PrusaSlicer-NonPlainar/xs/src/libslic3r/GCode/WipeTowerPrusaMM.cpp

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/*
TODO LIST
---------
1. cooling moves - DONE
2. account for perimeter and finish_layer extrusions and subtract it from last wipe - DONE
3. priming extrusions (last wipe must clear the color)
4. Peter's wipe tower - layer's are not exactly square
5. Peter's wipe tower - variable width for higher levels
6. Peter's wipe tower - make sure it is not too sparse (apply max_bridge_distance and make last wipe longer)
7. Peter's wipe tower - enable enhanced first layer adhesion
*/
#include "WipeTowerPrusaMM.hpp"
#include <assert.h>
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#include <math.h>
#include <fstream>
#include <iostream>
#include <vector>
#include <numeric>
#include <algorithm>
#include "Analyzer.hpp"
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#if defined(__linux) || defined(__GNUC__ )
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#include <strings.h>
#endif /* __linux */
#ifdef _MSC_VER
#define strcasecmp _stricmp
#endif
namespace Slic3r
{
namespace PrusaMultiMaterial {
class Writer
{
public:
Writer() :
m_current_pos(std::numeric_limits<float>::max(), std::numeric_limits<float>::max()),
m_current_z(0.f),
m_current_feedrate(0.f),
m_layer_height(0.f),
m_extrusion_flow(0.f),
m_preview_suppressed(false),
m_elapsed_time(0.f) {}
Writer& set_initial_position(const WipeTower::xy &pos) {
m_start_pos = WipeTower::xy(pos,0.f,m_y_shift).rotate(m_wipe_tower_pos, m_wipe_tower_width, m_wipe_tower_depth, m_angle_deg);
m_current_pos = pos;
return *this;
}
Writer& set_initial_tool(const unsigned int tool) { m_current_tool = tool; return *this; }
Writer& set_z(float z)
{ m_current_z = z; return *this; }
Writer& set_layer_height(float layer_height)
{ m_layer_height = layer_height; return *this; }
Writer& set_extrusion_flow(float flow)
{ m_extrusion_flow = flow; return *this; }
Writer& set_rotation(WipeTower::xy& pos, float width, float depth, float angle)
{ m_wipe_tower_pos = pos; m_wipe_tower_width = width; m_wipe_tower_depth=depth; m_angle_deg = angle; return (*this); }
Writer& set_y_shift(float shift) {
m_current_pos.y += shift-m_y_shift;
m_y_shift = shift;
return (*this);
}
// Suppress / resume G-code preview in Slic3r. Slic3r will have difficulty to differentiate the various
// filament loading and cooling moves from normal extrusion moves. Therefore the writer
// is asked to suppres output of some lines, which look like extrusions.
Writer& suppress_preview() { m_preview_suppressed = true; return *this; }
Writer& resume_preview() { m_preview_suppressed = false; return *this; }
Writer& feedrate(float f)
{
if (f != m_current_feedrate)
m_gcode += "G1" + set_format_F(f) + "\n";
return *this;
}
const std::string& gcode() const { return m_gcode; }
const std::vector<WipeTower::Extrusion>& extrusions() const { return m_extrusions; }
float x() const { return m_current_pos.x; }
float y() const { return m_current_pos.y; }
const WipeTower::xy& pos() const { return m_current_pos; }
const WipeTower::xy start_pos_rotated() const { return m_start_pos; }
const WipeTower::xy pos_rotated() const { return WipeTower::xy(m_current_pos,0.f,m_y_shift).rotate(m_wipe_tower_pos, m_wipe_tower_width, m_wipe_tower_depth, m_angle_deg); }
float elapsed_time() const { return m_elapsed_time; }
// Extrude with an explicitely provided amount of extrusion.
Writer& extrude_explicit(float x, float y, float e, float f = 0.f)
{
if (x == m_current_pos.x && y == m_current_pos.y && e == 0.f && (f == 0.f || f == m_current_feedrate))
// Neither extrusion nor a travel move.
return *this;
float dx = x - m_current_pos.x;
float dy = y - m_current_pos.y;
double len = sqrt(dx*dx+dy*dy);
// For rotated wipe tower, transform position to printer coordinates
WipeTower::xy rotated_current_pos(WipeTower::xy(m_current_pos,0.f,m_y_shift).rotate(m_wipe_tower_pos, m_wipe_tower_width, m_wipe_tower_depth, m_angle_deg));
WipeTower::xy rot(WipeTower::xy(x,y+m_y_shift).rotate(m_wipe_tower_pos, m_wipe_tower_width, m_wipe_tower_depth, m_angle_deg));
if (! m_preview_suppressed && e > 0.f && len > 0.) {
// Width of a squished extrusion, corrected for the roundings of the squished extrusions.
// This is left zero if it is a travel move.
float width = float(double(e) * /*Filament_Area*/2.40528 / (len * m_layer_height));
// Correct for the roundings of a squished extrusion.
width += m_layer_height * float(1. - M_PI / 4.);
if (m_extrusions.empty() || m_extrusions.back().pos != rotated_current_pos)
m_extrusions.emplace_back(WipeTower::Extrusion(rotated_current_pos, 0, m_current_tool));
m_extrusions.emplace_back(WipeTower::Extrusion(WipeTower::xy(rot.x, rot.y), width, m_current_tool));
}
m_gcode += "G1";
if (rot.x != rotated_current_pos.x)
m_gcode += set_format_X(rot.x);
if (rot.y != rotated_current_pos.y)
m_gcode += set_format_Y(rot.y);
// Transform current position back to wipe tower coordinates (was updated by set_format_X)
m_current_pos.x = x;
m_current_pos.y = y;
if (e != 0.f)
m_gcode += set_format_E(e);
if (f != 0.f && f != m_current_feedrate)
m_gcode += set_format_F(f);
// Update the elapsed time with a rough estimate.
m_elapsed_time += ((len == 0) ? std::abs(e) : len) / m_current_feedrate * 60.f;
m_gcode += "\n";
return *this;
}
Writer& extrude_explicit(const WipeTower::xy &dest, float e, float f = 0.f)
{ return extrude_explicit(dest.x, dest.y, e, f); }
// Travel to a new XY position. f=0 means use the current value.
Writer& travel(float x, float y, float f = 0.f)
{ return extrude_explicit(x, y, 0.f, f); }
Writer& travel(const WipeTower::xy &dest, float f = 0.f)
{ return extrude_explicit(dest.x, dest.y, 0.f, f); }
// Extrude a line from current position to x, y with the extrusion amount given by m_extrusion_flow.
