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ENH: fix for STUDIO-881

Browse source 
Thanks prusa

Signed-off-by: salt.wei <salt.wei@bambulab.com>
Change-Id: I2e1c1088d29dd5401016ca41d3ed6dec87e0acd1
This commit is contained in:
salt.wei 2023-03-13 17:33:02 +08:00 • committed by Lane.Wei
parent b4ffa91cb4
commit 61b271f379
31 changed files with 703 additions and 471 deletions
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208
src/libslic3r/ExPolygon.hpp
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@ -1,6 +1,7 @@
#ifndef slic3r_ExPolygon_hpp_
#define slic3r_ExPolygon_hpp_
#include "Point.hpp"
#include "libslic3r.h"
#include "Polygon.hpp"
#include "Polyline.hpp"
@ -9,13 +10,7 @@
namespace Slic3r {
class ExPolygon;
typedef std::vector<ExPolygon> ExPolygons;
typedef enum SimplifyMethod_ {
SimplifyMethodDP=0,
SimplifyMethodVisvalingam,
SimplifyMethodConcave
}SimplifyMethod;
using ExPolygons = std::vector<ExPolygon>;
class ExPolygon
{
@ -37,14 +32,12 @@ public:
ExPolygon& operator=(const ExPolygon &other) = default;
ExPolygon& operator=(ExPolygon &&other) = default;
Polygon contour;
Polygons holes;
Polygon contour; //CCW
Polygons holes; //CW
operator Points() const;
operator Polygons() const;
operator Polylines() const;
void clear() { contour.points.clear(); holes.clear(); }
void scale(double factor);
void scale(double factor_x, double factor_y);
void translate(double x, double y) { this->translate(Point(coord_t(x), coord_t(y))); }
void translate(const Point &vector);
void rotate(double angle);
@ -58,21 +51,29 @@ public:
bool contains(const Line &line) const;
bool contains(const Polyline &polyline) const;
bool contains(const Polylines &polylines) const;
bool contains(const Point &point) const;
bool contains_b(const Point &point) const;
bool has_boundary_point(const Point &point) const;
bool contains(const Point &point, bool border_result = true) const;
// Approximate on boundary test.
bool on_boundary(const Point &point, double eps) const;
// Projection of a point onto the polygon.
Point point_projection(const Point &point) const;
// Does this expolygon overlap another expolygon?
// Either the ExPolygons intersect, or one is fully inside the other,
// and it is not inside a hole of the other expolygon.
// The test may not be commutative if the two expolygons touch by a boundary only,
// see unit test SCENARIO("Clipper diff with polyline", "[Clipper]").
// Namely expolygons touching at a vertical boundary are considered overlapping, while expolygons touching
// at a horizontal boundary are NOT considered overlapping.
bool overlaps(const ExPolygon &other) const;
void simplify_p(double tolerance, Polygons* polygons, SimplifyMethod method = SimplifyMethodDP) const;
Polygons simplify_p(double tolerance, SimplifyMethod method = SimplifyMethodDP) const;
ExPolygons simplify(double tolerance, SimplifyMethod method = SimplifyMethodDP) const;
void simplify(double tolerance, ExPolygons* expolygons, SimplifyMethod method = SimplifyMethodDP) const;
void medial_axis(double max_width, double min_width, ThickPolylines* polylines) const;
void medial_axis(double max_width, double min_width, Polylines* polylines) const;
void simplify_p(double tolerance, Polygons* polygons) const;
Polygons simplify_p(double tolerance) const;
ExPolygons simplify(double tolerance) const;
void simplify(double tolerance, ExPolygons* expolygons) const;
void medial_axis(double min_width, double max_width, ThickPolylines* polylines) const;
void medial_axis(double min_width, double max_width, Polylines* polylines) const;
Polylines medial_axis(double min_width, double max_width) const
{ Polylines out; this->medial_axis(min_width, max_width, &out); return out; }
Lines lines() const;
// Number of contours (outer contour with holes).
@ -84,6 +85,25 @@ public:
inline bool operator==(const ExPolygon &lhs, const ExPolygon &rhs) { return lhs.contour == rhs.contour && lhs.holes == rhs.holes; }
inline bool operator!=(const ExPolygon &lhs, const ExPolygon &rhs) { return lhs.contour != rhs.contour || lhs.holes != rhs.holes; }
inline size_t count_points(const ExPolygons &expolys)
{
size_t n_points = 0;
for (const auto &expoly : expolys) {
n_points += expoly.contour.points.size();
for (const auto &hole : expoly.holes)
n_points += hole.points.size();
}
return n_points;
}
inline size_t count_points(const ExPolygon &expoly)
{
size_t n_points = expoly.contour.points.size();
for (const auto &hole : expoly.holes)
n_points += hole.points.size();
return n_points;
}
// Count a nuber of polygons stored inside the vector of expolygons.
// Useful for allocating space for polygons when converting expolygons to polygons.
inline size_t number_polygons(const ExPolygons &expolys)
@ -96,11 +116,8 @@ inline size_t number_polygons(const ExPolygons &expolys)
inline Lines to_lines(const ExPolygon &src)
{
size_t n_lines = src.contour.points.size();
for (size_t i = 0; i < src.holes.size(); ++ i)
n_lines += src.holes[i].points.size();
Lines lines;
lines.reserve(n_lines);
lines.reserve(count_points(src));
for (size_t i = 0; i <= src.holes.size(); ++ i) {
const Polygon &poly = (i == 0) ? src.contour : src.holes[i - 1];
for (Points::const_iterator it = poly.points.begin(); it != poly.points.end()-1; ++it)
@ -112,14 +129,8 @@ inline Lines to_lines(const ExPolygon &src)
inline Lines to_lines(const ExPolygons &src)
{
size_t n_lines = 0;
for (ExPolygons::const_iterator it_expoly = src.begin(); it_expoly != src.end(); ++ it_expoly) {
n_lines += it_expoly->contour.points.size();
for (size_t i = 0; i < it_expoly->holes.size(); ++ i)
n_lines += it_expoly->holes[i].points.size();
}
Lines lines;
lines.reserve(n_lines);
lines.reserve(count_points(src));
for (ExPolygons::const_iterator it_expoly = src.begin(); it_expoly != src.end(); ++ it_expoly) {
for (size_t i = 0; i <= it_expoly->holes.size(); ++ i) {
const Points &points = ((i == 0) ? it_expoly->contour : it_expoly->holes[i - 1]).points;
@ -131,6 +142,70 @@ inline Lines to_lines(const ExPolygons &src)
return lines;
}
// Line is from point index(see to_points) to next point.
// Next point of last point in polygon is first polygon point.
inline Linesf to_linesf(const ExPolygons &src, uint32_t count_lines = 0)
{
assert(count_lines == 0 || count_lines == count_points(src));
if (count_lines == 0) count_lines = count_points(src);
Linesf lines;
lines.reserve(count_lines);
Vec2d prev_pd;
auto to_lines = [&lines, &prev_pd](const Points &pts) {
assert(pts.size() >= 3);
if (pts.size() < 2) return;
bool is_first = true;
for (const Point &p : pts) {
Vec2d pd = p.cast<double>();
if (is_first) is_first = false;
else lines.emplace_back(prev_pd, pd);
prev_pd = pd;
}
lines.emplace_back(prev_pd, pts.front().cast<double>());
};
for (const ExPolygon& expoly: src) {
to_lines(expoly.contour.points);
for (const Polygon &hole : expoly.holes)
to_lines(hole.points);
}
assert(lines.size() == count_lines);
return lines;
}
inline Linesf to_unscaled_linesf(const ExPolygons &src)
{
Linesf lines;
lines.reserve(count_points(src));
for (ExPolygons::const_iterator it_expoly = src.begin(); it_expoly != src.end(); ++ it_expoly) {
for (size_t i = 0; i <= it_expoly->holes.size(); ++ i) {
const Points &points = ((i == 0) ? it_expoly->contour : it_expoly->holes[i - 1]).points;
Vec2d unscaled_a = unscaled(points.front());
Vec2d unscaled_b = unscaled_a;
for (Points::const_iterator it = points.begin()+1; it != points.end(); ++it){
unscaled_b = unscaled(*(it));
lines.push_back(Linef(unscaled_a, unscaled_b));
unscaled_a = unscaled_b;
}
lines.push_back(Linef(unscaled_a, unscaled(points.front())));
}
}
return lines;
}
inline Points to_points(const ExPolygons &src)
{
Points points;
size_t count = count_points(src);
points.reserve(count);
for (const ExPolygon &expolygon : src) {
append(points, expolygon.contour.points);
for (const Polygon &hole : expolygon.holes)
append(points, hole.points);
}
return points;
}
inline Polylines to_polylines(const ExPolygon &src)
{
Polylines polylines;
@ -175,10 +250,10 @@ inline Polylines to_polylines(ExPolygon &&src)
Polyline &pl = polylines[idx ++];
pl.points = std::move(src.contour.points);
pl.points.push_back(pl.points.front());
for (Polygons::const_iterator ith = src.holes.begin(); ith != src.holes.end(); ++ith) {
for (auto ith = src.holes.begin(); ith != src.holes.end(); ++ith) {
Polyline &pl = polylines[idx ++];
pl.points = std::move(ith->points);
pl.points.push_back(ith->points.front());
pl.points.push_back(pl.points.front());
}
assert(idx == polylines.size());
return polylines;
@ -189,14 +264,14 @@ inline Polylines to_polylines(ExPolygons &&src)
Polylines polylines;
polylines.assign(number_polygons(src), Polyline());
size_t idx = 0;
for (ExPolygons::const_iterator it = src.begin(); it != src.end(); ++it) {
for (auto it = src.begin(); it != src.end(); ++it) {
Polyline &pl = polylines[idx ++];
pl.points = std::move(it->contour.points);
pl.points.push_back(pl.points.front());
for (Polygons::const_iterator ith = it->holes.begin(); ith != it->holes.end(); ++ith) {
for (auto ith = it->holes.begin(); ith != it->holes.end(); ++ith) {
Polyline &pl = polylines[idx ++];
pl.points = std::move(ith->points);
pl.points.push_back(ith->points.front());
pl.points.push_back(pl.points.front());
}
}
assert(idx == polylines.size());
@ -250,8 +325,9 @@ inline Polygons to_polygons(ExPolygon &&src)
Polygons polygons;
polygons.reserve(src.holes.size() + 1);
polygons.push_back(std::move(src.contour));
std::move(std::begin(src.holes), std::end(src.holes), std::back_inserter(polygons));
src.holes.clear();
polygons.insert(polygons.end(),
std::make_move_iterator(src.holes.begin()),
std::make_move_iterator(src.holes.end()));
return polygons;
}
@ -259,10 +335,11 @@ inline Polygons to_polygons(ExPolygons &&src)
{
Polygons polygons;
polygons.reserve(number_polygons(src));
for (ExPolygons::iterator it = src.begin(); it != src.end(); ++it) {
polygons.push_back(std::move(it->contour));
std::move(std::begin(it->holes), std::end(it->holes), std::back_inserter(polygons));
it->holes.clear();
for (ExPolygon& expoly: src) {
polygons.push_back(std::move(expoly.contour));
polygons.insert(polygons.end(),
std::make_move_iterator(expoly.holes.begin()),
std::make_move_iterator(expoly.holes.end()));
}
return polygons;
}
@ -285,6 +362,16 @@ inline ExPolygons to_expolygons(Polygons &&polys)
return ex_polys;
}
inline Points to_points(const ExPolygon &expoly)
{
Points out;
out.reserve(count_points(expoly));
append(out, expoly.contour.points);
for (const Polygon &hole : expoly.holes)
append(out, hole.points);
return out;
}
inline void polygons_append(Polygons &dst, const ExPolygon &src)
{
dst.reserve(dst.size() + src.holes.size() + 1);
@ -304,18 +391,20 @@ inline void polygons_append(Polygons &dst, const ExPolygons &src)
inline void polygons_append(Polygons &dst, ExPolygon &&src)
{
dst.reserve(dst.size() + src.holes.size() + 1);
dst.push_back(std::move(src.contour));
std::move(std::begin(src.holes), std::end(src.holes), std::back_inserter(dst));
src.holes.clear();
dst.push_back(std::move(src.contour));
dst.insert(dst.end(),
std::make_move_iterator(src.holes.begin()),
std::make_move_iterator(src.holes.end()));
}
inline void polygons_append(Polygons &dst, ExPolygons &&src)
{
dst.reserve(dst.size() + number_polygons(src));
for (ExPolygons::iterator it = src.begin(); it != src.end(); ++ it) {
dst.push_back(std::move(it->contour));
std::move(std::begin(it->holes), std::end(it->holes), std::back_inserter(dst));
it->holes.clear();
for (ExPolygon& expoly: src) {
dst.push_back(std::move(expoly.contour));
dst.insert(dst.end(),
std::make_move_iterator(expoly.holes.begin()),
std::make_move_iterator(expoly.holes.end()));
}
}
@ -329,21 +418,22 @@ inline void expolygons_append(ExPolygons &dst, ExPolygons &&src)
if (dst.empty()) {
dst = std::move(src);
} else {
std::move(std::begin(src), std::end(src), std::back_inserter(dst));
src.clear();
dst.insert(dst.end(),
std::make_move_iterator(src.begin()),
std::make_move_iterator(src.end()));
}
}
inline void expolygons_rotate(ExPolygons &expolys, double angle)
{
for (ExPolygons::iterator p = expolys.begin(); p != expolys.end(); ++p)
p->rotate(angle);
for (ExPolygon &expoly : expolys)
expoly.rotate(angle);
}
inline bool expolygons_contain(ExPolygons &expolys, const Point &pt)
inline bool expolygons_contain(ExPolygons &expolys, const Point &pt, bool border_result = true)
{
for (ExPolygons::iterator p = expolys.begin(); p != expolys.end(); ++p)
if (p->contains(pt))
for (const ExPolygon &expoly : expolys)
if (expoly.contains(pt, border_result))
return true;
return false;
}
@ -357,6 +447,10 @@ inline ExPolygons expolygons_simplify(const ExPolygons &expolys, double toleranc
return out;
}
// Do expolygons match? If they match, they must have the same topology,
// however their contours may be rotated.
bool expolygons_match(const ExPolygon &l, const ExPolygon &r);
BoundingBox get_extents(const ExPolygon &expolygon);
BoundingBox get_extents(const ExPolygons &expolygons);
BoundingBox get_extents_rotated(const ExPolygon &poly, double angle);