IArcSpline3DCurve_DG Interface
IArcSpline3DCurve_DG gives programmatic access to Arc Spline Curves.
Objects implementing this interface also implement ICurveFreeForm_DG
To create a standalone arc spline curve use a IObjectGenerator_DG.Create() call.
 GetSplineNormals
 GetCurvatureArray
 GetSpline
 MakeSmoothModifyCurvatures
 MakeSmoothAlternating
IPointArray_DG GetSplineNormals()
Returns array of
spline
normals. ith element in the array in a normal vector of plane of ith spline.
IArrayDouble_DG GetCurvatureArray()
The method returns array of double numbers one per spline in the curve. The ith
number is curvature of ith
spline arc. IArrayDouble_DG.Set() will fail if the curvature is too high and the arc would become invalid
(geometrically impossible).
IArc_DG GetSpline(int index)
Use this method to access more advanced properties of an individual spline in
the curve.
void MakeSmoothModifyCurvatures()
Modifies
spline
normals and curvatures to make the whole curve smoothely interpolating the input points
void MakeSmoothAlternating(double curvature)
Assumes that on start the points data is already defined (see ICurveFreeForm_DG) and the first curve is straight. Modifies
spline
normals of every second curve segment and sets its curvature to curvature so that the resulting curve is smooth.
Points are also shifted along the previous straight entity to make this possible. In case when two consequtive straight segments do not belong
to a single plane an additional point is inserted and a twoarc spline is constructed to smoothely connect the straight entities
