3DPrinting/PrusaSlicer-NonPlainar
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improve curling model parameters,

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other small improvements
This commit is contained in:
PavelMikus 2022-06-28 13:40:22 +02:00
parent cf94c44fd5
commit 8e5cdf29ba
3 changed files with 19 additions and 20 deletions
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2
src/libslic3r/PrintObject.cpp
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@ -434,7 +434,7 @@ void PrintObject::generate_support_spots()
Vec3f point = Vec3f(inv_transform * support_point.position);
Vec3f origin = Vec3f(
inv_transform * Vec3f(support_point.position.x(), support_point.position.y(), 0.0f));
selector.enforce_spot(point, origin, 1.0f);
selector.enforce_spot(point, origin, 0.3f);
}
model_volume->supported_facets.set(selector.selector);

15
src/libslic3r/SupportSpotsGenerator.cpp
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@ -433,7 +433,7 @@ void check_extrusion_entity_stability(const ExtrusionEntity *entity,
curr_angle = angle(v1, v2);
}
bridging_acc.add_angle(curr_angle);
malformation_acc.add_angle(curr_angle);
malformation_acc.add_angle(std::max(0.0f,curr_angle));
size_t nearest_line_idx;
Vec2f nearest_point;
@ -449,7 +449,6 @@ void check_extrusion_entity_stability(const ExtrusionEntity *entity,
current_line.stability_accumulator_id = current_stability_acc;
stability_accs.access(current_stability_acc).add_extrusion(current_line, print_z, mm3_per_mm);
bridging_acc.reset();
// TODO curving here
} else {
bridging_acc.add_distance(current_line.len);
if (current_stability_acc == NULL_ACC_ID) {
@ -460,8 +459,8 @@ void check_extrusion_entity_stability(const ExtrusionEntity *entity,
current_segment.add_extrusion(current_line, print_z, mm3_per_mm);
if (bridging_acc.distance // if unsupported distance is larger than bridge distance linearly decreased by curvature, enforce supports.
> params.bridge_distance
/ (1.0f + bridging_acc.max_curvature
* params.bridge_distance_decrease_by_curvature_factor / PI)) {
/ (1.0f + (bridging_acc.max_curvature
* params.bridge_distance_decrease_by_curvature_factor / PI))) {
current_segment.add_support_point(current_line.b, 0.0f); // Do not count extrusion supports into the sticking force. They can be very densely placed, causing algorithm to overestimate stickiness.
issues.supports_nedded.emplace_back(to_vec3f(current_line.b), 1.0);
bridging_acc.reset();
@ -471,10 +470,10 @@ void check_extrusion_entity_stability(const ExtrusionEntity *entity,
//malformation
if (fabs(dist_from_prev_layer) < flow_width * 2.0f) {
const ExtrusionLine &nearest_line = prev_layer_lines.get_line(nearest_line_idx);
current_line.malformation += 0.7 * nearest_line.malformation;
current_line.malformation += 0.9 * nearest_line.malformation;
}
if (dist_from_prev_layer > flow_width * 0.3) {
current_line.malformation += 0.6 + 0.4 * malformation_acc.max_curvature / PI;
current_line.malformation += 0.15 * (0.6 + 0.4 * malformation_acc.max_curvature / PI);
} else {
malformation_acc.reset();
}
@ -545,7 +544,7 @@ void check_layer_global_stability(StabilityAccumulators &stability_accs,
float conflict_torque_arm = (to_3d(Vec2f(pivot - line.b), print_z).cross(
extruder_pressure_direction)).norm();
float extruder_conflict_force = params.tolerable_extruder_conflict_force +
line.malformation * params.malformations_additive_conflict_extruder_force;
std::min(line.malformation, 1.0f) * params.malformations_additive_conflict_extruder_force;
float extruder_conflict_torque = extruder_conflict_force * conflict_torque_arm;
float total_torque = bed_movement_torque + extruder_conflict_torque - weight_torque - sticking_torque;
@ -763,7 +762,7 @@ Issues check_object_stability(const PrintObject *po, const Params &params) {
#ifdef DEBUG_FILES
for (const auto &line : prev_layer_lines.get_lines()) {
Vec3f color = value_to_rgbf(0, 5.0f, line.malformation);
Vec3f color = value_to_rgbf(0, 1.0f, line.malformation);
fprintf(malform_f, "v %f %f %f %f %f %f\n", line.b[0],
line.b[1], print_z, color[0], color[1], color[2]);
}

22
src/libslic3r/SupportSpotsGenerator.hpp
View File

@ -10,22 +10,22 @@ namespace SupportSpotsGenerator {
struct Params {
const float gravity_constant = 9806.65f; // mm/s^2; gravity acceleration on Earth's surface, algorithm assumes that printer is in upwards position.
float bridge_distance = 10.0f; //mm
float bridge_distance_decrease_by_curvature_factor = 5.0f; // allowed bridge distance = bridge_distance / (this factor * (curvature / PI) )
const float bridge_distance = 12.0f; //mm
const float bridge_distance_decrease_by_curvature_factor = 5.0f; // allowed bridge distance = bridge_distance / (this factor * (curvature / PI) )
float min_distance_between_support_points = 3.0f;
const float min_distance_between_support_points = 3.0f;
// Adhesion computation : from experiment, PLA holds about 3g per mm^2 of base area (with reserve); So it can withstand about 3*gravity_constant force per mm^2
float base_adhesion = 3.0f * gravity_constant; // adhesion per mm^2 of first layer
float support_adhesion = 1.0f * gravity_constant; // adhesion per mm^2 of support interface layer
const float base_adhesion = 3.0f * gravity_constant; // adhesion per mm^2 of first layer
const float support_adhesion = 1.0f * gravity_constant; // adhesion per mm^2 of support interface layer
float support_points_interface_radius = 1.0f; // mm
const float support_points_interface_radius = 0.3f; // mm
float max_acceleration = 9*1000.0f; // mm/s^2 ; max acceleration of object (bed) in XY (NOTE: The max hit is received by the object in the jerk phase, so the usual machine limits are too low)
float filament_density = 1.25f * 0.001f; // g/mm^3 ; Common filaments are very lightweight, so precise number is not that important
float tensile_strength = 33000.0f; // mN/mm^2; 33 MPa is tensile strength of ABS, which has the lowest tensile strength from common materials.
float tolerable_extruder_conflict_force = 50.0f * gravity_constant; // force that can occasionally push the model due to various factors (filament leaks, small curling, ... ); current value corresponds to weight of X grams
float malformations_additive_conflict_extruder_force = 100.0f * gravity_constant; // for areas with possible high layered curled filaments
const float max_acceleration = 9*1000.0f; // mm/s^2 ; max acceleration of object (bed) in XY (NOTE: The max hit is received by the object in the jerk phase, so the usual machine limits are too low)
const float filament_density = 1.25f * 0.001f; // g/mm^3 ; Common filaments are very lightweight, so precise number is not that important
const float tensile_strength = 33000.0f; // mN/mm^2; 33 MPa is tensile strength of ABS, which has the lowest tensile strength from common materials.
const float tolerable_extruder_conflict_force = 50.0f * gravity_constant; // force that can occasionally push the model due to various factors (filament leaks, small curling, ... ); current value corresponds to weight of X grams
const float malformations_additive_conflict_extruder_force = 100.0f * gravity_constant; // for areas with possible high layered curled filaments
};