#include <src/libslic3r/GCode/CoolingBuffer.hpp>

Collaboration diagram for Slic3r::CoolingBuffer:

Public Member Functions
	CoolingBuffer (GCode &gcodegen)

void	reset (const Vec3d &position)

void	set_current_extruder (unsigned int extruder_id)

std::string	process_layer (std::string &&gcode, size_t layer_id, bool flush)

std::string	process_layer (const std::string &gcode, size_t layer_id, bool flush)

Private Member Functions
CoolingBuffer &	operator= (const CoolingBuffer &)=delete

std::vector< PerExtruderAdjustments >	parse_layer_gcode (const std::string &gcode, std::vector< float > &current_pos) const

float	calculate_layer_slowdown (std::vector< PerExtruderAdjustments > &per_extruder_adjustments)

std::string	apply_layer_cooldown (const std::string &gcode, size_t layer_id, float layer_time, std::vector< PerExtruderAdjustments > &per_extruder_adjustments)

Private Attributes
std::string	m_gcode

std::vector< char >	m_axis

std::vector< float >	m_current_pos

int	m_fan_speed

std::vector< unsigned int >	m_extruder_ids

unsigned int	m_num_extruders { 0 }

const std::string	m_toolchange_prefix

const PrintConfig &	m_config

unsigned int	m_current_extruder

bool	m_cooling_logic_proportional = false

Detailed Description

Constructor & Destructor Documentation

◆ CoolingBuffer()

Slic3r::CoolingBuffer::CoolingBuffer ( GCode & gcodegen )

                                            : m_config(gcodegen.config()), m_toolchange_prefix(gcodegen.writer().toolchange_prefix()), m_current_extruder(0)
{
    this->reset(gcodegen.writer().get_position());
 
    const std::vector<Extruder> &extruders = gcodegen.writer().extruders();
    m_extruder_ids.reserve(extruders.size());
    for (const Extruder &ex : extruders) {
        m_num_extruders = std::max(ex.id() + 1, m_num_extruders);
        m_extruder_ids.emplace_back(ex.id());
    }
}

References Slic3r::GCodeWriter::extruders(), Slic3r::GCodeWriter::get_position(), m_extruder_ids, m_num_extruders, reset(), and Slic3r::GCode::writer().

Here is the call graph for this function:

Member Function Documentation

◆ apply_layer_cooldown()

std::string Slic3r::CoolingBuffer::apply_layer_cooldown	(	const std::string &	gcode,
		size_t	layer_id,
		float	layer_time,
		std::vector< PerExtruderAdjustments > &	per_extruder_adjustments
	)

