@numericelements/knot-sequence/dist/KnotSequenceAndUtilities/fromIncreasingOpentoIncreasingPeriodicKnotSequence.js

A library for generating and manipulating knot sequences for b-spline curves and surfaces

import { EM_KNOT_MULTIPLICITY_TOO_LARGE_FOR_CONVERSION } from '../ErrorMessages/KnotSequences.js';
import { ErrorLog } from '../errorProcessing/ErrorLoging.js';
import { IncreasingPeriodicKnotSequenceClosedCurve } from '../IncreasingPeriodicKnotSequenceClosedCurve.js';
import { INCREASINGPERIODICKNOTSEQUENCE } from '../KnotSequenceConstructorInterface.js';

function fromIncreasingOpentoIncreasingPeriodicKnotSequence(increasingSeq) {
    const maxMultOrder = increasingSeq.maxMultiplicityOrder;
    const indexOrigin = increasingSeq.indexKnotOrigin.knotIndex;
    const knotAbscissae = increasingSeq.allAbscissae;
    knotAbscissae.splice(knotAbscissae.length - 1 - (indexOrigin - 1), indexOrigin);
    knotAbscissae.splice(0, indexOrigin);
    if (increasingSeq.isSequenceUpToC0Discontinuity) {
        const multiplicities = increasingSeq.multiplicities();
        for (const multiplicity of multiplicities) {
            if (multiplicity === maxMultOrder) {
                const error = new ErrorLog("function", "fromIncreasingOpentoIncreasingPeriodicKnotSequence");
                error.addMessage(EM_KNOT_MULTIPLICITY_TOO_LARGE_FOR_CONVERSION);
                console.log(error.generateMessageString());
                throw new RangeError(error.generateMessageString());
            }
        }
    }
    return new IncreasingPeriodicKnotSequenceClosedCurve(maxMultOrder - 1, { type: INCREASINGPERIODICKNOTSEQUENCE, periodicKnots: knotAbscissae });
}

export { fromIncreasingOpentoIncreasingPeriodicKnotSequence };