method for drawing 2 point lines. added ability to offset/shift the values of the line as to allow for casting the line forward or backward.
EXPERIMENTAL: Function for drawing Bezier Curves. the 4 points should act as a deformable rectangle: B------C |...........| A.........D percent of time is a value 0->1 representing the percentage of time traveled.
A simple function method to build color gradient palettes to use in scripts