Lathe Surface

The LatheSurface class uses a 2D curve (Path) rotated about the Y axis to create a surface. Once created, the surface is used to create a 3D object in the LatheStock class.

The picture on the left shows the 2D Bezier spline used to create the LatheStock shape on the right.

Creating the LatheSurface

Constructors 
LatheSurface(Path path, int nbrSegs)
LatheSurface(Path path, int nbrSegs, float startAngle, float endAngle)
Parameter Comments 
path
 the 2D path representing the shapes contour 
startAngle, endAngle
 defines the start and end angles for the rotation. Both angles are normalised to the range 0-2π (radians). In the first constructor these parameters are missing so a full 360° rotation is applied. 
nbrSegs
 specifies the number of segments the rotation is split into so controls the smoothness of the surface round the Y axis.