Angular | Getting Started with matter.js
Matter.js is a 2D rigid body physics engine for the web written in JavaScript.
Creating an angular app with pages using matter.js is easy. Complete code is here.
For a more details post, please take a look at here: Angular | Working with matter.js
Inhaltsverzeichnis
Create starter app
First, create a default angular app with ng new.
❯ ng new app-starter ? Do you want to enforce stricter type checking and stricter bundle budgets in the workspace? This setting helps improve maintainability and catch bugs ahead of time. For more information, see https://angular.io/strict Yes ? Would you like to add Angular routing? Yes ? Which stylesheet format would you like to use? SCSS
cd app-starter
Add matter.js
Matter.js is a javascript library, so we have to add the corresponding files to our angular app. We will use the npm module matter-js.
npm install matter-js
We also add the type definitions, so that Visual Studio code knows how to check our code.
npm install @types/matter-js --save-dev
Clear content of app.component.html
To keep out demopage clean, we will remove unnecessary code from app.component.html.
Remove all of the content and just keep the last line
<router-outlet></router-outlet>
Create pager for MatterJS democode
We will use a seperate Angular component/page for our matter.js demo
ng generate component pages/Demo
app-routing.module.ts
Next, we add a routing for our demopage.
import { NgModule } from '@angular/core'; import { Routes, RouterModule } from '@angular/router'; import { DemoComponent } from './pages/demo/demo.component'; const routes: Routes = [ { path: 'demo', component: DemoComponent }, { path: '', redirectTo: '/demo', pathMatch: 'full' }, { path: '**', redirectTo: '/demo', pathMatch: 'full' }, ]; @NgModule({ imports: [RouterModule.forRoot(routes)], exports: [RouterModule], }) export class AppRoutingModule {}
Start App
Ready to take a first look at our app.
yarn start
demo.component.scss
Now, we do a little styling
.demo { background-color: lightgray; border: 4 dotted black; }
demo.component.ts
And finally the matter.js code. Starting with the default imports for a angular app
import { Component, OnInit } from '@angular/core'
Next, we import the required matter.js parts
import { Engine, Runner, Render, World, Constraint, MouseConstraint, Bodies} from 'matter-js'
Following the definition for our DemoComponent
@Component({ selector: 'app-minimal', templateUrl: './demo.component.html', styleUrls: ['./demo.component.scss'], }) export class DemoComponent implements OnInit { constructor() {} ngOnInit() { this.demo() } demo() { } }
The main code of out demo will be in the function demo()
demo() { var engine = Engine.create() var render = Render.create({ element: document.body, engine: engine, options: { width: 800, height: 400, wireframes: false, }, }) var boxA = Bodies.rectangle(400, 200, 80, 80) var ballA = Bodies.circle(380, 100, 40, {}) var ballB = Bodies.circle(460, 10, 40, {}) var ground = Bodies.rectangle(400, 380, 810, 60, { isStatic: true, }) World.add(engine.world, [boxA, ballA, ballB, ground]) Engine.run(engine) Render.run(render) } }
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