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// Copyright (C) 2024 Rubén Beltrán del Río
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with this program. If not, see https://map.tranquil.systems.
import Foundation
struct RenderableMap {
let vertices: [Vertex]
let edges: [MapEdge]
let inertias: [Inertia]
let opportunities: [Opportunity]
let notes: [Note]
let stages: [CGFloat]
let groups: [[Vertex]]
static let empty: RenderableMap = RenderableMap(
vertices: [], edges: [], inertias: [], opportunities: [], notes: [], stages: defaultDimensions,
groups: [])
static func from(_ entities: [Wmap.Entity]) -> RenderableMap {
var vertices: [Vertex] = []
var edges: [MapEdge] = []
var inertias: [Inertia] = []
var opportunities: [Opportunity] = []
var notes: [Note] = []
var stages: [CGFloat] = [25.0, 50.0, 75.0] // default dimensions
var groups: [[Vertex]] = []
// Build a vertex lookup for edges, groups, etc.
var vertexMap: [String: Vertex] = [:]
var vertexIdCounter = 0
for entity in entities {
switch entity {
case .vertex(let vertex):
let newVertex = Vertex(
id: vertexIdCounter,
label: vertex.label,
position: CGPoint(x: vertex.coordinates.0, y: vertex.coordinates.1),
shape: convertShape(vertex.shape)
)
vertices.append(newVertex)
vertexMap[vertex.label.lowercased()] = newVertex
vertexIdCounter += 1
case .note(let note):
notes.append(
Note(
id: notes.count,
position: CGPoint(x: note.coordinates.0, y: note.coordinates.1),
text: note.text
))
case .stage(let stage):
let stageIndex = convertStageNumber(stage.number) - 1
if stageIndex >= 0 && stageIndex < 3 {
stages[stageIndex] = stage.value
}
default:
continue
}
}
// Second pass for entities that depend on vertices
for entity in entities {
switch entity {
case .edge(let edge):
if let fromVertex = vertexMap[edge.from.lowercased()],
let toVertex = vertexMap[edge.to.lowercased()]
{
edges.append(
MapEdge(
id: edges.count,
origin: fromVertex.position,
destination: toVertex.position,
arrowhead: edge.isDirected
))
}
case .inertia(let inertia):
if let vertex = vertexMap[inertia.vertex.lowercased()] {
inertias.append(
Inertia(
id: inertias.count,
position: vertex.position
))
}
case .evolution(let evolution):
if let vertex = vertexMap[evolution.vertex.lowercased()] {
let direction: CGFloat = evolution.isPositive ? 1.0 : -1.0
let destination = CGPoint(
x: vertex.position.x + (direction * evolution.value),
y: vertex.position.y
)
opportunities.append(
Opportunity(
id: opportunities.count,
origin: vertex.position,
destination: destination
))
}
case .group(let group):
var groupVertices: [Vertex] = []
for vertexName in group.vertices {
if let vertex = vertexMap[vertexName.lowercased()] {
groupVertices.append(vertex)
}
}
if !groupVertices.isEmpty {
groups.append(groupVertices)
}
default:
continue
}
}
return RenderableMap(
vertices: vertices,
edges: edges,
inertias: inertias,
opportunities: opportunities,
notes: notes,
stages: stages,
groups: groups
)
}
private static func convertShape(_ shape: String?) -> VertexShape {
guard let shape = shape?.lowercased() else { return .circle }
switch shape {
case "square": return .square
case "triangle": return .triangle
case "x": return .x
default: return .circle
}
}
private static func convertStageNumber(_ stageNumber: String) -> Int {
switch stageNumber.lowercased() {
case "i": return 1
case "ii": return 2
case "iii": return 3
case "iv": return 4
default: return 1
}
}
}
struct Vertex: Identifiable, Hashable {
let id: Int
let label: String
let position: CGPoint
var shape: VertexShape = .circle
}
struct Note {
let id: Int
let position: CGPoint
let text: String
}
enum VertexShape: String {
case circle
case square
case triangle
case x
}
struct MapEdge {
let id: Int
let origin: CGPoint
let destination: CGPoint
let arrowhead: Bool
}
struct Inertia {
let id: Int
let position: CGPoint
}
struct Opportunity {
let id: Int
let origin: CGPoint
let destination: CGPoint
}
struct StageDimensions {
let index: Int
let dimensions: CGFloat
}
private let defaultDimensions: [CGFloat] = [
25.0,
50.0,
75.0,
]
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