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ENH: refine filament sorting when flush volume is 0

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jira: NONE

Signed-off-by: xun.zhang <xun.zhang@bambulab.com>
Change-Id: Ia012cbd7a45a2fead94d2c579106115ea8edb5e8
This commit is contained in:
xun.zhang 2025-05-07 17:25:52 +08:00 committed by lane.wei
parent 9722fdbb7c
commit 6c1be5bddc
1 changed files with 21 additions and 2 deletions
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23
src/libslic3r/GCode/ToolOrderUtils.cpp
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@ -398,7 +398,8 @@ namespace Slic3r
int target_cost = std::numeric_limits<int>::max();
for (size_t k = 0; k < is_visited.size(); ++k) {
if (!is_visited[k]) {
if (wipe_volumes[*prev_filament][curr_layer_extruders[k]] < target_cost) {
if (wipe_volumes[*prev_filament][curr_layer_extruders[k]] < target_cost ||
(wipe_volumes[*prev_filament][curr_layer_extruders[k]] == target_cost && prev_filament == curr_layer_extruders[k])) {
target_idx = k;
target_cost = wipe_volumes[*prev_filament][curr_layer_extruders[k]];
}
@ -426,8 +427,24 @@ namespace Slic3r
std::sort(curr_layer_extruders.begin(), curr_layer_extruders.end());
std::sort(next_layer_extruders.begin(), next_layer_extruders.end());
float best_cost = std::numeric_limits<float>::max();
int best_change = std::numeric_limits<int>::max(); // add filament change check in case flush volume between different filament is 0
std::vector<unsigned int>best_seq;
auto get_filament_change_count = [](const std::vector<unsigned int>& curr_seq, const std::vector<unsigned int>& next_seq,const std::optional<unsigned int>& start_extruder_id) {
int count = 0;
auto prev_extruder_id = start_extruder_id;
for (auto seq : { curr_seq,next_seq }) {
for (auto eid : seq) {
if (prev_extruder_id && prev_extruder_id != eid) {
count += 1;
}
prev_extruder_id = eid;
}
}
return count;
};
do {
std::optional<unsigned int>prev_extruder_1 = start_extruder_id;
float curr_layer_cost = 0;
@ -441,6 +458,7 @@ namespace Slic3r
do {
std::optional<unsigned int>prev_extruder_2 = prev_extruder_1;
float total_cost = curr_layer_cost;
int total_change = get_filament_change_count(curr_layer_extruders, next_layer_extruders, start_extruder_id);
for (size_t idx = 0; idx < next_layer_extruders.size(); ++idx) {
if (prev_extruder_2)
@ -448,9 +466,10 @@ namespace Slic3r
prev_extruder_2 = next_layer_extruders[idx];
}
if (total_cost < best_cost) {
if (total_cost < best_cost || (total_cost == best_cost && total_change < best_change)) {
best_cost = total_cost;
best_seq = curr_layer_extruders;
best_change = total_change;
}
} while (std::next_permutation(next_layer_extruders.begin(), next_layer_extruders.end()));
} while (std::next_permutation(curr_layer_extruders.begin(), curr_layer_extruders.end()));