Main Ring layout algorithm properties

When the Main Ring schematic layout algorithm is chosen in the Layout Task drop-down list, clicking the Layout Algorithm Properties icon on the Schematic Editor toolbar opens its associated properties dialog box as follows:

Main Ring properties dialog box

The parameter values are those either specified by default by Schematics or specifically set as default for the schematic diagram template related to the active diagram using the Schematic Dataset Editor Layout Task tab for this schematic diagram template.

Ring Type options

The Ring Type options specify the form of the main ring.

The figures below show the Main Ring type parameters. Figure 1.1 represents the initial schematic diagram. Figure 1.2 shows the result when the Ellipse ring type option is selected. Figure 1.3 shows the result when the Rectangle ring type option is selected.

Main Ring—Type

Ring Dimension parameters

The Ring Dimension parameters define the dimension of the ring. The unit for these parameters depends on the Absolute units check box.

The figures below show how the ring is displayed according to different values of the Width and Height parameters while the Absolute units check box is unchecked.

Main Ring—Dimension

Trees Type options

The Trees Type options determine the layout of the trees coming out of the main ring's nodes.

Figures 3.1 to 3.6 below show the Main Ring layout results for each of the available Type options.

Main Ring—Tree Type 1
Main Ring—Tree Type 2
Main Ring—Tree Type 3

Spacing parameters

The Spacing parameters determine how the spacing between the trees' hierarchical levels and the schematic nodes belonging to a given tree's hierarchical level are computed. The unit for these parameters depends on the Absolute units check box.

The figures below show the Main Ring result with different values for the Between nodes perpendicular to the direction and the Between nodes along the direction parameters when using the Compact tree type to arrange the tree coming out of the main ring's nodes and the Absolute units check box is unchecked. Figure 4.1 represents the initial schematic diagram. Figure 4.2 shows the result with Between nodes along the direction = 5 and Between nodes perpendicular to the direction = 5. Figure 4.3 shows the result with Between nodes along the direction = 10 and Between nodes perpendicular to the direction = 5. Figure 4.4 shows the result with Between nodes along the direction = 15 and Between nodes perpendicular to the direction = 10.

Main Ring—Spacing

Link display parameter

Type a number between 0 and 1 to define the relative position of the break point on the last segment of the tree schematic links. The default value is 0.5 unless another default number is specified for the diagram template related to the active diagram.

When Break point is set to a value of 0, this segment length is the longest, and it is displayed with a right angle. With a break point value of 1, this segment doesn't exist, so each link directly connects its two extremity nodes without an intermediate point.

Figures 5.1 to 5.6 below show the Main Ring layout results with different break point values.

Main Ring—Break point

Links currently selected prevent the algorithm from executing beyond them check box

All Schematics layout algorithms apply on all features in the diagram or on the currently selected features in the diagram.

The Main Ring layout algorithm works in the same way except when the Links currently selected prevent the algorithm from executing beyond them check box is checked. When this box is checked, the currently selected links are interpreted as barriers beyond which the algorithm is not applied.

By default, this check box is unchecked.

HinweisHinweis:

When the box is checked and the selected schematic links belong to the tree branches coming out of the main ring's nodes, the related trees are not hierarchically arranged beyond those selected links.

HinweisHinweis:

When the box is checked and at least one schematic link is selected for all loops contained in the diagram, the main ring algorithm can't be executed.

Absolute units check box

By default, the Dimension and Spacing parameters are interpreted as absolute units determined by the coordinate system specified on the XY Coordinate System tab of the Schematic Diagram Properties dialog box (Absolute units checked). Uncheck the Absolute units check box if you want these parameter values to be interpreted as units relative to the average of the current symbol sizes used to represent the schematic nodes in the diagram. In this case, when the Width parameter value is 6, the main ring width corresponds to the average size of six symbols placed side by side.

HinweisHinweis:

Specifying parameters in relative units is easier than in absolute units but has a real meaning only when there is a reference scale for the diagram.

Restore Defaults button

Click the Restore Defaults button to set all the Main Ring parameters to their default values. The restored values are either those specified by default by Schematics or those specifically set as default for the schematic diagram template related to the active diagram using the Schematic Dataset Editor's Layout Task tab for this schematic diagram template.

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7/10/2012