83 строки
3.1 KiB
C++
83 строки
3.1 KiB
C++
/******************************************************************************
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*
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* Project: WMS Client Driver
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* Purpose: Implementation of Dataset and RasterBand classes for WMS
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* and other similar services.
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* Author: Adam Nowacki, nowak@xpam.de
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*
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******************************************************************************
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* Copyright (c) 2007, Adam Nowacki
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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****************************************************************************/
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#include "wmsdriver.h"
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#include "minidriver_worldwind.h"
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WMSMiniDriver_WorldWind::WMSMiniDriver_WorldWind()
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{
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}
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WMSMiniDriver_WorldWind::~WMSMiniDriver_WorldWind()
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{
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}
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CPLErr WMSMiniDriver_WorldWind::Initialize(CPLXMLNode *config,
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CPL_UNUSED char **papszOpenOptions)
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{
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CPLErr ret = CE_None;
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// Try both spellings
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m_base_url = CPLGetXMLValue(config, "ServerURL",
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CPLGetXMLValue(config, "ServerUrl", ""));
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if (m_base_url.empty())
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{
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CPLError(CE_Failure, CPLE_AppDefined,
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"GDALWMS, TileService mini-driver: ServerURL missing.");
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ret = CE_Failure;
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}
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else
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{ // Prepare the url, leave it ready for extra arguments
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const char *dataset = CPLGetXMLValue(config, "Layer", "");
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URLPrepare(m_base_url);
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m_base_url += CPLOPrintf("T=%s", dataset);
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}
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m_oSRS.importFromEPSG(4326);
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return ret;
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}
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CPLErr WMSMiniDriver_WorldWind::TiledImageRequest(
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WMSHTTPRequest &request, const GDALWMSImageRequestInfo &iri,
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const GDALWMSTiledImageRequestInfo &tiri)
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{
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CPLString &url = request.URL;
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const GDALWMSDataWindow *data_window = m_parent_dataset->WMSGetDataWindow();
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int worldwind_y =
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static_cast<int>(floor(
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((data_window->m_y1 - data_window->m_y0) / (iri.m_y1 - iri.m_y0)) +
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0.5)) -
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tiri.m_y - 1;
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// http://worldwind25.arc.nasa.gov/tile/tile.aspx?T=geocover2000&L=0&X=86&Y=39
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url = m_base_url +
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CPLOPrintf("L=%d&X=%d&Y=%d", tiri.m_level, tiri.m_x, worldwind_y);
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return CE_None;
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}
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