Edge Attributes

Visibility

The show attribute determines if edges are rendered. Hidden edges are not considered for edge routing.

Type: bool.

Level of Detail

The lod-map attribute can be set to a function mapping zoom levels to discrete level of detail values. The function takes a single float parameter and returns an integer value. See Zoom and Viewport for details on how to use the level of detail to change the appearance of edges on different zoom levels.

Type: Callable | None

Arrow Tips

The start-arrow-tip and end-arrow-tip attribute determines if edges are rendered with arrow tips.

Type: ArrowTip | None.

Possible values are:

Arrow	Value	Description
No tips	None	Uses a single edge segment connecting start and endpoint.
Arrow	ArrowTip.ARROW	Show an arrow tip using characters matching the `edge-segment-drawing-mode`.

Examples

Label

The label attribute can be set to render a label on the edge.

Type: str | None.

Example

Style

The style attribute determines the rich style used to render the edge characters.

Type: Style | None.

Examples

Dash Pattern

The dash-pattern attribute determines a dash pattern. You can pass a list of integer values to it and the list will repeat an alternating on-off pattern for edges drawn.

Examples

Magnets

The start-magnet and end-magnet attributes determine to which side of the node the edge is connected.

Type: Magnet | None

Possible values are:

Magnet	Value	Description
Left	Magnet.LEFT	Connect to the left side of the node
Right	Magnet.RIGHT	Connect to the right side of the node
Top	Magnet.TOP	Connect to the top side of the node
Bottom	Magnet.BOTTOM	Connect to the bottom side of the node
Closest	Magnet.CLOSEST	Connect to the closest magnet position.

Ports

The start-port and end-port attributes determine to which port of the corresponding node the edge is connected to. The port needs to be declared as a property of the node. If set, the start-magnet and end-magnet attributes are ignored respectively.

Type: str | None

Edge Routing Mode

The edge-routing-mode attribute determines how edges are routed from start to end point.

Each edge is represented as a concatenation of one or more edge segments (straight lines).

Type: EdgeRoutingMode | None

Possible values are:

Edge Routing Mode	Value	Description
Straight	EdgeRoutingMode.STRAIGHT	Uses a single edge segment connecting start and endpoint. (Default)
Orthogonal	EdgeRoutingMode.ORTHOGONAL	Uses multiple vertical or horizontal edge segments.

Example

Edge Segment Drawing Mode

The edge-segment-drawing-mode attribute determines how individual edge segments (straight lines) are drawn to the terminal.

Possible values are:

Edge Segment Drawing Mode	Value	Description
Single character	EdgeSegmentDrawingMode.SINGLE_CHARACTER	Uses a single character to draw the whole edge. (Default)
Box	EdgeSegmentDrawingMode.BOX	Uses box drawing characters to draw lines. Corners between edge segments are merged. Works only with EdgeRoutingMode.ORTHOGONAL.
Rounded Box	EdgeSegmentDrawingMode.BOX_ROUNDED	Uses box drawing characters to draw lines. Corners between edge segments are merged using rounded box characters. Works only with EdgeRoutingMode.ORTHOGONAL.
Heavy Box	EdgeSegmentDrawingMode.BOX_HEAVY	Uses thicker box drawing characters to draw lines. Corners between edge segments are merged. Works only with EdgeRoutingMode.ORTHOGONAL.
Double Box	EdgeSegmentDrawingMode.BOX_DOUBLE	Uses double line box drawing characters to draw lines. Corners between edge segments are merged. Works only with EdgeRoutingMode.ORTHOGONAL.
ASCII compatible	EdgeSegmentDrawingMode.ASCII	Uses ASCII characters to draw orthogonal lines. Corners between edge segments are merged with plus signs. Works only with EdgeRoutingMode.ORTHOGONAL.