The new port Force2 is directly connected to the same Add node as Force1.
You can manage ports by right-clicking on them in the blue areas on either side.
To re-name an exposed port, do one of the following:
• Double-click on it in the blue area and type a new name.
or
• Right-click on it, choose Rename, and type a new name.
or
• Right-click on it, choose Properties, and enter a new string in the Name box.
To move an exposed port, right-click on it in the blue area and choose Move Up or Move Down.
Defining Multi-Instance Input Ports
You can define ports that allow multiple instances, like the Add node or Add Forces compound. Compounds with a port defined in this way show a virtual port labelled “New (portname)”. You can use these virtual ports to connect an arbitrary number of inputs. This is useful when you want to add an arbitrary number of items, allow for an arbitrary number of geometry inputs, and so on.
To define multi-instance input ports
1. Right-click on an exposed port in the blue area at left and choose Properties.
2. Set a value for Expose Type:
- Single. This acts as an ordinary input port and allows only a single connection.
- Multi - Connect New Ports to Existing Node. This allows multiple connections, and connects them all to the same node as the first one. The input port on the node to which the exposed port is connected must support multiple instances, like the Value port of an Add node.
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The new port Force2 is directly connected to the same Add node as Force1. |
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- Multi - Connect New Ports Through New Node (copy values). This allows multiple connections, and connects them to the same node through a copy of a node on the first exposed instance. There can be only one node between the exposed port and the input port that supports multiple instances — if you require more complex connections, you can embed them in a single compound between the exposed port and the multi-instance input.
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The new port Force2 is connected to the Add node through a copy of the Multiply by Scalar node. In this picture, nodes have been rearranged for clarity. |
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- Multi - Connect New Ports Through New Node (default values). This is similar to the previous option, but instead of copying the node between the exposed port and the multi-instance input, it imports a fresh instance of the intervening node using its default values. If you are using a compound between the exposed port and the multi-instance input, that compound must have been exported.
Multi-Instance Port Groups
If two or more exposed ports are connected to the same multi-instance input and they both have Expose Type set to either Multi - Connect New Ports Through New Node (copy values) or (default values), they form a port group. Connecting an input to any one of the New virtual ports creates a new instance of all of them.
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Connecting to either New (Force1) or New (Factor1) creates both Force2 and Factor2. In this picture, nodes have been rearranged for clarity. |
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Setting Minimum and Maximum Values
You can define minimum and maximum values for scalar and integer ports.
To define minimum and maximum values
1. Right-click on an exposed port in the blue area at left and choose Properties.
2. Set the Min and Max values.
The Picking string for operator is used as a prompt in the mouse line when applying a compound using the ApplyICEOp command. It is useful for picking scene reference inputs, such as with the Footprints compound. For more information about applying compounds, see Applying ICE Compounds.
Instead of sliders or numeric inputs for integers and scalars, you can predefine values like Slow, Medium, and Fast. Users can select these values from a menu box in your compound’s property editor. This is particularly useful when using the Select Case node to execute different parts of a tree based on a chosen integer value.
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It is still possible to set different values by connecting to the port instead of using the menu box in the property editor. |
To predefine values
1. Right-click on an exposed port in the blue area at left and choose Properties.
2. Enter a Combo string and a corresponding Combo value.
3. Click Add combo.
4. Repeat to predefine additional values. The values defined so far are shown in the table.
To change predefined values
• In the table, double-click on the cell you want to change and then enter a new string or value.
To remove predefined values
1. In the table, click anywhere in the row of the value you want to remove.
2. Click Remove combo.
You cannot lock values in compounds. If you don’t want users to change a value easily, don’t expose its port.
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