Writer& extrude(float x, float y, float f = 0.f)
{
float dx = x - m_current_pos.x;
float dy = y - m_current_pos.y;
return extrude_explicit(x, y, sqrt(dx*dx+dy*dy) * m_extrusion_flow, f);
}
Writer& extrude(const WipeTower::xy &dest, const float f = 0.f)
{ return extrude(dest.x, dest.y, f); }
Writer& rectangle(const WipeTower::xy& ld,float width,float height,const float f = 0.f)
{
WipeTower::xy corners[4];
corners[0] = ld;
corners[1] = WipeTower::xy(ld,width,0.f);
corners[2] = WipeTower::xy(ld,width,height);
corners[3] = WipeTower::xy(ld,0.f,height);
int index_of_closest = (x()-ld.x < ld.x+width-x() ? 0 : 1);
if (y()-ld.y > ld.y+height-x()) // closer to the top
index_of_closest += (index_of_closest==0 ? 3 : 1);
travel(corners[index_of_closest].x,y(),f); // travel to the closest corner
travel(x(),corners[index_of_closest].y,f);
int i = index_of_closest;
do {
++i;
if (i==4) i=0;
this->extrude(corners[i]);
} while (i != index_of_closest);
return (*this);
}
Writer& load(float e, float f = 0.f)
{
if (e == 0.f && (f == 0.f || f == m_current_feedrate))
return *this;
m_gcode += "G1";
if (e != 0.f)
m_gcode += set_format_E(e);
if (f != 0.f && f != m_current_feedrate)
m_gcode += set_format_F(f);
m_gcode += "\n";
return *this;
}
// Derectract while moving in the X direction.
// If |x| > 0, the feed rate relates to the x distance,
// otherwise the feed rate relates to the e distance.
Writer& load_move_x(float x, float e, float f = 0.f)
{ return extrude_explicit(x, m_current_pos.y, e, f); }
Writer& retract(float e, float f = 0.f)
{ return load(-e, f); }
// Elevate the extruder head above the current print_z position.
Writer& z_hop(float hop, float f = 0.f)
{
m_gcode += std::string("G1") + set_format_Z(m_current_z + hop);
if (f != 0 && f != m_current_feedrate)
m_gcode += set_format_F(f);
m_gcode += "\n";
return *this;
}
// Lower the extruder head back to the current print_z position.
Writer& z_hop_reset(float f = 0.f)
{ return z_hop(0, f); }
// Move to x1, +y_increment,
// extrude quickly amount e to x2 with feed f.
Writer& ram(float x1, float x2, float dy, float e0, float e, float f)
{
extrude_explicit(x1, m_current_pos.y + dy, e0, f);
extrude_explicit(x2, m_current_pos.y, e);
return *this;
}
// Let the end of the pulled out filament cool down in the cooling tube
// by moving up and down and moving the print head left / right
// at the current Y position to spread the leaking material.
Writer& cool(float x1, float x2, float e1, float e2, float f)
{
extrude_explicit(x1, m_current_pos.y, e1, f);
extrude_explicit(x2, m_current_pos.y, e2);
return *this;
}
Writer& set_tool(int tool)
{
char buf[64];
sprintf(buf, "T%d\n", tool);
m_gcode += buf;
m_current_tool = tool;
return *this;
}
// Set extruder temperature, don't wait by default.
Writer& set_extruder_temp(int temperature, bool wait = false)
{
char buf[128];
sprintf(buf, "M%d S%d\n", wait ? 109 : 104, temperature);
m_gcode += buf;
return *this;
};
// Wait for a period of time (seconds).
Writer& wait(float time)
{
if (time==0)
return *this;
char buf[128];
sprintf(buf, "G4 S%.3f\n", time);
m_gcode += buf;
return *this;
};
// Set speed factor override percentage.
Writer& speed_override(int speed)
{
char buf[128];
sprintf(buf, "M220 S%d\n", speed);
m_gcode += buf;
return *this;
};
// Set digital trimpot motor
Writer& set_extruder_trimpot(int current)
{
char buf[128];
sprintf(buf, "M907 E%d\n", current);
m_gcode += buf;
return *this;
};
Writer& flush_planner_queue()
{
m_gcode += "G4 S0\n";
return *this;
}
// Reset internal extruder counter.
Writer& reset_extruder()
{
m_gcode += "G92 E0\n";
return *this;
}
Writer& comment_with_value(const char *comment, int value)
{
char strvalue[64];
sprintf(strvalue, "%d", value);
m_gcode += std::string(";") + comment + strvalue + "\n";
return *this;
};
Writer& set_fan(unsigned int speed)
{
if (speed == m_last_fan_speed)
return *this;
if (speed == 0)
m_gcode += "M107\n";
else
{
m_gcode += "M106 S";
char buf[128];
sprintf(buf,"%u\n",(unsigned int)(255.0 * speed / 100.0));
m_gcode += buf;
}
m_last_fan_speed = speed;
return *this;
}
Writer& comment_material(WipeTowerPrusaMM::material_type material)
{
m_gcode += "; material : ";
switch (material)
{
case WipeTowerPrusaMM::PVA:
m_gcode += "#8 (PVA)";
break;
case WipeTowerPrusaMM::SCAFF:
m_gcode += "#5 (Scaffold)";
break;
case WipeTowerPrusaMM::FLEX:
m_gcode += "#4 (Flex)";
break;
default:
m_gcode += "DEFAULT (PLA)";
break;
}
m_gcode += "\n";
return *this;
};
Writer& append(const char *text) { m_gcode += text; return *this; }
private:
WipeTower::xy m_start_pos;
WipeTower::xy m_current_pos;
float m_current_z;
float m_current_feedrate;
unsigned int m_current_tool;
float m_layer_height;
float m_extrusion_flow;
bool m_preview_suppressed;
std::string m_gcode;
std::vector<WipeTower::Extrusion> m_extrusions;
float m_elapsed_time;
float m_angle_deg = 0.f;
float m_y_shift = 0.f;
WipeTower::xy m_wipe_tower_pos;
float m_wipe_tower_width = 0.f;
float m_wipe_tower_depth = 0.f;
float m_last_fan_speed = 0.f;
std::string
set_format_X(float x)
{
char buf[64];
sprintf(buf, " X%.3f", x);
m_current_pos.x = x;
return buf;
}
std::string set_format_Y(float y) {
char buf[64];
sprintf(buf, " Y%.3f", y);
m_current_pos.y = y;
return buf;
}
std::string set_format_Z(float z) {
char buf[64];
sprintf(buf, " Z%.3f", z);
return buf;
}
std::string set_format_E(float e) {
char buf[64];
sprintf(buf, " E%.4f", e);
return buf;
}
std::string set_format_F(float f) {
char buf[64];
sprintf(buf, " F%d", int(floor(f + 0.5f)));
m_current_feedrate = f;
return buf;
}
Writer& operator=(const Writer &rhs);
}; // class Writer
}; // namespace PrusaMultiMaterial
WipeTowerPrusaMM::material_type WipeTowerPrusaMM::parse_material(const char *name)
{
if (strcasecmp(name, "PLA") == 0)
return PLA;
if (strcasecmp(name, "ABS") == 0)
return ABS;
if (strcasecmp(name, "PET") == 0)
return PET;
if (strcasecmp(name, "HIPS") == 0)
return HIPS;
if (strcasecmp(name, "FLEX") == 0)
return FLEX;
if (strcasecmp(name, "SCAFF") == 0)
return SCAFF;
if (strcasecmp(name, "EDGE") == 0)
return EDGE;
if (strcasecmp(name, "NGEN") == 0)
return NGEN;
if (strcasecmp(name, "PVA") == 0)
return PVA;
return INVALID;
}
// Returns gcode to prime the nozzles at the front edge of the print bed.
WipeTower::ToolChangeResult WipeTowerPrusaMM::prime(
// print_z of the first layer.
float first_layer_height,
// Extruder indices, in the order to be primed. The last extruder will later print the wipe tower brim, print brim and the object.
const std::vector<unsigned int> &tools,
// 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.
// If false, the last priming are will be large enough to wipe the last extruder sufficiently.
bool last_wipe_inside_wipe_tower)
{
this->set_layer(first_layer_height, first_layer_height, tools.size(), true, false);
this->m_num_layer_changes = 0;
this->m_current_tool = tools.front();
// The Prusa i3 MK2 has a working space of [0, -2.2] to [250, 210].
// Due to the XYZ calibration, this working space may shrink slightly from all directions,
// therefore the homing position is shifted inside the bed by 0.2 in the firmware to [0.2, -2.0].
// box_coordinates cleaning_box(xy(0.5f, - 1.5f), m_wipe_tower_width, wipe_area);
const float prime_section_width = std::min(240.f / tools.size(), 60.f);
box_coordinates cleaning_box(xy(5.f, 0.f), prime_section_width, 100.f);
PrusaMultiMaterial::Writer writer;
writer.set_extrusion_flow(m_extrusion_flow)
.set_z(m_z_pos)
.set_layer_height(m_layer_height)
.set_initial_tool(m_current_tool)
.append(";--------------------\n"
"; CP PRIMING START\n")
.append(";--------------------\n")
.speed_override(100);
writer.set_initial_position(xy(0.f, 0.f)) // Always move to the starting position
.travel(cleaning_box.ld, 7200)
.set_extruder_trimpot(750); // Increase the extruder driver current to allow fast ramming.
// adds tag for analyzer
char buf[32];
sprintf(buf, ";%s%d\n", GCodeAnalyzer::Extrusion_Role_Tag.c_str(), erWipeTower);
writer.append(buf);
for (size_t idx_tool = 0; idx_tool < tools.size(); ++ idx_tool) {
unsigned int tool = tools[idx_tool];
m_left_to_right = true;
toolchange_Change(writer, tool, m_filpar[tool].material); // Select the tool, set a speed override for soluble and flex materials.
toolchange_Load(writer, cleaning_box); // Prime the tool.
if (idx_tool + 1 == tools.size()) {
// Last tool should not be unloaded, but it should be wiped enough to become of a pure color.
toolchange_Wipe(writer, cleaning_box, wipe_volumes[tools[idx_tool-1]][tool]);
} else {
// Ram the hot material out of the melt zone, retract the filament into the cooling tubes and let it cool.
//writer.travel(writer.x(), writer.y() + m_perimeter_width, 7200);
toolchange_Wipe(writer, cleaning_box , 20.f);
box_coordinates box = cleaning_box;
box.translate(0.f, writer.y() - cleaning_box.ld.y + m_perimeter_width);
toolchange_Unload(writer, box , m_filpar[m_current_tool].material, m_filpar[tools[idx_tool + 1]].first_layer_temperature);
cleaning_box.translate(prime_section_width, 0.f);
writer.travel(cleaning_box.ld, 7200);
}
++ m_num_tool_changes;
}
// Reset the extruder current to a normal value.
writer.set_extruder_trimpot(550)
.feedrate(6000)
.flush_planner_queue()
.reset_extruder()
.append("; CP PRIMING END\n"
";------------------\n"
"\n\n");
// so that tool_change() will know to extrude the wipe tower brim:
m_print_brim = true;
ToolChangeResult result;
result.print_z = this->m_z_pos;
result.layer_height = this->m_layer_height;
result.gcode = writer.gcode();
result.elapsed_time = writer.elapsed_time();
result.extrusions = writer.extrusions();
result.start_pos = writer.start_pos_rotated();
result.end_pos = writer.pos_rotated();
return result;
}
WipeTower::ToolChangeResult WipeTowerPrusaMM::tool_change(unsigned int tool, bool last_in_layer)
{
if ( m_print_brim )
return toolchange_Brim();
float wipe_area = 0.f;
bool last_change_in_layer = false;
float wipe_volume = 0.f;
// Finds this toolchange info
if (tool != (unsigned int)(-1))
{
for (const auto &b : m_layer_info->tool_changes)
if ( b.new_tool == tool ) {
wipe_volume = wipe_volumes[b.old_tool][b.new_tool];
if (tool == m_layer_info->tool_changes.back().new_tool)
last_change_in_layer = true;
wipe_area = b.required_depth * m_layer_info->extra_spacing;
break;
}
}
else {
// Otherwise we are going to Unload only. And m_layer_info would be invalid.
