# Trace vectors v6 — Rainbow curves

Two words bridge top to bottom through a curtain of violet strands that flares into rainbow each time a slow horizontal line finishes sweeping the frame.

Source: https://steevepommier.com/motion/trace-vectors-v6-rainbow-curves/
Section: Motion
Published: 2026-07-07
Tags: 3d, typography, iridescent

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A dotted word sits at the top of the frame and another at the bottom, with a
curtain of strands pouring between them in folds; a thin horizontal accent line
rides slowly down the canvas.

The strands thread each outline sample point through twenty intermediate stages
of the word-to-word morph, swayed sideways by an eased schedule that folds the
curtain. The travelling line is a single eased scalar, and the same scalar
selects the palette: until it completes its pass the whole curtain holds a flat
violet, then the cycling rainbow snaps on — colour arrives as an event rather
than a gradient.