The Thrill of the Tennis Davis Cup Qualifiers: International Edition
For tennis enthusiasts around the globe, the Davis Cup represents more than just a tournament; it's a showcase of national pride and raw talent. As we gear up for the latest round of Davis Cup Qualifiers on the international stage, anticipation is high. With fresh matches updated daily, fans are treated to a spectacle of skill and strategy, while expert betting predictions add an extra layer of excitement.
Daily Updates: Stay in the Loop
Keeping up with the fast-paced world of tennis can be challenging, but with our daily updates, you'll never miss a beat. Each day brings new matchups, unexpected twists, and thrilling victories. Whether you're tracking your favorite player or exploring new talents, our comprehensive coverage ensures you're always informed.
Expert Betting Predictions: Your Guide to Success
- Understanding Odds: Dive into the world of betting odds with our expert analysis. Learn how to interpret odds and make informed decisions to enhance your betting experience.
- Player Form and Performance: Discover insights into player form and recent performances. Our experts analyze past matches to predict future outcomes, giving you an edge in your betting strategies.
- Strategic Betting Tips: Get exclusive tips and strategies from seasoned bettors. Whether you're a novice or a seasoned pro, our advice can help you maximize your returns.
Spotlight on International Talent
The Davis Cup Qualifiers are a melting pot of international talent, featuring players from all corners of the globe. Here's a closer look at some standout performers and emerging stars:
- Rising Stars: Meet the next generation of tennis champions. From powerful serves to strategic gameplay, these young athletes are making their mark on the international stage.
- Veteran Veterans: Celebrate the seasoned players who continue to defy expectations. Their experience and resilience make them formidable opponents in every match.
- Cultural Diversity: Explore how different playing styles reflect cultural backgrounds. From aggressive baseline play to finesse on the court, diversity enriches the competition.
In-Depth Match Analysis
Each match is a unique narrative filled with drama and excitement. Our in-depth analysis covers every aspect of the game:
- Tactical Breakdowns: Understand the strategies employed by players and coaches. Learn how tactical decisions influence match outcomes and set the stage for thrilling comebacks.
- Moment-by-Moment Coverage: Follow live commentary that captures the intensity of each point. Experience the highs and lows as they happen, with expert insights that bring you closer to the action.
- Statistical Insights: Delve into detailed statistics that highlight key performance metrics. From first serve percentages to break points saved, data-driven insights provide a deeper understanding of each match.
The Role of Weather and Conditions
Tennis is not just about skill; environmental factors play a crucial role in shaping matches. Our coverage includes:
- Weather Impact: Analyze how weather conditions affect playstyles and outcomes. Whether it's wind or rain, adaptability is key to success on unpredictable courts.
- Court Surfaces: Explore how different surfaces influence player performance. From clay to grass to hard courts, each surface presents unique challenges and opportunities.
Community Engagement: Join the Conversation
The Davis Cup is more than just a tournament; it's a community of passionate fans. Engage with fellow enthusiasts through our interactive features:
- Forums and Discussions: Share your thoughts and predictions with other fans. Join lively discussions that celebrate the sport and its players.
- Social Media Integration: Stay connected with real-time updates on social media platforms. Follow hashtags and participate in trending conversations about your favorite matches.
A Look at Historical Context
The Davis Cup has a rich history that adds depth to every match. Explore significant moments from past tournaments that have shaped the competition:
- Milestones Achieved: Discover landmark achievements that have defined the tournament's legacy. From record-breaking wins to iconic upsets, history is made with every serve.
- Evolving Traditions: Learn about how traditions have evolved over time. From changes in format to advancements in technology, the Davis Cup continues to innovate while honoring its roots.
The Future of Tennis: Trends and Innovations
The world of tennis is constantly evolving, driven by trends and innovations that shape the future of the sport:
- Tech Advancements: Explore how technology enhances training and performance analysis. From wearable devices to AI-driven insights, tech is transforming how players prepare for competition.
- Sustainability Initiatives:oliver-zhang-yx/ARKit_Rider<|file_sep|>/ARKit_Rider/ARViewController.swift
//
// ARViewController.swift
// ARKit_Rider
//
// Created by Oliver Zhang on 2018/11/26.
// Copyright © 2018 Oliver Zhang. All rights reserved.
//
import UIKit
import ARKit
class ARViewController: UIViewController {
// MARK: - Outlets
@IBOutlet weak var sceneView: ARSCNView!
