three.fbo-helper
Version:
FrameBuffer Object inspector for three.js
48 lines (29 loc) • 849 B
JavaScript
import { Interpolant } from '../Interpolant';
/**
* @author tschw
*/
function LinearInterpolant(
parameterPositions, sampleValues, sampleSize, resultBuffer ) {
Interpolant.call(
this, parameterPositions, sampleValues, sampleSize, resultBuffer );
}
LinearInterpolant.prototype =
Object.assign( Object.create( Interpolant.prototype ), {
constructor: LinearInterpolant,
interpolate_: function( i1, t0, t, t1 ) {
var result = this.resultBuffer,
values = this.sampleValues,
stride = this.valueSize,
offset1 = i1 * stride,
offset0 = offset1 - stride,
weight1 = ( t - t0 ) / ( t1 - t0 ),
weight0 = 1 - weight1;
for ( var i = 0; i !== stride; ++ i ) {
result[ i ] =
values[ offset0 + i ] * weight0 +
values[ offset1 + i ] * weight1;
}
return result;
}
} );
export { LinearInterpolant };