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import type { MigrationResult, ProjectRecord } from "./types";
import { getProjectId, isRecord } from "./utils";
export function transformProjectV11ToV12({
project,
}: {
project: ProjectRecord;
}): MigrationResult<ProjectRecord> {
if (!getProjectId({ project })) {
return { project, skipped: true, reason: "no project id" };
}
if (typeof project.version === "number" && project.version >= 12) {
return { project, skipped: true, reason: "already v12" };
}
const migratedProject = migrateProjectPosition({ project });
return {
project: { ...migratedProject, version: 12 },
skipped: false,
};
}
function migrateProjectPosition({
project,
}: {
project: ProjectRecord;
}): ProjectRecord {
const scenesValue = project.scenes;
if (!Array.isArray(scenesValue)) return project;
const migratedScenes = scenesValue.map((scene) =>
migrateScenePosition({ scene }),
);
return { ...project, scenes: migratedScenes };
}
function migrateScenePosition({ scene }: { scene: unknown }): unknown {
if (!isRecord(scene)) return scene;
const tracksValue = scene.tracks;
if (!Array.isArray(tracksValue)) return scene;
const migratedTracks = tracksValue.map((track) =>
migrateTrackPosition({ track }),
);
return { ...scene, tracks: migratedTracks };
}
function migrateTrackPosition({ track }: { track: unknown }): unknown {
if (!isRecord(track)) return track;
const elementsValue = track.elements;
if (!Array.isArray(elementsValue)) return track;
const migratedElements = elementsValue.map((element) =>
migrateElementPosition({ element }),
);
return { ...track, elements: migratedElements };
}
function migrateElementPosition({ element }: { element: unknown }): unknown {
if (!isRecord(element)) return element;
const animations = element.animations;
if (!isRecord(animations) || !isRecord(animations.channels)) return element;
const channels = animations.channels as Record<string, unknown>;
const xChannel = channels["transform.position.x"];
const yChannel = channels["transform.position.y"];
if (!xChannel && !yChannel) return element;
const baseTransform = isRecord(element.transform) ? element.transform : {};
const basePosition = isRecord(baseTransform.position)
? baseTransform.position
: {};
const baseX = typeof basePosition.x === "number" ? basePosition.x : 0;
const baseY = typeof basePosition.y === "number" ? basePosition.y : 0;
const xKeyframes = getKeyframes({ channel: xChannel });
const yKeyframes = getKeyframes({ channel: yChannel });
const allTimes = Array.from(
new Set([
...xKeyframes.map((kf) => kf.time),
...yKeyframes.map((kf) => kf.time),
]),
).sort((a, b) => a - b);
const vectorKeyframes = allTimes.map((time) => {
const xKf = xKeyframes.find((kf) => Math.abs(kf.time - time) < 0.001);
const yKf = yKeyframes.find((kf) => Math.abs(kf.time - time) < 0.001);
const x =
typeof xKf?.value === "number"
? xKf.value
: interpolateScalarAtTime({
keyframes: xKeyframes,
time,
fallback: baseX,
});
const y =
typeof yKf?.value === "number"
? yKf.value
: interpolateScalarAtTime({
keyframes: yKeyframes,
time,
fallback: baseY,
});
const interpolation = xKf?.interpolation ?? yKf?.interpolation ?? "linear";
return {
id: xKf?.id ?? yKf?.id ?? crypto.randomUUID(),
time,
value: { x, y },
interpolation,
};
});
const newChannels = { ...channels };
delete newChannels["transform.position.x"];
delete newChannels["transform.position.y"];
newChannels["transform.position"] = {
valueKind: "vector",
keyframes: vectorKeyframes,
};
return {
...element,
animations: { ...animations, channels: newChannels },
};
}
interface ScalarKeyframe {
id: string;
time: number;
value: number;
interpolation: string;
}
function getKeyframes({ channel }: { channel: unknown }): ScalarKeyframe[] {
if (!isRecord(channel)) return [];
if (!Array.isArray(channel.keyframes)) return [];
return channel.keyframes.flatMap((kf) => {
if (!isRecord(kf)) return [];
if (
typeof kf.id !== "string" ||
typeof kf.time !== "number" ||
typeof kf.value !== "number"
)
return [];
return [
{
id: kf.id,
time: kf.time,
value: kf.value,
interpolation:
typeof kf.interpolation === "string" ? kf.interpolation : "linear",
},
];
});
}
function interpolateScalarAtTime({
keyframes,
time,
fallback,
}: {
keyframes: ScalarKeyframe[];
time: number;
fallback: number;
}): number {
if (keyframes.length === 0) return fallback;
const sorted = [...keyframes].sort((a, b) => a.time - b.time);
const first = sorted[0];
const last = sorted[sorted.length - 1];
if (!first || !last) return fallback;
if (time <= first.time) return first.value;
if (time >= last.time) return last.value;
for (let i = 0; i < sorted.length - 1; i++) {
const left = sorted[i];
const right = sorted[i + 1];
if (time < left.time || time > right.time) continue;
if (left.interpolation === "hold") return left.value;
const t = (time - left.time) / (right.time - left.time);
return left.value + (right.value - left.value) * t;
}
return last.value;
}
|
