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QGIS/tests/algorithms/projections/projectioncshandlingtest.h

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/***************************************************************************
projectioncshandlingtest.h
--------------------------------------
Date : Sun Sep 16 12:20:35 AKDT 2007
Copyright : (C) 2007 by Gary E. Sherman
Email : sherman at mrcc dot com
***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#include <iostream>
#include <fstream>
#include <cppunit/TestCase.h>
#include <cppunit/TestSuite.h>
#include <cppunit/TestCaller.h>
//
//qt includes
#include <qstring.h>
//gdal and ogr includes
#include <ogr_api.h>
#include <ogr_srs_api.h>
#include <cpl_error.h>
class ProjectionCsHandlingTest : public CppUnit::TestCase {
public:
ProjectionCsHandlingTest(){}
ProjectionCsHandlingTest( std::string name ) : CppUnit::TestCase( name ) { }
static CppUnit::Test *suite()
{
CppUnit::TestSuite *suiteOfTests = new CppUnit::TestSuite( "ProjectionCsHandlingTest" );
suiteOfTests->addTest( new CppUnit::TestCaller<ProjectionCsHandlingTest>(
"testProjImportWkt",
&ProjectionCsHandlingTest::testProjImportWkt ) );
suiteOfTests->addTest( new CppUnit::TestCaller<ProjectionCsHandlingTest>(
"testProjExportToProj4",
&ProjectionCsHandlingTest::testProjExportToProj4 ) );
suiteOfTests->addTest( new CppUnit::TestCaller<ProjectionCsHandlingTest>(
"testProjNad27ExportToProj4",
&ProjectionCsHandlingTest::testProjNad27ExportToProj4 ) );
suiteOfTests->addTest( new CppUnit::TestCaller<ProjectionCsHandlingTest>(
"testProjNad83ExportToProj4",
&ProjectionCsHandlingTest::testProjNad83ExportToProj4 ) );
suiteOfTests->addTest( new CppUnit::TestCaller<ProjectionCsHandlingTest>(
"testFetchWktAttributes",
&ProjectionCsHandlingTest::testFetchWktAttributes ) );
suiteOfTests->addTest( new CppUnit::TestCaller<ProjectionCsHandlingTest>(
"testProjEpsgExportToProj4",
&ProjectionCsHandlingTest::testProjEpsgExportToProj4 ) );
suiteOfTests->addTest( new CppUnit::TestCaller<ProjectionCsHandlingTest>(
"testAkAlbersExportToProj4NoMorph",
&ProjectionCsHandlingTest::testAkAlbersExportToProj4NoMorph ) );
suiteOfTests->addTest( new CppUnit::TestCaller<ProjectionCsHandlingTest>(
"testAkAlbersExportToProj4Morph",
&ProjectionCsHandlingTest::testAkAlbersExportToProj4Morph ) ); suiteOfTests->addTest( new CppUnit::TestCaller<ProjectionCsHandlingTest>(
"testWktFromFile",
&ProjectionCsHandlingTest::testWktFromFile ) );
suiteOfTests->addTest( new CppUnit::TestCaller<ProjectionCsHandlingTest>(
"testOgrTransform",
&ProjectionCsHandlingTest::testOgrTransform ) );
return suiteOfTests;
}
//
// Setup the common test members, etc
//
void setUp()
{
// wkt for creating a spatial refernence system
wkt = "GEOGCS[\"WGS 84\", "
" DATUM[\"WGS_1984\", "
" SPHEROID[\"WGS 84\",6378137,298.257223563, "
" AUTHORITY[\"EPSG\",7030]], "
" TOWGS84[0,0,0,0,0,0,0], "
" AUTHORITY[\"EPSG\",6326]], "
" PRIMEM[\"Greenwich\",0,AUTHORITY[\"EPSG\",8901]], "
" UNIT[\"DMSH\",0.0174532925199433,AUTHORITY[\"EPSG\",9108]], "
" AXIS[\"Lat\",NORTH], "
" AXIS[\"Long\",EAST], "
" AUTHORITY[\"EPSG\",4326]]";
