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2385a65bd3
The commit contains quite a bit of refactoring, but the key change is at the end of save_on_last_wipe. It was missing the subtraction of the wipe volume from the respective member variable, so the tower would attempt to wipe too much volume into the shrunk area.
421 lines
16 KiB
C++
421 lines
16 KiB
C++
///|/ Copyright (c) Prusa Research 2017 - 2023 Lukáš Matěna @lukasmatena, Vojtěch Bubník @bubnikv
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///|/
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///|/ PrusaSlicer is released under the terms of the AGPLv3 or higher
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///|/
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#ifndef slic3r_GCode_WipeTower_hpp_
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#define slic3r_GCode_WipeTower_hpp_
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#include <cmath>
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#include <string>
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#include <sstream>
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#include <utility>
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#include <algorithm>
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#include "libslic3r/Point.hpp"
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namespace Slic3r
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{
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class WipeTowerWriter;
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class PrintConfig;
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class PrintRegionConfig;
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enum GCodeFlavor : unsigned char;
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class WipeTower
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{
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public:
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static const std::string never_skip_tag() { return "_GCODE_WIPE_TOWER_NEVER_SKIP_TAG"; }
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static std::pair<double, double> get_wipe_tower_cone_base(double width, double height, double depth, double angle_deg);
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static std::vector<std::vector<float>> extract_wipe_volumes(const PrintConfig& config);
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struct Extrusion
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{
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Extrusion(const Vec2f &pos, float width, unsigned int tool) : pos(pos), width(width), tool(tool) {}
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// End position of this extrusion.
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Vec2f pos;
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// Width of a squished extrusion, corrected for the roundings of the squished extrusions.
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// This is left zero if it is a travel move.
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float width;
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// Current extruder index.
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unsigned int tool;
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};
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struct ToolChangeResult
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{
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// Print heigh of this tool change.
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float print_z;
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float layer_height;
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// G-code section to be directly included into the output G-code.
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std::string gcode;
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// For path preview.
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std::vector<Extrusion> extrusions;
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// Initial position, at which the wipe tower starts its action.
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// At this position the extruder is loaded and there is no Z-hop applied.
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Vec2f start_pos;
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// Last point, at which the normal G-code generator of Slic3r shall continue.
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// At this position the extruder is loaded and there is no Z-hop applied.
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Vec2f end_pos;
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// Time elapsed over this tool change.
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// This is useful not only for the print time estimation, but also for the control of layer cooling.
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float elapsed_time;
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// Is this a priming extrusion? (If so, the wipe tower rotation & translation will not be applied later)
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bool priming;
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// Pass a polyline so that normal G-code generator can do a wipe for us.
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// The wipe cannot be done by the wipe tower because it has to pass back
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// a loaded extruder, so it would have to either do a wipe with no retraction
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// (leading to https://github.com/prusa3d/PrusaSlicer/issues/2834) or do
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// an extra retraction-unretraction pair.
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std::vector<Vec2f> wipe_path;
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// Initial tool
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int initial_tool;
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// New tool
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int new_tool;
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// Sum the total length of the extrusion.
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float total_extrusion_length_in_plane() {
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float e_length = 0.f;
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for (size_t i = 1; i < this->extrusions.size(); ++ i) {
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const Extrusion &e = this->extrusions[i];
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if (e.width > 0) {
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Vec2f v = e.pos - (&e - 1)->pos;
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e_length += v.norm();
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}
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}
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return e_length;
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}
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bool force_travel = false;
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};
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struct box_coordinates
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{
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box_coordinates(float left, float bottom, float width, float height) :
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ld(left , bottom ),
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lu(left , bottom + height),
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rd(left + width, bottom ),
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ru(left + width, bottom + height) {}
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box_coordinates(const Vec2f &pos, float width, float height) : box_coordinates(pos(0), pos(1), width, height) {}
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void translate(const Vec2f &shift) {
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ld += shift; lu += shift;
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rd += shift; ru += shift;
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}
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void translate(const float dx, const float dy) { translate(Vec2f(dx, dy)); }
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void expand(const float offset) {
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ld += Vec2f(- offset, - offset);
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lu += Vec2f(- offset, offset);
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rd += Vec2f( offset, - offset);
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ru += Vec2f( offset, offset);
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}
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void expand(const float offset_x, const float offset_y) {
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ld += Vec2f(- offset_x, - offset_y);
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lu += Vec2f(- offset_x, offset_y);
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rd += Vec2f( offset_x, - offset_y);
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ru += Vec2f( offset_x, offset_y);
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}
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Vec2f ld; // left down
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Vec2f lu; // left upper
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Vec2f rd; // right lower
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Vec2f ru; // right upper
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};
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// Construct ToolChangeResult from current state of WipeTower and WipeTowerWriter.
