git.r.bdr.sh - rbdr/map/blob - Map/MapRender.swift

   1 //
   2 //  ContentView.swift
   3 //  Map
   4 //
   5 //  Created by Ruben Beltran del Rio on 2/1/21.
   6 //
   7
   8 import SwiftUI
   9 import CoreData
  10 import CoreGraphics
  11
  12 struct MapRenderView: View {
  13     @ObservedObject var map: Map
  14     let evolution: Stage
  15
  16     let VERTEX_SIZE = CGSize(width: 25.0, height: 25.0)
  17     let ARROWHEAD_SIZE = CGFloat(10.0)
  18     let LINE_WIDTH = CGFloat(1.0)
  19     let PADDING = CGFloat(4.0)
  20     let STAGE_FRAME = CGSize(width: 245, height: 50)
  21
  22     var parsedMap: ParsedMap {
  23         return map.parse()
  24     }
  25
  26     var body: some View {
  27         ZStack(alignment: .topLeading) {
  28             ZStack (alignment: .topLeading) {
  29             // The Axes
  30             Path { path in
  31                 path.move(to: CGPoint(x: 0, y: 0))
  32                 path.addLine(to: CGPoint(x: 0, y: 1000))
  33                 path.addLine(to: CGPoint(x: 1000, y: 1000))
  34                 path.move(to: CGPoint(x: 1000, y: 1000))
  35                 path.closeSubpath()
  36
  37             }.strokedPath(StrokeStyle(lineWidth: LINE_WIDTH * 2))
  38             Text("Visible").font(.title3).rotationEffect(Angle(degrees: -90.0)).offset(CGSize(width: -35.0, height: 0.0))
  39             Text("Value Chain").font(.title).rotationEffect(Angle(degrees: -90.0)).offset(CGSize(width: -72.0, height: 480.0))
  40             Text("Invisible").font(.title3).rotationEffect(Angle(degrees: -90.0)).offset(CGSize(width: -40.0, height: 980.0))
  41                 Text(evolution.I).font(.title3).frame(width: STAGE_FRAME.width, height: STAGE_FRAME.height, alignment: .topLeading).offset(CGSize(width: 0.0, height: 1000.0))
  42                 Text(evolution.II).font(.title3).frame(width: STAGE_FRAME.width, height: STAGE_FRAME.height, alignment: .topLeading).offset(CGSize(width: 250.0, height: 1000.0))
  43             Text(evolution.III).font(.title3).frame(width: STAGE_FRAME.width, height: STAGE_FRAME.height, alignment: .topLeading).offset(CGSize(width: 500.0, height: 1000.0))
  44             Text(evolution.IV).font(.title3).frame(width: STAGE_FRAME.width, height: STAGE_FRAME.height, alignment: .topLeading).offset(CGSize(width: 750.0, height: 1000.0))
  45             }.offset(CGSize(width: 0.0, height: 0.0))
  46
  47             // The Lanes
  48             Path { path in
  49                 path.move(to: CGPoint(x: 250, y: 0))
  50                 path.addLine(to: CGPoint(x: 250, y: 1000))
  51                 path.move(to: CGPoint(x: 500, y: 0))
  52                 path.addLine(to: CGPoint(x: 500, y: 1000))
  53                 path.move(to: CGPoint(x: 750, y: 0))
  54                 path.addLine(to: CGPoint(x: 750, y: 1000))
  55                 path.move(to: CGPoint(x: 250, y: 0))
  56                 path.closeSubpath()
  57             }.strokedPath(StrokeStyle(lineWidth: LINE_WIDTH, dash: [10.0]))
  58
  59             Path { path in
  60                 path.addRect(CGRect(x: 0, y: 0, width: 250, height: 1000))
  61             }.fill(Color.red).opacity(0.1)
  62             Path { path in
  63                 path.addRect(CGRect(x: 250, y: 0, width: 250, height: 1000))
  64             }.fill(Color.orange).opacity(0.1)
  65             Path { path in
  66                 path.addRect(CGRect(x: 500, y: 0, width: 250, height: 1000))
  67             }.fill(Color.yellow).opacity(0.1)
  68             Path { path in
  69                 path.addRect(CGRect(x: 750, y: 0, width: 250, height: 1000))
  70             }.fill(Color.green).opacity(0.1)
  71
  72             // The Vertices
  73
  74             ForEach(parsedMap.vertices, id: \.id) { vertex in
  75                 Path { path in
  76                         path.addEllipse(in: CGRect(
  77                             origin: vertex.position, size: VERTEX_SIZE
  78                         ))
  79                 }
  80                 Text(vertex.label).foregroundColor(Color.gray).offset(CGSize(
  81                                         width: vertex.position.x + VERTEX_SIZE.width + PADDING,
  82                                         height: vertex.position.y))
  83             }
  84
  85             // The Edges
  86
  87             ForEach(parsedMap.edges, id: \.id) { edge in
  88                 Path { path in
  89
  90                     let slope = (edge.destination.y - edge.origin.y) / (edge.destination.x - edge.origin.x)
  91                     let angle = atan(slope)
  92                     let multiplier = CGFloat(slope < 0 ? -1.0 : 1.0)
  93                     let upperAngle = angle - CGFloat.pi / 4.0
  94                     let lowerAngle = angle + CGFloat.pi / 4.0
  95
  96                     let offsetOrigin = CGPoint(x: edge.origin.x + multiplier * (VERTEX_SIZE.width / 2.0) * cos(angle), y: edge.origin.y + multiplier * (VERTEX_SIZE.height / 2.0) * sin(angle))
  97                     let offsetDestination = CGPoint(x: edge.destination.x - multiplier * (VERTEX_SIZE.width / 2.0) * cos(angle), y: edge.destination.y - multiplier * (VERTEX_SIZE.height / 2.0) * sin(angle))
  98
  99                         path.move(to: offsetOrigin)
 100                         path.addLine(to: offsetDestination)
 101
 102                     // Arrowheads
 103                         path.move(to: offsetDestination)
 104                     path.addLine(to: CGPoint(x: offsetDestination.x - multiplier * ARROWHEAD_SIZE * cos(upperAngle), y:
 105                                                 offsetDestination.y - multiplier * ARROWHEAD_SIZE * sin(upperAngle)))
 106
 107                     path.move(to: offsetDestination)
 108                     path.addLine(to: CGPoint(x: offsetDestination.x - multiplier * ARROWHEAD_SIZE * cos(lowerAngle), y:
 109                                                 offsetDestination.y - multiplier *  ARROWHEAD_SIZE * sin(lowerAngle)))
 110                     path.move(to: offsetDestination)
 111                         path.closeSubpath()
 112                 }.applying(CGAffineTransform(translationX: VERTEX_SIZE.width / 2.0, y: VERTEX_SIZE.height / 2.0)).strokedPath(StrokeStyle(lineWidth: LINE_WIDTH))
 113             }
 114         }.frame(
 115             minWidth: 1050.0, maxWidth: .infinity,
 116             minHeight: 1050.0, maxHeight: .infinity, alignment: .topLeading
 117         ).padding(30.0)
 118     }
 119 }
 120
 121 struct MapRenderView_Previews: PreviewProvider {
 122     static var previews: some View {
 123         MapDetailView(map: Map()).environment(\.managedObjectContext, PersistenceController.preview.container.viewContext)
 124     }
 125 }