3d:geo-nodes [mh8 Wiki]

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====== Geometry Nodes ======

====== Setup =====

Enable **Node Wrangler** add-on.

Set **Spacebar** to search.

Set the maximum **Undo steps** to 256.

It can be useful to have a large graph section in the middle and the Viewport and Spreadsheet in a column on the left.


===== Fundamentals =====

Selecting an object and clicking on ''New'' in the Geometry Node Editor will add a Geometry node modifier to that object.

The **Spreadsheet** panel displays information on the way the geometry is being evaluated with information on (for example) the position of Vertices, Edges, Faces and Face Corners. These Face corners are for each vertex the way it unwraps on the UV (on a cube, each vertex will have 3 face corners attached).

Inputs and Outputs are color-coded by type (hover over to know the type) and they have a shape : circles are expecting or emitting a single value where diamonds are expecting or emitting field values.

===== Keyboard Shortcuts =====

  * **''SHIFT'' + ''ALT'' + ''LEFT CLICK'' :** Automatically connect target node to Group Output.

  * **''BACKSPACE'' :** Reset target node to default values.

  * **''SHIFT'' + ''RIGHT CLICK'' :** Drag a knife tool on noodles to create intersections.

  * **''LEFT CLICK'' + ''DRAG'' :** On an output pin opens a pop-up with all the nodes that can be connected to this node.

===== Fields =====

Noodles with dotted lines are actually field values and can be thought of as lists or arrays in programming. They contain a value for a select number of items.