale = 1);
|
2016-09-12 14:25:15 +00:00
|
|
|
|
|
|
|
} // namespace EdgeGrid
|
2018-10-11 12:13:52 +00:00
|
|
|
|
|
|
|
// Find all pairs of intersectiong edges from the set of polygons.
|
|
|
|
extern std::vector<std::pair<EdgeGrid::Grid::ContourEdge, EdgeGrid::Grid::ContourEdge>> intersecting_edges(const Polygons &polygons);
|
|
|
|
|
|
|
|
// Find all pairs of intersectiong edges from the set of polygons, highlight them in an SVG.
|
|
|
|
extern void export_intersections_to_svg(const std::string &filename, const Polygons &polygons);
|
|
|
|
|
2016-09-12 14:25:15 +00:00
|
|
|
} // namespace Slic3r
|
|
|
|
|
|
|
|
#endif /* slic3r_EdgeGrid_hpp_ */
|