/*
* Copyright 2015-2017 WorldWind Contributors
*
* 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;
});