3DPrinting/PrusaSlicer-NonPlainar
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Add elephant foot compensation to SLA print

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Work in progress


Convert efc input to the right scaling


Apply EFC on the slice index to make it visible in the preview.
This commit is contained in:
tamasmeszaros 2020-02-06 14:09:48 +01:00
parent f8c5855d55
commit 96d5c8c35d
8 changed files with 51 additions and 4 deletions
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21
src/libslic3r/ElephantFootCompensation.cpp
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@ -524,11 +524,10 @@ static inline void smooth_compensation_banded(const Points &contour, float band,
}
}
ExPolygon elephant_foot_compensation(const ExPolygon &input_expoly, const Flow &external_perimeter_flow, const double compensation)
ExPolygon elephant_foot_compensation(const ExPolygon &input_expoly, double min_contour_width, const double compensation)
{
// The contour shall be wide enough to apply the external perimeter plus compensation on both sides.
double min_contour_width = double(external_perimeter_flow.scaled_width() + external_perimeter_flow.scaled_spacing());
double scaled_compensation = scale_(compensation);
min_contour_width = scale_(min_contour_width);
double min_contour_width_compensated = min_contour_width + 2. * scaled_compensation;
// Make the search radius a bit larger for the averaging in contour_distance over a fan of rays to work.
double search_radius = min_contour_width_compensated + min_contour_width * 0.5;
@ -597,6 +596,13 @@ ExPolygon elephant_foot_compensation(const ExPolygon &input_expoly, const Flow &
return out;
}
ExPolygon elephant_foot_compensation(const ExPolygon &input, const Flow &external_perimeter_flow, const double compensation)
{
// The contour shall be wide enough to apply the external perimeter plus compensation on both sides.
double min_contour_width = double(external_perimeter_flow.width + external_perimeter_flow.spacing());
return elephant_foot_compensation(input, min_contour_width, compensation);
}
ExPolygons elephant_foot_compensation(const ExPolygons &input, const Flow &external_perimeter_flow, const double compensation)
{
ExPolygons out;
@ -606,4 +612,13 @@ ExPolygons elephant_foot_compensation(const ExPolygons &input, const Flow &exter
return out;
}
ExPolygons elephant_foot_compensation(const ExPolygons &input, double min_contour_width, const double compensation)
{
ExPolygons out;
out.reserve(input.size());
for (const ExPolygon &expoly : input)
out.emplace_back(elephant_foot_compensation(expoly, min_contour_width, compensation));
return out;
}
} // namespace Slic3r

2
src/libslic3r/ElephantFootCompensation.hpp
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@ -8,6 +8,8 @@ namespace Slic3r {
class Flow;
ExPolygon elephant_foot_compensation(const ExPolygon &input, double min_countour_width, const double compensation);
ExPolygons elephant_foot_compensation(const ExPolygons &input, double min_countour_width, const double compensation);
ExPolygon elephant_foot_compensation(const ExPolygon &input, const Flow &external_perimeter_flow, const double compensation);
ExPolygons elephant_foot_compensation(const ExPolygons &input, const Flow &external_perimeter_flow, const double compensation);

10
src/libslic3r/PrintConfig.cpp
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@ -2442,6 +2442,16 @@ void PrintConfigDef::init_sla_params()
"to the sign of the correction.");
def->mode = comExpert;
def->set_default_value(new ConfigOptionFloat(0.0));
def = this->add("elefant_foot_compensation", coFloat);
def->label = L("Elephant foot compensation");
def->category = L("Advanced");
def->tooltip = L("The first layer will be shrunk in the XY plane by the configured value "
"to compensate for the 1st layer squish aka an Elephant Foot effect.");
def->sidetext = L("mm");
def->min = 0;
def->mode = comAdvanced;
def->set_default_value(new ConfigOptionFloat(0.2));
def = this->add("gamma_correction", coFloat);
def->label = L("Printer gamma correction");

2
src/libslic3r/PrintConfig.hpp
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@ -1175,6 +1175,7 @@ public:
ConfigOptionBool display_mirror_y;
ConfigOptionFloats relative_correction;
ConfigOptionFloat absolute_correction;
ConfigOptionFloat elefant_foot_compensation;
ConfigOptionFloat gamma_correction;
ConfigOptionFloat fast_tilt_time;
ConfigOptionFloat slow_tilt_time;
@ -1198,6 +1199,7 @@ protected:
OPT_PTR(display_orientation);
OPT_PTR(relative_correction);
OPT_PTR(absolute_correction);
OPT_PTR(elefant_foot_compensation);
OPT_PTR(gamma_correction);
OPT_PTR(fast_tilt_time);
OPT_PTR(slow_tilt_time);

1
src/libslic3r/SLAPrint.cpp
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@ -785,6 +785,7 @@ bool SLAPrint::invalidate_state_by_config_options(const std::vector<t_config_opt
"material_correction",
"relative_correction",
"absolute_correction",
"elefant_foot_compensation",
"gamma_correction"
};

15
src/libslic3r/SLAPrintSteps.cpp
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@ -8,6 +8,8 @@
#include <libslic3r/SLA/Pad.hpp>
#include <libslic3r/SLA/SupportPointGenerator.hpp>
#include <libslic3r/ElephantFootCompensation.hpp>
#include <libslic3r/ClipperUtils.hpp>
// For geometry algorithms with native Clipper types (no copies and conversions)
@ -238,6 +240,13 @@ void SLAPrint::Steps::slice_model(SLAPrintObject &po)
auto mit = slindex_it;
double doffs = m_print->m_printer_config.absolute_correction.getFloat();
coord_t clpr_offs = scaled(doffs);
if (!po.m_model_height_levels.empty() && po.m_model_height_levels[0] < ilh) {
auto &first_sl = po.m_model_slices[0];
double compensation = m_print->m_printer_config.elefant_foot_compensation.getFloat();
first_sl = elephant_foot_compensation(first_sl, 0., compensation);
}
for(size_t id = 0;
id < po.m_model_slices.size() && mit != po.m_slice_index.end();
id++)
@ -449,6 +458,12 @@ void SLAPrint::Steps::slice_supports(SLAPrintObject &po) {
sd->support_slices = sd->support_tree_ptr->slice(
heights, float(po.config().slice_closing_radius.value));
if (!heights.empty() && heights[0] < ilh) {
auto &first_sl = sd->support_slices[0];
double compensation = m_print->m_printer_config.elefant_foot_compensation.getFloat();
first_sl = elephant_foot_compensation(first_sl, 0., compensation);
}
}
double doffs = m_print->m_printer_config.absolute_correction.getFloat();

1
src/slic3r/GUI/Preset.cpp
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@ -557,6 +557,7 @@ const std::vector<std::string>& Preset::sla_printer_options()
"fast_tilt_time", "slow_tilt_time", "area_fill",
"relative_correction",
"absolute_correction",
"elefant_foot_compensation",
"gamma_correction",
"min_exposure_time", "max_exposure_time",
"min_initial_exposure_time", "max_initial_exposure_time",

3
src/slic3r/GUI/Tab.cpp
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@ -2112,8 +2112,9 @@ void TabPrinter::build_sla()
}
optgroup->append_line(line);
optgroup->append_single_option_line("absolute_correction");
optgroup->append_single_option_line("elefant_foot_compensation");
optgroup->append_single_option_line("gamma_correction");
optgroup = page->new_optgroup(_(L("Exposure")));
optgroup->append_single_option_line("min_exposure_time");
optgroup->append_single_option_line("max_exposure_time");