THREE.js-examples/triangle_colored.html at master · adershmanoj/THREE.js-examples · GitHub

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<!DOCTYPE html>
<html>
<head>
    <title>Triangle Coloured</title>
   <meta http-equiv="content-type" content="text/html; charset=ISO-8859-1">
    <style>
    body{
        background-color:#000000;
        overflow:hidden;
    </style>
    <script src="js/three.min.js"></script>
     </head>
    <body id="canvas">
    <script>
        init();
        render();
        var scene;
        var camera;
        var renderer;
        function init(){
            renderer = new THREE.WebGLRenderer();
           renderer.setSize( window.innerWidth, window.innerHeight );
            document.getElementById("canvas").appendChild(renderer.domElement);
            scene=new THREE.Scene();
            camera=new THREE.PerspectiveCamera(30,window.innerWidth/window.innerHeight,1,100);
            camera.position.set(0,0,10);
            var triangleGeometry=new THREE.Geometry();
             triangleGeometry.vertices.push(new THREE.Vector3( 0.0,  1.0, 0.0));
                 triangleGeometry.vertices.push(new THREE.Vector3(-1.0, -1.0, 0.0));
                 triangleGeometry.vertices.push(new THREE.Vector3( 1.0, -1.0, 0.0));
                triangleGeometry.faces.push(new THREE.Face3(0, 1, 2));
            triangleGeometry.faces[0].vertexColors[0]=new THREE.Color(0xFF0000);
            triangleGeometry.faces[0].vertexColors[1]=new THREE.Color(0x00FF00);
            triangleGeometry.faces[0].vertexColors[2]=new THREE.Color(0x0000FF);
            var material=new THREE.MeshBasicMaterial({
                vertexColors:THREE.VertexColors,
                side:THREE.DoubleSide
            });
            var triangleMesh=new THREE.Mesh(triangleGeometry,material);
            triangleMesh.position.set(-0.0, 0.0, 3.0);
            scene.add(triangleMesh);
        }
        function render(){
            renderer.render(scene,camera);
        }

        </script>

    </body>
</html>