131 lines
5.0 KiB
C++
131 lines
5.0 KiB
C++
#include "../GCode.hpp"
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#include "CoolingBuffer.hpp"
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#include <boost/algorithm/string/predicate.hpp>
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#include <boost/algorithm/string/replace.hpp>
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#include <iostream>
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namespace Slic3r {
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std::string CoolingBuffer::append(const std::string &gcode, size_t object_id, size_t layer_id, bool is_support)
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{
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std::string out;
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size_t signature = object_id * 2 + (is_support ? 1 : 0);
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if (m_object_ids_visited.find(signature) != m_object_ids_visited.end())
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// For a single print_z, a combination of (object_id, is_support) could repeat once only.
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// If the combination of (object_id, is_support) reappears, this must be for another print_z,
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// therefore a layer has to be finalized.
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out = this->flush();
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m_object_ids_visited.insert(signature);
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m_layer_id = layer_id;
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m_gcode += gcode;
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// This is a very rough estimate of the print time,
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// not taking into account the acceleration curves generated by the printer firmware.
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m_elapsed_time += m_gcodegen.get_reset_elapsed_time();
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return out;
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}
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void apply_speed_factor(std::string &line, float speed_factor, float min_print_speed)
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{
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// find pos of F
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size_t pos = line.find_first_of('F');
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size_t last_pos = line.find_first_of(' ', pos+1);
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// extract current speed
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float speed;
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{
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std::istringstream iss(line.substr(pos+1, last_pos));
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iss >> speed;
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}
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// change speed
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speed *= speed_factor;
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speed = std::max(speed, min_print_speed);
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// replace speed in string
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{
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std::ostringstream oss;
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oss << speed;
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line.replace(pos+1, (last_pos-pos), oss.str());
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}
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}
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std::string CoolingBuffer::flush()
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{
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const FullPrintConfig &config = m_gcodegen.config();
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std::string gcode = m_gcode;
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float elapsed = m_elapsed_time;
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m_gcode.clear();
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m_elapsed_time = 0.;
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int fan_speed = config.fan_always_on ? config.min_fan_speed.value : 0;
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float speed_factor = 1.0;
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if (config.cooling) {
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#ifdef SLIC3R_DEBUG
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printf("Layer %zu estimated printing time: %f seconds\n", m_layer_id, elapsed);
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#endif
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if (elapsed < (float)config.slowdown_below_layer_time) {
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// Layer time very short. Enable the fan to a full throttle and slow down the print
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// (stretch the layer print time to slowdown_below_layer_time).
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fan_speed = config.max_fan_speed;
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speed_factor = elapsed / (float)config.slowdown_below_layer_time;
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} else if (elapsed < (float)config.fan_below_layer_time) {
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// Layer time quite short. Enable the fan proportionally according to the current layer time.
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fan_speed = config.max_fan_speed
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- (config.max_fan_speed - config.min_fan_speed)
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* (elapsed - (float)config.slowdown_below_layer_time)
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/ (config.fan_below_layer_time - config.slowdown_below_layer_time);
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}
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#ifdef SLIC3R_DEBUG
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printf(" fan = %d%%, speed = %f%%\n", fan_speed, speed_factor * 100);
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#endif
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if (speed_factor < 1.0) {
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// Adjust feed rate of G1 commands marked with an _EXTRUDE_SET_SPEED
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// as long as they are not _WIPE moves (they cannot if they are _EXTRUDE_SET_SPEED)
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// and they are not preceded directly by _BRIDGE_FAN_START (do not adjust bridging speed).
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std::string new_gcode;
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std::istringstream ss(gcode);
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std::string line;
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bool bridge_fan_start = false;
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float min_print_speed = float(config.min_print_speed * 60.);
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while (std::getline(ss, line)) {
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if (boost::starts_with(line, "G1")
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&& boost::contains(line, ";_EXTRUDE_SET_SPEED")
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&& !boost::contains(line, ";_WIPE")
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&& !bridge_fan_start) {
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apply_speed_factor(line, speed_factor, min_print_speed);
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boost::replace_first(line, ";_EXTRUDE_SET_SPEED", "");
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}
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bridge_fan_start = boost::contains(line, ";_BRIDGE_FAN_START");
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new_gcode += line + '\n';
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}
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gcode = new_gcode;
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}
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}
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if (m_layer_id < config.disable_fan_first_layers)
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fan_speed = 0;
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gcode = m_gcodegen.writer().set_fan(fan_speed) + gcode;
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// bridge fan speed
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if (!config.cooling || config.bridge_fan_speed == 0 || m_layer_id < config.disable_fan_first_layers) {
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boost::replace_all(gcode, ";_BRIDGE_FAN_START", "");
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boost::replace_all(gcode, ";_BRIDGE_FAN_END", "");
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} else {
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boost::replace_all(gcode, ";_BRIDGE_FAN_START", m_gcodegen.writer().set_fan(config.bridge_fan_speed, true));
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boost::replace_all(gcode, ";_BRIDGE_FAN_END", m_gcodegen.writer().set_fan(fan_speed, true));
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}
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boost::replace_all(gcode, ";_WIPE", "");
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boost::replace_all(gcode, ";_EXTRUDE_SET_SPEED", "");
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m_object_ids_visited.clear();
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return gcode;
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}
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}
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