}
box_coordinates cleaning_box(
m_wipe_tower_pos + xy(m_perimeter_width / 2.f, m_perimeter_width / 2.f),
m_wipe_tower_width - m_perimeter_width,
(tool != (unsigned int)(-1) ? /*m_layer_info->depth*/wipe_area+m_depth_traversed-0.5*m_perimeter_width
: m_wipe_tower_depth-m_perimeter_width));
PrusaMultiMaterial::Writer writer;
writer.set_extrusion_flow(m_extrusion_flow)
.set_z(m_z_pos)
.set_layer_height(m_layer_height)
.set_initial_tool(m_current_tool)
.set_rotation(m_wipe_tower_pos, m_wipe_tower_width, m_wipe_tower_depth, m_wipe_tower_rotation_angle)
.set_y_shift(m_y_shift + (tool!=(unsigned int)(-1) && (m_current_shape == SHAPE_REVERSED && !m_peters_wipe_tower) ? m_layer_info->depth - m_layer_info->toolchanges_depth(): 0.f))
.append(";--------------------\n"
"; CP TOOLCHANGE START\n")
.comment_with_value(" toolchange #", m_num_tool_changes)
.comment_material(m_filpar[m_current_tool].material)
.append(";--------------------\n")
.speed_override(100);
xy initial_position = cleaning_box.ld + WipeTower::xy(0.f,m_depth_traversed);
writer.set_initial_position(initial_position);
// adds tag for analyzer
char buf[32];
sprintf(buf, ";%s%d\n", GCodeAnalyzer::Extrusion_Role_Tag.c_str(), erWipeTower);
writer.append(buf);
// Increase the extruder driver current to allow fast ramming.
writer.set_extruder_trimpot(750);
// Ram the hot material out of the melt zone, retract the filament into the cooling tubes and let it cool.
if (tool != (unsigned int)-1){ // This is not the last change.
toolchange_Unload(writer, cleaning_box, m_filpar[m_current_tool].material,
m_is_first_layer ? m_filpar[tool].first_layer_temperature : m_filpar[tool].temperature);
toolchange_Change(writer, tool, m_filpar[tool].material); // Change the tool, set a speed override for soluble and flex materials.
toolchange_Load(writer, cleaning_box);
writer.travel(writer.x(),writer.y()-m_perimeter_width); // cooling and loading were done a bit down the road
toolchange_Wipe(writer, cleaning_box, wipe_volume); // Wipe the newly loaded filament until the end of the assigned wipe area.
} else
toolchange_Unload(writer, cleaning_box, m_filpar[m_current_tool].material, m_filpar[m_current_tool].temperature);
++ m_num_tool_changes;
m_depth_traversed += wipe_area;
if (last_change_in_layer) {// draw perimeter line
writer.set_y_shift(m_y_shift);
if (m_peters_wipe_tower)
writer.rectangle(m_wipe_tower_pos,m_layer_info->depth + 3*m_perimeter_width,m_wipe_tower_depth);
else {
writer.rectangle(m_wipe_tower_pos,m_wipe_tower_width, m_layer_info->depth + m_perimeter_width);
if (layer_finished()) { // no finish_layer will be called, we must wipe the nozzle
writer.travel(m_wipe_tower_pos.x + (writer.x()>m_wipe_tower_pos.x + EPSILON ? 0.f : m_wipe_tower_width), writer.y());
}
}
}
writer.set_extruder_trimpot(550) // Reset the extruder current to a normal value.
.feedrate(6000)
.flush_planner_queue()
.reset_extruder()
.append("; CP TOOLCHANGE END\n"
";------------------\n"
"\n\n");
ToolChangeResult result;
result.print_z = this->m_z_pos;
result.layer_height = this->m_layer_height;
result.gcode = writer.gcode();
result.elapsed_time = writer.elapsed_time();
result.extrusions = writer.extrusions();
result.start_pos = writer.start_pos_rotated();
result.end_pos = writer.pos_rotated();
return result;
}
WipeTower::ToolChangeResult WipeTowerPrusaMM::toolchange_Brim(bool sideOnly, float y_offset)
{
const box_coordinates wipeTower_box(
m_wipe_tower_pos,
m_wipe_tower_width,
m_wipe_tower_depth);
PrusaMultiMaterial::Writer writer;
writer.set_extrusion_flow(m_extrusion_flow * 1.1f)
.set_z(m_z_pos) // Let the writer know the current Z position as a base for Z-hop.
.set_layer_height(m_layer_height)
.set_initial_tool(m_current_tool)
.set_rotation(m_wipe_tower_pos, m_wipe_tower_width, m_wipe_tower_depth, m_wipe_tower_rotation_angle)
.append(";-------------------------------------\n"
"; CP WIPE TOWER FIRST LAYER BRIM START\n");
xy initial_position = wipeTower_box.lu - xy(m_perimeter_width * 6.f, 0);
writer.set_initial_position(initial_position);
// adds tag for analyzer
char buf[32];
sprintf(buf, ";%s%d\n", GCodeAnalyzer::Extrusion_Role_Tag.c_str(), erWipeTower);
writer.append(buf)
.extrude_explicit(wipeTower_box.ld - xy(m_perimeter_width * 6.f, 0), // Prime the extruder left of the wipe tower.
1.5f * m_extrusion_flow * (wipeTower_box.lu.y - wipeTower_box.ld.y), 2400);
// The tool is supposed to be active and primed at the time when the wipe tower brim is extruded.
// Extrude 4 rounds of a brim around the future wipe tower.
box_coordinates box(wipeTower_box);
box.expand(m_perimeter_width);
for (size_t i = 0; i < 4; ++ i) {
writer.travel (box.ld, 7000)
.extrude(box.lu, 2100).extrude(box.ru)
.extrude(box.rd ).extrude(box.ld);
box.expand(m_perimeter_width);
}
writer.travel(wipeTower_box.ld, 7000); // Move to the front left corner.
writer.travel(wipeTower_box.rd) // Always wipe the nozzle with a long wipe to reduce stringing when moving away from the wipe tower.
