BitQuirky.Graph.GraphView.ViewModels

Assembly: BitQuirky.Graph.GraphView.Editor

GraphViewModel

Category: Low-level runtime

C#

class BitQuirky.Graph.GraphView.ViewModels.GraphViewModel

Source declaration: ../bitquirky-graph/Editor/GraphView/ViewModels/GraphViewModel.cs:11-28

The document a canvas renders: the graph itself plus the viewport and node positions that belong to the view rather than to the model.

Members

Graph

C#

public BitQuirky.Graph.GraphDefinition Graph { get; set; }

Source declaration: ../bitquirky-graph/Editor/GraphView/ViewModels/GraphViewModel.cs:14

The graph being rendered.

Layout

C#

public BitQuirky.Graph.GraphView.ViewModels.LayoutState Layout { get; set; }

Source declaration: ../bitquirky-graph/Editor/GraphView/ViewModels/GraphViewModel.cs:16

Node positions and the viewport. The canvas writes pan, zoom, and dragged positions back into this object.

GraphViewModel(GraphDefinition graph, LayoutState layout)

C#

public GraphViewModel(BitQuirky.Graph.GraphDefinition graph, BitQuirky.Graph.GraphView.ViewModels.LayoutState layout = null)

Source declaration: ../bitquirky-graph/Editor/GraphView/ViewModels/GraphViewModel.cs:23-27

Wrapsgraph for rendering, with layoutsupplying remembered node positions and viewport; null for either installs an empty one, so the canvas opens on a blank graph or an unpositioned one rather than failing.

LayoutState

Category: Low-level runtime

C#

class BitQuirky.Graph.GraphView.ViewModels.LayoutState

Source declaration: ../bitquirky-graph/Editor/GraphView/ViewModels/LayoutState.cs:14-30

The view-only arrangement of a graph: where each node sits and where the reader is looking. Held alongside the graph so a host can persist and restore it without touching the model.

Members

Pan

C#

public UnityEngine.Vector2 Pan { get; set; }

Source declaration: ../bitquirky-graph/Editor/GraphView/ViewModels/LayoutState.cs:20

Viewport offset in pixels applied before zoom.

PinnedNodes

C#

public System.Collections.Generic.HashSet<System.Guid> PinnedNodes { get; set; }

Source declaration: ../bitquirky-graph/Editor/GraphView/ViewModels/LayoutState.cs:29

Nodes whose positions are absolute (user-authored) rather than derived from an automatic layout basis. Explicit host auto-layout operations keep these entries exactly where the supplied layout placed them; geometry changes never move nodes.

Positions

C#

public System.Collections.Generic.Dictionary<System.Guid, UnityEngine.Vector2> Positions { get; set; }

Source declaration: ../bitquirky-graph/Editor/GraphView/ViewModels/LayoutState.cs:18

Graph-space top-left position of each node, keyed by node id. Nodes missing from the map keep whatever position they were rendered at.

Zoom

C#

public float Zoom { get; set; }

Source declaration: ../bitquirky-graph/Editor/GraphView/ViewModels/LayoutState.cs:22

Viewport scale factor; 1 renders the graph at its authored size.

Source fingerprint: sha256:ad0983d00d773d882bc61865e18d8c5559e009d181e5891575cd7f262515b23e