Each node has one or more connectors, represented by circles. There are three types of connectors:
When using masks, you can drive one parameter of the output terrain to give a variable result over the terrain.
Links connect node connectors. An input connector must link to an output connector and the connectors must be of the same type, for example terrain connectors; it is not possible to connect a terrain connector to a mask connector.
To connect nodes with a link, click on a connector on the first terrain and drag the mouse cursor to the connector on the second terrain, and release the mouse button.
You can create several links from one output connector.
If the mouse cursor changes into a "no-entry" sign, it means that the two connectors cannot be connected together.
This is the case if the two connectors are two input connectors or two output connectors, or if they do not have the same type (e.g. terrain and mask). For example, the Perlin noise node generates an output terrain, but the Reduce mask node expects an input mask, so they cannot be connected.
It is also forbidden to create a new link that would create a cycle inside the graph.
To change a link, i.e. point it to another connector, click and hold the mouse button the connector to detach it, drag the mouse cursor to another new connector, and then release the mouse button.
To delete a link, either:
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