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Swift

Blueprints

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Paperback: 276 pages Publisher: Packt Publishing - ebooks Account (October 27, 2015) Language: English ISBN-10: 1783980761 ISBN-13: 978-1783980765 Sharpen your skills in Swift by designing and deploying seven fully functional applications About This Book Develop a variety of iOS-compatible applications that range from health and fitness to utilities using this project-based handbook Discover ways to make the best use of the latest features in Swift to build on a wide array of applications Follow step-by-step instructions to create Swift apps oriented for the real world Who This Book Is For If you are a competent iOS developer who wants to develop stunning applications with Swift, then this book is for you. Familiarity with Swift programming is assumed. What You Will Learn Get to grips with the basics of Xcode and Swift for application development Create a Photo Sharing application to capture an image, edit it using different features and share it via social media. Develop applications using the WatchKit and exchange data between iPhone and the Watch Use advanced features such as SpriteKit to build a game Install third-party Swift frameworks to improvise on your application development Discover how to simulate home automation with HomeKit Build an application to monitor the user's weight, heart rate and the number of steps for Health Historic Analysis Manipulate media using AVFoundation framework to merge audio and video.

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Swift 2 Blueprints

Sharpen your skills in Swift by designing and deploying

seven fully-functional applications

Cecil Costa

BIRMINGHAM - MUMBAI

Swift 2 Blueprints

system, or transmitted in any form or by any means, without the prior written

permission of the publisher, except in the case of brief quotations embedded in

critical articles or reviews.

Every effort has been made in the preparation of this book to ensure the accuracy

of the information presented. However, the information contained in this book is

sold without warranty, either express or implied. Neither the author, nor Packt

Publishing, and its dealers and distributors will be held liable for any damages

caused or alleged to be caused directly or indirectly by this book.

Packt Publishing has endeavored to provide trademark information about all of the

companies and products mentioned in this book by the appropriate use of capitals.

However, Packt Publishing cannot guarantee the accuracy of this information.

First published: October 2015

Production reference: 1211015

Published by Packt Publishing Ltd.

Livery Place

35 Livery Street

Birmingham B3 2PB, UK.

ISBN 978-1-78398-076-5

www.packtpub.com

Credits

Author

Cecil Costa

Reviewers

Eugene Mozharovsky

Alexey Smirnov

Jak Tiano

Commissioning Editor

Dipika Gaonkar

Acquisition Editors

Larissa Pinto

Sam Wood

Content Development Editor

Zeeyan Pinheiro

Technical Editor

Shivani Kiran Mistry

Copy Editor

Akshata Lobo

Project Coordinator

Suzanne Coutinho

Proofreader

Sas Editing

Indexer

Monica Ajmera Mehta

Graphics

Disha Haria

Production Coordinator

Arvindkumar Gupta

Cover Work

Arvindkumar Gupta

About the Author

Cecil Costa, also known as Eduardo Campos in Latin countries, is a Euro-Brazilian

freelance developer who has been learning about computers since he got his rst PC

(an AT 286) in 1990. From then on, he kept learning about programming languages,

computer architecture, and computer science theory.

Learning and teaching are his passions; this is the reason why he worked as a

trainer and an author. He has been giving on-site courses for companies such as

Ericsson, Roche, TVE (a Spanish television channel), and a lot of other companies.

He is also the author of Swift Cookbook and soon he will also write a book called

Reactive Swift Programming.

Nowadays, he teaches through online platforms, helping people from every part of

the world.

In 2008, he founded his own company, Conglomo Limited (

http://www.conglomo.es/

which offers development and training programs both on site and online.

Over his professional career, he has created projects by himself and also worked

for different companies, from small to big ones, such as IBM, Qualcomm, Spanish

Lottery, and DIA%.

He develops a variety of computer languages (such as Swift, C++, Java, Objective-C,

JavaScript, Python, and so on) in different environments (iOS, Android, Web, Mac

OS X, Linux, Unity, and so on) because he thinks that a good developer needs to

learn every kind of programming language to open his mind, and only then will he

really know what development is.

Nowadays, Cecil is based in the UK, where he is progressing in his professional

career, working with augmented reality on mobile platforms.

