RE: [C++ V8i] Replicating the Facet Curve - Equal Chord Length method

Hello Muary,

I use the below test code can reproduce what Mstn tool does.

extern "C" int mdlBspline_computeEqualChordByNumber
(
Dpoint3d *pointsP, /* <= chord points with length of numSeg+1 */
double *paramsP, /* <= paramsters for equal chord length */
MSBsplineCurve *curveP, /* => input B-spline curve */
int numSeg, /* => number of required chords */
double convergeTol /* => tolerance checking if chords are same length */
);
void Test()
    {
    MSElementDescrP edP = NULL;
    MSBsplineCurve  bsCurve;
    DPoint3d        *pPts = NULL;
    double          *pU = NULL;
    int             numSeg = 5;

    memset(&bsCurve, 0, sizeof(MSBsplineCurve));
    mdlAssoc_getElementDescr(&edP, NULL, 510, ACTIVEMODEL, FALSE);

    pPts = (DPoint3d*)dlmSystem_mdlMalloc((numSeg+1) * sizeof(DPoint3d));
    pU = (double *)dlmSystem_mdlMalloc((numSeg + 1) * sizeof(double));
    mdlBspline_convertToCurve(&bsCurve, edP);
    mdlBspline_computeEqualChordByNumber(pPts, pU, &bsCurve, numSeg, 1.0);
    mdlBspline_freeCurve(&bsCurve);
    mdlElmdscr_freeAll(&edP);

    mdlLineString_create(dgnBuf, NULL, pPts, numSeg+1);
    mdlElement_add(dgnBuf);

    dlmSystem_mdlFree(pPts);
    dlmSystem_mdlFree(pU);
    }