For example, if we wanted to grab an entity’s three.js camera object or material object, we could reach into its components
var camera = document.querySelector('a-entity[camera]').components.camera.camera;
var material = document.querySelector('a-entity[material]').components.material.material;
...
Systems can help separate logic and behavior from data if desired. We let
systems handle the heavy lifting, and components only worry about managing its
data through its lifecycle methods:
AFRAME.registerSystem('my-component', {
createComplexObject: function (data) {
// Do calculations ...
A component’s members and methods can be accessed through the entity from the .components object. Look up the component from the entity’s map of components, and we’ll have access to the component’s internals. Consider this example component:
AFRAME.registerComponent('foo', {
init: function () {
...
Audio and video assets will only block the scene if we set autoplay or if we
set preload="auto":
<a-scene>
<a-assets>
<!-- These will not block. -->
<audio src="blockus.mp3"></audio>
<video src="loadofblocks.mp4">&...
As an introductory example, to define a 5-meter orbit on an entity about the Y-axis that takes 10 seconds, we can offset the position and animate the rotation. This animation starts with the initial rotation about the Y-axis of 0 degrees, and goes around 360 degrees. It’s defined with a duration of ...
A-Frame's animation system can animate different types of properties.
vec3 Properties
A-Frame has standard vec3 components (i.e., position, rotation,
and scale). These components consist of three factors: X, Y, and Z. We can
pass three space-delimited numbers to the from and to attributes just a...
When an entity includes multiple mixins that define the same component
properties, the right-most mixin takes precedence. In the example below, the
entity includes both red and blue mixins, and since the blue mixin is
included last, the final color of the cube will be blue.
<a-scene>
&l...
using System;
using System.IO;
using System.IO.Compression;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
string zipPath = @"c:\example\start.zip";
string extractPath = @"c:\example\extract...
Step 1: Add ScriptManager to your page
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
Step 2: Add UpdatePanel to your page just after ScriptManager.
<asp:UpdatePanel ID="UpdatePanel1" runat="server"...
You must use a ScriptManager control on a page to enable the following features of ASP.NET AJAX:
1. Client-script functionality of the Microsoft AJAX Library, and any custom script that you want to send to the browser.
protected void Button1_Click(object sender, EventArgs e)
{
Page.ClientScr...
This example shows how to create a custom dragging behavior by Subclassing UIDynamicBehavior and subclassing UICollectionViewFlowLayout. In the example, we have UICollectionView that allows for the selection of multiple items. Then with a long press gesture those items can be dragged in an elastic, ...
Forward messages one object to another by delegates, multicasting these messages to multiple observers..
Step 1:- Create NSObject class of RRMulticastDelegate
Step 2:- Following code implement in RRMulticastDelegate.h file
#import <Foundation/Foundation.h>
@interface RRMulticastDelegate ...
If for some reason using the Symfony Installer is not an option, you can also create a new project using Composer. First of all, make sure you have installed Composer.
Next, you can use the create-project command to create a new project:
composer create-project symfony/framework-standard-edition m...
Drupal itself provide good caching options to increase the page speed and serve pages fast to end users. Caches are used to improve the performance of your Drupal site. But it also has a drawback that sometimes it could lead the "stale" data. This means, sometimes, the system may start to ...
List of available mixins:
ListModelMixin: provides a .list() method to the view/viewset
RetrieveModelMixin: provides a .retrieve() method to the view/viewset
CreateModelMixin: provides a .create() method to the view/viewset
UpdateModelMixin: provides a .update() method to the view/viewset
D...
The API call avio_alloc_context, which sets up a custom IO context, takes in a pointer to a Read function. If you are reading from an IStream, you can use the following:
/**
* Reads from an IStream into FFmpeg.
*
* @param ptr A pointer to the user-defined IO data structure.
* @param b...
The API call avio_alloc_context, which sets up a custom IO context, takes in a pointer to a Seek function. If you are reading from an IStream, you can use the following:
/**
* Seeks to a given position on an IStream.
*
* @param ptr A pointer to the user-defined IO data structure.
* @pa...
Sympy is made for symbolic math, so let's have a look at some basic integration and differentiation.
from sympy import symbols, sqrt, exp, diff, integrate, pprint
x, y = symbols(...
The ternary operator (?:)
Support for the extended ternary operator was added in Twig 1.12.0.
{{ foo ? 'yes' : 'no' }}
Evaluates:
if foo echo yes else echo no
{{ foo ?: 'no' }}
or
{{ foo ? foo : 'no' }}
Evaluates:
if foo echo it, else echo no
{{ foo ? 'yes' }}
or
{{ f...
