VECTORSPLINE

typedef struct _VECTORPOLYBEZIERSPLINE
{
   VECTOROBJECT Object;
   VECTORPOINT *Point;
   L_INT nPointCount;
   VECTORPEN Pen;
   L_UINT32 dwFlags;
} VECTORSPLINE,  *pVECTORSPLINE;

The VECTORSPLINE structure holds information about the spline object.

Member	Description
Object	Abstract object.
Point	Pointer to an array of points which controls the spline’s path depnding on the spline type. The number of points should be: ( puDegree[ 0 ] + puDegree[ 1 ] + … + puDegree[ nSecCount – 1 ] ) + 1
nPointCount	Number of points in the points
Pen	VECTORPEN structure that contains information about the pen to use when drawing the vector spline object
dwFlags	Flag that indicates the mode in which to draw the spline. Possible values are:
	Value	Meaning
	VECTOR_SPLINE_FITPOINTS	Sets the spline mode to Fit Points. This is the default.
	VECTOR_SPLINE_CONTROLPOINTS	Sets the spline mode to Control Points.

Comments

The spline can be drawn in two modes:

Fit Points: The spline path MUST pass through each and every point specified.
Control Points: The points are used to control the spline path, but not necessarily pass through all of them.