wktDest = "GEOGCS[\"GCS_North_American_1927\",DATUM[\"D_North_American_1927\",SPHEROID[\"Clarke_1866\",6378206.4,294.9786982]],PRIMEM[\"Greenwich\",0],UNIT[\"Degree\",0.017453292519943295]]";
wktDestNad83 = "GEOGCS[\"GCS_North_American_1983\",DATUM[\"D_North_American_1983\",SPHEROID[\"GRS_1980\",6378137,298.257222101]],PRIMEM[\"Greenwich\",0],UNIT[\"Degree\",0.0174532925199433]]";
wktEpsg = "GEOGCS[\"NAD27\",DATUM[\"North_American_Datum_1927\",SPHEROID[\"Clarke 1866\",6378206.4,294.978698213901]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433]]";
wktAkAlbers = "PROJCS[\"Alaska_Albers_Equal_Area_Conic\",GEOGCS[\"GCS_North_American_1927\",DATUM[\"D_North_American_1927\",SPHEROID[\"Clarke_1866\",6378206.4,294.9786982]],PRIMEM[\"Greenwich\",0.0],UNIT[\"Degree\",0.0174532925199433]],PROJECTION[\"Albers\"],PARAMETER[\"False_Easting\",0.0],PARAMETER[\"False_Northing\",0.0],PARAMETER[\"Central_Meridian\",-154.0],PARAMETER[\"Standard_Parallel_1\",55.0],PARAMETER[\"Standard_Parallel_2\",65.0],PARAMETER[\"Latitude_Of_Origin\",50.0],UNIT[\"Meter\",1.0]]";
}
//
// Test creation of a OGRSpatialReference object from wkt
//
void testProjImportWkt() {
// create a spatial reference system object
std::cout << "\n\nCreating and OGRSpatialReference object from WKT" << std::endl;
OGRSpatialReferenceH myInputSpatialRefSys = OSRNewSpatialReference(NULL);
char *pWkt = (char*)wkt.ascii();
CPPUNIT_ASSERT(OSRImportFromWkt(myInputSpatialRefSys,&pWkt)== OGRERR_NONE);
OSRDestroySpatialReference( myInputSpatialRefSys );
}
//
// Test fetch of proj4 parameters from an OGRSpatialReference object
// Failure occurs if datum field is not found in the proj4 parameter string
//
void testProjExportToProj4()
{
std::cout << "\n\nGetting proj4 parameters from OGRSpatialReference object" << std::endl;
// set up the spatial ref
OGRSpatialReferenceH myInputSpatialRefSys;
char *pWkt = (char*)wkt.ascii();
CPPUNIT_ASSERT(myInputSpatialRefSys.importFromWkt(&pWkt)== OGRERR_NONE);
// get the proj4 for the projection
char *proj4src;
CPPUNIT_ASSERT(myInputSpatialRefSys.exportToProj4(&proj4src) == OGRERR_NONE);
std::cout << "\tPROJ4: " << proj4src << std::endl;
CPPUNIT_ASSERT(QString(proj4src).find("datum") > -1);
}
//
// Test fetch of proj4 parameters from GEOGCS NAD27 OGRSpatialReference object
// Failure occurs if datum field is not found in the proj4 parameter string
//
void testProjNad27ExportToProj4()
{
std::cout << "\n\nGetting NAD27 proj4 parameters from OGRSpatialReference object" << std::endl;
// set up the spatial ref
OGRSpatialReference myInputSpatialRefSys;
char *pWkt = (char*)wktDest.ascii();
CPPUNIT_ASSERT(myInputSpatialRefSys.importFromWkt(&pWkt)== OGRERR_NONE);
// get the proj4 for the projection
char *proj4src;
CPPUNIT_ASSERT(myInputSpatialRefSys.exportToProj4(&proj4src) == OGRERR_NONE);
std::cout << "\tPROJ4: " << proj4src << std::endl;
CPPUNIT_ASSERT(QString(proj4src).find("datum") > -1);
}
//
// Test fetch of proj4 parameters from GEOGCS NAD83 OGRSpatialReference object
// Failure occurs if datum field is not found in the proj4 parameter string
//
void testProjNad83ExportToProj4()
{
std::cout << "\n\nGetting NAD83 proj4 parameters used in states.shp" << std::endl;
// set up the spatial ref
OGRSpatialReference myInputSpatialRefSys;
