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Porting of Pressure Equalizer feature from Prusa Slicer 2.6.x (#2161)

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* Overhang perimeter handling

Updated code to handle overhang perimeters as an overhang and not as a bridge.

* Preparing to add curled extrusions identification

* Porting curling calculations from Prusa Slier 2.6.1

* Prototype 1 - slowdown extended to detect curled edges and further reduce speed

First prototype of the code submitted.

* Working prototype - 2

Code is now finally working - external perimeters are slowed down as needed when there is likelyhood of curling up.

ToDo:
1. Reslicing the model causes the algorithm not to run - need to find where this fails to trigger the call for this.
2. Slowdown of internal perimeters not working yet.

* Updated to use overhang wall speed instead of bridging speed for this algorithm

* Fixed bug in speed calculation and tweaked parameters for high speed printer

Fixed bug in speed calculation and tweaked parameters for high speed printer

* Attempting to fix "set started" not being set

* Parameter tweak after print tests

* Fixed estimation not running when model is re-sliced.

* Removing debug printf statements and fixed threading flag.

* Fixed threading

* Parameter tweaks following print tests

* Made this as an option in the GUI

* Reintroduced handling of bridges as per original design

* UI line toggling when option makes sense to be visible.

* Fixed bug in field visibility & made it default to off

* Code optimisation

* Initial commit of code from Prusa Slicer 2.6.1

* Ported ExtrusionRole from Prusa Slicer 2.6.1

* fix compile errors

* Update GCode.hpp

* code changes to invoke pressure equalizer

* attempting to trigger pressure equalizer

(Not compiling)

* Update Fill.cpp

* Update Fill.cpp

* Pressure equaliser layer result update

* Further commits

* Merged PR https://github.com/prusa3d/PrusaSlicer/pull/9622

* First complete working version

* Update PressureEqualizer.cpp

* Implemented parameter in GUI

* Toggle fields according to compatibility

* Updated UI toggles between extrusion rate slope and arc fitting.

* Updated tooltip

* Introduced parameter smoothing segment length

This parameter influences the number of division a line will undergo in response to the requirement to adhere to the extrusion rate flow adjustment.

* Internal parameter and tool tip tweaking

* Parameter and tool tip tweaking

* Updated parameters and tooltip following testing.

* Sync PressureEq with latest PrusaSlicer

* Revert "Sync PressureEq with latest PrusaSlicer"

This reverts commit 131fb94c6b.

---------

Co-authored-by: MGunlogson <MGunlogson@users.noreply.github.com>
Co-authored-by: Vojtech Bubnik <bubnikv@gmail.com>
This commit is contained in:
Ioannis Giannakas 2023-09-27 14:44:45 +01:00 • committed by GitHub
parent 78a8bad6f4
commit cf846195cc
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14 changed files with 824 additions and 431 deletions
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57
src/libslic3r/PrintConfig.cpp
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@ -2470,29 +2470,37 @@ def = this->add("filament_loading_speed", coFloats);
def->mode = comAdvanced;
def->set_default_value(new ConfigOptionFloats { 0. });
#ifdef HAS_PRESSURE_EQUALIZER
//def = this->add("max_volumetric_extrusion_rate_slope_positive", coFloat);
//def->label = L("Max volumetric slope positive");
//def->tooltip = L("This experimental setting is used to limit the speed of change in extrusion rate. "
// "A value of 1.8 mm³/s² ensures, that a change from the extrusion rate "
// "of 1.8 mm³/s (0.45mm extrusion width, 0.2mm extrusion height, feedrate 20 mm/s) "
// "to 5.4 mm³/s (feedrate 60 mm/s) will take at least 2 seconds.");
//def->sidetext = L("mm³/s²");
//def->min = 0;
//def->mode = comAdvanced;
//def->set_default_value(new ConfigOptionFloat(0));
//def = this->add("max_volumetric_extrusion_rate_slope_negative", coFloat);
//def->label = L("Max volumetric slope negative");
//def->tooltip = L("This experimental setting is used to limit the speed of change in extrusion rate. "
// "A value of 1.8 mm³/s² ensures, that a change from the extrusion rate "
// "of 1.8 mm³/s (0.45mm extrusion width, 0.2mm extrusion height, feedrate 20 mm/s) "
// "to 5.4 mm³/s (feedrate 60 mm/s) will take at least 2 seconds.");
//def->sidetext = L("mm³/s²");
//def->min = 0;
//def->mode = comAdvanced;
//def->set_default_value(new ConfigOptionFloat(0));
#endif /* HAS_PRESSURE_EQUALIZER */
def = this->add("max_volumetric_extrusion_rate_slope", coFloat);
def->label = L("Extrusion rate smoothing");
def->tooltip = L("This parameter smooths out sudden extrusion rate changes that happen when "
"the printer transitions from printing a high flow (high speed/larger width) "
"extrusion to a lower flow (lower speed/smaller width) extrusion and vice versa.\n\n"
"It defines the maximum rate by which the extruded volumetric flow in mm3/sec can change over time. "
"Higher values mean higher extrusion rate changes are allowed, resulting in faster speed transitions.\n\n"
"A value of 0 disables the feature. \n\n"
"For a high speed, high flow direct drive printer (like the Bambu lab or Voron) this value is usually not needed. "
"However it can provide some marginal benefit in certain cases where feature speeds vary greatly. For example, "
"when there are aggressive slowdowns due to overhangs. In these cases a high value of around 300-350mm3/s2 is "
"recommended as this allows for just enough smoothing to assist pressure advance achieve a smoother flow transition.\n\n"
"For slower printers without pressure advance, the value should be set much lower. A value of 10-15mm3/s2 is a "
"good starting point for direct drive extruders and 5-10mm3/s2 for Bowden style. \n\n"
"This feature is known as Pressure Equalizer in Prusa slicer.\n\n"
"Note: this parameter disables arc fitting.");
def->sidetext = L("mm³/s²");
def->min = 0;
def->mode = comAdvanced;
def->set_default_value(new ConfigOptionFloat(0));
def = this->add("max_volumetric_extrusion_rate_slope_segment_length", coInt);
def->label = L("Smoothing segment length");
def->tooltip = L("A lower value results in smoother extrusion rate transitions. However, this results in a significantly larger gcode file "
"and more instructions for the printer to process. \n\n"
"Default value of 3 works well for most cases. If your printer is stuttering, increase this value to reduce the number of adjustments made\n\n"
"Allowed values: 1-5");
def->min = 1;
def->max = 5;
def->mode = comAdvanced;
def->set_default_value(new ConfigOptionInt(3));
def = this->add("fan_min_speed", coInts);
def->label = L("Fan speed");
@ -4962,9 +4970,6 @@ void PrintConfigDef::handle_legacy(t_config_option_key &opt_key, std::string &va
"acceleration", "scale", "rotate", "duplicate", "duplicate_grid",
"bed_size",
"print_center", "g0", "wipe_tower_per_color_wipe"
#ifndef HAS_PRESSURE_EQUALIZER
, "max_volumetric_extrusion_rate_slope_positive", "max_volumetric_extrusion_rate_slope_negative"
#endif /* HAS_PRESSURE_EQUALIZER */
// BBS
, "support_sharp_tails","support_remove_small_overhangs", "support_with_sheath",
"tree_support_collision_resolution", "tree_support_with_infill",