Some of the best web design tools empower designers to easily bring their ideas to life. Whether you need a tool to help you create a mockup, a logo, a full-blown website, or just give you some inspiration, the web is full of websites that you can use to level up your web design skills. Obj.material = new THREE.Luckily, there are many tools and resources out there to help designers stay on top of web design trends. Grab the reference to the main WebGL sceneĬonst scene = document.querySelector('a-scene').object3D Get the ref of the object to which the component is attached The template for our A-Frame component looks like: The init function will run as soon as the component gets attached to the Entity. We'll be passing in a few options like color, opacity, and other visual properties. You can think of schema as arguments, or properties that can be passed to the component. To do that, we'll define our component in the existing js file app/components/aframe-custom.js.įirst, we'll register the component using the global AFRAME reference, define our schema for the component, and add our three.js code inside the init function. That'll give it a really neat geometric, meshy (is that even a word?) look. Our component will take the provided shape, and create a slightly bigger wireframe of the same shape on top of it. This component will alter the appearance of our object, and also attach interactive behavior to it. Now let's take it up a notch and build our own custom A-Frame component from scratch. We now have a 3D object and an environment that we can walk/look around in. You can also try using ambient or point lights, but in this situation, I prefer directional to emulate it coming from the sun's direction.īaby steps. This adds a directional light, which is a type of light emitted from a certain point in space. Enough with the talking, let's write some code. But A-Frame converts that to WebGL for us. See how this is pretty much like creating your ordinary React app, except the result is WebGL instead of raw markup? Well, technically, it is still markup. We just need to pass in the appropriate props and let it do the hard work for us. A-Frame has a built in animation engine that handles that for us. Keep in mind that we won't be handling any WebGL render calls or manipulating the animation loop with React. Since React is excellent at binding state to markup, diffing it for you, and re-rendering, we'll be taking advantage of that. A-Frame handles almost all of its rendering through the use of HTML attributes (or components as mentioned above), and updating different attributes of many objects in your scene manually can be a massive headache. What's the point of using React, anyway? Well, if you wanted to attach state to these objects, then manually doing it would be a lot of hard work. Sooooo, all we need is markup and a few scripts. This is called composition over inheritance. It gives us maximum flexibility and reusability of code, and is very easy to reason about. You're grabbing just the bits of functionality you need and attaching them to Entities. I hope you see how powerful this really is. Basically, anything listed in the A-Frame documentation is fair game. Then we can pass in other values for attributes like position, rotation, material, height, etc. For example, passing in a-box as the value of the prop primitive will render a box for us. Because we're using React, this means that we'll be passing props into our Entity to tell it what to render. What ECS means in the context of an A-Frame app is that we create a bunch of Entities that quite literally do nothing, and attach components to them to describe their behavior and appearance. Every object inside the A-Frame scene is an Entity.Ī-Frame is built on the Entity-component-system (ECS) architecture, a very common pattern utilized in 3D and game development most notably popularized by Unity, a powerful game engine. Entities are the basic building blocks of an A-Frame Scene. You can think of Entity like an HTML div. It should be the outermost element wrapping everything else inside it. It's what creates the stage for you to place 3D objects in, initializes the camera, the WebGL renderer and handles other boilerplate. The Scene component is the root node of an A-Frame app. Fire up the editor on the root of the project directory and inspect the file app/main.js (or view it on GitHub), that's where we'll be building out our scene.
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |