Babylon.js/Samples/Scenes/Customs/heightMap_test.js

var CreateHeightMapTestScene = function (engine) {
    var scene = new BABYLON.Scene(engine);
    var camera = new BABYLON.ArcRotateCamera("Camera", 0, 0, 10, BABYLON.Vector3.Zero(), scene);
    var sun = new BABYLON.PointLight("Omni0", new BABYLON.Vector3(60, 100, 10), scene);

    camera.setPosition(new BABYLON.Vector3(-20, 20, 0));
    
    // Skybox
    var skybox = BABYLON.Mesh.CreateBox("skyBox", 100.0, scene);
    var skyboxMaterial = new BABYLON.StandardMaterial("skyBox", scene);
    skyboxMaterial.backFaceCulling = false;
    skyboxMaterial.reflectionTexture = new BABYLON.CubeTexture("Scenes/Customs/skybox/skybox", scene);
    skyboxMaterial.reflectionTexture.coordinatesMode = BABYLON.Texture.SKYBOX_MODE;
    skyboxMaterial.diffuseColor = new BABYLON.Color3(0, 0, 0);
    skyboxMaterial.specularColor = new BABYLON.Color3(0, 0, 0);
    skybox.material = skyboxMaterial;
    
    // Ground
    var ground = BABYLON.Mesh.CreateGroundFromHeightMap("ground", "Scenes/Customs/heightMap.png", 100, 100, 100, 0, 10, scene, false);
    var groundMaterial = new BABYLON.StandardMaterial("ground", scene);
    groundMaterial.diffuseTexture = new BABYLON.Texture("Scenes/Customs/ground.jpg", scene);
    groundMaterial.diffuseTexture.uScale = 6;
    groundMaterial.diffuseTexture.vScale = 6;
    groundMaterial.specularColor = new BABYLON.Color3(0, 0, 0);
    ground.position.y = -2.05;
    ground.material = groundMaterial;

    var beforeRenderFunction = function() {
        // Camera
        if (camera.beta < 0.1)
            camera.beta = 0.1;
        else if (camera.beta > (Math.PI / 2) * 0.9)
            camera.beta = (Math.PI / 2) * 0.9;

        if (camera.radius > 30)
            camera.radius = 30;

        if (camera.radius < 5)
            camera.radius = 5;
    };

    scene.registerBeforeRender(beforeRenderFunction);

    return scene;
};