A chain of geometry effects makes at most 2 million anchors of a path (of a
type, symbol or image art's paths together) and about 8 million lines for the
renderer to draw at 1 px/pt, or what the path costs when that is more.
Roughen spaces its points further apart, Zig Zag makes fewer ridges a
segment, Free Distort, Twist and the warps split segments into longer pieces
(map_nonlinear_within) and Transform makes fewer copies where they would pass
it; a result drawn with too many lines is built again with fewer points, and
an effect that still doesn't fit is left out.
Three Roughens of a rectangle in a 25 KB file needed gigabytes of geometry,
and 2 million anchors of them flattened into 141 million lines (7 GB, past
vello's 2^27 lines a path); the file now opens in 0.4 s at about 450 MB.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
warp_point worked on box coordinates normalised to -1..1 on both axes:
Arc's radius was in x units but its edges were offset in y units, so a
box that isn't square bent into no circular arc (skewed sides from
Bend 10 %), and at 100 % the radius (2/π) was smaller than the
half-height, folding the inner edge over. warp_point now takes the
box's aspect along the warp; Arc keeps the centre line's length on a
circular arc in real proportions, with concentric edges, and an inner
edge that would pass the centre stops there. Other styles are as they
were; a square is bent as before.
Fixes#1578
