1 files changed, 0 insertions, 375 deletions
diff --git a/apps/web/src/lib/animation/interpolation.ts b/apps/web/src/lib/animation/interpolation.ts
deleted file mode 100644
index 1a3c0fed..00000000
--- a/apps/web/src/lib/animation/interpolation.ts
+++ /dev/null
@@ -1,375 +0,0 @@
-import type {
-	AnimationChannel,
-	AnimationInterpolation,
-	AnimationValue,
-	DiscreteAnimationChannel,
-	DiscreteValue,
-	ScalarAnimationChannel,
-	ScalarAnimationKey,
-	ScalarSegmentType,
-} from "@/lib/animation/types";
-import { clamp } from "@/utils/math";
-import {
-	getBezierPoint,
-	getDefaultLeftHandle,
-	getDefaultRightHandle,
-	solveBezierProgressForTime,
-} from "./bezier";
-
-function byTimeAscending({
-	leftTime,
-	rightTime,
-}: {
-	leftTime: number;
-	rightTime: number;
-}): number {
-	return leftTime - rightTime;
-}
-
-function isWithinTimePair({
-	time,
-	leftTime,
-	rightTime,
-}: {
-	time: number;
-	leftTime: number;
-	rightTime: number;
-}): boolean {
-	return time >= leftTime && time <= rightTime;
-}
-
-function lerpNumber({
-	leftValue,
-	rightValue,
-	progress,
-}: {
-	leftValue: number;
-	rightValue: number;
-	progress: number;
-}): number {
-	return leftValue + (rightValue - leftValue) * progress;
-}
-
-function normalizeRightHandle({
-	handle,
-	leftKey,
-	rightKey,
-}: {
-	handle: ScalarAnimationKey["rightHandle"];
-	leftKey: ScalarAnimationKey;
-	rightKey: ScalarAnimationKey;
-}) {
-	if (!handle) {
-		return undefined;
-	}
-
-	const span = Math.max(1, rightKey.time - leftKey.time);
-	return {
-		dt: Math.min(span, Math.max(0, handle.dt)),
-		dv: handle.dv,
-	};
-}
-
-function normalizeLeftHandle({
-	handle,
-	leftKey,
-	rightKey,
-}: {
-	handle: ScalarAnimationKey["leftHandle"];
-	leftKey: ScalarAnimationKey;
-	rightKey: ScalarAnimationKey;
-}) {
-	if (!handle) {
-		return undefined;
-	}
-
-	const span = Math.max(1, rightKey.time - leftKey.time);
-	return {
-		dt: Math.max(-span, Math.min(0, handle.dt)),
-		dv: handle.dv,
-	};
-}
-
-function normalizeScalarKey({
-	key,
-}: {
-	key: ScalarAnimationKey;
-}): ScalarAnimationKey {
-	return {
-		...key,
-		tangentMode: key.tangentMode ?? "flat",
-		segmentToNext: key.segmentToNext ?? "linear",
-	};
-}
-
-function normalizeScalarChannel({
-	channel,
-}: {
-	channel: ScalarAnimationChannel;
-}): ScalarAnimationChannel {
-	const sortedKeys = [...channel.keys]
-		.map((key) => normalizeScalarKey({ key }))
-		.sort((leftKey, rightKey) =>
-			byTimeAscending({
-				leftTime: leftKey.time,
-				rightTime: rightKey.time,
-			}),
-		);
-	const nextKeys = sortedKeys.map((key, index) => {
-		const previousKey = sortedKeys[index - 1];
-		const nextKey = sortedKeys[index + 1];
-		return {
-			...key,
-			leftHandle:
-				previousKey != null
-					? normalizeLeftHandle({
-							handle: key.leftHandle,
-							leftKey: previousKey,
-							rightKey: key,
-						})
-					: undefined,
-			rightHandle:
-				nextKey != null
-					? normalizeRightHandle({
-							handle: key.rightHandle,
-							leftKey: key,
-							rightKey: nextKey,
-						})
-					: undefined,
-		};
-	});
-
-	return {
-		...channel,
-		keys: nextKeys,
-	};
-}
-
-export function normalizeChannel<TChannel extends AnimationChannel>({
-	channel,
-}: {
-	channel: TChannel;
-}): TChannel {
-	if (channel.kind === "scalar") {
-		return normalizeScalarChannel({
-			channel,
-		}) as TChannel;
-	}
-
-	return {
-		...channel,
-		keys: [...channel.keys].sort((leftKeyframe, rightKeyframe) =>
-			byTimeAscending({
-				leftTime: leftKeyframe.time,
-				rightTime: rightKeyframe.time,
-			}),
-		),
-	} as TChannel;
-}
-
-function extrapolateScalarEdge({
-	mode,
-	edgeKey,
-	neighborKey,
-	time,
-}: {
-	mode: "hold" | "linear";
-	edgeKey: ScalarAnimationKey;
-	neighborKey: ScalarAnimationKey | undefined;
-	time: number;
-}) {
-	if (mode === "hold" || !neighborKey) {
-		return edgeKey.value;
-	}
-
-	const span = neighborKey.time - edgeKey.time;
-	if (span === 0) {
-		return edgeKey.value;
-	}
-
