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Fixes for Wipe Tower Position Clamping

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Validation grows the estimated body by the brim before the tower is
generated, so a tower whose brim leaves the bed is rejected up front
instead of at export. The scene reload re-clamps the stored position,
since set_default_wipe_tower_pos_for_plate does not rerun when painting
changes the filament count. The rectangle-wall footprint polygon gets its
two missing brim corners (it was a skewed quad), so the post-generation
check covers the whole brim.
This commit is contained in:
Hanif Koh
2026-09-09 15:45:16 +08:00
committed by HanifKoh
parent e1efec7d6c
commit 98acd687f7
2 changed files with 22 additions and 11 deletions
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src/libslic3r/Print.cpp
+8 -9
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@@ -1046,6 +1046,7 @@ static StringObjectException layered_print_cleareance_valid(const Print &print,
const WipeTowerData &wipe_tower_estimate = print.wipe_tower_data(filaments_count);
float width = wipe_tower_estimate.width;
float depth = wipe_tower_estimate.depth;
float brim_width = wipe_tower_estimate.brim_width;
Polygons convex_hulls_temp;
if (print.has_wipe_tower()) {
@@ -1084,17 +1085,15 @@ static StringObjectException layered_print_cleareance_valid(const Print &print,
// No gate on "is there a tower": one that is not printed estimates to zero, so the hull
// is degenerate and every check passes. Re-deriving it here missed the wrapping-detection
// tower on a single-filament plate.
// Pre-generation only the body square is tested — the auto-brim estimate can overshoot
// the generated brim by several mm and must not hard-fail a print that physically fits.
// Post-generation the mesh bottom already includes the real brim, so the exact
// footprint is tested.
// The shared printable polygon is plate-local, while the tower polygons above are
// already shifted by the plate origin.
// Pre-generation, grow the body by the brim to match what the generator draws;
// post-generation the mesh already includes it.
Polygons printable_polys = print.get_extruder_shared_printable_polygon();
const Point plate_shift(scale_(plate_origin.x()), scale_(plate_origin.y()));
for (Polygon &p : printable_polys)
p.translate(plate_shift);
if (!diff(convex_hulls_temp, printable_polys).empty())
Polygons tower_polys_with_brim = print.is_step_done(psWipeTower) ?
convex_hulls_temp : offset(convex_hulls_temp, float(scale_(brim_width)));
if (!diff(tower_polys_with_brim, printable_polys).empty())
return {L("Prime Tower") + L(" is partially outside the printable area, and it cannot be printed.\n")};
return {};
}
@@ -5961,8 +5960,8 @@ void WipeTowerData::construct_mesh(float width, float depth, float height, float
wipe_tower_mesh_data->real_wipe_tower_mesh = make_cube(width, depth, height);
wipe_tower_mesh_data->real_brim_mesh = make_cube(width + 2 * brim_width, depth + 2 * brim_width, first_layer_height);
wipe_tower_mesh_data->real_brim_mesh.translate({-brim_width, -brim_width, 0});
wipe_tower_mesh_data->bottom = {scaled(Vec2f{-brim_width, -brim_width}), scaled(Vec2f{width + brim_width, 0}), scaled(Vec2f{width + brim_width, depth + brim_width}),
scaled(Vec2f{0, depth})};
wipe_tower_mesh_data->bottom = {scaled(Vec2f{-brim_width, -brim_width}), scaled(Vec2f{width + brim_width, -brim_width}),
scaled(Vec2f{width + brim_width, depth + brim_width}), scaled(Vec2f{-brim_width, depth + brim_width})};
} else {
wipe_tower_mesh_data->real_wipe_tower_mesh = WipeTower::its_make_rib_tower(width, depth, height, rib_length, rib_width, fillet_wall);
wipe_tower_mesh_data->bottom = WipeTower::rib_section(width, depth, rib_length, rib_width, fillet_wall);