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import { TIME_EPSILON_SECONDS } from "@/constants/animation-constants";
import type {
AnimationPath,
ElementAnimations,
ElementKeyframe,
} from "@/lib/animation/types";
import { isAnimationPath } from "./target-resolver";
export function getElementKeyframes({
animations,
}: {
animations: ElementAnimations | undefined;
}): ElementKeyframe[] {
if (!animations) {
return [];
}
return Object.entries(animations.channels).flatMap(
([propertyPath, channel]) => {
if (
!channel ||
channel.keyframes.length === 0 ||
!isAnimationPath(propertyPath)
) {
return [];
}
return channel.keyframes.map((keyframe) => ({
propertyPath,
id: keyframe.id,
time: keyframe.time,
value: keyframe.value,
interpolation: keyframe.interpolation,
}));
},
);
}
export function hasKeyframesForPath({
animations,
propertyPath,
}: {
animations: ElementAnimations | undefined;
propertyPath: AnimationPath;
}): boolean {
const channel = animations?.channels[propertyPath];
return Boolean(channel && channel.keyframes.length > 0);
}
export function getKeyframeAtTime({
animations,
propertyPath,
time,
}: {
animations: ElementAnimations | undefined;
propertyPath: AnimationPath;
time: number;
}): ElementKeyframe | null {
const channel = animations?.channels[propertyPath];
if (!channel || channel.keyframes.length === 0) return null;
const keyframe = channel.keyframes.find(
(keyframe) => Math.abs(keyframe.time - time) <= TIME_EPSILON_SECONDS,
);
if (!keyframe) return null;
return {
propertyPath,
id: keyframe.id,
time: keyframe.time,
value: keyframe.value,
interpolation: keyframe.interpolation,
};
}
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