Function setArcPathInScript

packages/parsers/src/gsapParser.ts:2773–2860

(
  script: string,
  animationId: string,
  config: ArcPathConfig,
)

}

export function setArcPathInScript(
  script: string,
  animationId: string,
  config: ArcPathConfig,
): string {
  const loc = locateAnimation(script, animationId);
  if (!loc) return script;

  const varsArg = loc.target.call.varsArg;
  const anim = loc.target.animation;

  if (!config.enabled) {
    // Disable arc: restore x/y from motionPath's last waypoint, then remove motionPath
    const motionPathProp = varsArg.properties.find(
      (p: AstNode) => isObjectProperty(p) && propKeyName(p) === "motionPath",
    );
    if (motionPathProp) {
      const mpVal = motionPathProp.value;
      let pathArr: AstNode[] | undefined;
      if (mpVal?.type === "ObjectExpression") {
        const pathProp = mpVal.properties.find(
          (p: AstNode) => isObjectProperty(p) && propKeyName(p) === "path",
        );
        if (pathProp?.value?.type === "ArrayExpression") pathArr = pathProp.value.elements;
      }
      if (pathArr && pathArr.length > 0) {
        const last = pathArr[pathArr.length - 1];
        if (last?.type === "ObjectExpression") {
          for (const p of last.properties) {
            const k = propKeyName(p);
            if (k === "x" || k === "y") {
              const v = p.value?.value;
              if (typeof v === "number") setVarsKey(varsArg, k, v);
            }
          }
        }
      }
    }
    removeVarsKey(varsArg, "motionPath");
    return recast.print(loc.parsed.ast).code;
  }

  const waypoints = extractArcWaypoints(anim);
  if (waypoints.length < 2) return script;

  // Build segments — use provided segments or create defaults
  const segments: ArcPathSegment[] =
    config.segments.length === waypoints.length - 1
      ? config.segments
      : Array.from({ length: waypoints.length - 1 }, () => ({ curviness: 1 }));

  const motionPathCode = buildMotionPathObjectCode({
    waypoints,
    segments,
    autoRotate: config.autoRotate,
  });

  // Set motionPath on the vars