9.5.2

864 • CHAPTER 18
THE SHADERS • 865
Smooth Knot
Uses a SmoothStep function to weight an interpolation between the knot to the left of the sample
point and the knot to the right of the sample point. It uses the bias handles to offset the interpolated
value.
Linear Knot
Uses a BoxStep function to weight an interpolation between the knot to the left of the sample point
and the knot to the right of the sample point. It uses the bias handles to offset the interpolated
value.
Linear
Linear falloff/growth between the knots. No bias handles.
None
Uses the color of the knot to the left of the sample point.
Pos
The position of the currently selected knot or bias handle on the gradient. You can type a value into
the box or drag the up/down arrows at the right to move the currently selected knot or bias handle.
Intensity
A measurement for the intensity of the currently selected knot.
Context menu for gradients
To access the context menu for gradients, right-click (Windows) or Command-click (Mac OS) the
gradient. You’ll nd three commands on this menu. Invert Knots reverses the direction of the gradient.
Double Knots doubles the number of knots. Reset sets the gradient to a uniform white color with no
knots.
Other properties
Type
The type of gradient to be created.