// MARK: - Properties
var sceneNode = SCNNode()
var lastLocation = CLLocation()
var lastBearing = Double()
var lastDistance = Double()
var currentLocation = CLLocation()
let locationManager = CLLocationManager()
let activityIndicator = UIActivityIndicatorView(style: .whiteLarge)
let blurEffectView = UIVisualEffectView(effect: UIBlurEffect(style: .light))
let cameraNode = SCNNode()
var cameraPosition = SCNVector3(0,-1,-2)
let screenCenter = CGPoint(x: UIScreen.main.bounds.midX,
y: UIScreen.main.bounds.midY)
let directionsIndicator = DirectionIndicator(size: CGSize(width: 200,
height: 200))
// MARK: - Lifecycle
override func viewDidLoad() {
super.viewDidLoad()
configureSceneView()
configureLocationManager()
configureCamera()
configureDirectionIndicator()
configureBlurEffectView()
configureActivityIndicater()
startUpdatingLocation()
startUpdatingHeading()
startUpdatingRegions()
addDirectionalIndicatorToScene()
// Add tap gesture recognizer.
let tapGesture = UITapGestureRecognizer(target: self,
action: #selector(handleTap(_:)))
sceneView.addGestureRecognizer(tapGesture)
}
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
let configuration = ARWorldTrackingConfiguration()
sceneView.session.run(configuration)
NotificationCenter.default.addObserver(self,
selector: #selector(applicationWillResignActive),
name: UIApplication.willResignActiveNotification,
object: nil)
}
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)
sceneView.session.pause()
NotificationCenter.default.removeObserver(self,
name: UIApplication.willResignActiveNotification,
object: nil)
}
// MARK: - Configure View
private func configureSceneView() {
sceneView.delegate = self
sceneView.showsStatistics = true
sceneView.debugOptions = [.showFeaturePoints]
}
private func configureLocationManager() {
locationManager.delegate = self
locationManager.desiredAccuracy = kCLLocationAccuracyBest
}
private func configureCamera() {
cameraNode.camera = SCNCamera()
cameraNode.position = cameraPosition
// SCNVector3(0,-1,-2)
// SCNVector3(0,-1,-0.5)
// SCNVector3(0,-1,-1)
// SCNVector3(0,-1,-2)
// SCNVector3(0,-1,-4)
// SCNVector3(0,-1,-8)
// SCNVector3(0,-1,-16)
// SCNVector3(0,-1,-32)
//
// SCNVector3(0,-4,-32)
// SCNVector3Make(-30, -10, -30)
// SCNVector3Make(-15, -10, -15)
// SCNVector3Make(-5, -10, -5)
// SCNVector3Make(-50, -50 , -50)
// SCNVector3Make(-20 ,-20 , -20)
// SCNVector3Make(-100 ,-100 , -100)
// SCNVector3Make(-5 ,-5 , -5)
// SCNVector3Make(-10 ,-10 , -10)
sceneNode.addChildNode(cameraNode)
sceneView.pointOfView = cameraNode
}
private func configureDirectionIndicator() {
directionsIndicator.layer.cornerRadius = directionsIndicator.frame.size.width / 2
directionsIndicator.clipsToBounds = true
view.addSubview(directionsIndicator)
directionsIndicator.translatesAutoresizingMaskIntoConstraints = false
NSLayoutConstraint.activate([
directionsIndicator.centerXAnchor.constraint(equalToSystemSpacingAfter:
view.safeAreaLayoutGuide.centerXAnchor,
multiplier:
UIScreen.main.scale),
directionsIndicator.centerYAnchor.constraint(equalToSystemSpacingBelow:
view.safeAreaLayoutGuide.centerYAnchor,
multiplier:
UIScreen.main.scale),
directionsIndicator.widthAnchor.constraint(equalToConstant:
directionsIndicator.frame.size.width),
directionsIndicator.heightAnchor.constraint(equalToConstant:
directionsIndicator.frame.size.height),
])
// constraints for iPad
//
// NSLayoutConstraint.activate([
//
//// directionsIndicator.centerXAnchor.constraint(equalToSystemSpacingAfter:
//// view.safeAreaLayoutGuide.centerXAnchor,
//// multiplier:
//// UIScreen.main.scale),
////
//// directionsIndicator.centerYAnchor.constraint(equalToSystemSpacingBelow:
//// view.safeAreaLayoutGuide.centerYAnchor,
//// multiplier:
