The filled sparklines and the market price chart built their area fill
with PathFillConcave, which runs a per-scanline pass over the whole
filled region. For a simple area under an x-monotone curve that work is
unnecessary.
- A new helper fills the area between an x-monotone polyline and a
horizontal baseline directly as a triangle strip, in one pass over the
points. The market sparklines, the market price chart and the mining
hashrate sparkline all use it. The fill is flat and non-anti-aliased;
the anti-aliased curve drawn on top hides the stepped top edge, and
the faint side and bottom edges are imperceptible at these alphas.
Tests: the strip's vertex and index counts, index bounds, and that its
triangle area matches the trapezoid area under the polyline.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
DanSandClaude Opus 4.8
c5b325a752