.travel(wipeTower_box.ld);
writer.append("; CP WIPE TOWER FIRST LAYER BRIM END\n"
";-----------------------------------\n");
m_print_brim = false; // Mark the brim as extruded
ToolChangeResult result;
result.print_z = this->m_z_pos;
result.layer_height = this->m_layer_height;
result.gcode = writer.gcode();
result.elapsed_time = writer.elapsed_time();
result.extrusions = writer.extrusions();
result.start_pos = writer.start_pos_rotated();
result.end_pos = writer.pos_rotated();
return result;
}
// Ram the hot material out of the melt zone, retract the filament into the cooling tubes and let it cool.
void WipeTowerPrusaMM::toolchange_Unload(
PrusaMultiMaterial::Writer &writer,
const box_coordinates &cleaning_box,
const material_type current_material,
const int new_temperature)
{
float xl = cleaning_box.ld.x + 1.f * m_perimeter_width;
float xr = cleaning_box.rd.x - 1.f * m_perimeter_width;
writer.append("; CP TOOLCHANGE UNLOAD\n");
const float line_width = m_perimeter_width * m_filpar[m_current_tool].ramming_line_width_multiplicator; // desired ramming line thickness
const float y_step = line_width * m_filpar[m_current_tool].ramming_step_multiplicator * m_extra_spacing; // spacing between lines in mm
unsigned i = 0; // iterates through ramming_speed
m_left_to_right = true; // current direction of ramming
float remaining = xr - xl ; // keeps track of distance to the next turnaround
float e_done = 0; // measures E move done from each segment
writer.travel(xl, cleaning_box.ld.y + m_depth_traversed + y_step/2.f ); // move to starting position
// if the ending point of the ram would end up in mid air, align it with the end of the wipe tower:
if (m_layer_info > m_plan.begin() && m_layer_info < m_plan.end() && (m_layer_info-1!=m_plan.begin() || !m_adhesion )) {
// this is y of the center of previous sparse infill border
float sparse_beginning_y = m_wipe_tower_pos.y;
if (m_current_shape == SHAPE_REVERSED)
sparse_beginning_y += ((m_layer_info-1)->depth - (m_layer_info-1)->toolchanges_depth())
- ((m_layer_info)->depth-(m_layer_info)->toolchanges_depth()) ;
else
sparse_beginning_y += (m_layer_info-1)->toolchanges_depth() + m_perimeter_width;
//debugging:
/* float oldx = writer.x();
float oldy = writer.y();
writer.travel(xr,sparse_beginning_y);
writer.extrude(xr+5,writer.y());
writer.travel(oldx,oldy);*/
float sum_of_depths = 0.f;
for (const auto& tch : m_layer_info->tool_changes) { // let's find this toolchange
if (tch.old_tool == m_current_tool) {
sum_of_depths += tch.ramming_depth;
float ramming_end_y = m_wipe_tower_pos.y + sum_of_depths;
ramming_end_y -= (y_step/m_extra_spacing-m_perimeter_width) / 2.f; // center of final ramming line
// debugging:
/*float oldx = writer.x();
float oldy = writer.y();
writer.travel(xl,ramming_end_y);
writer.extrude(xl-15,writer.y());
writer.travel(oldx,oldy);*/
if ( (m_current_shape == SHAPE_REVERSED && ramming_end_y < sparse_beginning_y - 0.5f*m_perimeter_width ) ||
(m_current_shape == SHAPE_NORMAL && ramming_end_y > sparse_beginning_y + 0.5f*m_perimeter_width ) )
{
writer.extrude(xl + tch.first_wipe_line-1.f*m_perimeter_width,writer.y());
remaining -= tch.first_wipe_line-1.f*m_perimeter_width;
}
break;
}
sum_of_depths += tch.required_depth;
}
}
// now the ramming itself:
while (i < m_filpar[m_current_tool].ramming_speed.size())
{
const float x = volume_to_length(m_filpar[m_current_tool].ramming_speed[i] * 0.25f, line_width, m_layer_height);
const float e = m_filpar[m_current_tool].ramming_speed[i] * 0.25f / Filament_Area; // transform volume per sec to E move;
const float dist = std::min(x - e_done, remaining); // distance to travel for either the next 0.25s, or to the next turnaround
const float actual_time = dist/x * 0.25;
writer.ram(writer.x(), writer.x() + (m_left_to_right ? 1.f : -1.f) * dist, 0, 0, e * (dist / x), std::hypot(dist, e * (dist / x)) / (actual_time / 60.));
remaining -= dist;
if (remaining < WT_EPSILON) { // we reached a turning point
writer.travel(writer.x(), writer.y() + y_step, 7200);
m_left_to_right = !m_left_to_right;
remaining = xr - xl;
}
e_done += dist; // subtract what was actually done
if (e_done > x - WT_EPSILON) { // current segment finished
++i;
e_done = 0;
}
}
WipeTower::xy end_of_ramming(writer.x(),writer.y());
// Pull the filament end to the BEGINNING of the cooling tube while still moving the print head
float oldx = writer.x();
float turning_point = (!m_left_to_right ? std::max(xl,oldx-15.f) : std::min(xr,oldx+15.f) ); // so it's not too far
float xdist = std::abs(oldx-turning_point);
float edist = -(m_cooling_tube_retraction+m_cooling_tube_length/2.f-42);
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writer.suppress_preview()
.load_move_x(turning_point,-15 , 60.f * std::hypot(xdist,15)/15 * 83 ) // fixed speed after ramming
.load_move_x(oldx ,edist , 60.f * std::hypot(xdist,edist)/edist * m_filpar[m_current_tool].unloading_speed )
.load_move_x(turning_point,-15 , 60.f * std::hypot(xdist,15)/15 * m_filpar[m_current_tool].unloading_speed*0.55f )
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.load_move_x(oldx ,-12 , 60.f * std::hypot(xdist,12)/12 * m_filpar[m_current_tool].unloading_speed*0.35f )
.resume_preview();
if (new_temperature != 0) // Set the extruder temperature, but don't wait.
writer.set_extruder_temp(new_temperature, false);
// cooling:
writer.suppress_preview();
writer.travel(writer.x(), writer.y() + y_step);
const float start_x = writer.x();
turning_point = ( xr-start_x > start_x-xl ? xr : xl );
const float max_x_dist = 2*std::abs(start_x-turning_point);
const unsigned int N = 4 + std::max(0.f, (m_filpar[m_current_tool].cooling_time-14)/3);
float time = m_filpar[m_current_tool].cooling_time / float(N);
i = 0;
while (i<N) {
const float speed = std::min(3.4,2.2 + i*0.3 + (i==0 ? 0 : 0.3)); // mm per second: 2.2, 2.8, 3.1, 3.4, 3.4, 3.4, ...
