The Curve node

The Curve node provides a picture tone remapping interface, similar to other 2D image-altering tools. The user can remap the input, which can be either monochrome or colored, by setting points and modifying Bezier curves. It is extremely helpful when used to remap gradient transitions to a particular height profile.

This enables incredibly accurate modeling of bevel profiles and other similar shapes. The Curve node provides a full-featured curve editor instead of the conventional basic UI with sliders and settings that most other nodes have.

So, let us apply Curve to some existing nodes:

1. In Figure 8.42, you will notice that the Tile Generator brick map is blurry at the edges. We need to remove this blurriness:

Figure 8.42 – Tile Generator blurry edges

2. Add the Curve node between Tile Generator and Flood Fill, as shown in Figure 8.43, and then double-click Curve to activate its parameters inside the PROPERTIES window...