Shapes from graphs

Graph networks can automatically create shapes, such as lots or street shapes.

Graph network and outputs
The input is a graph network and the output are lots and street shapes.

Manage graph shapes

You can manage the following shapes in the Inspector window:

Segment Segment parameters

Segments can contain a street centerline, roadbed lanes, and sidewalk lanes. When a segment is highlighted or selected you can work with street configurations.

Roadbed lane Roadbed lane parameters

The roadbed lanes are usually lanes adjacent to the centerline of a street.

Sidewalk lane Sidewalk lane parameters

The sidewalk lanes are lanes outside of the roadbed lanes.

Node Node parameters

Nodes create intersection shapes. See Node parameters.

Block

When a graph network is enclosed a block is created. See Block parameters.

Lot

Lots can have Lot, LotCorner, or LotInner default rules. See Lot default rules.

To enable or disable shape creation, use the Create Shape parameter at the block, street, or node parameters in the Inspector window. By default, shape creation is enabled.

Shapes generated by nodes and segments from default start rules, such as Street, Sidewalk, or Roundabout, are specified by their shape types; see Street and intersection shapes. Additionally, the Edit street/curves tool can be used to edit the street curve handles.

Note:

For each loop in the graph network, a block is automatically created; see Graphs for details.

Object attribute inheritance

The following lists the considerations for object attribute inheritance:

  • Lots inherit the attributes of the block.
  • Street shapes inherit the attributes of the segment.
  • Intersection shapes inherit the attributes of the node.
  • New object attributes will always be added to the node or segment.

UV coordinates

UV coordinates are generated for each shape. They can be used for UV Splits and texturing. For details of the UV coordinates; see Street and intersection shape UV.