-	return edgeKey.value + ((time - edgeKey.time) / span) * (neighborKey.value - edgeKey.value);
-}
-
-export function getScalarSegmentInterpolation({
-	segment,
-}: {
-	segment: ScalarSegmentType;
-}): AnimationInterpolation {
-	if (segment === "step") {
-		return "hold";
-	}
-
-	return segment === "bezier" ? "bezier" : "linear";
-}
-
-export function getScalarChannelValueAtTime({
-	channel,
-	time,
-	fallbackValue,
-}: {
-	channel: ScalarAnimationChannel | undefined;
-	time: number;
-	fallbackValue: number;
-}): number {
-	if (!channel || channel.keys.length === 0) {
-		return fallbackValue;
-	}
-
-	const normalizedChannel = normalizeChannel({
-		channel,
-	});
-	const firstKey = normalizedChannel.keys[0];
-	const lastKey = normalizedChannel.keys[normalizedChannel.keys.length - 1];
-	if (!firstKey || !lastKey) {
-		return fallbackValue;
-	}
-
-	if (time <= firstKey.time) {
-		if (time < firstKey.time) {
-			return extrapolateScalarEdge({
-				mode: normalizedChannel.extrapolation?.before ?? "hold",
-				edgeKey: firstKey,
-				neighborKey: normalizedChannel.keys[1],
-				time,
-			});
-		}
-
-		return firstKey.value;
-	}
-
-	if (time >= lastKey.time) {
-		if (time > lastKey.time) {
-			return extrapolateScalarEdge({
-				mode: normalizedChannel.extrapolation?.after ?? "hold",
-				edgeKey: lastKey,
-				neighborKey: normalizedChannel.keys[normalizedChannel.keys.length - 2],
-				time,
-			});
-		}
-
-		return lastKey.value;
-	}
-
-	for (
-		let keyIndex = 0;
-		keyIndex < normalizedChannel.keys.length - 1;
-		keyIndex++
-	) {
-		const leftKey = normalizedChannel.keys[keyIndex];
-		const rightKey = normalizedChannel.keys[keyIndex + 1];
-		if (time === rightKey.time) {
-			return rightKey.value;
-		}
-
-		if (
-			!isWithinTimePair({
-				time,
-				leftTime: leftKey.time,
-				rightTime: rightKey.time,
-			})
-		) {
-			continue;
-		}
-
-		if (leftKey.segmentToNext === "step") {
-			return leftKey.value;
-		}
-
-		const span = rightKey.time - leftKey.time;
-		if (span === 0) {
-			return rightKey.value;
-		}
-
-		const progress = clamp({
-			value: (time - leftKey.time) / span,
-			min: 0,
-			max: 1,
-		});
-		if (leftKey.segmentToNext === "linear") {
-			return lerpNumber({
-				leftValue: leftKey.value,
-				rightValue: rightKey.value,
-				progress,
-			});
-		}
-
-		const curveProgress = solveBezierProgressForTime({
-			time,
-			leftKey,
-			rightKey,
-		});
-		const rightHandle =
-			leftKey.rightHandle ?? getDefaultRightHandle({ leftKey, rightKey });
-		const leftHandle =
-			rightKey.leftHandle ?? getDefaultLeftHandle({ leftKey, rightKey });
-		return getBezierPoint({
-			progress: curveProgress,
-			p0: leftKey.value,
-			p1: leftKey.value + rightHandle.dv,
-			p2: rightKey.value + leftHandle.dv,
-			p3: rightKey.value,
-		});
-	}
-
-	return lastKey.value;
-}
-
-export function getDiscreteChannelValueAtTime({
-	channel,
-	time,
-	fallbackValue,
-}: {
-	channel: DiscreteAnimationChannel | undefined;
-	time: number;
-	fallbackValue: DiscreteValue;
-}): DiscreteValue {
-	if (!channel || channel.keys.length === 0) {
-		return fallbackValue;
-	}
-
-	const normalizedChannel = normalizeChannel({
-		channel,
-	});
-	let currentValue = fallbackValue;
-	for (const key of normalizedChannel.keys) {
-		if (time < key.time) {
-			break;
-		}
-		currentValue = key.value;
-	}
-	return currentValue;
-}
-
-export function getChannelValueAtTime({
-	channel,
-	time,
-	fallbackValue,
-}: {
-	channel: AnimationChannel | undefined;
-	time: number;
-	fallbackValue: AnimationValue;
-}): AnimationValue {
-	if (!channel || channel.keys.length === 0) {
-		return fallbackValue;
-	}
-
-	if (channel.kind === "scalar") {
-		return typeof fallbackValue === "number"
-			? getScalarChannelValueAtTime({
-					channel,
-					time,
-					fallbackValue,
-				})
-			: fallbackValue;
-	}
-
-	if (typeof fallbackValue !== "string" && typeof fallbackValue !== "boolean") {
-		return fallbackValue;
-	}
-
-	return getDiscreteChannelValueAtTime({
-		channel,
-		time,
-		fallbackValue,
-	});
-}