private

{
    // First sort the adjustment lines by of multiple extruders by their position in the source G-code.
    std::vector<const CoolingLine*> lines;
    {
        size_t n_lines = 0;
        for (const PerExtruderAdjustments &adj : per_extruder_adjustments)
            n_lines += adj.lines.size();
        lines.reserve(n_lines);
        for (const PerExtruderAdjustments &adj : per_extruder_adjustments)
            for (const CoolingLine &line : adj.lines)
                lines.emplace_back(&line);
        std::sort(lines.begin(), lines.end(), [](const CoolingLine *ln1, const CoolingLine *ln2) { return ln1->line_start < ln2->line_start; } );
    }
    // Second generate the adjusted G-code.
    std::string new_gcode;
    new_gcode.reserve(gcode.size() * 2);
    bool bridge_fan_control = false;
    int  bridge_fan_speed   = 0;
    auto change_extruder_set_fan = [this, layer_id, layer_time, &new_gcode, &bridge_fan_control, &bridge_fan_speed]() {
#define EXTRUDER_CONFIG(OPT) m_config.OPT.get_at(m_current_extruder)
        int min_fan_speed = EXTRUDER_CONFIG(min_fan_speed);
        int fan_speed_new = EXTRUDER_CONFIG(fan_always_on) ? min_fan_speed : 0;
        std::pair<int, int> custom_fan_speed_limits{fan_speed_new, 100 };
        int disable_fan_first_layers = EXTRUDER_CONFIG(disable_fan_first_layers);
        // Is the fan speed ramp enabled?
        int full_fan_speed_layer = EXTRUDER_CONFIG(full_fan_speed_layer);
        if (disable_fan_first_layers <= 0 && full_fan_speed_layer > 0) {
            // When ramping up fan speed from disable_fan_first_layers to full_fan_speed_layer, force disable_fan_first_layers above zero,
            // so there will be a zero fan speed at least at the 1st layer.
            disable_fan_first_layers = 1;
        }
        if (int(layer_id) >= disable_fan_first_layers) {
            int   max_fan_speed             = EXTRUDER_CONFIG(max_fan_speed);
            float slowdown_below_layer_time = float(EXTRUDER_CONFIG(slowdown_below_layer_time));
            float fan_below_layer_time      = float(EXTRUDER_CONFIG(fan_below_layer_time));
            if (EXTRUDER_CONFIG(cooling)) {
                if (layer_time < slowdown_below_layer_time) {
                    // Layer time very short. Enable the fan to a full throttle.
                    fan_speed_new = max_fan_speed;
                    custom_fan_speed_limits.first = fan_speed_new;
                } else if (layer_time < fan_below_layer_time) {
                    // Layer time quite short. Enable the fan proportionally according to the current layer time.
                    assert(layer_time >= slowdown_below_layer_time);
                    double t = (layer_time - slowdown_below_layer_time) / (fan_below_layer_time - slowdown_below_layer_time);
                    fan_speed_new = int(floor(t * min_fan_speed + (1. - t) * max_fan_speed) + 0.5);
                    custom_fan_speed_limits.first = fan_speed_new;
                }
            }
            bridge_fan_speed   = EXTRUDER_CONFIG(bridge_fan_speed);
            if (int(layer_id) >= disable_fan_first_layers && int(layer_id) + 1 < full_fan_speed_layer) {
                // Ramp up the fan speed from disable_fan_first_layers to full_fan_speed_layer.
                float factor = float(int(layer_id + 1) - disable_fan_first_layers) / float(full_fan_speed_layer - disable_fan_first_layers);
                fan_speed_new    = std::clamp(int(float(fan_speed_new) * factor + 0.5f), 0, 255);
                bridge_fan_speed = std::clamp(int(float(bridge_fan_speed) * factor + 0.5f), 0, 255);
                custom_fan_speed_limits.second = fan_speed_new;
            }
#undef EXTRUDER_CONFIG
            bridge_fan_control = bridge_fan_speed > fan_speed_new;
        } else { // fan disabled
            bridge_fan_control = false;
            bridge_fan_speed   = 0;
            fan_speed_new      = 0;
            custom_fan_speed_limits.second = 0;
        }
        if (fan_speed_new != m_fan_speed) {
            m_fan_speed = fan_speed_new;
            new_gcode  += GCodeWriter::set_fan(m_config.gcode_flavor, m_config.gcode_comments, m_fan_speed);
        }
        custom_fan_speed_limits.first = std::min(custom_fan_speed_limits.first, custom_fan_speed_limits.second);
        return custom_fan_speed_limits;
    };
 
