hex grid (rhombus)

version 0, use lib.js first

by jmchen

HTML

<div id="info">hex grid (rhombus) </div>
<script src="http://cdnjs.cloudflare.com/ajax/libs/three.js/r70/three.min.js"></script>
<script src="https://dl.dropboxusercontent.com/u/3587259/Code/Threejs/OrbitControls.js">
    
</script>
<script src='http://jyunming-chen.github.io/hexgrid/hexlib.js'></script>

CSS

#info {
    position: absolute;
    top: 0px;
    width: 100%;
    padding: 10px;
    text-align: center;
    color: #ffff00
}
body {
    overflow: hidden;
}

JavaScript

var layout = Layout(layout_pointy, Point(5, 5), Point(0, 0));
var columns = 16,
    rows = 15;

var camera, scene, renderer;
var controls;
var mesh;
var clock = new THREE.Clock();

function initHex() {
    var geometry = new THREE.Geometry();
    var verts = geometry.vertices; // ptr assignment
    var i, j, p;

    for (j = 0; j < rows; j++) {
        for (i = 0; i < columns; i++) {
            var xy = hex_to_pixel(layout, Hex(i, j, 1 - i - j));
            p = new THREE.Vector3(xy.x, xy.y, 5 * Math.sin(xy.x/10));
            verts.push(p);
        }
    }

    var faces = geometry.faces;

    for (j = 1; j < rows; j++) {
        for (i = 0; i < columns - 1; i++) {
            a = j * columns + i; // a: (i,j);
            b = j * columns + i + 1; // b: (i+1,j);
            c = (j - 1) * columns + i + 1; // c: (i+1,j-1);
            d = (j - 1) * columns + i; // d: (i,j-1);
            faces.push(new THREE.Face3(a, c, b));
            faces.push(new THREE.Face3(a, d, c));
        }
    }

    geometry.computeFaceNormals();
    geometry.computeVertexNormals();

    var material = new THREE.MeshLambertMaterial({
        //wireframe: true,
        color: 0xff1234,
        side: THREE.DoubleSide
    });
    mesh = new THREE.Mesh(geometry, material);
    scene.add (mesh);
}

init();
initHex();
animate();

function init() {
    scene = new THREE.Scene();

    camera = new THREE.PerspectiveCamera(50, window.innerWidth / window.innerHeight, 1, 1000);
    camera.position.set (50,50,500);
    scene.add(camera);

    light = new THREE.PointLight(0xffffff);
    light.position.set(100, 300, 200);
    scene.add(light);

    var gridXZ = new THREE.GridHelper(100, 10);
    gridXZ.setColors(new THREE.Color(0xff0000), new THREE.Color(0xffffff));
    scene.add(gridXZ);

    renderer = new THREE.WebGLRenderer();
    renderer.setSize(window.innerWidth, window.innerHeight);
    renderer.setClearColor(0x888888);
    controls = new THREE.OrbitControls(camera, renderer.domElement);

   ...