char *pWkt = (char*)wktDestNad83.ascii();
CPPUNIT_ASSERT(myInputSpatialRefSys.importFromWkt(&pWkt)== OGRERR_NONE);
// morph it from esri
std::cout << "\tMorphing from ESRI to standard form before getting proj4 parameters" << std::endl;
CPPUNIT_ASSERT(myInputSpatialRefSys.morphFromESRI() == OGRERR_NONE);
// get the proj4 for the projection
char *proj4src;
CPPUNIT_ASSERT(myInputSpatialRefSys.exportToProj4(&proj4src) == OGRERR_NONE);
std::cout << "\tPROJ4: " << proj4src << std::endl;
CPPUNIT_ASSERT(QString(proj4src).find("datum") > -1);
}
//
// Test fetch of proj4 parameters from GEOGCS NAD83 OGRSpatialReference object
// in EPSG format
// Failure occurs if datum field is not found in the proj4 parameter string
//
void testProjEpsgExportToProj4()
{
std::cout << "\n\nGetting NAD83 proj4 parameters from an EPSG format WKT" << std::endl;
// set up the spatial ref
OGRSpatialReference myInputSpatialRefSys;
char *pWkt = (char*)wktEpsg.ascii();
CPPUNIT_ASSERT(myInputSpatialRefSys.importFromWkt(&pWkt)== OGRERR_NONE);
// get the proj4 for the projection
char *proj4src;
CPPUNIT_ASSERT(myInputSpatialRefSys.exportToProj4(&proj4src) == OGRERR_NONE);
std::cout << "\tPROJ4: " << proj4src << std::endl;
CPPUNIT_ASSERT(QString(proj4src).find("datum") > -1);
}
//
// Test fetch of proj4 parameters from Alaska Albers OGRSpatialReference object
// without morph to ESRI form
// Failure occurs if datum field is not found in the proj4 parameter string
//
void testAkAlbersExportToProj4NoMorph()
{
std::cout << "\n\nGetting Alaska Albers proj4 parameters from kodiak.prj" << std::endl;
// set up the spatial ref
OGRSpatialReference myInputSpatialRefSys;
char *pWkt = (char*)wktAkAlbers.ascii();
CPPUNIT_ASSERT(myInputSpatialRefSys.importFromWkt(&pWkt)== OGRERR_NONE);
std::cout << "\tGetting proj4 paramters without morph to ESRI form" << std::endl;
// get the proj4 for the unmorphed projection
char *proj4src;
CPPUNIT_ASSERT(myInputSpatialRefSys.exportToProj4(&proj4src) == OGRERR_NONE);
std::cout << "\tPROJ4: " << proj4src << std::endl;
CPPUNIT_ASSERT(QString(proj4src).find("datum") > -1);
}
//
// Test fetch of proj4 parameters from Alaska Albers OGRSpatialReference object
// with morph to ESRI form
// Failure occurs if datum field is not found in the proj4 parameter string
//
void testAkAlbersExportToProj4Morph()
{
std::cout << "\n\nGetting Alaska Albers proj4 parameters from kodiak.prj" << std::endl;
// set up the spatial ref
OGRSpatialReference myInputSpatialRefSys;
char *pWkt = (char*)wktAkAlbers.ascii();
CPPUNIT_ASSERT(myInputSpatialRefSys.importFromWkt(&pWkt)== OGRERR_NONE);
std::cout << "\tGetting proj4 paramters with morph to ESRI form" << std::endl;
CPPUNIT_ASSERT(myInputSpatialRefSys.morphFromESRI() == OGRERR_NONE);
// get the proj4 for the unmorphed projection
char *proj4src;
CPPUNIT_ASSERT(myInputSpatialRefSys.exportToProj4(&proj4src) == OGRERR_NONE);
std::cout << "\tPROJ4: " << proj4src << std::endl;
CPPUNIT_ASSERT(QString(proj4src).find("datum") > -1);
}
//
// Test fetching of wkt properties from a spatial ref object
//
void testFetchWktAttributes()
{
std::cout << "\n\nFetching states.prj WKT attributes using OGRSpatialReference::GetAttrValue" << std::endl;