    const char         *pos               = gcode.c_str();
    int                 current_feedrate  = 0;
    std::pair<int,int> fan_speed_limits = change_extruder_set_fan();
    for (const CoolingLine *line : lines) {
        const char *line_start  = gcode.c_str() + line->line_start;
        const char *line_end    = gcode.c_str() + line->line_end;
        if (line_start > pos)
            new_gcode.append(pos, line_start - pos);
        if (line->type & CoolingLine::TYPE_SET_TOOL) {
            unsigned int new_extruder = 0;
            auto res = std::from_chars(line_start + m_toolchange_prefix.size(), line_end, new_extruder);
            if (res.ec != std::errc::invalid_argument && new_extruder != m_current_extruder) {
                m_current_extruder = new_extruder;
                fan_speed_limits = change_extruder_set_fan();
            }
            new_gcode.append(line_start, line_end - line_start);
        } else if (line->type & CoolingLine::TYPE_SET_FAN_SPEED) {
            int new_speed = std::clamp(line->fan_speed, fan_speed_limits.first, fan_speed_limits.second);
            if (m_fan_speed != new_speed) {
                new_gcode += GCodeWriter::set_fan(m_config.gcode_flavor, m_config.gcode_comments, new_speed);
                m_fan_speed = new_speed;
            }
        } else if (line->type & CoolingLine::TYPE_RESET_FAN_SPEED){
            fan_speed_limits = change_extruder_set_fan();
        } else if (line->type & CoolingLine::TYPE_BRIDGE_FAN_START) {
            if (bridge_fan_control)
                new_gcode += GCodeWriter::set_fan(m_config.gcode_flavor, m_config.gcode_comments, bridge_fan_speed);
        } else if (line->type & CoolingLine::TYPE_BRIDGE_FAN_END) {
            if (bridge_fan_control)
                new_gcode += GCodeWriter::set_fan(m_config.gcode_flavor, m_config.gcode_comments, m_fan_speed);
        } else if (line->type & CoolingLine::TYPE_EXTRUDE_END) {
            // Just remove this comment.
        } else if (line->type & (CoolingLine::TYPE_ADJUSTABLE | CoolingLine::TYPE_ADJUSTABLE_EMPTY | CoolingLine::TYPE_EXTERNAL_PERIMETER | CoolingLine::TYPE_WIPE | CoolingLine::TYPE_HAS_F)) {
            // Find the start of a comment, or roll to the end of line.
            const char *end = line_start;
            for (; end < line_end && *end != ';'; ++ end);
            // Find the 'F' word.
            const char *fpos            = strstr(line_start + 2, " F") + 2;
            int         new_feedrate    = current_feedrate;
            // Modify the F word of the current G-code line.
            bool        modify          = false;
            // Remove the F word from the current G-code line.
            bool        remove          = false;
            assert(fpos != nullptr);
            if (line->slowdown)
                new_feedrate = int(floor(60. * line->feedrate + 0.5));
            else
                //auto res = 
                    std::from_chars(fpos, line_end, new_feedrate);
            if (new_feedrate == current_feedrate) {
                // No need to change the F value.
                if ((line->type & (CoolingLine::TYPE_ADJUSTABLE | CoolingLine::TYPE_ADJUSTABLE_EMPTY | CoolingLine::TYPE_EXTERNAL_PERIMETER | CoolingLine::TYPE_WIPE)) || line->length == 0.)
                    // Feedrate does not change and this line does not move the print head. Skip the complete G-code line including the G-code comment.
                    end = line_end;
                else
                    // Remove the feedrate from the G0/G1 line. The G-code line may become empty!
                    remove = true;
            } else if (line->slowdown) {
                // The F value will be overwritten.
                modify = true;
            } else {
                // The F value is different from current_feedrate, but not slowed down, thus the G-code line will not be modified.
                // Emit the line without the comment.
                new_gcode.append(line_start, end - line_start);
                current_feedrate = new_feedrate;
            }
            if (modify || remove) {
                if (modify) {
                    // Replace the feedrate.
                    new_gcode.append(line_start, fpos - line_start);
                    current_feedrate = new_feedrate;
                    char buf[64];
                    sprintf(buf, "%d", int(current_feedrate));
                    new_gcode += buf;
                } else {
                    // Remove the feedrate word.
                    const char *f = fpos;
                    // Roll the pointer before the 'F' word.
                    for (f -= 2; f > line_start && (*f == ' ' || *f == '\t'); -- f);
                    // Append up to the F word, without the trailing whitespace.
                    new_gcode.append(line_start, f - line_start + 1);
                }
                // Skip the non-whitespaces of the F parameter up the comment or end of line.
                for (; fpos != end && *fpos != ' ' && *fpos != ';' && *fpos != '\n'; ++ fpos);
                // Append the rest of the line without the comment.
                if (remove && (fpos == end || *fpos == '\n') && (new_gcode == "G1" || boost::ends_with(new_gcode, "\nG1"))) {
                    // The G-code line only contained the F word, now it is empty. Remove it completely including the comments.
                    new_gcode.resize(new_gcode.size() - 2);
                    end = line_end;
                } else {
                    // The G-code line may not be empty yet. Emit the rest of it.
                    new_gcode.append(fpos, end - fpos);
                }
            }
            // Process the rest of the line.
            if (end < line_end) {
                if (line->type & (CoolingLine::TYPE_ADJUSTABLE | CoolingLine::TYPE_ADJUSTABLE_EMPTY | CoolingLine::TYPE_EXTERNAL_PERIMETER | CoolingLine::TYPE_WIPE)) {
                    // Process comments, remove ";_EXTRUDE_SET_SPEED", ";_EXTERNAL_PERIMETER", ";_WIPE"
                    std::string comment(end, line_end);
                    boost::replace_all(comment, ";_EXTRUDE_SET_SPEED", "");
                    if (line->type & CoolingLine::TYPE_EXTERNAL_PERIMETER)
                        boost::replace_all(comment, ";_EXTERNAL_PERIMETER", "");
                    if (line->type & CoolingLine::TYPE_WIPE)
                        boost::replace_all(comment, ";_WIPE", "");
                    new_gcode += comment;
                } else {
                    // Just attach the rest of the source line.
                    new_gcode.append(end, line_end - end);
                }
            }
        } else {
            new_gcode.append(line_start, line_end - line_start);
        }
        pos = line_end;
    }
    const char *gcode_end = gcode.c_str() + gcode.size();
    if (pos < gcode_end)
        new_gcode.append(pos, gcode_end - pos);
 