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// WipeTowerWriter is moved from !
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ToolChangeResult construct_tcr(WipeTowerWriter& writer,
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bool priming,
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size_t old_tool) const;
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// x -- x coordinates of wipe tower in mm ( left bottom corner )
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// y -- y coordinates of wipe tower in mm ( left bottom corner )
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// width -- width of wipe tower in mm ( default 60 mm - leave as it is )
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// wipe_area -- space available for one toolchange in mm
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WipeTower(const PrintConfig& config,
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const PrintRegionConfig& default_region_config,
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const std::vector<std::vector<float>>& wiping_matrix,
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size_t initial_tool);
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// Set the extruder properties.
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void set_extruder(size_t idx, const PrintConfig& config);
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// Appends into internal structure m_plan containing info about the future wipe tower
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// to be used before building begins. The entries must be added ordered in z.
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void plan_toolchange(float z_par, float layer_height_par, unsigned int old_tool, unsigned int new_tool, float wipe_volume = 0.f);
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// Iterates through prepared m_plan, generates ToolChangeResults and appends them to "result"
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void generate(std::vector<std::vector<ToolChangeResult>> &result);
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float get_depth() const { return m_wipe_tower_depth; }
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std::vector<std::pair<float, float>> get_z_and_depth_pairs() const;
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float get_brim_width() const { return m_wipe_tower_brim_width_real; }
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float get_wipe_tower_height() const { return m_wipe_tower_height; }
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// Switch to a next layer.
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void set_layer(
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// Print height of this layer.
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float print_z,
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// Layer height, used to calculate extrusion the rate.
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float layer_height,
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// Maximum number of tool changes on this layer or the layers below.
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size_t max_tool_changes,
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// Is this the first layer of the print? In that case print the brim first. (OBSOLETE)
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bool /*is_first_layer*/,
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// Is this the last layer of the waste tower?
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bool is_last_layer)
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{
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m_z_pos = print_z;
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m_layer_height = layer_height;
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m_depth_traversed = 0.f;
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m_current_layer_finished = false;
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// Advance m_layer_info iterator, making sure we got it right
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while (!m_plan.empty() && m_layer_info->z < print_z - WT_EPSILON && m_layer_info+1 != m_plan.end())
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++m_layer_info;
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m_current_shape = (! this->is_first_layer() && m_current_shape == SHAPE_NORMAL) ? SHAPE_REVERSED : SHAPE_NORMAL;
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if (this->is_first_layer()) {
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m_num_layer_changes = 0;
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m_num_tool_changes = 0;
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} else
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++ m_num_layer_changes;
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// Calculate extrusion flow from desired line width, nozzle diameter, filament diameter and layer_height:
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m_extrusion_flow = extrusion_flow(layer_height);
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}
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// Return the wipe tower position.
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const Vec2f& position() const { return m_wipe_tower_pos; }
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// Return the wipe tower width.
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float width() const { return m_wipe_tower_width; }
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// The wipe tower is finished, there should be no more tool changes or wipe tower prints.
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bool finished() const { return m_max_color_changes == 0; }
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// Returns gcode to prime the nozzles at the front edge of the print bed.
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std::vector<ToolChangeResult> prime(
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// print_z of the first layer.
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float first_layer_height,
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// Extruder indices, in the order to be primed. The last extruder will later print the wipe tower brim, print brim and the object.
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const std::vector<unsigned int> &tools,
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// If true, the last priming are will be the same as the other priming areas, and the rest of the wipe will be performed inside the wipe tower.
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// If false, the last priming are will be large enough to wipe the last extruder sufficiently.
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bool last_wipe_inside_wipe_tower);
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// Returns gcode for a toolchange and a final print head position.
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// On the first layer, extrude a brim around the future wipe tower first.
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ToolChangeResult tool_change(size_t new_tool);
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// Fill the unfilled space with a sparse infill.
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// Call this method only if layer_finished() is false.
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ToolChangeResult finish_layer();
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// Is the current layer finished?
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bool layer_finished() const {
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return m_current_layer_finished;
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}
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std::vector<std::pair<float, std::vector<float>>> get_used_filament_until_layer() const { return m_used_filament_length_until_layer; }
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int get_number_of_toolchanges() const { return m_num_tool_changes; }
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struct FilamentParameters {
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std::string material = "PLA";
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bool is_soluble = false;
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int temperature = 0;
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int first_layer_temperature = 0;
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float loading_speed = 0.f;
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float loading_speed_start = 0.f;
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float unloading_speed = 0.f;
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float unloading_speed_start = 0.f;
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float delay = 0.f ;
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float filament_stamping_loading_speed = 0.f;
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float filament_stamping_distance = 0.f;
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int cooling_moves = 0;
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float cooling_initial_speed = 0.f;
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float cooling_final_speed = 0.f;
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float ramming_line_width_multiplicator = 1.f;
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float ramming_step_multiplicator = 1.f;
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float max_e_speed = std::numeric_limits<float>::max();
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std::vector<float> ramming_speed;
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float nozzle_diameter;
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float filament_area;
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bool multitool_ramming;
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float multitool_ramming_time = 0.f;
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float filament_minimal_purge_on_wipe_tower = 0.f;
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};
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private:
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enum wipe_shape // A fill-in direction
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{
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SHAPE_NORMAL = 1,
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SHAPE_REVERSED = -1
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};
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const float Width_To_Nozzle_Ratio = 1.25f; // desired line width (oval) in multiples of nozzle diameter - may not be actually neccessary to adjust
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const float WT_EPSILON = 1e-3f;
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float filament_area() const {
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return m_filpar[0].filament_area; // all extruders are assumed to have the same filament diameter at this point
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}
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bool m_semm = true; // Are we using a single extruder multimaterial printer?
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bool m_is_mk4mmu3 = false;
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Vec2f m_wipe_tower_pos; // Left front corner of the wipe tower in mm.
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float m_wipe_tower_width; // Width of the wipe tower.
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float m_wipe_tower_depth = 0.f; // Depth of the wipe tower
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float m_wipe_tower_height = 0.f;
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float m_wipe_tower_cone_angle = 0.f;
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float m_wipe_tower_brim_width = 0.f; // Width of brim (mm) from config
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float m_wipe_tower_brim_width_real = 0.f; // Width of brim (mm) after generation
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float m_wipe_tower_rotation_angle = 0.f; // Wipe tower rotation angle in degrees (with respect to x axis)
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float m_internal_rotation = 0.f;
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float m_y_shift = 0.f; // y shift passed to writer
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float m_z_pos = 0.f; // Current Z position.
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float m_layer_height = 0.f; // Current layer height.
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size_t m_max_color_changes = 0; // Maximum number of color changes per layer.
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int m_old_temperature = -1; // To keep track of what was the last temp that we set (so we don't issue the command when not neccessary)
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float m_travel_speed = 0.f;
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float m_infill_speed = 0.f;
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float m_perimeter_speed = 0.f;
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float m_first_layer_speed = 0.f;
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size_t m_first_layer_idx = size_t(-1);
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// G-code generator parameters.
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float m_cooling_tube_retraction = 0.f;
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float m_cooling_tube_length = 0.f;
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float m_parking_pos_retraction = 0.f;
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float m_extra_loading_move = 0.f;
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float m_bridging = 0.f;
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bool m_no_sparse_layers = false;
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bool m_set_extruder_trimpot = false;
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bool m_adhesion = true;
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GCodeFlavor m_gcode_flavor;
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// Bed properties
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enum {
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RectangularBed,
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CircularBed,
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CustomBed
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} m_bed_shape;
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float m_bed_width; // width of the bed bounding box
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Vec2f m_bed_bottom_left; // bottom-left corner coordinates (for rectangular beds)
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float m_perimeter_width = 0.4f * Width_To_Nozzle_Ratio; // Width of an extrusion line, also a perimeter spacing for 100% infill.
