Using the Junction Lines Wizard  

This task shows you how to use the junction lines wizard to create, check, validate junction lines,
and find locations where they are missing or incorrect.

You must have created a Grid.

The junction lines created are associated to the ramp supports.
This means that modifications that impact them will be properly propagated and handled
but for instance, adding a ply will not modify the line created.

1. Click Iso-Thickness Junction Wizard in the Top Surface & Solid toolbar.

   Select Iso-thickness Area Group as the Iso-thickness Areas Group. The input of an iso-thickness areas group is mandatory. Select a geometrical set containing all the existing junction lines as the Existing Junction lines set (Optional) only if you want to check and validate existing junction lines. This input is optional. Edit and Compute become available once you have selected a group of iso-thickness areas.

2. Choose to compute or not junction lines.
   By default, the check box Do not compute junction lines is not selected.

3. Click Edit to edit the iso-thickness areas group.
   

4. Click Compute.

   The wizard finds all the points at the corners of the iso-thickness areas of the group. If a line between two points intersects an iso-thickness area this line is not considered a potential junction line. If a line between two points does not intersect an iso-thickness area this line is considered a potential junction line. The analysis produces several groups of points, e.g. If a group contains only two points, the line between those two points is proposed as a junction line. If a group contains more than two points, they are joined two by two. If plies corners coincide with a line, this line is proposed as a junction line, otherwise it is not. The dialog box is populated with the result of the computation: The groups are displayed in the order of the statuses: Red traffic light: no junction line found or proposed, Yellow traffic light: a junction line has been found or proposed, but your validation is requested, Green traffic light: a junction line has been found or proposed, and seems to be correct, Validated (green check): a junction line has been found or proposed, and you have validated it. For each group, you can see its index, number of points, status and some information. The groups of points are also displayed in the 3D viewer: With their thickness, With the traffic light representing their status, With a dotted green line is the status is green but not yet validated, With a solid green line when it is validated, With a solid blue line when the junction line is part of an existing junction lines set.

5. Select the 3D display options you need

   Reframe on selected group, Reframe on next group that is not checked, Directly or Animated (defining how the reframes are done), Hide/Show Stacking.

6. In the dialog box, select one or several lines
   and click Validate to validate the corresponding junction lines.
   As you select a line in the dialog box, a reframe is done in the authoring window
   according to the options you have selected in the previous step

7. Drag the cursor over a vertex.
   The two ramp supports that intersect at this vertex are displayed.

8. Click a point and drag the cursor.

   A dotted lined is displayed as you drag the cursor. It is red, until you pass the cursor over another point. If that point belongs to another iso-thickness area, or is a GSD point , the dotted line turns green, meaning a junction line will be created between those two points. If that point belongs to the same iso-thickness area, this iso-thickness area will be relimited by the dotted line.
   	The iso-thickness area can be relimited or trimmed.

9. To remove any potential or validated junction line, drag the cursor over the line until a red cross appears.
   Click that red cross. The junction line is removed from the preview and will not be created.

10. Click a traffic light.
    Its junction lines are validated, and you go to the next group of points to validate.

11. When you have checked and validated all the groups, click OK to validate exit the dialog box.

    Junctions lines are created either in the geometrical set containing existing junction lines you have selected, or in a new geometrical set named Junction lines (Generated by wizard): Junction lines previewed as solid green lines, i.e. validated by you, are created. Junction lines previewed as dotted green lines, i.e. not validated by you, are not created. A message is displayed. Junction lines previewed as blue lines, i.e. existing and not modified , remain unchanged. Junction lines that you have removed from the preview are removed. Iso-thickness areas are relimited, if need be. The geometry required to perform this relimitation is added under the iso-thickness area.