//// UIScreen.main.scale),
//
//// directionsIndicator.widthAnchor.constraint(equalToConstant:
//// directionsIndicator.frame.size.width),
////
//// directionsIndicator.heightAnchor.constraint(equalToConstant:
//// directionsIndicator.frame.size.height),
//
// directionsIndicator.centerXAnchor.constraint(equalTo:
// view.safeAreaLayoutGuide.centerXAnchor),
//
// directionsIndicator.centerYAnchor.constraint(equalTo:
// view.safeAreaLayoutGuide.centerYAnchor),
//
//
//// directionsIndicator.widthAnchor.constraint(equalToConstant:
//// UIScreen.main.bounds.width / CGFloat(6)),
////
//// directionsIndicator.heightAnchor.constraint(equalToConstant:
//// UIScreen.main.bounds.height / CGFloat(6)),
//
//
//
//
//
//
//
//
////
//// directionsIndicator.leadingAnchor.constraint(equalToSystemSpacingAfter:
//// view.leadingAnchor,
//// multiplier:
//// UIScreen.main.scale),
////
//// directionsIndicator.trailingAnchor.constraint(equalToSystemSpacingBefore:
//// view.trailingAnchor,
//// multiplier:
//// UIScreen.main.scale),
////
//// directionsIndicator.topAnchor.constraint(equalToSystemSpacingBelow:
//// view.topAnchor,
//// multiplier:
//// UIScreen.main.scale),
////
//// directionsIndicator.bottomAnchor.constraint(equalToSystemSpacingAbove:
//// view.bottomAnchor,
//// multiplier:
//// UIScreen.main.scale),
//
// ])
// constraints for iPhone
}
private func configureBlurEffectView() {
blurEffectView.alpha = 0
blurEffectView.frame = view.bounds
blurEffectView.autoresizingMask =
[.flexibleWidth,.flexibleHeight]
blurEffectView.isHidden = true
view.addSubview(blurEffectView)
}
private func configureActivityIndicater() {
activityIndicator.center =
CGPoint(x:view.bounds.midX,y:view.bounds.midY+20)
activityIndicator.color =
UIColor(red:.9,.9,.9,alpha:.9)
view.addSubview(activityIndicator)
}
private func addDirectionalIndicatorToScene() {
let indicatorGeometry =
SCNSphere(radius:.1)
indicatorGeometry.firstMaterial?.diffuse.contents =
UIColor.green
indicatorGeometry.firstMaterial?.isDoubleSided =
true
let indicatorNode =
SCNNode(geometry : indicatorGeometry)
indicatorNode.name =
"directional_indicator"
indicatorNode.position =
SCNVector3(x:.2,y:.2,z:.2)
sceneNode.addChildNode(indicatorNode)
}
private func addPathToScene(path : [CLLocation]) {
let pathArray =
path.map{ $0.coordinate }
let pathCoordinates =
pathArray.map { CLLocationCoordinate2D(latitude:$0.latitude,
longitude:$0.longitude) }
let pathRegion =
MKCoordinateRegion(center:pathCoordinates[0],
span:(MKCoordinateSpan(latitudeDelta:.01,
longitudeDelta:.01)))
let mapLayer =
MKMapRectWorld
let options : [MKOverlayRenderer.OptionsKey:Any] =
[.mapRect : mapLayer]
let polylinePath =
MKPolyline(coordinates:pathCoordinates,count:pathCoordinates.count)
let renderer =
MKPolylineRenderer(polyline :polylinePath,options : options )
renderer.fillColor =
UIColor.blue.withAlphaComponent(.25).cgColor
renderer.strokeColor =
UIColor.blue.cgColor
renderer.lineWidth =
.5
DispatchQueue.main.async {
self.sceneView.overlayRenderer(renderer ,
forOverlay : polylinePath).insertSubnode(
renderer.node)
}
}
private func addCurrentLocationToScene(location :
CLLocation) {
let annotationGeometry =
SCNSphere(radius:.05)
annotationGeometry.firstMaterial?.diffuse.contents =
UIColor.red
annotationGeometry.firstMaterial?.isDoubleSided =
true
let annotationNode =
SCNNode(geometry : annotationGeometry)
annotationNode.name =
"current_location"
let coordinateTransformMatrix =
sceneKitMatrixFromCoreLocationMatrix(location.coordinate.transform)
annotationNode.transform.m34 = -.001
annotationNode.simdTransform =
coordinateTransformMatrix * annotationNode.simdTransform
sceneNode.addChildNode(annotationNode)
}
func addDestinationToScene(location : CLLocation) {
