Function printCompositionTweens

packages/cli/src/commands/keyframes.ts:794–802

(cmp: SurfacedComposition)

// Print tweens not already shown as part of a trace (a drawn stroke, or its
// internal pen-up jump).
function printCompositionTweens(cmp: SurfacedComposition): void {
  const tracedIds = new Set(cmp.traces.flatMap((tr) => tr.strokes.map((s) => s.id)));
  const tracedTargets = new Set(cmp.traces.map((tr) => tr.target));
  for (const t of cmp.tweens) {
    if (tracedIds.has(t.id)) continue; // already shown as part of its trace
    if (t.method === "set" && tracedTargets.has(t.target)) continue; // internal pen-up jump
    printTween(t);
  }
}

// Print one composition's traces + tweens (skipping strokes already shown in a trace).
function printComposition(cmp: SurfacedComposition): void {