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float m_extrusion_flow = 0.038f; //0.029f;// Extrusion flow is derived from m_perimeter_width, layer height and filament diameter.
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// Extruder specific parameters.
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std::vector<FilamentParameters> m_filpar;
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// State of the wipe tower generator.
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unsigned int m_num_layer_changes = 0; // Layer change counter for the output statistics.
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unsigned int m_num_tool_changes = 0; // Tool change change counter for the output statistics.
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// A fill-in direction (positive Y, negative Y) alternates with each layer.
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wipe_shape m_current_shape = SHAPE_NORMAL;
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size_t m_current_tool = 0;
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const std::vector<std::vector<float>> wipe_volumes;
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float m_depth_traversed = 0.f; // Current y position at the wipe tower.
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bool m_current_layer_finished = false;
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bool m_left_to_right = true;
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float m_extra_flow = 1.f;
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float m_extra_spacing_wipe = 1.f;
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float m_extra_spacing_ramming = 1.f;
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bool is_first_layer() const { return size_t(m_layer_info - m_plan.begin()) == m_first_layer_idx; }
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// Calculates extrusion flow needed to produce required line width for given layer height
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float extrusion_flow(float layer_height = -1.f) const // negative layer_height - return current m_extrusion_flow
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{
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if ( layer_height < 0 )
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return m_extrusion_flow;
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return layer_height * ( m_perimeter_width - layer_height * (1.f-float(M_PI)/4.f)) / filament_area();
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}
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// Calculates depth for all layers and propagates them downwards
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void plan_tower();
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// Goes through m_plan, calculates border and finish_layer extrusions and subtracts them from last wipe
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void save_on_last_wipe();
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// to store information about tool changes for a given layer
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struct WipeTowerInfo{
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struct ToolChange {
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size_t old_tool;
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size_t new_tool;
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float required_depth;
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float ramming_depth;
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float first_wipe_line;
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float wipe_volume;
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float wipe_volume_total;
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ToolChange(size_t old, size_t newtool, float depth=0.f, float ramming_depth=0.f, float fwl=0.f, float wv=0.f)
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: old_tool{old}, new_tool{newtool}, required_depth{depth}, ramming_depth{ramming_depth}, first_wipe_line{fwl}, wipe_volume{wv}, wipe_volume_total{wv} {}
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};
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float z; // z position of the layer
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float height; // layer height
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float depth; // depth of the layer based on all layers above
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float toolchanges_depth() const { float sum = 0.f; for (const auto &a : tool_changes) sum += a.required_depth; return sum; }
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std::vector<ToolChange> tool_changes;
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WipeTowerInfo(float z_par, float layer_height_par)
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: z{z_par}, height{layer_height_par}, depth{0} {}
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};
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std::vector<WipeTowerInfo> m_plan; // Stores information about all layers and toolchanges for the future wipe tower (filled by plan_toolchange(...))
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std::vector<WipeTowerInfo>::iterator m_layer_info = m_plan.end();
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// This sums height of all extruded layers, not counting the layers which
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// will be later removed when the "no_sparse_layers" is used.
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float m_current_height = 0.f;
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// Stores information about used filament length per extruder:
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std::vector<float> m_used_filament_length;
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std::vector<std::pair<float, std::vector<float>>> m_used_filament_length_until_layer;
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// Return index of first toolchange that switches to non-soluble extruder
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// ot -1 if there is no such toolchange.
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int first_toolchange_to_nonsoluble(
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const std::vector<WipeTowerInfo::ToolChange>& tool_changes) const;
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void toolchange_Unload(
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WipeTowerWriter &writer,
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const box_coordinates &cleaning_box,
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const std::string& current_material,
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const int old_temperature,
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const int new_temperature);
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void toolchange_Change(
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WipeTowerWriter &writer,
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const size_t new_tool,
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const std::string& new_material);
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void toolchange_Load(
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WipeTowerWriter &writer,
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const box_coordinates &cleaning_box);
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void toolchange_Wipe(
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WipeTowerWriter &writer,
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const box_coordinates &cleaning_box,
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float wipe_volume);
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};
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} // namespace Slic3r
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#endif // slic3r_GCode_WipeTower_hpp_
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