227 lines
10 KiB
C++
227 lines
10 KiB
C++
#include <catch2/catch.hpp>
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#include <numeric>
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#include <sstream>
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#include "test_data.hpp" // get access to init_print, etc
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#include "libslic3r/Config.hpp"
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#include "libslic3r/GCodeReader.hpp"
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#include "libslic3r/Flow.hpp"
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#include "libslic3r/libslic3r.h"
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using namespace Slic3r::Test;
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using namespace Slic3r;
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SCENARIO("Extrusion width specifics", "[Flow]") {
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auto test = [](const DynamicPrintConfig &config) {
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Slic3r::GCodeReader parser;
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const double layer_height = config.opt_float("layer_height");
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std::vector<double> E_per_mm_bottom;
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parser.parse_buffer(Slic3r::Test::slice({ Slic3r::Test::TestMesh::cube_20x20x20 }, config),
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[&E_per_mm_bottom, layer_height] (Slic3r::GCodeReader& self, const Slic3r::GCodeReader::GCodeLine& line)
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{
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if (self.z() == Approx(layer_height).margin(0.01)) { // only consider first layer
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if (line.extruding(self) && line.dist_XY(self) > 0)
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E_per_mm_bottom.emplace_back(line.dist_E(self) / line.dist_XY(self));
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}
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});
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THEN("First layer width applies to everything on first layer.") {
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REQUIRE(E_per_mm_bottom.size() > 0);
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const double E_per_mm_avg = std::accumulate(E_per_mm_bottom.cbegin(), E_per_mm_bottom.cend(), 0.0) / static_cast<double>(E_per_mm_bottom.size());
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bool pass = (std::count_if(E_per_mm_bottom.cbegin(), E_per_mm_bottom.cend(), [E_per_mm_avg] (const double& v) { return v == Approx(E_per_mm_avg); }) == 0);
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REQUIRE(pass);
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}
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THEN("First layer width does not apply to upper layer.") {
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}
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};
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GIVEN("A config with a skirt, brim, some fill density, 3 perimeters, and 1 bottom solid layer") {
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auto config = Slic3r::DynamicPrintConfig::full_print_config_with({
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{ "skirts", 1 },
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{ "brim_width", 2 },
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{ "perimeters", 3 },
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{ "fill_density", "40%" },
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{ "first_layer_height", 0.3 },
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{ "first_layer_extrusion_width", "2" },
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});
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WHEN("Slicing a 20mm cube") {
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test(config);
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}
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}
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GIVEN("A config with more options and a 20mm cube ") {
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auto config = Slic3r::DynamicPrintConfig::full_print_config_with({
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{ "skirts", 1 },
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{ "brim_width", 2 },
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{ "perimeters", 3 },
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{ "fill_density", "40%" },
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{ "layer_height", "0.35" },
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{ "first_layer_height", "0.35" },
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{ "bottom_solid_layers", 1 },
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{ "first_layer_extrusion_width", "2" },
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{ "filament_diameter", "3" },
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{ "nozzle_diameter", "0.5" }
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});
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WHEN("Slicing a 20mm cube") {
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test(config);
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}
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}
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}
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SCENARIO(" Bridge flow specifics.", "[Flow]") {
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auto config = DynamicPrintConfig::full_print_config_with({
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{ "bridge_speed", 99 },
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{ "bridge_flow_ratio", 1 },
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// to prevent speeds from being altered
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{ "cooling", "0" },
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// to prevent speeds from being altered
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{ "first_layer_speed", "100%" }
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});
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auto test = [](const DynamicPrintConfig &config) {
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GCodeReader parser;
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const double bridge_speed = config.opt_float("bridge_speed") * 60.;
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std::vector<double> E_per_mm;
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parser.parse_buffer(Slic3r::Test::slice({ Slic3r::Test::TestMesh::overhang }, config),
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[&E_per_mm, bridge_speed](Slic3r::GCodeReader &self, const Slic3r::GCodeReader::GCodeLine &line) {
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if (line.extruding(self) && line.dist_XY(self) > 0) {
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if (is_approx<double>(line.new_F(self), bridge_speed))
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E_per_mm.emplace_back(line.dist_E(self) / line.dist_XY(self));
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}
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});
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const double nozzle_dmr = config.opt<ConfigOptionFloats>("nozzle_diameter")->get_at(0);
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const double filament_dmr = config.opt<ConfigOptionFloats>("filament_diameter")->get_at(0);
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const double bridge_mm_per_mm = sqr(nozzle_dmr / filament_dmr) * config.opt_float("bridge_flow_ratio");
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size_t num_errors = std::count_if(E_per_mm.begin(), E_per_mm.end(),
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[bridge_mm_per_mm](double v){ return std::abs(v - bridge_mm_per_mm) > 0.01; });
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return num_errors == 0;
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};
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GIVEN("A default config with no cooling and a fixed bridge speed, flow ratio and an overhang mesh.") {
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WHEN("bridge_flow_ratio is set to 0.5 and extrusion width to default") {
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config.set_deserialize_strict({ { "bridge_flow_ratio", 0.5}, { "extrusion_width", "0" } });
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THEN("Output flow is as expected.") {
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REQUIRE(test(config));
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}
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}
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WHEN("bridge_flow_ratio is set to 2.0 and extrusion width to default") {
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config.set_deserialize_strict({ { "bridge_flow_ratio", 2.0}, { "extrusion_width", "0" } });
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THEN("Output flow is as expected.") {
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REQUIRE(test(config));
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}
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}
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WHEN("bridge_flow_ratio is set to 0.5 and extrusion_width to 0.4") {
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config.set_deserialize_strict({ { "bridge_flow_ratio", 0.5}, { "extrusion_width", 0.4 } });