const float e_dist = std::min(speed * time,2*m_cooling_tube_length); // distance to travel
// this move is the last one at this speed or someone set tube_length to zero
if (speed * time < 2*m_cooling_tube_length || m_cooling_tube_length<WT_EPSILON) {
++i;
time = m_filpar[m_current_tool].cooling_time / float(N);
}
else
time -= e_dist / speed; // subtract time this part will really take
// as for x, we will make sure the feedrate is at most 2000
float x_dist = (turning_point - WT_EPSILON < xl ? -1.f : 1.f) * std::min(e_dist * (float)sqrt(pow(2000 / (60 * speed), 2) - 1),max_x_dist);
const float feedrate = std::hypot(e_dist, x_dist) / ((e_dist / speed) / 60.f);
writer.cool(start_x+x_dist/2.f,start_x,e_dist/2.f,-e_dist/2.f, feedrate);
}
// let's wait is necessary
writer.wait(m_filpar[m_current_tool].delay);
// we should be at the beginning of the cooling tube again - let's move to parking position:
writer.retract(-m_cooling_tube_length/2.f+m_parking_pos_retraction-m_cooling_tube_retraction, 2000);
// this is to align ramming and future wiping extrusions, so the future y-steps can be uniform from the start:
// the perimeter_width will later be subtracted, it is there to not load while moving over just extruded material
writer.travel(end_of_ramming.x, end_of_ramming.y + (y_step/m_extra_spacing-m_perimeter_width) / 2.f + m_perimeter_width, 2400.f);
writer.resume_preview()
.flush_planner_queue();
}
// Change the tool, set a speed override for soluble and flex materials.
void WipeTowerPrusaMM::toolchange_Change(
PrusaMultiMaterial::Writer &writer,
const unsigned int new_tool,
material_type new_material)
{
// Speed override for the material. Go slow for flex and soluble materials.
int speed_override;
switch (new_material) {
case PVA: speed_override = (m_z_pos < 0.80f) ? 60 : 80; break;
case SCAFF: speed_override = 35; break;
case FLEX: speed_override = 35; break;
default: speed_override = 100;
}
writer.set_tool(new_tool)
.speed_override(speed_override)
.flush_planner_queue();
m_current_tool = new_tool;
}
void WipeTowerPrusaMM::toolchange_Load(
PrusaMultiMaterial::Writer &writer,
const box_coordinates &cleaning_box)
{
float xl = cleaning_box.ld.x + m_perimeter_width * 0.75f;
float xr = cleaning_box.rd.x - m_perimeter_width * 0.75f;
float oldx = writer.x(); // the nozzle is in place to do the first wiping moves, we will remember the position
// Load the filament while moving left / right, so the excess material will not create a blob at a single position.
float loading_speed = m_filpar[m_current_tool].loading_speed; // mm/s in e axis
float turning_point = ( oldx-xl < xr-oldx ? xr : xl );
float dist = std::abs(oldx-turning_point);
float edist = m_parking_pos_retraction-50-2; // loading is 2mm shorter that previous retraction, 50mm reserved for acceleration/deceleration
writer.append("; CP TOOLCHANGE LOAD\n")
.suppress_preview()
.load_move_x(turning_point, 20, 60*std::hypot(dist,20.f)/20.f * loading_speed*0.3f) // Acceleration
.load_move_x(oldx,edist,60*std::hypot(dist,edist)/edist * loading_speed) // Fast phase
.load_move_x(turning_point, 20, 60*std::hypot(dist,20.f)/20.f * loading_speed*0.3f) // Slowing down
.load_move_x(oldx, 10, 60*std::hypot(dist,10.f)/10.f * loading_speed*0.1f) // Super slow
.resume_preview();
// Reset the extruder current to the normal value.
writer.set_extruder_trimpot(550);
}
// Wipe the newly loaded filament until the end of the assigned wipe area.
void WipeTowerPrusaMM::toolchange_Wipe(
PrusaMultiMaterial::Writer &writer,
const box_coordinates &cleaning_box,
float wipe_volume)
{
// Increase flow on first layer, slow down print.
writer.set_extrusion_flow(m_extrusion_flow * (m_is_first_layer ? 1.18f : 1.f))
.append("; CP TOOLCHANGE WIPE\n");
float wipe_coeff = m_is_first_layer ? 0.5f : 1.f;
const float& xl = cleaning_box.ld.x;
const float& xr = cleaning_box.rd.x;
// Variables x_to_wipe and traversed_x are here to be able to make sure it always wipes at least
// the ordered volume, even if it means violating the box. This can later be removed and simply
// wipe until the end of the assigned area.
float x_to_wipe = volume_to_length(wipe_volume, m_perimeter_width, m_layer_height);
float dy = m_extra_spacing*m_perimeter_width;
float wipe_speed = 1600.f;
// if there is less than 2.5*m_perimeter_width to the edge, advance straightaway (there is likely a blob anyway)
if ((m_left_to_right ? xr-writer.x() : writer.x()-xl) < 2.5f*m_perimeter_width) {
writer.travel((m_left_to_right ? xr-m_perimeter_width : xl+m_perimeter_width),writer.y()+dy);
m_left_to_right = !m_left_to_right;
}
// now the wiping itself:
for (int i = 0; true; ++i) {
if (i!=0) {
if (wipe_speed < 1610.f) wipe_speed = 1800.f;
else if (wipe_speed < 1810.f) wipe_speed = 2200.f;
else if (wipe_speed < 2210.f) wipe_speed = 4200.f;
else wipe_speed = std::min(4800.f, wipe_speed + 50.f);
}
float traversed_x = writer.x();
if (m_left_to_right)
writer.extrude(xr - (i % 4 == 0 ? 0 : 1.5*m_perimeter_width), writer.y(), wipe_speed * wipe_coeff);
else
writer.extrude(xl + (i % 4 == 1 ? 0 : 1.5*m_perimeter_width), writer.y(), wipe_speed * wipe_coeff);
if (writer.y()+EPSILON > cleaning_box.lu.y-0.5f*m_perimeter_width)
break; // in case next line would not fit
traversed_x -= writer.x();
x_to_wipe -= fabs(traversed_x);
if (x_to_wipe < WT_EPSILON) {
writer.travel(m_left_to_right ? xl + 1.5*m_perimeter_width : xr - 1.5*m_perimeter_width, writer.y(), 7200);
break;
}
// stepping to the next line:
writer.extrude(writer.x() + (i % 4 == 0 ? -1.f : (i % 4 == 1 ? 1.f : 0.f)) * 1.5*m_perimeter_width, writer.y() + dy);
m_left_to_right = !m_left_to_right;
}
// this is neither priming nor not the last toolchange on this layer - we are going back to the model - wipe the nozzle
if (m_layer_info != m_plan.end() && m_current_tool != m_layer_info->tool_changes.back().new_tool) {
m_left_to_right = !m_left_to_right;
writer.travel(writer.x(), writer.y() - dy)
.travel(m_wipe_tower_pos.x + (m_left_to_right ? m_wipe_tower_width : 0.f), writer.y());
}
writer.set_extrusion_flow(m_extrusion_flow); // Reset the extrusion flow.
