tx_layer

The layer on which the constraint is applied.

Type: String (layer and purpose names) or Integer (layer number)

"width" nil nil

This identifies the index for table.

g_table

The format of the table row is as follows:

(f_width (g_ranges))

where,

• f_width is the width of the neighboring shape.
• g_ranges is a list of the allowed width ranges, applied when the width of the neighboring shape is greater than or equal to the corresponding index.

Type: A 1-D table specifying floating point width values

'distanceWithin f_within

The constraint applies only if the distance between the shapes is less than this value.

'widthRanges g_widthRanges

The constraint applies only if the widths of the shapes on the specified layer falls in these width ranges.

Type: Floating-point values specifying width ranges

'insideLayers (tx_layer1 tx_layer2 … tx_layerN)
| 'outsideLayers (tx_layer1 tx_layer2 … tx_layerN)

Determines if the constraint applies, based on the presence or absence of one or more layers.

• 'insideLayers: The constraint applies only if the shapes on the specified layer (layer) overlap a shape on one of these layers (layer1 layer2 … layerN).
• 'outsideLayers: The constraint applies only if the shapes on the specified layer (layer) overlap the region outside the shapes on one of these layers (layer1 layer2 … layerN).

For more information, see Region-based Rule (One layer).

Type: String (layer name) or Integer (layer number)

'insidePurposes (t_purpose1 t_purpose2 … t_purposeN)

The 'insideLayers parameter is limited to only the specified purposes.

Type: String (purpose name)

'outsidePurposes (t_purpose1 t_purpose2 … t_purposeN)

The 'outsideLayers parameter is limited to only the specified purposes.

Type: String (purpose name)

f_default

The width value to be used when no table entry applies.