397 lines
16 KiB
C++
397 lines
16 KiB
C++
#ifndef WipeTower_
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#define WipeTower_
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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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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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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, const std::vector<std::vector<float>>& wiping_matrix, 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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float get_brim_width() const { return m_wipe_tower_brim_width_real; }
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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<float> get_used_filament() const { return m_used_filament_length; }
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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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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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};
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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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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_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_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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///unsigned int m_idx_tool_change_in_layer = 0; // Layer change counter in this layer. Counting up to m_max_color_changes.
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bool m_print_brim = true;
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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_spacing = 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 length of extrusion line to extrude given volume
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float volume_to_length(float volume, float line_width, float layer_height) const {
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return std::max(0.f, volume / (layer_height * (line_width - layer_height * (1.f - float(M_PI) / 4.f))));
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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 and recalculates depths and width of the WT to make it exactly square - experimental
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void make_wipe_tower_square();
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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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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} {}
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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 extra_spacing;
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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}, extra_spacing{1.f} {}
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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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// Stores information about used filament length per extruder:
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std::vector<float> m_used_filament_length;
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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 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 // WipeTowerPrusaMM_hpp_
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