}
WipeTower::ToolChangeResult WipeTowerPrusaMM::finish_layer()
{
// This should only be called if the layer is not finished yet.
// Otherwise the caller would likely travel to the wipe tower in vain.
assert(! this->layer_finished());
PrusaMultiMaterial::Writer writer;
writer.set_extrusion_flow(m_extrusion_flow)
.set_z(m_z_pos)
.set_layer_height(m_layer_height)
.set_initial_tool(m_current_tool)
.set_rotation(m_wipe_tower_pos, m_wipe_tower_width, m_wipe_tower_depth, m_wipe_tower_rotation_angle)
.set_y_shift(m_y_shift - (m_current_shape == SHAPE_REVERSED && !m_peters_wipe_tower ? m_layer_info->toolchanges_depth() : 0.f))
.append(";--------------------\n"
"; CP EMPTY GRID START\n")
// m_num_layer_changes is incremented by set_z, so it is 1 based.
.comment_with_value(" layer #", m_num_layer_changes - 1);
// Slow down on the 1st layer.
float speed_factor = m_is_first_layer ? 0.5f : 1.f;
float current_depth = m_layer_info->depth - m_layer_info->toolchanges_depth();
box_coordinates fill_box(m_wipe_tower_pos + xy(m_perimeter_width, m_depth_traversed + m_perimeter_width),
m_wipe_tower_width - 2 * m_perimeter_width, current_depth-m_perimeter_width);
if (m_left_to_right) // so there is never a diagonal travel
writer.set_initial_position(fill_box.ru);
else
writer.set_initial_position(fill_box.lu);
box_coordinates box = fill_box;
for (int i=0;i<2;++i) {
if (m_layer_info->toolchanges_depth() < WT_EPSILON) { // there were no toolchanges on this layer
if (i==0) box.expand(m_perimeter_width);
else box.expand(-m_perimeter_width);
}
else i=2; // only draw the inner perimeter, outer has been already drawn by tool_change(...)
writer.rectangle(box.ld,box.rd.x-box.ld.x,box.ru.y-box.rd.y,2900*speed_factor);
}
// we are in one of the corners, travel to ld along the perimeter:
if (writer.x() > fill_box.ld.x+EPSILON) writer.travel(fill_box.ld.x,writer.y());
if (writer.y() > fill_box.ld.y+EPSILON) writer.travel(writer.x(),fill_box.ld.y);
if (m_is_first_layer && m_adhesion) {
// Extrude a dense infill at the 1st layer to improve 1st layer adhesion of the wipe tower.
box.expand(-m_perimeter_width/2.f);
int nsteps = int(floor((box.lu.y - box.ld.y) / (2*m_perimeter_width)));
float step = (box.lu.y - box.ld.y) / nsteps;
writer.travel(box.ld-xy(m_perimeter_width/2.f,m_perimeter_width/2.f));
if (nsteps >= 0)
for (int i = 0; i < nsteps; ++i) {
writer.extrude(box.ld.x+m_perimeter_width/2.f, writer.y() + 0.5f * step);
writer.extrude(box.rd.x - m_perimeter_width / 2.f, writer.y());
writer.extrude(box.rd.x - m_perimeter_width / 2.f, writer.y() + 0.5f * step);
writer.extrude(box.ld.x + m_perimeter_width / 2.f, writer.y());
}
writer.travel(box.rd.x-m_perimeter_width/2.f,writer.y()); // wipe the nozzle
}
else { // Extrude a sparse infill to support the material to be printed above.
const float dy = (fill_box.lu.y - fill_box.ld.y - m_perimeter_width);
const float left = fill_box.lu.x+2*m_perimeter_width;
const float right = fill_box.ru.x - 2 * m_perimeter_width;
if (dy > m_perimeter_width)
{
// Extrude an inverse U at the left of the region.
writer.travel(fill_box.ld + xy(m_perimeter_width * 2, 0.f))
.extrude(fill_box.lu + xy(m_perimeter_width * 2, 0.f), 2900 * speed_factor);
const int n = 1+(right-left)/(m_bridging);
const float dx = (right-left)/n;
for (int i=1;i<=n;++i) {
float x=left+dx*i;
writer.travel(x,writer.y());
writer.extrude(x,i%2 ? fill_box.rd.y : fill_box.ru.y);
}
writer.travel(left,writer.y(),7200); // wipes the nozzle before moving away from the wipe tower
}
else
writer.travel(right,writer.y(),7200); // wipes the nozzle before moving away from the wipe tower
}
writer.append("; CP EMPTY GRID END\n"
";------------------\n\n\n\n\n\n\n");
m_depth_traversed = m_wipe_tower_depth-m_perimeter_width;
ToolChangeResult result;
result.print_z = this->m_z_pos;
result.layer_height = this->m_layer_height;
result.gcode = writer.gcode();
result.elapsed_time = writer.elapsed_time();
result.extrusions = writer.extrusions();
result.start_pos = writer.start_pos_rotated();
result.end_pos = writer.pos_rotated();
return result;
}
// Appends a toolchange into m_plan and calculates neccessary depth of the corresponding box
void WipeTowerPrusaMM::plan_toolchange(float z_par, float layer_height_par, unsigned int old_tool, unsigned int new_tool,bool brim)
{
assert(m_plan.back().z <= z_par + WT_EPSILON ); // refuses to add a layer below the last one
if (m_plan.empty() || m_plan.back().z + WT_EPSILON < z_par) // if we moved to a new layer, we'll add it to m_plan first
m_plan.push_back(WipeTowerInfo(z_par, layer_height_par));
if (brim) { // this toolchange prints brim - we must add it to m_plan, but not to count its depth
m_plan.back().tool_changes.push_back(WipeTowerInfo::ToolChange(old_tool, new_tool));
return;
}
if (old_tool==new_tool) // new layer without toolchanges - we are done
return;
// this is an actual toolchange - let's calculate depth to reserve on the wipe tower
float depth = 0.f;
float width = m_wipe_tower_width - 3*m_perimeter_width;
float length_to_extrude = volume_to_length(0.25f * std::accumulate(m_filpar[old_tool].ramming_speed.begin(), m_filpar[old_tool].ramming_speed.end(), 0.f),
m_perimeter_width * m_filpar[old_tool].ramming_line_width_multiplicator,
layer_height_par);
depth = (int(length_to_extrude / width) + 1) * (m_perimeter_width * m_filpar[old_tool].ramming_line_width_multiplicator * m_filpar[old_tool].ramming_step_multiplicator);
