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24 lines
768 B
24 lines
768 B
import type { GenericAnimation } from '../animation';
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import type { DisplayObject } from '../shapes';
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import type { Interpolatable } from './interpolate';
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import { interpolate } from './interpolate';
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export function keyframeInterpolate<T extends Interpolatable>(
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element: DisplayObject,
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from: T,
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to: T,
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options: GenericAnimation
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) {
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if (!options) {
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element.attr('__keyframe_data__', to);
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return null;
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}
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const { duration = 0 } = options;
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const int = interpolate(from, to);
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const count = Math.ceil(+duration / 16);
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const keyframes = new Array(count)
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.fill(0)
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.map((datum, index, array) => ({ __keyframe_data__: int(index / (array.length - 1)) }));
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// @ts-ignore
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return element.animate(keyframes, { fill: 'both', ...options });
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}
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