    // There should be no empty G1 lines emitted.
    assert(new_gcode.find("G1\n") == std::string::npos);
    return new_gcode;
}

Referenced by process_layer().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ calculate_layer_slowdown()

float Slic3r::CoolingBuffer::calculate_layer_slowdown ( std::vector< PerExtruderAdjustments > & per_extruder_adjustments )

private

{
    // Sort the extruders by an increasing slowdown_below_layer_time.
    // The layers with a lower slowdown_below_layer_time are slowed down
    // together with all the other layers with slowdown_below_layer_time above.
    std::vector<PerExtruderAdjustments*> by_slowdown_time;
    by_slowdown_time.reserve(per_extruder_adjustments.size());
    // Only insert entries, which are adjustable (have cooling enabled and non-zero stretchable time).
    // Collect total print time of non-adjustable extruders.
    float elapsed_time_total0 = 0.f;
    for (PerExtruderAdjustments &adj : per_extruder_adjustments) {
        // Curren total time for this extruder.
        adj.time_total  = adj.elapsed_time_total();
        // Maximum time for this extruder, when all extrusion moves are slowed down to min_extrusion_speed.
        adj.time_maximum = adj.maximum_time_after_slowdown(true);
        if (adj.cooling_slow_down_enabled && adj.lines.size() > 0) {
            by_slowdown_time.emplace_back(&adj);
            if (! m_cooling_logic_proportional)
                // sorts the lines, also sets adj.time_non_adjustable
                adj.sort_lines_by_decreasing_feedrate();
        } else
            elapsed_time_total0 += adj.elapsed_time_total();
    }
    std::sort(by_slowdown_time.begin(), by_slowdown_time.end(),
        [](const PerExtruderAdjustments *adj1, const PerExtruderAdjustments *adj2)
            { return adj1->slowdown_below_layer_time < adj2->slowdown_below_layer_time; });
 
    for (auto cur_begin = by_slowdown_time.begin(); cur_begin != by_slowdown_time.end(); ++ cur_begin) {
        PerExtruderAdjustments &adj = *(*cur_begin);
        // Calculate the current adjusted elapsed_time_total over the non-finalized extruders.
        float total = elapsed_time_total0;
        for (auto it = cur_begin; it != by_slowdown_time.end(); ++ it)
            total += (*it)->time_total;
        float slowdown_below_layer_time = adj.slowdown_below_layer_time * 1.001f;
        if (total > slowdown_below_layer_time) {
            // The current total time is above the minimum threshold of the rest of the extruders, don't adjust anything.
        } else {
            // Adjust this and all the following (higher m_config.slowdown_below_layer_time) extruders.
            // Sum maximum slow down time as if everything was slowed down including the external perimeters.
            float max_time = elapsed_time_total0;
            for (auto it = cur_begin; it != by_slowdown_time.end(); ++ it)
                max_time += (*it)->time_maximum;
            if (max_time > slowdown_below_layer_time) {
                if (m_cooling_logic_proportional)
                    extruder_range_slow_down_proportional(cur_begin, by_slowdown_time.end(), elapsed_time_total0, total, slowdown_below_layer_time);
                else
                    extruder_range_slow_down_non_proportional(cur_begin, by_slowdown_time.end(), slowdown_below_layer_time - total);
            } else {
                // Slow down to maximum possible.
                for (auto it = cur_begin; it != by_slowdown_time.end(); ++ it)
                    (*it)->slowdown_to_minimum_feedrate(true);
            }
        }
        elapsed_time_total0 += adj.elapsed_time_total();
    }
 
    return elapsed_time_total0;
}

References Slic3r::PerExtruderAdjustments::elapsed_time_total(), Slic3r::extruder_range_slow_down_non_proportional(), Slic3r::extruder_range_slow_down_proportional(), m_cooling_logic_proportional, Slic3r::PerExtruderAdjustments::slowdown_below_layer_time, and Slic3r::PerExtruderAdjustments::time_total.