I would like to thank Mr Robert William Bemer for creating the

escape key and my son Gabriel Campos Oliveira for bringing

happiness to my life.

剩余275页未读，继续阅读

花花小Boy

2016-07-05

是原版PDF,很清晰！

解释这段代码 if args.safe: blueprints = [x for x in blueprints if int(x.get_attribute('number_of_wheels')) == 4] blueprints = [x for x in blueprints if not x.id.endswith('isetta')] blueprints = [x for x in blueprints if not x.id.endswith('carlacola')] blueprints = [x for x in blueprints if not x.id.endswith('cybertruck')] blueprints = [x for x in blueprints if not x.id.endswith('t2')]

2. 通过`endswith()`方法，筛选掉车辆蓝图ID以'isetta'、'carlacola'、'cybertruck'、't2'结尾的蓝图对象，因为这些车辆蓝图可能不符合安全标准。最终，`blueprints`列表中只留下符合安全标准的车辆蓝图。

解释这段代码blueprints = sorted(blueprints, key=lambda bp: bp.id)

在这里，`blueprints`列表即为可迭代对象，`key`参数为排序的关键字，`lambda bp: bp.id`表示按照每个蓝图对象的ID属性进行排序，即按照字母顺序对蓝图进行排序。最终，`blueprints`列表按照蓝图ID属性进行了排序...

解释这段代码代码 if args.safe: blueprints = [x for x in blueprints if int(x.get_attribute('number_of_wheels')) == 4] blueprints = [x for x in blueprints if not x.id.endswith('isetta')] blueprints = [x for x in blueprints if not x.id.endswith('carlacola')] blueprints = [x for x in blueprints if not x.id.endswith('cybertruck')] blueprints = [x for x in blueprints if not x.id.endswith('t2')] blueprints = sorted(blueprints, key=lambda bp: bp.id) spawn_points = world.get_map().get_spawn_points() number_of_spawn_points = len(spawn_points)

这段代码主要是根据命令行参数(args)中的设置来过滤车辆蓝图，只选择安全的车辆蓝图。首先，`if args.safe:` 判断是否只选择安全的车辆蓝图。如果是，代码将对所有车辆蓝图进行过滤，只选择车轮数为4的车辆，而且...

[AssetLog] D:\HX0201\Content\Blueprints\BP\Socket.uasset

[AssetLog] D:\HX0201\Content\Blueprints\BP\Socket.uasset 是一个文件路径，指向一个名为 Socket 的蓝图类的资源文件。蓝图是一种在虚幻引擎中用于创建游戏逻辑和交互的可视化编程工具。Socket 蓝图可能包含了一些...

请帮我将这段代码改为设置8个固定的NPC代码，并加入设置每个NPC的速度和加速度以及行驶路线的代码# Spawn vehicles # -------------- batch = [] for n, transform in enumerate(spawn_points): print('n',n) print('transform',transform) if n >= args.number_of_vehicles: break blueprint = random.choice(blueprints) print('blueprints的长度', len(blueprints)) print('blueprints',blueprints) print('blueprint', blueprint) if blueprint.has_attribute('color'): color = random.choice(blueprint.get_attribute('color').recommended_values) blueprint.set_attribute('color', color) if blueprint.has_attribute('driver_id'): driver_id = random.choice(blueprint.get_attribute('driver_id').recommended_values) blueprint.set_attribute('driver_id', driver_id) blueprint.set_attribute('role_name', 'autopilot') # prepare the light state of the cars to spawn light_state = vls.NONE if args.car_lights_on: light_state = vls.Position | vls.LowBeam | vls.LowBeam # spawn the cars and set their autopilot and light state all together batch.append(SpawnActor(blueprint, transform) .then(SetAutopilot(FutureActor, True, traffic_manager.get_port())) .then(SetVehicleLightState(FutureActor, light_state))) for response in client.apply_batch_sync(batch, synchronous_master): if response.error: logging.error(response.error) else: vehicles_list.append(response.actor_id)

npc_waypoints = [[-100, -100, 0], [0, -100, 0], [100, -100, 0], [100, 0, 0], [100, 100, 0], [0, 100, 0], [-100, 100, 0], [-100, 0, 0]] for i in range(8): blueprint = world.get_blueprint_library()....

