git.r.bdr.sh / rbdr / map / blame
| Commit | Line | Data |
|---|---|---|
| 5e8ff485 RBR |
1 | // |
| 2 | // MapEdges.swift | |
| 3 | // Map | |
| 4 | // | |
| 5 | // Created by Ruben Beltran del Rio on 2/2/21. | |
| 6 | // | |
| 7 | ||
| 8 | import SwiftUI | |
| 9 | ||
| 10 | struct MapOpportunities: View { | |
| 11 | ||
| 12 | @Environment(\.colorScheme) var colorScheme | |
| 13 | ||
| 14 | let mapSize: CGSize | |
| 15 | let lineWidth: CGFloat | |
| 16 | let vertexSize: CGSize | |
| 17 | let opportunities: [Opportunity] | |
| 18 | ||
| 19 | let arrowheadSize = CGFloat(10.0) | |
| 20 | ||
| 21 | var color: Color { | |
| 22 | MapColor.colorForScheme(colorScheme).opportunity | |
| 23 | } | |
| 24 | ||
| 25 | var body: some View { | |
| 26 | ForEach(opportunities, id: \.id) { edge in | |
| 27 | Path { path in | |
| 28 | ||
| 29 | // First we transform edges from percentage to map coordinates | |
| 30 | let origin = CGPoint(x: w(edge.origin.x), y: h(edge.origin.y)) | |
| 31 | let destination = CGPoint(x: w(edge.destination.x), y: h(edge.destination.y)) | |
| 32 | ||
| 33 | let multiplier = CGFloat(edge.destination.x > edge.origin.x ? 1.0 : -1.0) | |
| 34 | let upperAngle = -CGFloat.pi / 4.0 | |
| 35 | let lowerAngle = CGFloat.pi / 4.0 | |
| 36 | ||
| 37 | let offsetOrigin = CGPoint(x: origin.x + multiplier * (vertexSize.width / 2.0), y: origin.y) | |
| 38 | let offsetDestination = CGPoint( | |
| 39 | x: destination.x - multiplier * (vertexSize.width / 2.0), y: destination.y) | |
| 40 | ||
| 41 | path.move(to: offsetOrigin) | |
| 42 | path.addLine(to: offsetDestination) | |
| 43 | ||
| 44 | path.move(to: offsetDestination) | |
| 45 | path.addLine( | |
| 46 | to: CGPoint( | |
| 47 | x: offsetDestination.x - multiplier * arrowheadSize * cos(upperAngle), | |
| 48 | y: | |
| 49 | offsetDestination.y - multiplier * arrowheadSize * sin(upperAngle))) | |
| 50 | ||
| 51 | path.move(to: offsetDestination) | |
| 52 | path.addLine( | |
| 53 | to: CGPoint( | |
| 54 | x: offsetDestination.x - multiplier * arrowheadSize * cos(lowerAngle), | |
| 55 | y: | |
| 56 | offsetDestination.y - multiplier * arrowheadSize * sin(lowerAngle))) | |
| 57 | ||
| 58 | path.move(to: offsetDestination) | |
| 59 | path.closeSubpath() | |
| 60 | }.applying( | |
| 61 | CGAffineTransform(translationX: vertexSize.width / 2.0, y: vertexSize.height / 2.0) | |
| 62 | ).strokedPath(StrokeStyle(lineWidth: lineWidth * 2, dash: [10.0])).stroke(color) | |
| 63 | } | |
| 64 | } | |
| 65 | ||
| 66 | func h(_ dimension: CGFloat) -> CGFloat { | |
| 67 | max(0.0, min(mapSize.height, dimension * mapSize.height / 100.0)) | |
| 68 | } | |
| 69 | ||
| 70 | func w(_ dimension: CGFloat) -> CGFloat { | |
| 71 | max(0.0, min(mapSize.width, dimension * mapSize.width / 100.0)) | |
| 72 | } | |
| 73 | } | |
| 74 | ||
| 75 | struct MapOpportunities_Previews: PreviewProvider { | |
| 76 | static var previews: some View { | |
| 77 | MapOpportunities( | |
| 78 | mapSize: CGSize(width: 400.0, height: 400.0), lineWidth: 1.0, | |
| 79 | vertexSize: CGSize(width: 25.0, height: 25.0), | |
| 80 | opportunities: [ | |
| 81 | Opportunity(id: 1, origin: CGPoint(x: 2.0, y: 34.0), destination: CGPoint(x: 23.0, y: 76.2)) | |
| 82 | ]) | |
| 83 | } | |
| 84 | } |