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Size the prime tower from the actual flush volumes

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Prime towers reserved depth from the prime volume alone, ignoring the flush
matrix: rib-wall towers in both the engine and the preview, and rectangle and
cone towers in the preview, which never carried the flush-aware estimate the
engine already used. The preview also read the print preset, which does not
carry the printer- and filament-scope keys the estimate needs and so silently
fell back to defaults. On multi-nozzle printers the flush matrix, which holds
one block per nozzle, was additionally read as a single block. The tower could
come out too small for the purge it has to hold.

The flush-based estimate also skipped the height-based minimum depth that the
prime-volume one applies, so low-flush prints could estimate a tower shallower
than the one that actually gets built.
This commit is contained in:
SoftFever
2026-08-06 16:23:04 +08:00
parent f9ed5843c0
commit 32a4e0fb37
5 changed files with 83 additions and 41 deletions
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19
src/slic3r/GUI/PartPlate.cpp
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@@ -2262,6 +2262,12 @@ Vec3d PartPlate::estimate_wipe_tower_size(const DynamicPrintConfig & config, con
}
double volume = wipe_volume * (extruder_count == 2 ? plate_extruder_size : (plate_extruder_size - 1));
if (extruder_count == 2) volume += filament_change_volume * (int) (plate_extruder_size / 2);
// Read from the passed plate config — m_print may not have been applied yet
// (fresh plates, CLI), in which case its PrintConfig still holds defaults.
const auto *purge_opt = config.option<ConfigOptionBool>("purge_in_prime_tower");
const auto *semm_opt = config.option<ConfigOptionBool>("single_extruder_multi_material");
const bool semm_flush = purge_opt && purge_opt->value && semm_opt && semm_opt->value;
if (semm_flush) volume = WipeTower2::estimate_semm_flush_volume(config, plate_extruder_size);
if (use_rib_wall) {
depth = std::sqrt(volume / layer_height * extra_spacing);
if (need_wipe_tower || plate_extruder_size > 1) {
@@ -2274,7 +2280,9 @@ Vec3d PartPlate::estimate_wipe_tower_size(const DynamicPrintConfig & config, con
}
}
else {
depth = volume/ (layer_height * w) *extra_spacing;
depth = volume / (layer_height * w);
// The flush volumes already hold the spacing between wipes.
if (!semm_flush) depth *= extra_spacing;
if (need_wipe_tower || depth > EPSILON) {
float min_wipe_tower_depth = WipeTower::get_limit_depth_by_height(max_height);
depth = std::max((double)min_wipe_tower_depth, depth);
@@ -4380,22 +4388,21 @@ void PartPlateList::set_default_wipe_tower_pos_for_plate(int plate_idx, bool ini
f_volume_maps = wxGetApp().preset_bundle->get_default_nozzle_volume_types_for_filaments(filament_maps);
}
DynamicPrintConfig full_config = wxGetApp().preset_bundle->full_config(false, filament_maps, f_volume_maps);
const DynamicPrintConfig &print_cfg = wxGetApp().preset_bundle->prints.get_edited_preset().config;
float w = dynamic_cast<const ConfigOptionFloat *>(print_cfg.option("prime_tower_width"))->value;
float w = dynamic_cast<const ConfigOptionFloat *>(full_config.option("prime_tower_width"))->value;
float v = dynamic_cast<const ConfigOptionFloat *>(full_config.option("prime_volume"))->value;
bool enable_wrapping = false;
const ConfigOptionBool *wrapping_opt = dynamic_cast<const ConfigOptionBool *>(full_config.option("enable_wrapping_detection"));
if (wrapping_opt) enable_wrapping = wrapping_opt->value;
int nozzle_nums = wxGetApp().preset_bundle->get_printer_extruder_count();
Vec3d wipe_tower_size = part_plate->estimate_wipe_tower_size(print_cfg, w, v, nozzle_nums, init_pos ? 2 : 0, false, enable_wrapping);
Vec3d wipe_tower_size = part_plate->estimate_wipe_tower_size(full_config, w, v, nozzle_nums, init_pos ? 2 : 0, false, enable_wrapping);
if (!init_pos && (is_approx(wipe_tower_size(0), 0.0) || is_approx(wipe_tower_size(1), 0.0))) {
wipe_tower_size = part_plate->estimate_wipe_tower_size(print_cfg, w, v, nozzle_nums, 2, false, enable_wrapping);
wipe_tower_size = part_plate->estimate_wipe_tower_size(full_config, w, v, nozzle_nums, 2, false, enable_wrapping);
}
// Compute brim-aware margin: brim extends outward from tower position
float brim_width = 0.f;
const ConfigOptionFloat *brim_opt = print_cfg.option<ConfigOptionFloat>("prime_tower_brim_width");
const ConfigOptionFloat *brim_opt = full_config.option<ConfigOptionFloat>("prime_tower_brim_width");
if (brim_opt) {
brim_width = brim_opt->value;
if (brim_width < 0) brim_width = WipeTower::get_auto_brim_by_height((float) wipe_tower_size.z());