Indicates the start of the gradient points.
Set the Offset property to indicate the start of the gradient points in your gradient object. Offset scales to however the gradient is painted, with 0.0 being the start and 1.0 being the end of the gradient. The Offset of each point is where the color is exactly as specified and it transitions from the previous color (if any) up to it, and transitions to the next color (if any) after it. The zero Offset is at the StartPosition of a linear gradient, and on the outside of a radial gradient.