Align Fold (Aligning Nodes on a Fold Line)
Align Fold (Aligning Nodes on a Fold Line)
The align fold is used for projecting nodes onto a fold line. This is very useful if the nodes do not line up exactly on a fold line or if the fold line is in slightly the wrong position. The adjacent figure shows the align fold creation menu. In this example the option has been set. This can be turned on or off by using the button.
The normal options for selecting the nodes for the align fold can be used. You can select the nodes you want to fold using the options. Alternatively, you can use the nodes which were folded in the previous fold by using the option.
For both options you give a fold point and a fold angle to define the fold line. The nodes which will be aligned are highlighted on the screen. The Tolerance option can be used to increase the tolerance for selecting the nodes which will be moved onto the fold line.
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The default options for the align fold just move the selected nodes onto the fold line. The following figures show the effect of this option with pictures before and after the align fold.
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Folds work best if the nodes adjacent to the fold line are a constant distance from the fold line. The option does this. If the option is set then if a node from an element is moved onto a fold line the other nodes on the element which are not on the fold line will be moved to be a constant distance away. You can enter the distance to position the nodes with the box. The diagram in the panel updates to show you that you are using the tramlines option. The following figures show the effect of the tramlines option with pictures before and after the align fold.
With the tramlines option set the adjacent nodes are a fixed distance from the fold line. Compare the above pictures to the ones with the tramlines option not set. |
