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FIX: find the first layer with enough space to extrude

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1. Sometimes the first layer is too small and does not have enough space to extrude.That will make first layer extruders empty

jira: STUDIO-13030

Signed-off-by: xun.zhang <xun.zhang@bambulab.com>
Change-Id: I69b99ab74101c772f4c91e955060e403988bb91c
(cherry picked from commit 9699397858c6d52d027e79e91041a9dac7280bba)
This commit is contained in:
xun.zhang 2025-07-02 14:54:07 +08:00 • committed by Noisyfox
parent e389072544
commit a092c48642
1 changed files with 40 additions and 4 deletions
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44
src/libslic3r/GCode/ToolOrdering.cpp
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@ -479,8 +479,26 @@ std::vector<unsigned int> ToolOrdering::generate_first_layer_tool_order(const Pr
std::map<int, double> min_areas_per_extruder;
for (auto object : print.objects()) {
auto first_layer = object->get_layer(0);
for (auto layerm : first_layer->regions()) {
const Layer* target_layer = nullptr;
for(auto layer : object->layers()){
for(auto layerm : layer->regions()){
for(auto& expoly : layerm->raw_slices){
if (!offset_ex(expoly, -0.2 * scale_(print.config().initial_layer_line_width)).empty()) {
target_layer = layer;
break;
}
}
if(target_layer)
break;
}
if(target_layer)
break;
}
if(!target_layer)
return tool_order;
for (auto layerm : target_layer->regions()) {
int extruder_id = layerm->region().config().option("wall_filament")->getInt();
for (auto expoly : layerm->raw_slices) {
@ -525,8 +543,26 @@ std::vector<unsigned int> ToolOrdering::generate_first_layer_tool_order(const Pr
std::vector<unsigned int> tool_order;
int initial_extruder_id = -1;
std::map<int, double> min_areas_per_extruder;
auto first_layer = object.get_layer(0);
for (auto layerm : first_layer->regions()) {
const Layer* target_layer = nullptr;
for(auto layer : object.layers()){
for(auto layerm : layer->regions()){
for(auto& expoly : layerm->raw_slices){
if (!offset_ex(expoly, -0.2 * scale_(object.config().line_width)).empty()) {
target_layer = layer;
break;
}
}
if(target_layer)
break;
}
if(target_layer)
break;
}
if(!target_layer)
return tool_order;
for (auto layerm : target_layer->regions()) {
int extruder_id = layerm->region().config().option("wall_filament")->getInt();
for (auto expoly : layerm->raw_slices) {
const double nozzle_diameter = object.print()->config().nozzle_diameter.get_at(0);