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Hollowing voxel_scale now considers input model volume

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This commit is contained in:
tamasmeszaros 2022-04-08 13:59:09 +02:00
parent e405b0ef4a
commit d1b161b281
1 changed files with 19 additions and 4 deletions
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23
src/libslic3r/SLA/Hollowing.cpp
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@ -120,8 +120,9 @@ InteriorPtr generate_interior(const TriangleMesh & mesh,
const HollowingConfig &hc,
const JobController & ctl)
{
static const double MIN_OVERSAMPL = 3.5;
static const double MAX_OVERSAMPL = 8.;
static constexpr double MIN_OVERSAMPL = 1.;
static constexpr double MAX_OVERSAMPL = 10.;
static constexpr double UNIT_VOLUME = 500000; // empiric
// I can't figure out how to increase the grid resolution through openvdb
// API so the model will be scaled up before conversion and the result
@ -129,8 +130,22 @@ InteriorPtr generate_interior(const TriangleMesh & mesh,
// scales the whole geometry down, and doesn't increase the number of
// voxels.
//
// max 8x upscale, min is native voxel size
auto voxel_scale = MIN_OVERSAMPL + (MAX_OVERSAMPL - MIN_OVERSAMPL) * hc.quality;
// the voxel_scale will always reside between MIN_OVERSAMPL and
// a dynamically derived maximum (based on the model volume)
// which is always less than MAX_OVERSAMPL. The quality parameter will
// control the actual position of the scaling between this allowed range.
//
// For smaller models, the maximum can get up to MAX_OVERSAMPL
// for bigger models (reference unit volume is VOL_SCALING) the maximum
// is gradually decreased.
double mesh_vol = its_volume(mesh.its);
double sc_divider = std::max(1.0, (mesh_vol / UNIT_VOLUME));
double max_oversampl_scaled = std::max(MIN_OVERSAMPL,
MAX_OVERSAMPL / sc_divider);
auto voxel_scale = MIN_OVERSAMPL + (max_oversampl_scaled - MIN_OVERSAMPL) * hc.quality;
BOOST_LOG_TRIVIAL(debug) << "Hollowing: max oversampl will be: " << max_oversampl_scaled;
BOOST_LOG_TRIVIAL(debug) << "Hollowing: voxel scale will be: " << voxel_scale;
BOOST_LOG_TRIVIAL(debug) << "Hollowing: mesh volume is: " << mesh_vol;
InteriorPtr interior =
generate_interior_verbose(mesh, ctl, hc.min_thickness, voxel_scale,