3DPrinting/PrusaSlicer-NonPlainar
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Fix concave hull having holes.

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This commit is contained in:
tamasmeszaros 2019-10-09 14:59:09 +02:00
parent a6a7303e25
commit 175b6fd9f5
6 changed files with 292 additions and 201 deletions
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56
tests/sla_print/sla_print_tests.cpp
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@ -17,6 +17,7 @@
#include "libslic3r/SLA/SLASupportTreeBuildsteps.hpp"
#include "libslic3r/SLA/SLAAutoSupports.hpp"
#include "libslic3r/SLA/SLARaster.hpp"
#include "libslic3r/SLA/ConcaveHull.hpp"
#include "libslic3r/MTUtils.hpp"
#include "libslic3r/SVG.hpp"
@ -79,6 +80,43 @@ struct PadByproducts
TriangleMesh mesh;
};
void _test_concave_hull(const Polygons &hull, const ExPolygons &polys)
{
REQUIRE(polys.size() >=hull.size());
double polys_area = 0;
for (const ExPolygon &p : polys) polys_area += p.area();
double cchull_area = 0;
for (const Slic3r::Polygon &p : hull) cchull_area += p.area();
REQUIRE(cchull_area >= Approx(polys_area));
size_t cchull_holes = 0;
for (const Slic3r::Polygon &p : hull)
cchull_holes += p.is_clockwise() ? 1 : 0;
REQUIRE(cchull_holes == 0);
Polygons intr = diff(to_polygons(polys), hull);
REQUIRE(intr.empty());
}
void test_concave_hull(const ExPolygons &polys) {
sla::PadConfig pcfg;
Slic3r::sla::ConcaveHull cchull{polys, pcfg.max_merge_dist_mm, []{}};
_test_concave_hull(cchull.polygons(), polys);
coord_t delta = scaled(pcfg.brim_size_mm + pcfg.wing_distance());
ExPolygons wafflex = sla::offset_waffle_style_ex(cchull, delta);
Polygons waffl = sla::offset_waffle_style(cchull, delta);
_test_concave_hull(to_polygons(wafflex), polys);
_test_concave_hull(waffl, polys);
}
void test_pad(const std::string & obj_filename,
const sla::PadConfig &padcfg,
PadByproducts & out)
@ -92,6 +130,8 @@ void test_pad(const std::string & obj_filename,
// Create pad skeleton only from the model
Slic3r::sla::pad_blueprint(mesh, out.model_contours);
test_concave_hull(out.model_contours);
REQUIRE_FALSE(out.model_contours.empty());
// Create the pad geometry for the model contours only
@ -257,7 +297,7 @@ void export_failed_case(const std::vector<ExPolygons> &support_slices,
const ExPolygons &sup_slice = support_slices[n];
const ExPolygons &mod_slice = byproducts.model_slices[n];
Polygons intersections = intersection(sup_slice, mod_slice);
std::stringstream ss;
if (!intersections.empty()) {
ss << byproducts.obj_fname << std::setprecision(4) << n << ".svg";
@ -268,7 +308,7 @@ void export_failed_case(const std::vector<ExPolygons> &support_slices,
svg.Close();
}
}
TriangleMesh m;
byproducts.supporttree.retrieve_full_mesh(m);
m.merge(byproducts.input_mesh);
@ -288,7 +328,7 @@ void test_support_model_collision(
// Set head penetration to a small negative value which should ensure that
// the supports will not touch the model body.
supportcfg.head_penetration_mm = -0.15;
// TODO: currently, the tailheads penetrating into the model body do not
// respect the penetration parameter properly. No issues were reported so
// far but we should definitely fix this.
@ -305,7 +345,7 @@ void test_support_model_collision(
bool support_mesh_is_empty =
byproducts.supporttree.retrieve_mesh(sla::MeshType::Pad).empty() &&
byproducts.supporttree.retrieve_mesh(sla::MeshType::Support).empty();
if (support_mesh_is_empty)
REQUIRE(support_slices.empty());
else
@ -320,7 +360,7 @@ void test_support_model_collision(
notouch = notouch && intersections.empty();
}
if (!notouch) export_failed_case(support_slices, byproducts);
REQUIRE(notouch);
@ -359,12 +399,12 @@ template <class I, class II> void test_pairhash()
const I Ibits = int(sizeof(I) * CHAR_BIT);
const II IIbits = int(sizeof(II) * CHAR_BIT);
int bits = IIbits / 2 < Ibits ? Ibits / 2 : Ibits;
if (std::is_signed<I>::value) bits -= 1;
const I Imin = std::is_signed<I>::value ? -I(std::pow(2., bits)) : 0;
const I Imin = 0;
const I Imax = I(std::pow(2., bits) - 1);
std::uniform_int_distribution<I> dis(Imin, Imax);
for (size_t i = 0; i < nums;) {