let destinationGeometry =
SCNSphere(radius:.05)
destinationGeometry.firstMaterial?.diffuse.contents =
UIColor.yellow
destinationGeometry.firstMaterial?.isDoubleSided =
true
let destinationNode =
SCNNode(geometry : destinationGeometry)
destinationNode.name =
"destination"
let coordinateTransformMatrix =
sceneKitMatrixFromCoreLocationMatrix(location.coordinate.transform)
destinationNode.transform.m34 = -.001
destinationNode.simdTransform =
coordinateTransformMatrix * destinationNode.simdTransform
sceneNode.addChildNode(destinationNode)
}
private func removeNodesFromScene() {
sceneView.scene.rootNode.enumerateChildNodes({ (node , _) in
if node.name == "directional_indicator" ||
node.name == "current_location" ||
node.name == "destination" {
node.removeFromParentNode()
}
})
}
private func getCoordinateTransformMatrix(coordinate :
CLLocationCoordinate2D) -> matrix_float4x4 {
let latitudeRadians :
Double =
coordinate.latitude.degreesToRadians
let longitudeRadians :
Double =
coordinate.longitude.degreesToRadians
return matrix_float4x4(
cos(latitudeRadians)*cos(longitudeRadians),
cos(latitudeRadians)*sin(longitudeRadians),
sin(latitudeRadians),
0,
-sin(longitudeRadians),
cos(longitudeRadians),
0,
0,
-sin(latitudeRadians)*cos(longitudeRadians),
-sin(latitudeRadians)*sin(longitudeRadians),
cos(latitudeRadians),
0,
0,
0,
0,
1
)
}
private func sceneKitMatrixFromCoreLocationMatrix(_ matrix :
CLLocationCoordinate2DTransform) -> matrix_float4x4 {
var transformMatrix =
matrix_float4x4(
matrix.m11,matrix.m12,matrix.m13,matrix.m14,
matrix.m21,matrix.m22,matrix.m23,matrix.m24,
matrix.m31,matrix.m32,matrix.m33,matrix.m34,
matrix.m41,matrix.m42,matrix.m43,matrix.m44
)
transformMatrix.columns[2] =
transformMatrix.columns[2].normalized
return transformMatrix
}
private func degreesToRadians(_ degrees : Double) -> Double {
return degrees * .pi /180
}
private func radiansToDegrees(_ radians : Double) -> Double {
return radians *180/.pi
}
private func startUpdatingHeading() {
locationManager.startUpdatingHeading()
}
private func startUpdatingLocation() {
locationManager.startUpdatingLocation()
}
private func startUpdatingRegions() {
locationManager.startMonitoringSignificantLocationChanges()
}
@objc private func applicationWillResignActive() {
stopUpdatingHeading()
stopUpdatingLocation()
stopUpdatingRegions()
}
private func stopUpdatingHeading() {
locationManager.stopUpdatingHeading()
}
private func stopUpdatingLocation() {
locationManager.stopUpdatingLocation()
}
private func stopUpdatingRegions() {
locationManager.stopMonitoringSignificantLocationChanges()
}
@objc private func handleTap(_ gestureRecogniser :
UITapGestureRecognizer) {
if gestureRecogniser.state != .ended {
return
}
guard gestureRecogniser.view != nil else { return }
let touchPoint = gestureRecogniser.location(in:
sceneView.hitTest(touchPoint , types :
.ARHitTestResult.ResultType.featurePoint).first
)?.worldTransform
guard touchPoint != nil else { return }
let touchPosition =
SCNVector3Make(touchPoint!.columns[3].x,
touchPoint!.columns[3].y,
touchPoint!.columns[3].z)
cameraPosition.x += touchPosition.x-cameraPosition.x
cameraPosition.y += touchPosition.y-cameraPosition.y
cameraPosition.z += touchPosition.z-cameraPosition.z
cameraPosition.x /= .25
cameraPosition.y /= .25
cameraPosition.z /= .25
cameraPosition.y += .5
cameraPosition.z -= .5
cameraNode.position =
cameraPosition
}
override var prefersStatusBarHidden : Bool {
return true
}
override var supportedInterfaceOrientations : UIInterfaceOrientationMask{
return .portrait
}
}
extension ARViewController :
CLLocationManagerDelegate {
func locationManager(_ manager :
CLLocationManager , didChangeAuthorization status :
CLAuthorizationStatus