如何向TypeScript添加对WebGL等浏览器功能的支持？

Question

var canvas = <HTMLCanvasElement>document.getElementById('canvas1');
var gl = canvas.getContext('webgl');
canvas.width = 400;
canvas.height = 400;
gl.viewport(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight);

"HTMLCanvasElement"似乎只提供了2d画布方法.它不会让我编译gl.viewport()等.如何添加对WebGL的这种支持？

Answer 1

您需要在使用WebGL方法之前定义它们.您可以在此处找到一些社区编写的WebGL类型.将WebGL.d.ts添加到项目中并将其称为:

///<reference path="WebGL.d.ts" />

var canvas = <any>document.getElementById('canvas1');
var gl =  <WebGLRenderingContext> canvas.getContext('webgl');
canvas.width = 400;
canvas.height = 400;
gl.viewport(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight);