Babylon.js/Babylon/Mesh/babylon.groundMesh.js

var __extends = this.__extends || function (d, b) {
    for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p];
    function __() { this.constructor = d; }
    __.prototype = b.prototype;
    d.prototype = new __();
};
var BABYLON;
(function (BABYLON) {
    var GroundMesh = (function (_super) {
        __extends(GroundMesh, _super);
        function GroundMesh(name, scene) {
            _super.call(this, name, scene);
            this.chunkSize = 128;
            this._worldInverse = new BABYLON.Matrix();
        }
        Object.defineProperty(GroundMesh.prototype, "subdivisions", {
            get: function () {
                return this._subdivisions;
            },
            enumerable: true,
            configurable: true
        });

        GroundMesh.prototype.optimize = function (subdivisions) {
            if (this.getTotalVertices() < 2000) {
                BABYLON.Tools.Warn("Optimizing GroundMesh requires at least 2000 vertices.");
            }

            this.subdivide(subdivisions || this._subdivisions);

            this.createOrUpdateSubmeshesOctree();
        };

        GroundMesh.prototype.getHeightAtCoordinates = function (x, z) {
            var ray = new BABYLON.Ray(new BABYLON.Vector3(x, this.getBoundingInfo().boundingBox.maximumWorld.y + 1, z), new BABYLON.Vector3(0, -1, 0));

            this.getWorldMatrix().invertToRef(this._worldInverse);

            ray = BABYLON.Ray.Transform(ray, this._worldInverse);

            var pickInfo = this.intersects(ray);

            if (pickInfo.hit) {
                var result = BABYLON.Vector3.TransformCoordinates(pickInfo.pickedPoint, this.getWorldMatrix());
                return result.y;
            }

            return 0;
        };
        return GroundMesh;
    })(BABYLON.Mesh);
    BABYLON.GroundMesh = GroundMesh;
})(BABYLON || (BABYLON = {}));
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