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A print job is a request of printing something in a specific print service. It consists, basically, by: the data that will be printed (see Building the Doc that will be printed) a set of attributes After picking-up the right print service instance, we can request the creation of a print job...

Doc is an interface and the Java Print Service API provide a simple implementation called SimpleDoc. Every Doc instance is basically made of two aspects: the print data content itself (an E-mail, an image, a document etc) the print data format, called DocFlavor (MIME type + Representation class...

If we are given with the two strings we have to find the longest common sub-sequence present in both of them. Example LCS for input Sequences “ABCDGH” and “AEDFHR” is “ADH” of length 3. LCS for input Sequences “AGGTAB” and “GXTXAYB” is “GTAB” of length 4. Implementation in Java public class LC...

Bottom up approach for printing the nth Fibonacci number using Dynamic Programming. Recursive Tree fib(5) / \ fib(4) fib(3) / \ / \ fib(3) fib(2...

Given 2 string str1 and str2 we have to find the length of the longest common substring between them. Examples Input : X = "abcdxyz", y = "xyzabcd" Output : 4 The longest common substring is "abcd" and is of length 4. Input : X = "zxabcdezy", y = "y...

For example, we can create a ring-shaped cursor fixed to the center of the screen. To fix the cursor to the screen so the cursor is always present no matter where we look, we place it as a child of the active camera entity. We pull it in front of the camera by placing it on the negative Z axis. When...

We’ll first go over gaze-based interactions. Gaze-based interactions rely on rotating our heads and looking at objects to interact with them. This type of interaction is for headsets without a controller. Even with a rotation-only controller (Daydream, GearVR), the interaction is still similar. Sinc...

The cursor primitive is a reticle that allows for clicking and basic interactivity with a scene on devices that do not have a hand controller. The default appearance is a ring geometry. The cursor is usually placed as a child of the camera. <a-scene> <a-camera> <a-cursor>&...

Also known as gaze-based cursor. If we set the cursor to be fuse-based, the cursor will trigger a click if the user gazes at an entity for a set amount of time. Imagine a laser strapped to the user’s head, and the laser extends out into the scene. If the user stares at an entity long enough (i.e., t...

The cursor builds on top of and depends on the raycaster component. If we want to customize the raycasting pieces of the cursor, we can do by changing the raycaster component properties. Say we want set a max distance, check for intersections less frequently, and set which objects are clickable: &l...

Adding 3DoF Controllers Controllers with 3 degrees of freedom (3DoF) are limited to rotational tracking. 3DoF controllers have no positional tracking meaning we can’t reach out nor move our hand back-and-forth or up-and-down. Having a controller with only 3DoF is like having a hand and wrist withou...

To fix entities onto the camera such that they stay within view no matter where the user looks, you can attach those entities as a child of the camera. Use cases might be a heads-up display (HUD). <a-entity camera look-controls> <a-entity geometry="primitive: plane; height: 0.2; wi...

To position the camera, set the position on a wrapper . Don’t set the position directly on the camera primitive because controls will quickly override the set position: <a-entity position="0 0 5"> <a-camera></a-camera> </a-entity>

A convenient way to package your application is to write the scripts in your packages.json file and run them with the npm run command { "name": "AppName", "productName": "AppName", "version": "0.1.1", "main": ...

The recommended way is to write a component, and attach it to the scene element. The scene and its children will be initialized before this component. AFRAME.registerComponent('do-something', { init: function () { var sceneEl = this.el; } }); <a-scene do-something></a-scene...

Mouse controls are only supported outside the VR modus and could be use for games without a HMD. For more information about mouse controls, you could find in the mouse cursor example. <a-scene> <a-entity camera look-controls mouse-cursor> </a-scene>

Note: For this example you need to add an external npm package. If you want to use a mouse cursor of your computer, you need to add aframe-mouse-cursor-component. After if you must include the script using this code: import 'aframe'; import 'aframe-mouse-cursor-component'; // or this requi...

Detailed instructions on getting google-cloud-dataflow set up or installed.

$logger = $container->get('logger'); This will fetch the service with the service ID "logger" from the container, an object that implements Psr\Log\LoggerInterface.

To use Processing in Eclipse, start by creating a new Java project. Then, select File > Import and then choose General > File System to locate the core.jar file. It can be found in PATH_TO_PROCESSING/core/library/ for Windows or /Applications/Processing 3.app/Contents/Java/core/library/ for Ma...