internal static Snap.NX.Spline CreateSplineThroughPoints(Snap.Position[] qpts, Vector startTangent, Vector endTangent)
{
Tag tag;
int length = qpts.Length;
int[] numArray = new int[length];
int[] numArray2 = new int[length];
double[] numArray3 = new double[3 * length];
double[] numArray4 = new double[3 * length];
for (int i = 0; i < length; i++)
{
numArray[i] = -1;
numArray2[i] = -1;
numArray3[i] = 0.0;
numArray3[i + 1] = 0.0;
numArray3[i + 2] = 0.0;
numArray4[i] = 0.0;
numArray4[i + 1] = 0.0;
numArray4[i + 2] = 0.0;
}
numArray3[0] = startTangent.X;
numArray3[(3 * length) - 3] = endTangent.X;
numArray3[1] = startTangent.Y;
numArray3[(3 * length) - 2] = endTangent.Y;
numArray3[2] = startTangent.Z;
numArray3[(3 * length) - 1] = endTangent.Z;
numArray[0] = 1;
numArray[length - 1] = 1;
UFCurve.PtSlopeCrvatr[] crvatrArray = new UFCurve.PtSlopeCrvatr[length];
for (int j = 0; j < length; j++)
{
crvatrArray[j] = new UFCurve.PtSlopeCrvatr();
crvatrArray[j].point = new double[] { qpts[j].X, qpts[j].Y, qpts[j].Z };
crvatrArray[j].slope_type = numArray[j];
crvatrArray[j].slope = new double[] { numArray3[3 * j], numArray3[(3 * j) + 1], numArray3[(3 * j) + 2] };
crvatrArray[j].crvatr_type = numArray2[j];
crvatrArray[j].crvatr = new double[] { numArray4[3 * j], numArray4[(3 * j) + 1], numArray4[(3 * j) + 2] };
}
int num4 = 1;
double[] parameters = null;
int periodicity = 0;
UFSession uFSession = Globals.UFSession;
uFSession.Curve.CreateSplineThruPts(3, periodicity, length, crvatrArray, parameters, num4, out tag);
uFSession.So.SetVisibilityOption(tag, UFSo.VisibilityOption.Visible);
return(new Snap.NX.Spline(tag));
}
public const int UF_CURVE_CRVATR_VEC = 2; /* UF_CURVE_CREATE_SPLINE_THRU_PTS */
public int Execute()
{
Tag UFPart;
string part_name = "EX_Curve_CreateSplineThruPts";
int units = 2;
string name;
theUfSession.Part.New(part_name, units, out UFPart);
theUfSession.Part.AskPartName(UFPart, out name);
w.WriteLine("Loaded: " + name);
/* B-spline parameters */
int degree = 3;
int periodicity = 0;
int num_points = NUMBER_POINTS;
/* Point/slope UFCurve attribute array */
UFCurve.PtSlopeCrvatr[] point_data = new UFCurve.PtSlopeCrvatr[NUMBER_POINTS];
/* Arrays of user's defining point data */
double[] parameters = { 0.00, 0.17, 0.32, 0.45, 1.29 };
double[] points = { 1.1000, 0.5320, 2.0000,
1.5240, 0.6789, 2.3000,
2.0000, 0.9000, 3.5956,
2.3456, 1.3456, 3.7890,
3.1000, 2.4567, 3.3214 };
int[] slopeTypes = { UF_CURVE_SLOPE_DIR,
UF_CURVE_SLOPE_AUTO,
UF_CURVE_SLOPE_NONE,
UF_CURVE_SLOPE_DIR,
UF_CURVE_SLOPE_VEC };
double[] slopeVecs = { 1.2300, 5.0506, 4.0360,
0.0000, 0.0000, 0.0000,
0.0000, 0.0000, 0.0000,
0.5000, 1.0000, 0.5000,
1.0000, -2.0000, 1.0000 };
int[] crvatrTypes = { UF_CURVE_CRVATR_NONE,
UF_CURVE_CRVATR_AUTO_DIR,
UF_CURVE_CRVATR_NONE,
UF_CURVE_CRVATR_VEC,
UF_CURVE_CRVATR_VEC };
double[] crvatrVecs = { 0.0000, 0.0000, 0.0000,
1.0000, 2.5780, 5.6700,
0.0000, 0.0000, 0.0000,
1.0000, -1.0000, 1.0000,
-1.0000, -1.0000, -1.0000 };
int i, save_def_data = 1;
Tag spline_tag;
for (i = 0; i < NUMBER_POINTS; i++)
{
point_data[i].point = new double[3];
point_data[i].point[0] = points[3 * i];
point_data[i].point[1] = points[3 * i + 1];
point_data[i].point[2] = points[3 * i + 2];
point_data[i].slope_type = slopeTypes[i];
point_data[i].slope = new double[3];
point_data[i].slope[0] = slopeVecs[3 * i];
point_data[i].slope[1] = slopeVecs[3 * i + 1];
point_data[i].slope[2] = slopeVecs[3 * i + 2];
point_data[i].crvatr_type = crvatrTypes[i];
point_data[i].crvatr = new double[3];
point_data[i].crvatr[0] = crvatrVecs[3 * i];
point_data[i].crvatr[1] = crvatrVecs[3 * i + 1];
point_data[i].crvatr[2] = crvatrVecs[3 * i + 2];
}
/* Create B-spline UFCurve */
theUfSession.Curve.CreateSplineThruPts(degree,
periodicity,
num_points,
point_data,
parameters,
save_def_data,
out spline_tag);
theUfSession.Part.Save();
return(0);
}