tkinter gui application development blueprints second

《tkinter GUI应用程序开发蓝图第二版》是一本关于tkinter库在Python中进行GUI应用程序开发的书籍。在这本书中，作者从基本的概念入手，引导读者逐步掌握tkinter库的使用。这本书提供了详细的教程和示例，介绍了...

sfml blueprints

SFML蓝图是一本关于SFML库的书籍。SFML是一个简单易用的多媒体库，用于开发跨平台的图形、音频和输入应用程序。而SFML蓝图是为了帮助开发者使用SFML库来构建不同类型的应用程序而编写的。这本书提供了一系列的项目...

请帮我将这段代码改为设置4个固定的NPC代码# Spawn vehicles # -------------- batch = [] for n, transform in enumerate(spawn_points): print('n',n) print('transform',transform) if n >= args.number_of_vehicles: break blueprint = random.choice(blueprints) print('blueprints的长度', len(blueprints)) print('blueprints',blueprints) print('blueprint', blueprint) if blueprint.has_attribute('color'): color = random.choice(blueprint.get_attribute('color').recommended_values) blueprint.set_attribute('color', color) if blueprint.has_attribute('driver_id'): driver_id = random.choice(blueprint.get_attribute('driver_id').recommended_values) blueprint.set_attribute('driver_id', driver_id) blueprint.set_attribute('role_name', 'autopilot') # prepare the light state of the cars to spawn light_state = vls.NONE if args.car_lights_on: light_state = vls.Position | vls.LowBeam | vls.LowBeam # spawn the cars and set their autopilot and light state all together batch.append(SpawnActor(blueprint, transform) .then(SetAutopilot(FutureActor, True, traffic_manager.get_port())) .then(SetVehicleLightState(FutureActor, light_state))) for response in client.apply_batch_sync(batch, synchronous_master): if response.error: logging.error(response.error) else: vehicles_list.append(response.actor_id)

blueprint = random.choice(blueprints) if blueprint.has_attribute('color'): color = random.choice(blueprint.get_attribute('color').recommended_values) blueprint.set_attribute('color', color) if ...

这段代码 def generate_npc(): blueprint = world.get_blueprint_library().find(npc_blueprints[i]) color = random.choice(blueprint.get_attribute('color').recommended_values) blueprint.set_attribute('color', color) # if blueprint.has_attribute('driver_id'): # driver_id = random.choice(blueprint.get_attribute('driver_id').recommended_values) # blueprint.set_attribute('driver_id', driver_id) blueprint.set_attribute('role_name', 'autopilot') start_point =carla.Location(x=npc_startpoints[i][0], y=npc_startpoints[i][1], z=npc_startpoints[i][2]) end_point = carla.Location(x=npc_endpoints[i][0], y=npc_endpoints[i][1], z=npc_endpoints[i][2]) transform = carla.Transform(start_point, carla.Rotation(yaw=0)) #0和180分别代表绕Z轴的偏航角度。在 carla.Rotation() 中，参数 yaw 表示偏航角度，即车辆或物体相对于地图坐标系（东北天）的旋转角度，以度为单位。0度表示车辆或物体朝向东方，180度表示车辆或物体朝向西方。 target_location = carla.Transform(end_point, carla.Rotation(yaw=180)) # 创建目标Transform对象 # print('aaaaa') #--- NPC =world.spawn_actor(blueprint, transform) #已生成车辆 NPC.set_autopilot(True) NPC.apply_control(carla.VehicleControl(throttle=1.0, steer=0.0, brake=0.0, hand_brake=False, reverse=False, manual_gear_shift=False, gear=0)) # 设置Vehicle的位置和朝向 NPC.set_transform(target_location) return NPC global NPC NPC = generate_npc() global blueprint global transform def reset_npc(): NPC.destroy() NPC=generate_npc()报错 ^ SyntaxError: name 'NPC' is assigned to before global declaration

start_point = carla.Location(x=npc_startpoints[i][0], y=npc_startpoints[i][1], z=npc_startpoints[i][2]) end_point = carla.Location(x=npc_endpoints[i][0], y=npc_endpoints[i][1], z=npc_endpoints[i][2]...