float ramming_depth = depth;
length_to_extrude = width*((length_to_extrude / width)-int(length_to_extrude / width)) - width;
float first_wipe_line = -length_to_extrude;
length_to_extrude += volume_to_length(wipe_volumes[old_tool][new_tool], m_perimeter_width, layer_height_par);
length_to_extrude = std::max(length_to_extrude,0.f);
depth += (int(length_to_extrude / width) + 1) * m_perimeter_width;
depth *= m_extra_spacing;
m_plan.back().tool_changes.push_back(WipeTowerInfo::ToolChange(old_tool, new_tool, depth, ramming_depth,first_wipe_line));
}
void WipeTowerPrusaMM::plan_tower()
{
// Calculate m_wipe_tower_depth (maximum depth for all the layers) and propagate depths downwards
m_wipe_tower_depth = 0.f;
for (auto& layer : m_plan)
layer.depth = 0.f;
for (int layer_index = m_plan.size() - 1; layer_index >= 0; --layer_index)
{
float this_layer_depth = std::max(m_plan[layer_index].depth, m_plan[layer_index].toolchanges_depth());
m_plan[layer_index].depth = this_layer_depth;
if (this_layer_depth > m_wipe_tower_depth - m_perimeter_width)
m_wipe_tower_depth = this_layer_depth + m_perimeter_width;
for (int i = layer_index - 1; i >= 0 /*&& m_plan[i].depth < this_layer_depth*/; i--)
{
2018-02-28 18:53:32 +00:00
if (m_plan[i].depth - this_layer_depth < 2*m_perimeter_width )
m_plan[i].depth = this_layer_depth;
}
}
}
void WipeTowerPrusaMM::save_on_last_wipe()
{
for (m_layer_info=m_plan.begin();m_layer_info<m_plan.end();++m_layer_info) {
set_layer(m_layer_info->z, m_layer_info->height, 0, m_layer_info->z == m_plan.front().z, m_layer_info->z == m_plan.back().z);
if (m_layer_info->tool_changes.size()==0) // we have no way to save anything on an empty layer
continue;
for (const auto &toolchange : m_layer_info->tool_changes)
tool_change(toolchange.new_tool, false);
float width = m_wipe_tower_width - 3*m_perimeter_width; // width we draw into
float length_to_save = 2*(m_wipe_tower_width+m_wipe_tower_depth) + (!layer_finished() ? finish_layer().total_extrusion_length_in_plane() : 0.f);
float length_to_wipe = volume_to_length(wipe_volumes[m_layer_info->tool_changes.back().old_tool][m_layer_info->tool_changes.back().new_tool],
m_perimeter_width,m_layer_info->height) - m_layer_info->tool_changes.back().first_wipe_line - length_to_save;
length_to_wipe = std::max(length_to_wipe,0.f);
float depth_to_wipe = m_perimeter_width * (std::floor(length_to_wipe/width) + ( length_to_wipe > 0.f ? 1.f : 0.f ) ) * m_extra_spacing;
//depth += (int(length_to_extrude / width) + 1) * m_perimeter_width;
m_layer_info->tool_changes.back().required_depth = m_layer_info->tool_changes.back().ramming_depth + depth_to_wipe;
}
}
// Processes vector m_plan and calls respective functions to generate G-code for the wipe tower
// Resulting ToolChangeResults are appended into vector "result"
void WipeTowerPrusaMM::generate(std::vector<std::vector<WipeTower::ToolChangeResult>> &result)
{
if (m_plan.empty()) return;
m_extra_spacing = 1.f;
plan_tower();
for (int i=0;i<5;++i) {
save_on_last_wipe();
plan_tower();
}
if (m_peters_wipe_tower)
make_wipe_tower_square();
m_layer_info = m_plan.begin();
std::vector<WipeTower::ToolChangeResult> layer_result;
for (auto layer : m_plan)
{
set_layer(layer.z,layer.height,0,layer.z == m_plan.front().z,layer.z == m_plan.back().z);
if (m_peters_wipe_tower)
m_wipe_tower_rotation_angle += 90.f;
else
m_wipe_tower_rotation_angle += 180.f;
if (!m_peters_wipe_tower && m_layer_info->depth < m_wipe_tower_depth - m_perimeter_width)
m_y_shift = (m_wipe_tower_depth-m_layer_info->depth-m_perimeter_width)/2.f;
for (const auto &toolchange : layer.tool_changes)
layer_result.emplace_back(tool_change(toolchange.new_tool, false));
if (! layer_finished()) {
auto finish_layer_toolchange = finish_layer();
if (layer_result.size() > 1) { // we will merge it to the last toolchange
auto& last_toolchange = layer_result.back();
if (last_toolchange.end_pos != finish_layer_toolchange.start_pos) {
char buf[2048]; // Add a travel move from tc1.end_pos to tc2.start_pos.
sprintf(buf, "G1 X%.3f Y%.3f F7200\n", finish_layer_toolchange.start_pos.x, finish_layer_toolchange.start_pos.y);
last_toolchange.gcode += buf;
}
last_toolchange.gcode += finish_layer_toolchange.gcode;
last_toolchange.extrusions.insert(last_toolchange.extrusions.end(),finish_layer_toolchange.extrusions.begin(),finish_layer_toolchange.extrusions.end());
last_toolchange.end_pos = finish_layer_toolchange.end_pos;
}
else
layer_result.emplace_back(std::move(finish_layer_toolchange));
}
result.emplace_back(std::move(layer_result));
m_is_first_layer = false;
}
}
void WipeTowerPrusaMM::make_wipe_tower_square()
{
const float width = m_wipe_tower_width - 3 * m_perimeter_width;
const float depth = m_wipe_tower_depth - m_perimeter_width;
// area that we actually print into is width*depth
float side = sqrt(depth * width);
m_wipe_tower_width = side + 3 * m_perimeter_width;
m_wipe_tower_depth = side + 2 * m_perimeter_width;
// For all layers, find how depth changed and update all toolchange depths
for (auto &lay : m_plan)
{
side = sqrt(lay.depth * width);
float width_ratio = width / side;
//lay.extra_spacing = width_ratio;
for (auto &tch : lay.tool_changes)
tch.required_depth *= width_ratio;
}
plan_tower(); // propagates depth downwards again (width has changed)
for (auto& lay : m_plan) // depths set, now the spacing
lay.extra_spacing = lay.depth / lay.toolchanges_depth();
}
}; // namespace Slic3r