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106 lines
4.4 KiB
C++
106 lines
4.4 KiB
C++
/******************************************************************************
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* $Id: minidriver_tms.cpp 27745 2014-09-27 16:38:57Z goatbar $
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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: Chris Schmidt
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*
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******************************************************************************
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* Copyright (c) 2007, Chris Schmidt
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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_tms.h"
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CPP_GDALWMSMiniDriverFactory(TMS)
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GDALWMSMiniDriver_TMS::GDALWMSMiniDriver_TMS() {
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}
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GDALWMSMiniDriver_TMS::~GDALWMSMiniDriver_TMS() {
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}
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CPLErr GDALWMSMiniDriver_TMS::Initialize(CPLXMLNode *config) {
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CPLErr ret = CE_None;
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if (ret == CE_None) {
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const char *base_url = CPLGetXMLValue(config, "ServerURL", "");
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if (base_url[0] != '\0') {
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m_base_url = base_url;
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if (m_base_url.find("${") == std::string::npos) {
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if (m_base_url[m_base_url.size()-1] != '/') {
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m_base_url += "/";
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}
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m_base_url += "${version}/${layer}/${z}/${x}/${y}.${format}";
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}
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} else {
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CPLError(CE_Failure, CPLE_AppDefined, "GDALWMS, TMS mini-driver: ServerURL missing.");
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ret = CE_Failure;
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}
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}
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m_dataset = CPLGetXMLValue(config, "Layer", "");
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m_version = CPLGetXMLValue(config, "Version", "1.0.0");
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m_format = CPLGetXMLValue(config, "Format", "jpg");
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return ret;
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}
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void GDALWMSMiniDriver_TMS::GetCapabilities(GDALWMSMiniDriverCapabilities *caps) {
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caps->m_capabilities_version = 1;
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caps->m_has_arb_overviews = 0;
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caps->m_has_image_request = 0;
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caps->m_has_tiled_image_requeset = 1;
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caps->m_max_overview_count = 32;
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}
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void GDALWMSMiniDriver_TMS::ImageRequest(CPL_UNUSED CPLString *url,
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CPL_UNUSED const GDALWMSImageRequestInfo &iri) {
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}
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void GDALWMSMiniDriver_TMS::TiledImageRequest(CPLString *url, const GDALWMSImageRequestInfo &iri, const GDALWMSTiledImageRequestInfo &tiri) {
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const GDALWMSDataWindow *data_window = m_parent_dataset->WMSGetDataWindow();
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int tms_y;
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if (data_window->m_y_origin != GDALWMSDataWindow::TOP) {
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tms_y = static_cast<int>(floor(((data_window->m_y1 - data_window->m_y0)
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/ (iri.m_y1 - iri.m_y0)) + 0.5)) - tiri.m_y - 1;
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} else {
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tms_y = tiri.m_y;
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}
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// http://tms25.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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URLSearchAndReplace(url, "${version}", "%s", m_version.c_str());
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URLSearchAndReplace(url, "${layer}", "%s", m_dataset.c_str());
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URLSearchAndReplace(url, "${format}", "%s", m_format.c_str());
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URLSearchAndReplace(url, "${x}", "%d", tiri.m_x);
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URLSearchAndReplace(url, "${y}", "%d", tms_y);
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URLSearchAndReplace(url, "${z}", "%d", tiri.m_level);
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/* Hack for some TMS like servers that require tile numbers split into 3 groups of */
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/* 3 digits, like http://tile8.geo.admin.ch/geoadmin/ch.swisstopo.pixelkarte-farbe */
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URLSearchAndReplace(url, "${xxx}", "%03d/%03d/%03d", tiri.m_x / 1000000, (tiri.m_x / 1000) % 1000, tiri.m_x % 1000);
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URLSearchAndReplace(url, "${yyy}", "%03d/%03d/%03d", tms_y / 1000000, (tms_y / 1000) % 1000, tms_y % 1000);
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}
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