Referenced by process_layer().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ operator=()

CoolingBuffer & Slic3r::CoolingBuffer::operator= ( const CoolingBuffer & )

privatedelete

◆ parse_layer_gcode()

std::vector< PerExtruderAdjustments > Slic3r::CoolingBuffer::parse_layer_gcode	(	const std::string &	gcode,
		std::vector< float > &	current_pos
	)		const

private

{
    std::vector<PerExtruderAdjustments> per_extruder_adjustments(m_extruder_ids.size());
    std::vector<size_t>                 map_extruder_to_per_extruder_adjustment(m_num_extruders, 0);
    for (size_t i = 0; i < m_extruder_ids.size(); ++ i) {
        PerExtruderAdjustments &adj         = per_extruder_adjustments[i];
        unsigned int            extruder_id = m_extruder_ids[i];
        adj.extruder_id               = extruder_id;
        adj.cooling_slow_down_enabled = m_config.cooling.get_at(extruder_id);
        adj.slowdown_below_layer_time = float(m_config.slowdown_below_layer_time.get_at(extruder_id));
        adj.min_print_speed           = float(m_config.min_print_speed.get_at(extruder_id));
        map_extruder_to_per_extruder_adjustment[extruder_id] = i;
    }
 
    unsigned int      current_extruder  = m_current_extruder;
    PerExtruderAdjustments *adjustment  = &per_extruder_adjustments[map_extruder_to_per_extruder_adjustment[current_extruder]];
    const char       *line_start = gcode.c_str();
    const char       *line_end   = line_start;
    const char        extrusion_axis = get_extrusion_axis(m_config)[0];
    // Index of an existing CoolingLine of the current adjustment, which holds the feedrate setting command
    // for a sequence of extrusion moves.
    size_t            active_speed_modifier = size_t(-1);
 
    std::vector<float> new_pos;
    for (; *line_start != 0; line_start = line_end) 
    {
        while (*line_end != '\n' && *line_end != 0)
            ++ line_end;
        // sline will not contain the trailing '\n'.
        std::string_view sline(line_start, line_end - line_start);
        // CoolingLine will contain the trailing '\n'.
        if (*line_end == '\n')
            ++ line_end;
        CoolingLine line(0, line_start - gcode.c_str(), line_end - gcode.c_str());
        if (boost::starts_with(sline, "G0 "))
            line.type = CoolingLine::TYPE_G0;
        else if (boost::starts_with(sline, "G1 "))
            line.type = CoolingLine::TYPE_G1;
        else if (boost::starts_with(sline, "G92 "))
            line.type = CoolingLine::TYPE_G92;
        if (line.type) {
            // G0, G1 or G92
            // Parse the G-code line.
            new_pos = current_pos;
            for (auto c = sline.begin() + 3;;) {
                // Skip whitespaces.
                for (; c != sline.end() && (*c == ' ' || *c == '\t'); ++ c);
                if (c == sline.end() || *c == ';')
                    break;
 
