public static void CurveAndBsplineCurve(string unparsed)
{
Application app = Utilities.ComApp;
Point3d[] pntArray = new Point3d[5];
pntArray[0] = app.Point3dFromXY(0, -19);
pntArray[1] = app.Point3dFromXY(1, -17);
pntArray[2] = app.Point3dFromXY(2, -19);
pntArray[3] = app.Point3dFromXY(3, -17);
pntArray[4] = app.Point3dFromXY(4, -19);
CurveElement oCurve = app.CreateCurveElement1(null, ref pntArray);
oCurve.Color = 0;
oCurve.LineWeight = 2;
app.ActiveModelReference.AddElement(oCurve);
for (int i = 0; i < 5; i++)
{
pntArray[i].X += 5;
}
InterpolationCurve oInterpolationCurve = new InterpolationCurveClass();
oInterpolationCurve.SetFitPoints(pntArray);
BsplineCurveElement oBsplineCurve = app.CreateBsplineCurveElement2(null, oInterpolationCurve);
oBsplineCurve.Color = 1;
oBsplineCurve.LineWeight = 2;
app.ActiveModelReference.AddElement(oBsplineCurve);
}
public static void ConeAndBsplineSurface()
{
Application app = Utilities.ComApp;
Point3d basePt = app.Point3dFromXYZ(2, -23, 0);
Point3d topPt = app.Point3dFromXYZ(2, -20, 0);
Matrix3d rMatrix = app.Matrix3dFromAxisAndRotationAngle(0, app.Pi() / 6);
ConeElement oCone = app.CreateConeElement1(null, 2, ref basePt, 1, ref topPt, ref rMatrix);
oCone.Color = 0;
app.ActiveModelReference.AddElement(oCone);
Point3d[] aFitPnts = new Point3d[4];
InterpolationCurve oFitCurve = new InterpolationCurveClass();
BsplineCurve[] aCurves = new BsplineCurve[3];
aFitPnts[0] = app.Point3dFromXYZ(5.9, -21, -0.5);
aFitPnts[1] = app.Point3dFromXYZ(6.9, -20, 1);
aFitPnts[2] = app.Point3dFromXYZ(7.9, -20.3, 1.3);
aFitPnts[3] = app.Point3dFromXYZ(8.9, -20.8, 0.3);
oFitCurve.SetFitPoints(ref aFitPnts);
oFitCurve.BesselTangents = true;
aCurves[0] = new BsplineCurveClass();
aCurves[0].FromInterpolationCurve(oFitCurve);
aFitPnts[0] = app.Point3dFromXYZ(6.4, -22, 0);
aFitPnts[1] = app.Point3dFromXYZ(7.1, -21.2, 0.7);
aFitPnts[2] = app.Point3dFromXYZ(7.7, -21, 1);
aFitPnts[3] = app.Point3dFromXYZ(8.4, -21.7, -0.2);
oFitCurve.SetFitPoints(ref aFitPnts);
oFitCurve.BesselTangents = true;
aCurves[1] = new BsplineCurveClass();
aCurves[1].FromInterpolationCurve(oFitCurve);
aFitPnts[0] = app.Point3dFromXYZ(5.9, -23, 0);
aFitPnts[1] = app.Point3dFromXYZ(7.2, -23.1, 1.2);
aFitPnts[2] = app.Point3dFromXYZ(7.8, -23.3, 0.8);
aFitPnts[3] = app.Point3dFromXYZ(8.7, -22.8, 0.2);
oFitCurve.SetFitPoints(ref aFitPnts);
oFitCurve.BesselTangents = true;
aCurves[2] = new BsplineCurveClass();
aCurves[2].FromInterpolationCurve(oFitCurve);
BsplineSurface oBsplineSurface = new BsplineSurfaceClass();
oBsplineSurface.FromCrossSections(ref aCurves, MsdBsplineSurfaceDirection.V, 4, true, true);
BsplineSurfaceElement oSurfaceElm = app.CreateBsplineSurfaceElement1(null, oBsplineSurface);
oSurfaceElm.Color = 1;
app.ActiveModelReference.AddElement(oSurfaceElm);
}