In this article by Alex Ogorek , author of the book Mastering Cocos2d Game Development you'll be learning how to implement the really complex, subtle game mechanics that not many developers do. This is what separates the good games from the great games. There will be many examples, tutorials, and code snippets in this article intended for adaption in your own projects, so feel free to come back at any time to look at something you may have either missed the first time, or are just curious to know about in general. In this article, we will cover the following topics: Adding a table for scores Adding subtle sliding to the units Creating movements on a Bézier curve instead of straight paths
In this article by Samarth Shah , author of the book Learning Raspberry Pi ,we will take your Raspberry Pi to the real world. Make sure you have all the components listed for you to go ahead: Raspberry Pi with Raspbian OS. A keyboard/mouse. A monitor to display the content of Raspberry Pi. If you don't have Raspberry Pi, you can install the VNC server on Raspberry Pi, and on your laptop using the VNC viewer, you will be able to display the content. Hook up wires of different colors (keep around 30 wires of around 10 cm long). To do: Read instructions on how to cut the wires. An HD44780-based LCD. Note; I have used JHD162A. A breadboard. 10K potentiometer (optional). You will be using potentiometer to control the contrast of the LCD, so if you don't have potentiometer, contrast would be fixed and that would be okay for this project. Potentiometer is just a fancy word used for variable resistor. Basically, it is just a three-terminal resistor with sliding or rotating contact, which is used for changing the value of the resistor.
In this article by Munish Sethi , author of the book Jasmine Cookbook , we will see the implementation of Jasmine tests using spies.
One of the biggest features that draws developers to Ext JS is the vast array of UI widgets available out of the box. The ease with which they can be integrated with each other and the attractive and consistent visuals each of them offers is also a big attraction. No other framework can compete on this front, and this is a huge reason Ext JS leads the field of large-scale web applications. In this article by Stuart Ashworth and Andrew Duncan by authors of the book, Ext JS Essentials , we will look at how UI widgets fit into the framework's structure, how they interact with each other, and how we can retrieve and reference them. We will then delve under the surface and investigate the lifecycle of a component and the stages it will go through during the lifetime of an application.
In this article by Loiane Groner , author of the book Mastering Ext JS, Second Edition , we will start implementing the application's core features, starting with static data management. What exactly is this? Every application has information that is not directly related to the core business, but this information is used by the core business logic somehow. There are two types of data in every application: static data and dynamic data. For example, the types of categories, languages, cities, and countries can exist independently of the core business and can be used by the core business information as well; this is what we call static data because it does not change very often. And there is the dynamic data, which is the information that changes in the application, what we call core business data. Clients, orders, and sales would be examples of dynamic or core business data. We can treat this static information as though they are independent MySQL tables (since we are using MySQL as the database server), and we can perform all the actions we can do on a MySQL table.
Most systems using the Arduino have a similar architecture. They have a way of reading data from the environment—a sensor—they make decision using the code running inside the Arduino and then output those decisions to the environment using various actuators, such as a simple motor. Using three recipes from the book, Arduino Development Cookbook , by Cornel Amariei , we will build such a system, and quite a useful one—a fan controlled by the air temperature. Let's break the process into three key steps, the first and easiest will be to connect an LED to the Arduino, a few of them will act as a thermometer, displaying the room temperature. The second step will be to connect the sensor and program it, and the third will be to connect the motor. Here, we will learn this basic skills.
In this article by Angel Marquez author of the book PostGIS Essentials see how to insert GIS objects. Now is the time to fill our tables with data. It's very important to understand some of the theoretical concepts about spatial data before we can properly work with it. We will cover this concept through the real estate company example, used previously. Basically, we will insert two kinds of data: firstly, all the data that belongs to our own scope of interest. By this, I mean the spatial data that was generated by us (the positions of properties in the case of the example of the real estate company) for our specific problem, so as to save this data in a way that can be easily exploited. Secondly, we will import data of a more general use, which was provided by a third party. Another important feature that we will cover in this article are the spatial data files that we could use to share, import, and export spatial data within a standardized and popular format called shp or Shape files. In this article, we will cover the following topics: Developing insertion queries that include GIS objects Obtaining useful spatial data from a public third-party Filling our spatial tables with the help of spatial data files using a command line tool Filling our spatial tables with the help of spatial data files using a GUI tool provided by PostGIS
In this article by Denis Perevalov and Igor (Sodazot) Tatarnikov , authors of the book openFrameworks Essentials , we will investigate how to create a distributed project consisting of several programs working together and communicating with each other via networking.
This article is written by Joshua N. Milligan , the author of Learning Tableau . You are now ready to set out on a journey of building advanced visualizations! "Advanced" does not necessarily mean difficult. Tableau makes many of these visualizations easy to create. Advanced also does not necessarily mean complex. The goal is to communicate the data, not obscure it in needless complexity.
This article by Miko Coffey , the author of the book, Building Business Websites with Squarespace 7 , delves into the processes of adjusting images, adding content to sidebars or footers, and adding links.