解释这段代码blueprints = world.get_blueprint_library().filter(args.filterv) blueprintsWalkers = world.get_blueprint_library().filter(args.filterw)

这段代码是在使用CARLA自动驾驶仿真环境时，用来获取可用蓝图的函数。其中`world`变量是CARLA仿真环境的世界对象，`get_blueprint_library...最终，`blueprints`和`blueprintsWalkers`分别是可用的车辆和行人蓝图列表。

解释这段代码 if args.sync: settings = world.get_settings() traffic_manager.set_synchronous_mode(True) if not settings.synchronous_mode: synchronous_master = True settings.synchronous_mode = True settings.fixed_delta_seconds = 0.05 world.apply_settings(settings) else: synchronous_master = False blueprints = world.get_blueprint_library().filter(args.filterv) blueprintsWalkers = world.get_blueprint_library().filter(args.filterw)

接下来的代码，`blueprints = world.get_blueprint_library().filter(args.filterv)`和`blueprintsWalkers = world.get_blueprint_library().filter(args.filterw)`，获取了所有符合车辆蓝图过滤器(args.filterv)和...

UE4打开外部exe程序

可以使用UE4中的Blueprints来打开外部的exe程序。下面是一个简单的实现步骤： 1. 在UE4的Blueprints中创建一个Button或者其他触发器。 2. 在Button的事件中添加一个"Execute Console Command"节点。 3. 在这个...

请帮我说明这段代码并未成功创建出8个npc车辆的原因 batch = [] npc_blueprints = ["vehicle.nissan.micra", "vehicle.audi.a2", "vehicle.tesla.model3", "vehicle.bmw.grandtourer", "vehicle.toyota.prius", "vehicle.nissan.patrol", "vehicle.audi.etron", "vehicle.toyota.prius"] npc_speeds = [20, 25, 30, 35, 40, 35, 30, 20] # in km/h npc_accelerations = [1.0, 1.5, 2.0, 2, 2.0, 1.5, 1.0, 1.5] # in m/s^2 npc_waypoints = [[-8871.099609, -11956.523438, 27.530716], [-8504.081055, -5407.712402, 27.530716], [6426.287598, 741.497681, 45.0], [10597.994141, -339.751038, 27.530716], [9715.866211, 430.881317, 27.530716], [17607.03125, -240.132263, 27.530716], [20708.113281, -518.995544, 27.531448], [24519.421875, 2809.513916, 27.530716]] for i in range(8): blueprint = world.get_blueprint_library().find(npc_blueprints[i]) color = random.choice(blueprint.get_attribute('color').recommended_values) blueprint.set_attribute('color', color) if blueprint.has_attribute('driver_id'): driver_id = random.choice(blueprint.get_attribute('driver_id').recommended_values) blueprint.set_attribute('driver_id', driver_id) blueprint.set_attribute('role_name', 'autopilot') transform = carla.Transform( carla.Location(x=npc_waypoints[i][0], y=npc_waypoints[i][1], z=npc_waypoints[i][2]), carla.Rotation(yaw=0)) print('aaaaa') # prepare the light state of the cars to spawn light_state = vls.NONE if args.car_lights_on: light_state = vls.Position | vls.LowBeam | vls.LowBeam # spawn the cars and set their autopilot and light state all together batch.append(SpawnActor(blueprint, transform) .then(SetAutopilot(FutureActor, True, traffic_manager.get_port())) .then(SetVehicleLightState(FutureActor, light_state))) for response in client.apply_batch_sync(batch, synchronous_master): if response.error: logging.error(response.error) else: vehicles_list.append(response.actor_id) print("*****************************************") for vehicle_id in vehicles_list: print('vehicles_list',vehicles_list) print('vehicle_id',vehicle_id) print(world.get_actor(vehicle_id)) print(world.get_actor(vehicle_id).get_location()) print("")

您提供的代码中，创建车辆的部分看起来是正确的。但是，我注意到您在循环中使用了未定义的变量 `FutureActor`，这可能导致错误。我建议您将 `FutureActor` 替换为 `response.actor_id`，以便在下一步操作中使用正确...

