backend/libs/three/math/interpolants/DiscreteInterpolant.js

import { Interpolant } from '../Interpolant.js';

/**
 *
 * Interpolant that evaluates to the sample value at the position preceeding
 * the parameter.
 */

class DiscreteInterpolant extends Interpolant {
	constructor(parameterPositions, sampleValues, sampleSize, resultBuffer) {
		super(parameterPositions, sampleValues, sampleSize, resultBuffer);
	}

	interpolate_(i1 /*, t0, t, t1 */) {
		return this.copySampleValue_(i1 - 1);
	}
}

export { DiscreteInterpolant };