BrushStroke Class
'a class to access the most previous brush stroke in Howler

Function
Eval_v(ByVal t As Single) As VBVector

Function
GetCount() As Single

Sub
Eval_all(ByVal t As Single, x As Single, y As Single, Button As Single, Shift As Single)

Sub
Eval(ByVal t As Single, x As Single, y As Single)