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/******************************************************************************
* $Id: minidriver_virtualearth.cpp 23033 2011-09-03 18:46:11Z rouault $
*
* Project: WMS Client Driver
* Purpose: Implementation of Dataset and RasterBand classes for WMS
* and other similar services.
* Author: Even Rouault
*
******************************************************************************
* Copyright (c) 2011, Even Rouault
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
****************************************************************************/
#include "stdinc.h"
CPP_GDALWMSMiniDriverFactory(VirtualEarth)
GDALWMSMiniDriver_VirtualEarth::GDALWMSMiniDriver_VirtualEarth()
{
}
GDALWMSMiniDriver_VirtualEarth::~GDALWMSMiniDriver_VirtualEarth()
{
}
CPLErr GDALWMSMiniDriver_VirtualEarth::Initialize(CPLXMLNode *config)
{
CPLErr ret = CE_None;
if (ret == CE_None) {
const char *base_url = CPLGetXMLValue(config, "ServerURL", "");
if (base_url[0] != '\0') {
m_base_url = base_url;
if (m_base_url.find("${quadkey}") == std::string::npos) {
CPLError(CE_Failure, CPLE_AppDefined,
"GDALWMS, VirtualEarth mini-driver: ${quadkey} missing in ServerURL.");
ret = CE_Failure;
}
} else {
CPLError(CE_Failure, CPLE_AppDefined,
"GDALWMS, VirtualEarth mini-driver: ServerURL missing.");
ret = CE_Failure;
}
}
m_parent_dataset->WMSSetDefaultBlockSize(256, 256);
m_parent_dataset->WMSSetDefaultDataWindowCoordinates(-20037508.34,20037508.34,20037508.34,-20037508.34);
m_parent_dataset->WMSSetDefaultTileLevel(19);
m_parent_dataset->WMSSetDefaultOverviewCount(18);
m_parent_dataset->WMSSetNeedsDataWindow(FALSE);
m_projection_wkt=ProjToWKT("EPSG:900913");
return ret;
}
void GDALWMSMiniDriver_VirtualEarth::GetCapabilities(GDALWMSMiniDriverCapabilities *caps)
{
caps->m_capabilities_version = 1;
caps->m_has_arb_overviews = 0;
caps->m_has_image_request = 0;
caps->m_has_tiled_image_requeset = 1;
caps->m_max_overview_count = 32;
}
void GDALWMSMiniDriver_VirtualEarth::TiledImageRequest(CPLString *url,
const GDALWMSImageRequestInfo &iri,
const GDALWMSTiledImageRequestInfo &tiri)
{
*url = m_base_url;
char szTileNumber[64];
int x = tiri.m_x;
int y = tiri.m_y;
int z = MIN(32,tiri.m_level);
for(int i = 0; i < z; i ++)
{
int row = (y & 1);
int col = (x & 1);
szTileNumber[z-1-i] = (char) ('0' + (col | (row << 1)));
x = x >> 1;
y = y >> 1;
}
szTileNumber[z] = 0;
URLSearchAndReplace(url, "${quadkey}", "%s", szTileNumber);
URLSearchAndReplace(url, "${server_num}", "%d",
(tiri.m_x + tiri.m_y + z) % 4);
}
const char *GDALWMSMiniDriver_VirtualEarth::GetProjectionInWKT() {
return m_projection_wkt.c_str();
}
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