Clamp 0 1 Colour
Node Description & Purpose:
The Clamp 0 1 family of nodes allow you to clamp, or restrict, the values of the colour or scalar coming into the Input between 0 and 1. If the value is less than 0 it will become 0. If the value is greater than 1 it will become 1. The clamping is done component-wise for colours. Here is an example using a colour with the following values:
Input.red is -1
Input.green is 0.5
Input.blue is 2
After clamping the colour will have these values:
Input.red becomes 0 (-1 was less than 0, so it becomes 0)
Input.green remains 0.5 (0.5 is between 0 and 1, so it's unchanged)
Input.blue becomes 1 (2 was greater than 1, so it becomes 1)
Node Type: Function
This node has no other settings apart from the Input node.
A scalar is a single number. 1, 200.45, -45, -0.2 are all examples of scalar values.
A single object or device in the node network which generates or modifies data and may accept input data or create output data or both, depending on its function. Nodes usually have their own settings which control the data they create or how they modify data passing through them. Nodes are connected together in a network to perform work in a network-based user interface. In Terragen 2 nodes are connected together to describe a scene.