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import type {
AnimationPath,
ElementAnimations,
ScalarAnimationChannel,
ScalarGraphChannel,
ScalarGraphKeyframeContext,
} from "@/lib/animation/types";
function isScalarAnimationChannel(
channel: ElementAnimations["channels"][string],
): channel is ScalarAnimationChannel {
return channel?.kind === "scalar";
}
export function getEditableScalarChannels({
animations,
propertyPath,
}: {
animations: ElementAnimations | undefined;
propertyPath: AnimationPath;
}): ScalarGraphChannel[] {
const binding = animations?.bindings[propertyPath];
if (!binding) {
return [];
}
return binding.components.flatMap((component) => {
const channel = animations?.channels[component.channelId];
if (!isScalarAnimationChannel(channel)) {
return [];
}
return [
{
propertyPath,
componentKey: component.key,
channelId: component.channelId,
channel,
},
];
});
}
export function getEditableScalarChannel({
animations,
propertyPath,
componentKey,
}: {
animations: ElementAnimations | undefined;
propertyPath: AnimationPath;
componentKey: string;
}): ScalarGraphChannel | null {
return (
getEditableScalarChannels({
animations,
propertyPath,
}).find((channel) => channel.componentKey === componentKey) ?? null
);
}
export function getScalarKeyframeContext({
animations,
propertyPath,
componentKey,
keyframeId,
}: {
animations: ElementAnimations | undefined;
propertyPath: AnimationPath;
componentKey: string;
keyframeId: string;
}): ScalarGraphKeyframeContext | null {
const scalarChannel = getEditableScalarChannel({
animations,
propertyPath,
componentKey,
});
if (!scalarChannel) {
return null;
}
const keyframeIndex = scalarChannel.channel.keys.findIndex(
(keyframe) => keyframe.id === keyframeId,
);
if (keyframeIndex < 0) {
return null;
}
return {
...scalarChannel,
keyframe: scalarChannel.channel.keys[keyframeIndex],
keyframeIndex,
previousKey: scalarChannel.channel.keys[keyframeIndex - 1] ?? null,
nextKey: scalarChannel.channel.keys[keyframeIndex + 1] ?? null,
};
}
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