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Fix #147195: Grease Pencil: Draw tool implement subdivisions

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This implements brush subdivisions as a post processing step.

This was simply never implemented.

Pull Request: https://projects.blender.org/blender/blender/pulls/159380
This commit is contained in:
Casey Bianco-Davis 2026-06-02 19:31:33 +02:00 • committed by Falk David
parent 60dbeb4abb
commit e5a91bf45e
2 changed files with 21 additions and 0 deletions
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1
scripts/startup/bl_ui/space_view3d_toolbar.py
View file

@ -2026,6 +2026,7 @@ class VIEW3D_PT_tools_grease_pencil_v3_brush_post_processing(View3DPanel, Panel)
col1 = col.column(align=True)
col1.prop(gp_settings, "pen_subdivision_steps", text="Subdivisions")
col1.active = gp_settings.simplify_pixel_threshold == 0
col1 = col.column(align=True)
col1.prop(gp_settings, "simplify_pixel_threshold", slider=True)

20
source/blender/editors/sculpt_paint/grease_pencil/paint.cc
View file

@ -45,6 +45,7 @@
#include "GEO_set_curve_type.hh"
#include "GEO_simplify_curves.hh"
#include "GEO_smooth_curves.hh"
#include "GEO_subdivide_curves.hh"
#include "WM_api.hh"
#include "WM_types.hh"
@ -1327,6 +1328,22 @@ static void smooth_stroke(bke::greasepencil::Drawing &drawing,
}
}
static void subdivide_stroke(bke::greasepencil::Drawing &drawing,
const float subdivisions,
const int active_curve)
{
bke::CurvesGeometry &curves = drawing.strokes_for_write();
const IndexRange stroke = IndexRange::from_single(active_curve);
const OffsetIndices<int> points_by_curve = curves.points_by_curve();
Array<int> use_cuts(curves.points_num(), 0);
use_cuts.as_mutable_span().slice(points_by_curve[active_curve]).fill(subdivisions);
const VArray<int> cuts = VArray<int>::from_span(use_cuts.as_span());
curves = geometry::subdivide_curves(curves, stroke, cuts);
}
static void simplify_stroke(bke::greasepencil::Drawing &drawing,
const float epsilon,
const int active_curve)
@ -1733,6 +1750,9 @@ void PaintOperation::on_stroke_done(const bContext &C)
trim_end_points(drawing, 1e-5f, on_back, active_curve);
if (do_post_processing) {
if (settings->draw_subdivide > 0 && settings->simplify_px == 0.0f) {
subdivide_stroke(drawing, settings->draw_subdivide, active_curve);
}
if (settings->draw_smoothfac > 0.0f && settings->draw_smoothlvl > 0) {
smooth_stroke(drawing, settings->draw_smoothfac, settings->draw_smoothlvl, active_curve);
}