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WIP: Enhancement of the FDM back end to support Color Change situations,

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when a project was switched from multi-extruder printer to single
extruder printer.
This commit is contained in:
bubnikv 2020-01-16 13:39:03 +01:00
parent 8e5ba5ccc5
commit 1b354d8d3c
1 changed files with 9 additions and 3 deletions
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12
src/libslic3r/GCode/ToolOrdering.cpp
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@ -129,8 +129,12 @@ ToolOrdering::ToolOrdering(const Print &print, unsigned int first_extruder, bool
// Use the extruder switches from Model::custom_gcode_per_print_z to override the extruder to print the object. // Use the extruder switches from Model::custom_gcode_per_print_z to override the extruder to print the object.
// Do it only if all the objects were configured to be printed with a single extruder. // Do it only if all the objects were configured to be printed with a single extruder.
std::vector<std::pair<double, unsigned int>> per_layer_extruder_switches; std::vector<std::pair<double, unsigned int>> per_layer_extruder_switches;
if (print.object_extruders().size() == 1) if (auto num_extruders = unsigned(print.config().nozzle_diameter.size());
per_layer_extruder_switches = custom_tool_changes(print.model(), (unsigned int)print.config().nozzle_diameter.size()); num_extruders > 1 && print.object_extruders().size() == 1) {
// Printing a single extruder platter on a printer with more than 1 extruder (or single-extruder multi-material).
// There may be custom per-layer tool changes available at the model.
per_layer_extruder_switches = custom_tool_changes(print.model(), num_extruders);
}
// Collect extruders reuqired to print the layers. // Collect extruders reuqired to print the layers.
for (auto object : print.objects()) for (auto object : print.objects())
@ -470,6 +474,8 @@ void ToolOrdering::assign_custom_gcodes(const Print &print)
unsigned int num_extruders = *std::max_element(m_all_printing_extruders.begin(), m_all_printing_extruders.end()) + 1; unsigned int num_extruders = *std::max_element(m_all_printing_extruders.begin(), m_all_printing_extruders.end()) + 1;
std::vector<unsigned char> extruder_printing_above(num_extruders, false); std::vector<unsigned char> extruder_printing_above(num_extruders, false);
auto custom_gcode_it = custom_gcode_per_print_z.rbegin(); auto custom_gcode_it = custom_gcode_per_print_z.rbegin();
// If printing on a single extruder machine, make the tool changes trigger color change (M600) events.
bool tool_changes_as_color_changes = num_extruders == 1;
// From the last layer to the first one: // From the last layer to the first one:
for (auto it_lt = m_layer_tools.rbegin(); it_lt != m_layer_tools.rend(); ++ it_lt) { for (auto it_lt = m_layer_tools.rbegin(); it_lt != m_layer_tools.rend(); ++ it_lt) {
LayerTools &lt = *it_lt; LayerTools &lt = *it_lt;
@ -489,7 +495,7 @@ void ToolOrdering::assign_custom_gcodes(const Print &print)
print_z_below = it_lt_below->print_z; print_z_below = it_lt_below->print_z;
if (custom_gcode.print_z > print_z_below + 0.5 * EPSILON) { if (custom_gcode.print_z > print_z_below + 0.5 * EPSILON) {
// The custom G-code applies to the current layer. // The custom G-code applies to the current layer.
if (custom_gcode.gcode != ColorChangeCode || extruder_printing_above[unsigned(custom_gcode.extruder - 1)]) if (tool_changes_as_color_changes || custom_gcode.gcode != ColorChangeCode || extruder_printing_above[unsigned(custom_gcode.extruder - 1)])
// If it is color change, it will actually be useful as the exturder above will print. // If it is color change, it will actually be useful as the exturder above will print.
lt.custom_gcode = &custom_gcode; lt.custom_gcode = &custom_gcode;
// Consume that custom G-code event. // Consume that custom G-code event.