User Manual

Controls Tab
The Controls tab consists of color attribute checkboxes that determine which splines are
displayed in the Spline window. The spline graph runs horizontally across with control points
placed horizontally at each of the primary colors. You can manipulate these control points to
change the selected color attribute.
Mode
The Mode options change between No Animation and Animated Points modes. The default
mode is No Animation, where adjustments to the curves are applied consistently over time.
Setting the Mode to Animated Points or Dissolve allows the color curve to be animated
over time.
Dissolve mode is essentially obsolete and is included for compatibility reasons only.
Color Channel Checkboxes
These checkboxes define which splines are editable and are included when using the
Eyedropper to pick a color in the image.
Any number of activated splines can be edited simultaneously; however it’s more convenient to
have only the currently modified spline active to avoid unwanted changes to other splines.
When using the Eyedropper icon, a point is created on all active splines, representing the
selected color.
Spline Window
This graph display is the main interface element of the Hue Curves node, which hosts the
various splines. In appearance, the node is very similar to the Color Curves node, but here the
horizontal axis represents the image’s hue, while the vertical axis represents the degree of
adjustment. The Spline window shows the curves for the individual channels. It is a miniature
Spline Editor. In fact, the curves shown in this window can also be found and edited in the
Spline Editor.
The spline curves for all components are initially flat, with control points placed horizontally at
each of the primary colors. From left to right, these are: Red, Yellow, Green, Cyan, Blue, and
Magenta. Because of the cyclical design of the hue gradient, the leftmost control point in each
curve is connected to the rightmost control point of the curve.
Right-clicking in the graph displays a contextual menu containing options for resetting the
curves, importing external curves, adjusting the smoothness of the selected control
points, and more.
In and Out
Use the In and Out controls to manipulate the precise values of a selected point. To change a
value, select a point and enter the In/Out values desired.
Eyedropper
Left-clicking and dragging from the Eyedropper icon changes the current mouse cursor to an
Eyedropper. While still holding down the mouse button, drag the cursor to a viewer to pick a
pixel from a displayed image. This causes control points, which are locked on the horizontal
axis, to appear on the currently active curves. The control points represent the position of the
selected color on the curve. Use the contextual menu’s Lock Selected Points toggle to unlock
points and restore the option of horizontal movement.
Points are only added to enabled splines. To add points only on a specific channel, disable the
other channels before making the selection.
Chapter – 85 Color Nodes 1888