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

   1 import SwiftUI
   2
   3 struct MapVertices: View {
   4
   5   @Environment(\.colorScheme) var colorScheme
   6
   7   let mapSize: CGSize
   8   let vertexSize: CGSize
   9   let vertices: [Vertex]
  10   let padding = CGFloat(4.0)
  11
  12   var color: MapColor {
  13     MapColor.colorForScheme(colorScheme)
  14   }
  15
  16   var body: some View {
  17     ForEach(vertices, id: \.id) { vertex in
  18       Path { path in
  19         path.addEllipse(
  20           in: CGRect(
  21             origin: CGPoint(x: w(vertex.position.x), y: h(vertex.position.y)), size: vertexSize
  22           ))
  23       }.fill(color.foreground)
  24       Text(vertex.label).foregroundColor(color.secondary).offset(
  25         CGSize(
  26           width: w(vertex.position.x) + vertexSize.width + padding,
  27           height: h(vertex.position.y)))
  28     }
  29   }
  30
  31   func h(_ dimension: CGFloat) -> CGFloat {
  32     max(0.0, min(mapSize.height, dimension * mapSize.height / 100.0))
  33   }
  34
  35   func w(_ dimension: CGFloat) -> CGFloat {
  36     max(0.0, min(mapSize.width, dimension * mapSize.width / 100.0))
  37   }
  38 }
  39
  40 struct MapVertices_Previews: PreviewProvider {
  41   static var previews: some View {
  42     MapVertices(
  43       mapSize: CGSize(width: 400.0, height: 400.0), vertexSize: CGSize(width: 25.0, height: 25.0),
  44       vertices: [
  45         Vertex(id: 0, label: "A", position: CGPoint(x: 50.0, y: 50.0)),
  46         Vertex(id: 0, label: "A", position: CGPoint(x: 10.0, y: 20.0)),
  47       ])
  48   }
  49 }