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Improved stability (fixed crashes) of the Cut by plane function by

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replacing the cut triangulation with freeglu tesselator.
Added performance tracing output of the Cut by plane function.
Added wait cursor to split to parts / objects, object cut, save to AMF/3MF.
This commit is contained in:
bubnikv 2019-02-05 20:23:24 +01:00
parent 3dc6e266ed
commit 8982664551
4 changed files with 27 additions and 37 deletions
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54
src/libslic3r/TriangleMesh.cpp
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@ -1,6 +1,7 @@
#include "TriangleMesh.hpp"
#include "ClipperUtils.hpp"
#include "Geometry.hpp"
#include "Tesselate.hpp"
#include "qhull/src/libqhullcpp/Qhull.h"
#include "qhull/src/libqhullcpp/QhullFacetList.h"
#include "qhull/src/libqhullcpp/QhullVertexSet.h"
@ -1686,6 +1687,7 @@ void TriangleMeshSlicer::cut(float z, TriangleMesh* upper, TriangleMesh* lower)
{
IntersectionLines upper_lines, lower_lines;
BOOST_LOG_TRIVIAL(trace) << "TriangleMeshSlicer::cut - slicing object";
float scaled_z = scale_(z);
for (int facet_idx = 0; facet_idx < this->mesh->stl.stats.number_of_facets; ++ facet_idx) {
stl_facet* facet = &this->mesh->stl.facet_start[facet_idx];
@ -1775,57 +1777,35 @@ void TriangleMeshSlicer::cut(float z, TriangleMesh* upper, TriangleMesh* lower)
}
}
// triangulate holes of upper mesh
if (upper != NULL) {
// compute shape of section
BOOST_LOG_TRIVIAL(trace) << "TriangleMeshSlicer::cut - triangulating upper part";
ExPolygons section;
this->make_expolygons_simple(upper_lines, &section);
// triangulate section
Polygons triangles;
for (ExPolygons::const_iterator expolygon = section.begin(); expolygon != section.end(); ++expolygon)
expolygon->triangulate_p2t(&triangles);
// convert triangles to facets and append them to mesh
for (Polygons::const_iterator polygon = triangles.begin(); polygon != triangles.end(); ++polygon) {
Polygon p = *polygon;
p.reverse();
stl_facet facet;
facet.normal = stl_normal(0, 0, -1.f);
for (size_t i = 0; i <= 2; ++i) {
facet.vertex[i](0) = unscale<float>(p.points[i](0));
facet.vertex[i](1) = unscale<float>(p.points[i](1));
facet.vertex[i](2) = z;
}
Pointf3s triangles = triangulate_expolygons_3df(section, z, true);
stl_facet facet;
facet.normal = stl_normal(0, 0, -1.f);
for (size_t i = 0; i < triangles.size(); ) {
for (size_t j = 0; j < 3; ++ j)
facet.vertex[j] = triangles[i ++].cast<float>();
stl_add_facet(&upper->stl, &facet);
}
}
// triangulate holes of lower mesh
if (lower != NULL) {
// compute shape of section
BOOST_LOG_TRIVIAL(trace) << "TriangleMeshSlicer::cut - triangulating lower part";
ExPolygons section;
this->make_expolygons_simple(lower_lines, &section);
// triangulate section
Polygons triangles;
for (ExPolygons::const_iterator expolygon = section.begin(); expolygon != section.end(); ++expolygon)
expolygon->triangulate_p2t(&triangles);
// convert triangles to facets and append them to mesh
for (Polygons::const_iterator polygon = triangles.begin(); polygon != triangles.end(); ++polygon) {
stl_facet facet;
facet.normal = stl_normal(0, 0, 1.f);
for (size_t i = 0; i <= 2; ++i) {
facet.vertex[i](0) = unscale<float>(polygon->points[i](0));
facet.vertex[i](1) = unscale<float>(polygon->points[i](1));
facet.vertex[i](2) = z;
}
Pointf3s triangles = triangulate_expolygons_3df(section, z, false);
stl_facet facet;
facet.normal = stl_normal(0, 0, -1.f);
for (size_t i = 0; i < triangles.size(); ) {
for (size_t j = 0; j < 3; ++ j)
facet.vertex[j] = triangles[i ++].cast<float>();
stl_add_facet(&lower->stl, &facet);
}
}
// Update the bounding box / sphere of the new meshes.
BOOST_LOG_TRIVIAL(trace) << "TriangleMeshSlicer::cut - updating object sizes";
stl_get_size(&upper->stl);
stl_get_size(&lower->stl);
}