// set up the spatial ref - use the nad83 from states.prj
OGRSpatialReference myInputSpatialRefSys;
char *pWkt = (char*)wktDestNad83.ascii();
CPPUNIT_ASSERT(myInputSpatialRefSys.importFromWkt(&pWkt)== OGRERR_NONE);
// test access to the datum
const char *datum = myInputSpatialRefSys.GetAttrValue("DATUM", 0);
CPPUNIT_ASSERT(datum != 0);
std::cout << "\tDatum: " << datum << std::endl;
}
//
// Test the WKT contained in wkt.txt in the current directory to see if
// the datum can be determined
//
void testWktFromFile()
{
std::ifstream wktIn("./wkt.txt");
char *buf = new char[16384];
wktIn.getline(buf, 16384);
wktIn.close();
std::cout << "\n\nGetting proj4 parameters from wkt.txt" << std::endl;
std::cout << buf << std::endl;
// set up the spatial ref
OGRSpatialReference myInputSpatialRefSys;
CPPUNIT_ASSERT(myInputSpatialRefSys.importFromWkt(&buf)== OGRERR_NONE);
// std::cout << "\tGetting proj4 paramters with morph to ESRI form" << std::endl;
// CPPUNIT_ASSERT(myInputSpatialRefSys.morphFromESRI() == OGRERR_NONE);
// get the proj4 for the unmorphed projection
char *proj4src;
CPPUNIT_ASSERT(myInputSpatialRefSys.exportToProj4(&proj4src) == OGRERR_NONE);
std::cout << "\tPROJ4: " << proj4src << std::endl;
// morph it then spew it
myInputSpatialRefSys.morphFromESRI();
myInputSpatialRefSys.exportToProj4(&proj4src);
std::cout << "\tMorphed PROJ4: " << proj4src << std::endl;
CPPUNIT_ASSERT(QString(proj4src).find("datum") > -1);
}
void testOgrTransform()
{
std::cout << "\n\nTesting OGR transform of kodiak.prj to WGS 84 Geographic" << std::endl;
// set up the spatial ref
OGRSpatialReference myInputSpatialRefSys;
char *pWkt = (char*)wktAkAlbers.ascii();
CPPUNIT_ASSERT(myInputSpatialRefSys.importFromWkt(&pWkt)== OGRERR_NONE);
std::cout << "\tGetting proj4 paramters with morph to ESRI form" << std::endl;
CPPUNIT_ASSERT(myInputSpatialRefSys.morphFromESRI() == OGRERR_NONE);
OGRSpatialReference oTargetCRS;
char *pWgs84 = (char *)wkt.ascii();
oTargetCRS.importFromWkt(&pWgs84);
OGRCoordinateTransformation *poCT;
poCT = OGRCreateCoordinateTransformation( &myInputSpatialRefSys,
&oTargetCRS );
double x = 0.0;
double y = 0.0;
poCT->Transform(1, &x, &y);
std::cout << "Transformed 0,0 albers point = " << x << ", " << y << std::endl;
CPPUNIT_ASSERT((x == -154.0) || (y == 50.0));
// get the proj4 for the morphed projection
char *proj4src;
CPPUNIT_ASSERT(myInputSpatialRefSys.exportToProj4(&proj4src) == OGRERR_NONE);
std::cout << "\tPROJ4: " << proj4src << std::endl;
std::cout << "Testing inverse transform" << std::endl;
poCT = OGRCreateCoordinateTransformation( &oTargetCRS, &myInputSpatialRefSys);
x = -154.0;
y = 50.0;
poCT->Transform(1, &x, &y);
CPPUNIT_ASSERT((x == 0) || (y == 0));
std::cout << "Transformed -154,50 geographic point = " << x << ", " << y << std::endl;
}
private:
// WKT for default projection hardcoded in QgsCoordinateTransform class
QString wkt;
// WKT for an ESRI style GEOGCS in NAD27
QString wktDest;
// WKT for an ESRI style GEOGCS in NAD83 (from states.shp shapefile)
QString wktDestNad83;
// WKT for an EPSG style GEOGCS
QString wktEpsg;
// WKT for an ESRI style PROJCS as read from a shapefile
QString wktAkAlbers;
};
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