                // Parse the axis.
                size_t axis = (*c >= 'X' && *c <= 'Z') ? (*c - 'X') :
                              (*c == extrusion_axis) ? 3 : (*c == 'F') ? 4 : size_t(-1);
                if (axis != size_t(-1)) {
                    //auto [pend, ec] = 
                        fast_float::from_chars(&*(++ c), sline.data() + sline.size(), new_pos[axis]);
                    if (axis == 4) {
                        // Convert mm/min to mm/sec.
                        new_pos[4] /= 60.f;
                        if ((line.type & CoolingLine::TYPE_G92) == 0)
                            // This is G0 or G1 line and it sets the feedrate. This mark is used for reducing the duplicate F calls.
                            line.type |= CoolingLine::TYPE_HAS_F;
                    }
                }
                // Skip this word.
                for (; c != sline.end() && *c != ' ' && *c != '\t'; ++ c);
            }
            bool external_perimeter = boost::contains(sline, ";_EXTERNAL_PERIMETER");
            bool wipe               = boost::contains(sline, ";_WIPE");
            if (external_perimeter)
                line.type |= CoolingLine::TYPE_EXTERNAL_PERIMETER;
            if (wipe)
                line.type |= CoolingLine::TYPE_WIPE;
            if (boost::contains(sline, ";_EXTRUDE_SET_SPEED") && ! wipe) {
                line.type |= CoolingLine::TYPE_ADJUSTABLE;
                active_speed_modifier = adjustment->lines.size();
            }
            if ((line.type & CoolingLine::TYPE_G92) == 0) {
                // G0 or G1. Calculate the duration.
                if (m_config.use_relative_e_distances.value)
                    // Reset extruder accumulator.
                    current_pos[3] = 0.f;
                float dif[4];
                for (size_t i = 0; i < 4; ++ i)
                    dif[i] = new_pos[i] - current_pos[i];
                float dxy2 = dif[0] * dif[0] + dif[1] * dif[1];
                float dxyz2 = dxy2 + dif[2] * dif[2];
                if (dxyz2 > 0.f) {
                    // Movement in xyz, calculate time from the xyz Euclidian distance.
                    line.length = sqrt(dxyz2);
                } else if (std::abs(dif[3]) > 0.f) {
                    // Movement in the extruder axis.
                    line.length = std::abs(dif[3]);
                }
                line.feedrate = new_pos[4];
                assert((line.type & CoolingLine::TYPE_ADJUSTABLE) == 0 || line.feedrate > 0.f);
                if (line.length > 0) {
                    assert(line.feedrate > 0);
                    line.time = line.length / line.feedrate;
                    assert(line.time > 0);
                }
                line.time_max = line.time;
                if ((line.type & CoolingLine::TYPE_ADJUSTABLE) || active_speed_modifier != size_t(-1)) {
                    assert(adjustment->min_print_speed >= 0);
                    line.time_max = (adjustment->min_print_speed == 0.f) ? FLT_MAX : std::max(line.time, line.length / adjustment->min_print_speed);
                }
                if (active_speed_modifier < adjustment->lines.size() && (line.type & CoolingLine::TYPE_G1)) {
                    // Inside the ";_EXTRUDE_SET_SPEED" blocks, there must not be a G1 Fxx entry.
                    assert((line.type & CoolingLine::TYPE_HAS_F) == 0);
                    CoolingLine &sm = adjustment->lines[active_speed_modifier];
                    assert(sm.feedrate > 0.f);
                    sm.length   += line.length;
                    sm.time     += line.time;
                    if (sm.time_max != FLT_MAX) {
                        if (line.time_max == FLT_MAX)
                            sm.time_max = FLT_MAX;
                        else
                            sm.time_max += line.time_max;
                    }
                    // Don't store this line.
                    line.type = 0;
                }
            }
            current_pos = std::move(new_pos);
        } else if (boost::starts_with(sline, ";_EXTRUDE_END")) {
            // Closing a block of non-zero length extrusion moves.
            line.type = CoolingLine::TYPE_EXTRUDE_END;
            if (active_speed_modifier != size_t(-1)) {
                assert(active_speed_modifier < adjustment->lines.size());
                CoolingLine &sm = adjustment->lines[active_speed_modifier];
                // There should be at least some extrusion move inside the adjustment block.
                // However if the block has no extrusion (which is wrong), fix it for the cooling buffer to work.
                assert(sm.length > 0);
                assert(sm.time > 0);
                if (sm.time <= 0) {
                    // Likely a zero length extrusion, it should not be emitted, however the zero extrusions should not confuse firmware either.
                    // Prohibit time adjustment of a block of zero length extrusions by the cooling buffer.
                    sm.type &= ~CoolingLine::TYPE_ADJUSTABLE;
                    // But the start / end comment shall be removed.
                    sm.type |= CoolingLine::TYPE_ADJUSTABLE_EMPTY;
                }
            }
            active_speed_modifier = size_t(-1);
        } else if (boost::starts_with(sline, m_toolchange_prefix)) {
            unsigned int new_extruder = 0;
            auto res = std::from_chars(sline.data() + m_toolchange_prefix.size(), sline.data() + sline.size(), new_extruder);
            if (res.ec != std::errc::invalid_argument) {
                // Only change extruder in case the number is meaningful. User could provide an out-of-range index through custom gcodes - those shall be ignored.
                if (new_extruder < map_extruder_to_per_extruder_adjustment.size()) {
                    if (new_extruder != current_extruder) {
                        // Switch the tool.
                        line.type = CoolingLine::TYPE_SET_TOOL;
                        current_extruder = new_extruder;
                        adjustment         = &per_extruder_adjustments[map_extruder_to_per_extruder_adjustment[current_extruder]];
                    }
                }
                else {
                    // Only log the error in case of MM printer. Single extruder printers likely ignore any T anyway.
                    if (map_extruder_to_per_extruder_adjustment.size() > 1)
                        BOOST_LOG_TRIVIAL(error) << "CoolingBuffer encountered an invalid toolchange, maybe from a custom gcode: " << sline;
                }
            }
        } else if (boost::starts_with(sline, ";_BRIDGE_FAN_START")) {
            line.type = CoolingLine::TYPE_BRIDGE_FAN_START;
        } else if (boost::starts_with(sline, ";_BRIDGE_FAN_END")) {
            line.type = CoolingLine::TYPE_BRIDGE_FAN_END;
        } else if (boost::starts_with(sline, "G4 ")) {
            // Parse the wait time.
            line.type = CoolingLine::TYPE_G4;
            size_t pos_S = sline.find('S', 3);
            size_t pos_P = sline.find('P', 3);
            bool   has_S = pos_S > 0;
            bool   has_P = pos_P > 0;
            if (has_S || has_P) {
                //auto [pend, ec] = 
                    fast_float::from_chars(sline.data() + (has_S ? pos_S : pos_P) + 1, sline.data() + sline.size(), line.time);
                if (has_P)
                    line.time *= 0.001f;
            } else
                line.time = 0;
            line.time_max = line.time;
        } else if (boost::contains(sline, ";_SET_FAN_SPEED")) {
            auto speed_start = sline.find_last_of('D');
            int  speed       = 0;
            for (char num : sline.substr(speed_start + 1)) {
                speed = speed * 10 + (num - '0');
            }
            line.type = CoolingLine::TYPE_SET_FAN_SPEED;
            line.fan_speed = speed;
        } else if (boost::contains(sline, ";_RESET_FAN_SPEED")) {
            line.type = CoolingLine::TYPE_RESET_FAN_SPEED;
        }
 
