CleanSpline

`CleanSpline(controlPointArray, segments)`

Returns: Spline struct

Name	Datatype	Purpose
`controlPointArray`	array	Array of x/y coordinate pairs for control points for the spline
`segments`	integer	Number of segments to use to build the spline

N.B. A shape will only draw when you call the .Draw() method. Splines tend not to cope well with very sharp angles and very short distances so be careful about the geometry you're trying to draw.

Splines have the following methods:

`.Draw()`

Returns: N/A (undefined)

Name	Datatype	Purpose
None

`.Blend(color, alpha)`

Returns: self

Name	Datatype	Purpose
`color`	24-bit color	Color of the spline
`alpha`	number	Alpha value of the spline

`.Blend2(color1, alpha1, color2, alpha2)`

Returns: self

Name	Datatype	Purpose
`color1`	24-bit color	Color of the start of the spline
`alpha1`	number	Alpha value of the start of the spline
`color2`	24-bit color	Color of the end of the spline
`alpha2`	number	Alpha value of the end of the spline

`.BlendExt(array)`

Returns: self

Name	Datatype	Purpose
`array`	array	Array of color/alpha pairs to colour the spline

Multi-vertex blending uses triangle-based interpolation and can look ugly with large differences in colour. Use with caution!

`.Thickness(pixels)`

Returns: self

Name	Datatype	Purpose
`pixels`	number	Width of the line

`.Cap(startType, endType)`

Returns: self

Name	Datatype	Purpose
`startType`	string	Cap type for the start of the line, either `"none"`, `"square"`, `"round"`, or `"closed"`
`endType`	string	Cap type for the end of the line, either `"none"`, `"square"`, `"round"`, `"closed"`