Double-clicking a brush in the Brushes panel (or the panel menu's Brush
Options…) opens its options. Calligraphic Brush Options: Angle,
Roundness and Size, each Fixed, Random or Pressure with its Variation,
over live previews of the nib and of a stroke. Bristle Brush Options:
Shape and the bristle sliders. OK runs brush.options; strokes painted
with the brush update.
The Paintbrush records the pen pressure along a stroke (path.freehand
takes [x, y, pressure] points), and a Calligraphic brush with Pressure
variation changes its nib along the stroke, from the value less the
variation at the lightest pressure to the value plus it at the heaviest.
Brushes saved before keep their Random variation. Pen pressure doesn't
reach the app on macOS yet (winit 0.30 reports none there).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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