        if (line.type != 0)
            adjustment->lines.emplace_back(std::move(line));
    }
 
    return per_extruder_adjustments;
}

Referenced by process_layer().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ process_layer() [1/2]

std::string Slic3r::CoolingBuffer::process_layer	(	const std::string &	gcode,
		size_t	layer_id,
		bool	flush
	)

inline

30 { return this->process_layer(std::string(gcode), layer_id, flush); }

Slic3r::CoolingBuffer::process_layer

std::string process_layer(std::string &&gcode, size_t layer_id, bool flush)

Definition CoolingBuffer.cpp:305

References process_layer().

Here is the call graph for this function:

◆ process_layer() [2/2]

std::string Slic3r::CoolingBuffer::process_layer	(	std::string &&	gcode,
		size_t	layer_id,
		bool	flush
	)

{
    // Cache the input G-code.
    if (m_gcode.empty())
        m_gcode = std::move(gcode);
    else
        m_gcode += gcode;
 
    std::string out;
    if (flush) {
        // This is either an object layer or the very last print layer. Calculate cool down over the collected support layers
        // and one object layer.
        std::vector<PerExtruderAdjustments> per_extruder_adjustments = this->parse_layer_gcode(m_gcode, m_current_pos);
        float layer_time_stretched = this->calculate_layer_slowdown(per_extruder_adjustments);
        out = this->apply_layer_cooldown(m_gcode, layer_id, layer_time_stretched, per_extruder_adjustments);
        m_gcode.clear();
    }
    return out;
}

References apply_layer_cooldown(), calculate_layer_slowdown(), m_current_pos, m_gcode, and parse_layer_gcode().

Referenced by process_layer().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ reset()

void Slic3r::CoolingBuffer::reset ( const Vec3d & position )

{
    m_current_pos.assign(5, 0.f);
    m_current_pos[0] = float(position.x());
    m_current_pos[1] = float(position.y());
    m_current_pos[2] = float(position.z());
    m_current_pos[4] = float(m_config.travel_speed.value);
    m_fan_speed = -1;
}