Generation of WSPs from Existing Shapes

In the Derive page of WSP Manager, you can generate width spacing patterns from existing shapes within a region of the layout canvas, based on the width, spacing, and color of the shapes.

The guidelines for generating WSP tracks are listed below:

• The visible shapes on all the visible hierarchy levels are considered.
• Only one WSP track is created for multiple shapes on the same layer with the same width, color, and centerline. If there is a colored shape that either overlaps or is next to a gray shape with the same width and centerline, only the colored track is created.
• The routing direction is determined by evaluating the following conditions, in order:
  • If the width/height ratios for all the shapes on a layer in the search box are consistent, then the routing direction is the direction where the length is more. For example, if all the same-layer shapes in the search box are longer in the vertical direction, then the routing direction is vertical.
  • If the routing direction cannot be determined by the width/height ratio, then the preferred routing direction for the layer is used, unless it is bidirectional.
  • If neither of the first two conditions is met, then no WSP is generated.
• Tracks are modeled for the shapes that are fully or partially inside the search box. If the centerline of the track is within the search box, or on the left or bottom edge of the search box, then the track is included in the generated WSP.
• The generated WSP is anchored to the PR boundary, if it exists, or to the origin.
• Tracks are not generated for labels in the design.