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Fix #143420: Grease Pencil: Handle empty result in dash modifier

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The dash modifier creates final result by combining filtered/processed
and unfiltered strokes, but this result could be empty. The code assumes
valid joined geometry when it's sometimes not the case. This patch did
a null check and it worked as it should.

Pull Request: https://projects.blender.org/blender/blender/pulls/143424
This commit is contained in:
YimingWu 2025-07-28 13:38:08 +02:00 • committed by YimingWu
parent fa007002b1
commit 272178d001
1 changed files with 6 additions and 1 deletions
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7
source/blender/modifiers/intern/MOD_grease_pencil_dash.cc
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@ -358,7 +358,12 @@ static void modify_drawing(const GreasePencilDashModifierData &dmd,
bke::GeometrySet unselected_geo = bke::GeometrySet::from_curves(unselected_curves_id);
bke::GeometrySet joined_geo = geometry::join_geometries({unselected_geo, masked_geo}, {});
drawing.strokes_for_write() = std::move(joined_geo.get_curves_for_write()->geometry.wrap());
if (joined_geo.has_curves()) {
drawing.strokes_for_write() = {};
}
else {
drawing.strokes_for_write() = std::move(joined_geo.get_curves_for_write()->geometry.wrap());
}
drawing.tag_topology_changed();
}