114 строки
4.1 KiB
C++
114 строки
4.1 KiB
C++
/***********************************************************************
|
|
* File : postgisrastertiledataset.cpp
|
|
* Project: PostGIS Raster driver
|
|
* Purpose: GDAL Dataset implementation for PostGIS Raster tile
|
|
* Author: Jorge Arevalo, jorge.arevalo@deimos-space.com
|
|
* jorgearevalo@libregis.org
|
|
*
|
|
* Last changes: $Id$
|
|
*
|
|
***********************************************************************
|
|
* Copyright (c) 2013, Jorge Arevalo
|
|
* Copyright (c) 2013, 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 "postgisraster.h"
|
|
|
|
/************************
|
|
* \brief Constructor
|
|
************************/
|
|
PostGISRasterTileDataset::PostGISRasterTileDataset(
|
|
PostGISRasterDataset *poRDSIn, int nXSize, int nYSize)
|
|
: poRDS(poRDSIn), pszPKID(nullptr)
|
|
{
|
|
nRasterXSize = nXSize;
|
|
nRasterYSize = nYSize;
|
|
|
|
adfGeoTransform[GEOTRSFRM_TOPLEFT_X] = 0;
|
|
adfGeoTransform[GEOTRSFRM_WE_RES] = 1;
|
|
adfGeoTransform[GEOTRSFRM_ROTATION_PARAM1] = 0;
|
|
adfGeoTransform[GEOTRSFRM_TOPLEFT_Y] = 0;
|
|
adfGeoTransform[GEOTRSFRM_ROTATION_PARAM2] = 0;
|
|
adfGeoTransform[GEOTRSFRM_NS_RES] = 1;
|
|
}
|
|
|
|
/************************
|
|
* \brief Destructor
|
|
************************/
|
|
PostGISRasterTileDataset::~PostGISRasterTileDataset()
|
|
{
|
|
if (pszPKID)
|
|
{
|
|
CPLFree(pszPKID);
|
|
pszPKID = nullptr;
|
|
}
|
|
}
|
|
|
|
/********************************************************
|
|
* \brief Get the affine transformation coefficients
|
|
********************************************************/
|
|
CPLErr PostGISRasterTileDataset::GetGeoTransform(double *padfTransform)
|
|
{
|
|
// copy necessary values in supplied buffer
|
|
padfTransform[0] = adfGeoTransform[0];
|
|
padfTransform[1] = adfGeoTransform[1];
|
|
padfTransform[2] = adfGeoTransform[2];
|
|
padfTransform[3] = adfGeoTransform[3];
|
|
padfTransform[4] = adfGeoTransform[4];
|
|
padfTransform[5] = adfGeoTransform[5];
|
|
|
|
return CE_None;
|
|
}
|
|
|
|
/********************************************************
|
|
* \brief Return spatial extent of tile
|
|
********************************************************/
|
|
void PostGISRasterTileDataset::GetExtent(double *pdfMinX, double *pdfMinY,
|
|
double *pdfMaxX, double *pdfMaxY) const
|
|
{
|
|
// FIXME; incorrect in case of non 0 rotation terms
|
|
|
|
double dfMinX = adfGeoTransform[GEOTRSFRM_TOPLEFT_X];
|
|
double dfMaxY = adfGeoTransform[GEOTRSFRM_TOPLEFT_Y];
|
|
|
|
double dfMaxX = adfGeoTransform[GEOTRSFRM_TOPLEFT_X] +
|
|
nRasterXSize * adfGeoTransform[GEOTRSFRM_WE_RES] +
|
|
nRasterYSize * adfGeoTransform[GEOTRSFRM_ROTATION_PARAM1];
|
|
|
|
double dfMinY = adfGeoTransform[GEOTRSFRM_TOPLEFT_Y] +
|
|
nRasterXSize * adfGeoTransform[GEOTRSFRM_ROTATION_PARAM2] +
|
|
nRasterYSize * adfGeoTransform[GEOTRSFRM_NS_RES];
|
|
|
|
// In case yres > 0
|
|
if (dfMinY > dfMaxY)
|
|
{
|
|
double dfTemp = dfMinY;
|
|
dfMinY = dfMaxY;
|
|
dfMaxY = dfTemp;
|
|
}
|
|
|
|
*pdfMinX = dfMinX;
|
|
*pdfMinY = dfMinY;
|
|
*pdfMaxX = dfMaxX;
|
|
*pdfMaxY = dfMaxY;
|
|
}
|