for k in range(5): # 在这里写上循环体的代码 for i in range(1): blueprint = world.get_blueprint_library().find(npc_blueprints[i]) color = random.choice(blueprint.get_attribute('color').recommended_values) blueprint.set_attribute('color', color) # if blueprint.has_attribute('driver_id'): # driver_id = random.choice(blueprint.get_attribute('driver_id').recommended_values) # blueprint.set_attribute('driver_id', driver_id) blueprint.set_attribute('role_name', 'autopilot') start_point = carla.Location(x=npc_startpoints[i][0], y=npc_startpoints[i][1], z=npc_startpoints[i][2]) end_point = carla.Location(x=npc_endpoints[i][0], y=npc_endpoints[i][1], z=npc_endpoints[i][2]) transform = carla.Transform(start_point, carla.Rotation( yaw=0)) # 0和180分别代表绕Z轴的偏航角度。在 carla.Rotation() 中，参数 yaw 表示偏航角度，即车辆或物体相对于地图坐标系（东北天）的旋转角度，以度为单位。0度表示车辆或物体朝向东方，180度表示车辆或物体朝向西方。 target_location = carla.Transform(end_point, carla.Rotation(yaw=180)) # 创建目标Transform对象 print('aaaaa') # prepare the light state of the cars to spawn light_state = vls.NONE if args.car_lights_on: light_state = vls.Position | vls.LowBeam | vls.LowBeam NPC = world.spawn_actor(blueprint, transform) # 已生成车辆 NPC.set_autopilot(True) NPC.apply_control(carla.VehicleControl(throttle=1.0, steer=0.0, brake=0.0, hand_brake=False, reverse=False, manual_gear_shift=False, gear=0)) # 设置Vehicle的位置和朝向 NPC.set_transform(target_location) while NPC.get_location().distance(end_point) > 2.0: time.sleep(0.1) # 销毁车辆 NPC.destroy()报错Process finished with exit code -1073740791 (0xC0000409)

你贴上来的代码中存在多层循环嵌套，但缺少了父循环的定义，导致程序无法正常运行。你需要在 while True 或 for 循环外部套上一个 for 循环，来控制外部循环的次数，如： ``` for j in range(100): # 外层循环，...

Traceback (most recent call last): File "C:\Users\X\Desktop\2023夏\Supplement-shop-main\backend\blueprints\address_bp.py", line 3, in <module> from config import db ImportError: cannot import name 'db' from 'config' (D:\pycharm\anaconda3.6\lib\site-packages\config\init.py)

2. "db"可能被定义在了其他地方，而不是在"config"模块中。请检查你的代码，确认"db"确实在"config"模块中定义。 3. 可能存在名称冲突。请确保你没有使用与标准库或其他第三方库冲突的名称。 4. 可能是因为路径问题...

ue4用什么语言编写代码

2. 蓝图（Blueprints）：蓝图是一种基于图形化编程的方式，可以让非程序员也能够创建游戏逻辑和交互。使用蓝图，开发者可以在UE4编辑器中将各种功能块（节点）拖拽连接起来，形成游戏的逻辑流程。蓝图提供了大量的...

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blueprints-neo4j2-graph 下载

解释这段代码blueprints = sorted(blueprints, key=lambda bp: bp.id)

[AssetLog] D:\HX0201\Content\Blueprints\BP\Socket.uasset

tkinter gui application development blueprints second

sfml blueprints

解释这段代码blueprints = world.get_blueprint_library().filter(args.filterv) blueprintsWalkers = world.get_blueprint_library().filter(args.filterw)

UE4打开外部exe程序

Traceback (most recent call last): File "C:\Users\X\Desktop\2023夏\Supplement-shop-main\backend\blueprints\address_bp.py", line 3, in <module> from config import db ImportError: cannot import name 'db' from 'config' (D:\pycharm\anaconda3.6\lib\site-packages\config\__init__.py)

ue4用什么语言编写代码

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Traceback (most recent call last): File "C:\Users\X\Desktop\2023夏\Supplement-shop-main\backend\blueprints\address_bp.py", line 3, in <module> from config import db ImportError: cannot import name 'db' from 'config' (D:\pycharm\anaconda3.6\lib\site-packages\config\init.py)