3DGraphics/square.html at master · voodarkdoo/3DGraphics · GitHub

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<!DOCTYPE html>
<html>
	<head>
		<title>Square drawed by vertices</title>
		<style>
			body { margin: 0; }
		</style>
	</head>
	<body>
		<script src="lib/three.js"></script>
		<script>
			const scene = new THREE.Scene();
			const camera = new THREE.PerspectiveCamera( 75, window.innerWidth / window.innerHeight, 0.1, 1000 );

			const renderer = new THREE.WebGLRenderer();
			renderer.setSize( window.innerWidth, window.innerHeight );
			document.body.appendChild( renderer.domElement );

            var material, geometry, mesh;
            material = new THREE.MeshBasicMaterial({
                color: 0xff0000
            });
            geometry = new THREE.Geometry();
            geometry.vertices.push(new THREE.Vector3(1, 2, 0));
            geometry.vertices.push(new THREE.Vector3(1, 1, 0));
            geometry.vertices.push(new THREE.Vector3(2, 1, 0));
            geometry.vertices.push(new THREE.Vector3(2, 2, 0));
            geometry.faces.push(new THREE.Face3(0, 1, 2));
            geometry.faces.push(new THREE.Face3(0, 2, 3));
            mesh = new THREE.Mesh(geometry, material);
            scene.add(mesh);

			camera.position.z = 5;

			const animate = function () {
				requestAnimationFrame( animate );


				renderer.render( scene, camera );
			};

			animate();
		</script>
	</body>
</html>