3DPrinting/PrusaSlicer-NonPlainar
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minor changes, more transparent parameters settings

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This commit is contained in:
PavelMikus 2022-02-03 12:37:35 +01:00
parent 45b49ad545
commit 38a6e231f2
2 changed files with 30 additions and 30 deletions
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55
src/libslic3r/GCode/SeamPlacerNG.cpp
View File

@ -68,16 +68,16 @@ private:
};
Vec3d sample_sphere_uniform(const Vec2f &samples) {
float term_one = 2.0f * M_PIf32 * samples.x();
float term_two = 2.0f * sqrt(samples.y() - samples.y() * samples.y());
return {cos(term_one) * term_two, sin(term_one) * term_two,
float term1 = 2.0f * M_PIf32 * samples.x();
float term2 = 2.0f * sqrt(samples.y() - samples.y() * samples.y());
return {cos(term1) * term2, sin(term1) * term2,
1.0f - 2.0f * samples.y()};
}
Vec3d sample_power_cosine_hemisphere(const Vec2f &samples, float power) {
const float term1 = 2.f * M_PIf32 * samples.x();
const float term2 = pow(samples.y(), 1.f / (power + 1.f));
const float term3 = sqrt(1.f - term2 * term2);
float term1 = 2.f * M_PIf32 * samples.x();
float term2 = pow(samples.y(), 1.f / (power + 1.f));
float term3 = sqrt(1.f - term2 * term2);
return Vec3d(cos(term1) * term3, sin(term1) * term3, term2);
}
@ -118,7 +118,7 @@ std::vector<HitInfo> raycast_visibility(size_t ray_count,
for (size_t index = r.begin(); index < r.end(); ++index) {
Vec3d global_ray_dir = sample_sphere_uniform(global_dir_random_samples[index]);
Vec3d ray_origin = (vision_sphere_center - global_ray_dir * vision_sphere_raidus);
Vec3d local_dir = sample_power_cosine_hemisphere(local_dir_random_samples[index], 2.0);
Vec3d local_dir = sample_power_cosine_hemisphere(local_dir_random_samples[index], SeamPlacer::cosine_hemisphere_sampling_power);
Frame f;
f.set_from_z(global_ray_dir);
@ -153,7 +153,7 @@ std::vector<HitInfo> raycast_visibility(size_t ray_count,
<< "PM: raycast visibility for " << ray_count << " rays: end";
//TODO disable, only debug code
//#ifdef 0
#ifdef DEBUG_FILES
its_write_obj(triangles, "triangles.obj");
Slic3r::CNumericLocalesSetter locales_setter;
@ -167,7 +167,7 @@ std::vector<HitInfo> raycast_visibility(size_t ray_count,
fprintf(fp, "v %f %f %f \n", hit_points[i].m_position[0], hit_points[i].m_position[1],
hit_points[i].m_position[2]);
fclose(fp);
//#endif
#endif
return hit_points;
}
@ -254,16 +254,16 @@ void SeamPlacer::init(const Print &print) {
[&](tbb::blocked_range<size_t> r) {
for (size_t index = r.begin(); index < r.end(); ++index) {
SeamCandidate &perimeter_point = perimeter_points[index];
auto filter = [&](size_t hit_point_index) {
const HitInfo &hit_point = hit_points[hit_point_index];
Vec3d tolerance_center = hit_point.m_position - hit_point.m_surface_normal * EPSILON;
double signed_distance_from_hit_place = (perimeter_point.m_position - tolerance_center).dot(
hit_point.m_surface_normal);
return signed_distance_from_hit_place >= 0 && signed_distance_from_hit_place <= 1.0;
};
// auto filter = [&](size_t hit_point_index) {
// const HitInfo &hit_point = hit_points[hit_point_index];
// Vec3d tolerance_center = hit_point.m_position - hit_point.m_surface_normal * EPSILON;
// double signed_distance_from_hit_place = (perimeter_point.m_position - tolerance_center).dot(
// hit_point.m_surface_normal);
// return signed_distance_from_hit_place >= 0 && signed_distance_from_hit_place <= 1.0;
// };
auto nearby_points = find_nearby_points(hit_points_tree, perimeter_point.m_position,
considered_hits_distance, filter);
considered_hits_distance);
double visibility = 0;
for (const auto &hit_point_index : nearby_points) {
double distance =
@ -275,8 +275,7 @@ void SeamPlacer::init(const Print &print) {
}
});
//TODO disable, only debug code
//#ifdef 0
#ifdef DEBUG_FILES
Slic3r::CNumericLocalesSetter locales_setter;
FILE *fp = boost::nowide::fopen("perimeters.obj", "w");
if (fp == nullptr) {
@ -285,19 +284,19 @@ void SeamPlacer::init(const Print &print) {
}
for (size_t i = 0; i < perimeter_points.size(); ++i)
fprintf(fp, "v %f %f %f %f\n", perimeter_points[i].m_position[0], perimeter_points[i].m_position[1],
perimeter_points[i].m_position[2], perimeter_points[i].m_visibility);
fprintf(fp, "v %f %f %f %f\n", perimeter_points[i].m_position[0], perimeter_points[i].m_position[1],
perimeter_points[i].m_position[2], perimeter_points[i].m_visibility);
fclose(fp);
//#endif
#endif
BOOST_LOG_TRIVIAL(debug)
<< "PM: gather visibility data into perimeter points : end";
// Build KD tree with seam candidates
auto functor = KDTreeCoordinateFunctor { &perimeter_points };
m_perimeter_points_trees_per_object.emplace(std::piecewise_construct, std::forward_as_tuple(po),
std::forward_as_tuple(functor, m_perimeter_points_per_object[po].size()));
// SeamPlacer::PointTree &perimeter_points_tree = m_perimeter_points_trees_per_object.find(po)->second;
BOOST_LOG_TRIVIAL(debug)
<< "PM: gather visibility data into perimeter points : end";
// SeamPlacer::PointTree &perimeter_points_tree = m_perimeter_points_trees_per_object.find(po)->second;
BOOST_LOG_TRIVIAL(debug)
<< "PM: find seam for each perimeter polygon and store its position in each member of the polygon : start";
@ -315,7 +314,7 @@ void SeamPlacer::init(const Print &print) {
if (start == perimeter_points.size())
return;
//find nearest polygon end after range end; The perimeter_points must end with point with index 0
// start at r.end() -1, because tbb uses exlusive range.
// start at r.end() -1, because tbb uses exlusive range, and we want inclusive range
size_t end = r.end() - 1;
while (perimeter_points[end].m_polygon_index_reverse != 0) {
end++;
@ -327,7 +326,7 @@ void SeamPlacer::init(const Print &print) {
}
});
//Above parallel_for does not consider the first perimeter polygon, so do it additionally
//Above parallel_for does not consider the first perimeter polygon, so add it additionally
pick_seam_point(perimeter_points, 0, perimeter_points[0].m_polygon_index_reverse);
BOOST_LOG_TRIVIAL(debug)

5
src/libslic3r/GCode/SeamPlacerNG.hpp
View File

@ -63,10 +63,11 @@ struct HitInfoCoordinateFunctor {
class SeamPlacer {
using PointTree =
KDTreeIndirect<3, coordf_t, SeamPlacerImpl::KDTreeCoordinateFunctor>;
const size_t ray_count_per_object = 100000;
const double considered_hits_distance = 4.0;
const size_t ray_count_per_object = 150000;
const double considered_hits_distance = 2.0;
public:
static constexpr float cosine_hemisphere_sampling_power = 1.5;
std::unordered_map<const PrintObject*, PointTree> m_perimeter_points_trees_per_object;
std::unordered_map<const PrintObject*, std::vector<SeamPlacerImpl::SeamCandidate>> m_perimeter_points_per_object;