Source: render/SurfaceTile.js

/*
 * Copyright 2003-2006, 2009, 2017, United States Government, as represented by the Administrator of the
 * National Aeronautics and Space Administration. All rights reserved.
 *
 * The NASAWorldWind/WebWorldWind platform is licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/**
 * @exports SurfaceTile
 */
define([
        '../error/ArgumentError',
        '../util/Logger',
        '../geom/Matrix',
        '../geom/Sector',
        '../error/UnsupportedOperationError'
    ],
    function (ArgumentError,
              Logger,
              Matrix,
              Sector,
              UnsupportedOperationError) {
        "use strict";

        /**
         * Constructs a surface tile for a specified sector.
         * @alias SurfaceTile
         * @constructor
         * @classdesc Defines an abstract base class for imagery to be rendered on terrain. Applications typically
         * do not interact with this class.
         * @param {Sector} sector The sector of this surface tile.
         * @throws {ArgumentError} If the specified sector is null or undefined.
         */
        var SurfaceTile = function (sector) {
            if (!sector) {
                throw new ArgumentError(Logger.logMessage(Logger.LEVEL_SEVERE, "SurfaceTile", "constructor",
                    "missingSector"));
            }

            /**
             * The sector spanned by this surface tile.
             * @type {Sector}
             */
            this.sector = sector;
        };

        /**
         * Causes this surface tile to be active, typically by binding the tile's texture in WebGL.
         * Subclasses must override this function.
         * @param {DrawContext} dc The current draw context.
         * @returns {Boolean} true if the resource was successfully bound, otherwise false.
         */
        SurfaceTile.prototype.bind = function (dc) {
            throw new UnsupportedOperationError(
                Logger.logMessage(Logger.LEVEL_SEVERE, "SurfaceTile", "bind", "abstractInvocation"));
        };

        /**
         * Applies this surface tile's internal transform, typically a texture transform to align the associated
         * resource with the terrain.
         * Subclasses must override this function.
         * @param {DrawContext} dc The current draw context.
         * @param {Matrix} matrix The transform to apply.
         */
        SurfaceTile.prototype.applyInternalTransform = function (dc, matrix) {
            throw new UnsupportedOperationError(
                Logger.logMessage(Logger.LEVEL_SEVERE, "SurfaceTile", "applyInternalTransform", "abstractInvocation"));
        };

        return SurfaceTile;
    });