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THEN("Output flow is as expected.") {
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REQUIRE(test(config));
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}
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}
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WHEN("bridge_flow_ratio is set to 1.0 and extrusion_width to 0.4") {
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config.set_deserialize_strict({ { "bridge_flow_ratio", 1.0}, { "extrusion_width", 0.4 } });
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THEN("Output flow is as expected.") {
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REQUIRE(test(config));
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}
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}
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WHEN("bridge_flow_ratio is set to 2 and extrusion_width to 0.4") {
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config.set_deserialize_strict({ { "bridge_flow_ratio", 2.}, { "extrusion_width", 0.4 } });
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THEN("Output flow is as expected.") {
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REQUIRE(test(config));
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}
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}
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}
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GIVEN("A default config with no cooling and a fixed bridge speed, flow ratio, fixed extrusion width of 0.4mm and an overhang mesh.") {
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WHEN("bridge_flow_ratio is set to 1.0") {
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THEN("Output flow is as expected.") {
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}
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}
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WHEN("bridge_flow_ratio is set to 0.5") {
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THEN("Output flow is as expected.") {
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}
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}
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WHEN("bridge_flow_ratio is set to 2.0") {
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THEN("Output flow is as expected.") {
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}
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}
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}
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}
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/// Test the expected behavior for auto-width,
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/// spacing, etc
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SCENARIO("Flow: Flow math for non-bridges", "[Flow]") {
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GIVEN("Nozzle Diameter of 0.4, a desired width of 1mm and layer height of 0.5") {
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ConfigOptionFloatOrPercent width(1.0, false);
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float nozzle_diameter = 0.4f;
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float layer_height = 0.4f;
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// Spacing for non-bridges is has some overlap
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THEN("External perimeter flow has spacing fixed to 1.125 * nozzle_diameter") {
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auto flow = Flow::new_from_config_width(frExternalPerimeter, ConfigOptionFloatOrPercent(0, false), nozzle_diameter, layer_height);
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REQUIRE(flow.spacing() == Approx(1.125 * nozzle_diameter - layer_height * (1.0 - PI / 4.0)));
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}
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THEN("Internal perimeter flow has spacing fixed to 1.125 * nozzle_diameter") {
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auto flow = Flow::new_from_config_width(frPerimeter, ConfigOptionFloatOrPercent(0, false), nozzle_diameter, layer_height);
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REQUIRE(flow.spacing() == Approx(1.125 *nozzle_diameter - layer_height * (1.0 - PI / 4.0)));
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}
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THEN("Spacing for supplied width is 0.8927f") {
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auto flow = Flow::new_from_config_width(frExternalPerimeter, width, nozzle_diameter, layer_height);
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REQUIRE(flow.spacing() == Approx(width.value - layer_height * (1.0 - PI / 4.0)));
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flow = Flow::new_from_config_width(frPerimeter, width, nozzle_diameter, layer_height);
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REQUIRE(flow.spacing() == Approx(width.value - layer_height * (1.0 - PI / 4.0)));
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}
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}
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/// Check the min/max
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GIVEN("Nozzle Diameter of 0.25") {
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float nozzle_diameter = 0.25f;
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float layer_height = 0.5f;
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WHEN("layer height is set to 0.2") {
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layer_height = 0.15f;
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THEN("Max width is set.") {
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auto flow = Flow::new_from_config_width(frPerimeter, ConfigOptionFloatOrPercent(0, false), nozzle_diameter, layer_height);
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REQUIRE(flow.width() == Approx(1.125 * nozzle_diameter));
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}
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}
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WHEN("Layer height is set to 0.25") {
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layer_height = 0.25f;
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THEN("Min width is set.") {
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auto flow = Flow::new_from_config_width(frPerimeter, ConfigOptionFloatOrPercent(0, false), nozzle_diameter, layer_height);
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REQUIRE(flow.width() == Approx(1.125 * nozzle_diameter));
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}
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}
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}
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#if 0
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/// Check for an edge case in the maths where the spacing could be 0; original
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/// math is 0.99. Slic3r issue #4654
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GIVEN("Input spacing of 0.414159 and a total width of 2") {
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double in_spacing = 0.414159;
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double total_width = 2.0;
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auto flow = Flow::new_from_spacing(1.0, 0.4, 0.3);
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WHEN("solid_spacing() is called") {
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double result = flow.solid_spacing(total_width, in_spacing);
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THEN("Yielded spacing is greater than 0") {
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REQUIRE(result > 0);
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}
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}
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}
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#endif
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}
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/// Spacing, width calculation for bridge extrusions
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SCENARIO("Flow: Flow math for bridges", "[Flow]") {
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GIVEN("Nozzle Diameter of 0.4, a desired width of 1mm and layer height of 0.5") {
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float nozzle_diameter = 0.4f;
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float bridge_flow = 1.0f;
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WHEN("Flow role is frExternalPerimeter") {
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auto flow = Flow::bridging_flow(nozzle_diameter * sqrt(bridge_flow), nozzle_diameter);
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THEN("Bridge width is same as nozzle diameter") {
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REQUIRE(flow.width() == Approx(nozzle_diameter));
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}
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THEN("Bridge spacing is same as nozzle diameter + BRIDGE_EXTRA_SPACING") {
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REQUIRE(flow.spacing() == Approx(nozzle_diameter + BRIDGE_EXTRA_SPACING));
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}
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}
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}
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}
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