LinearInterpolant.js•704 B
import { Interpolant } from '../Interpolant.js';
class LinearInterpolant extends Interpolant {
constructor( parameterPositions, sampleValues, sampleSize, resultBuffer ) {
super( parameterPositions, sampleValues, sampleSize, resultBuffer );
}
interpolate_( i1, t0, t, t1 ) {
const result = this.resultBuffer,
values = this.sampleValues,
stride = this.valueSize,
offset1 = i1 * stride,
offset0 = offset1 - stride,
weight1 = ( t - t0 ) / ( t1 - t0 ),
weight0 = 1 - weight1;
for ( let i = 0; i !== stride; ++ i ) {
result[ i ] =
values[ offset0 + i ] * weight0 +
values[ offset1 + i ] * weight1;
}
return result;
}
}
export { LinearInterpolant };