void* thread_main(void* unused)
{
projCtx p_proj_ctxt;
projPJ p_WGS84_proj;
projPJ p_OSGB36_proj;
p_proj_ctxt=pj_ctx_alloc();
p_WGS84_proj=pj_init_plus_ctx(p_proj_ctxt,"+proj=longlat "
"+ellps=WGS84 +datum=WGS84 +no_defs");
p_OSGB36_proj=pj_init_plus_ctx(p_proj_ctxt,
"+proj=longlat +ellps=airy +datum=OSGB36 +nadgrids=OSTN02_NTv2.gsb "
"+no_defs");
while(go_on)
{
double x, y;
int proj_ret;
x = -5.2*DEG_TO_RAD;
y = 50*DEG_TO_RAD;
proj_ret = pj_transform(p_WGS84_proj,
p_OSGB36_proj, 1, 1, &x, &y, NULL );
x *= RAD_TO_DEG;
y *= RAD_TO_DEG;
/*printf("%.18f %.18f\n", x, y); */
assert(proj_ret == 0);
assert(fabs(x - -5.198965360936369962) < 1e-15);
assert(fabs(y - 49.999396034285531698) < 1e-15);
}
return NULL;
}
static projPJ* custom_pj_init_plus_ctx(projCtx ctx, const char* def)
{
if( add_no_defs )
{
char szBuffer[256];
strcpy(szBuffer, def);
strcat(szBuffer, " +no_defs");
return pj_init_plus_ctx(ctx, szBuffer);
}
else
return pj_init_plus_ctx(ctx, def);
}
void projection::init_proj4() const
{
#ifdef MAPNIK_USE_PROJ4
if (!proj_)
{
#if PJ_VERSION >= 480
proj_ctx_ = pj_ctx_alloc();
proj_ = pj_init_plus_ctx(proj_ctx_, params_.c_str());
if (!proj_)
{
if (proj_ctx_) {
pj_ctx_free(proj_ctx_);
proj_ctx_ = 0;
}
throw proj_init_error(params_);
}
#else
#if defined(MAPNIK_THREADSAFE)
mapnik::scoped_lock lock(mutex_);
#endif
proj_ = pj_init_plus(params_.c_str());
if (!proj_) throw proj_init_error(params_);
#endif
is_geographic_ = pj_is_latlong(proj_) ? true : false;
}
#endif
}
QPair<projPJ, projPJ> QgsCoordinateTransformPrivate::threadLocalProjData()
{
mProjLock.lockForRead();
#ifdef USE_THREAD_LOCAL
QMap < uintptr_t, QPair< projPJ, projPJ > >::const_iterator it = mProjProjections.constFind( reinterpret_cast< uintptr_t>( mProjContext.get() ) );
#else
projCtx pContext = nullptr;
if ( mProjContext.hasLocalData() )
{
pContext = mProjContext.localData()->get();
}
else
{
mProjContext.setLocalData( new QgsProjContextStore() );
pContext = mProjContext.localData()->get();
}
QMap < uintptr_t, QPair< projPJ, projPJ > >::const_iterator it = mProjProjections.constFind( reinterpret_cast< uintptr_t>( pContext ) );
#endif
if ( it != mProjProjections.constEnd() )
{
QPair<projPJ, projPJ> res = it.value();
mProjLock.unlock();
return res;
}
// proj projections don't exist yet, so we need to create
mProjLock.unlock();
mProjLock.lockForWrite();
#ifdef USE_THREAD_LOCAL
QPair<projPJ, projPJ> res = qMakePair( pj_init_plus_ctx( mProjContext.get(), mSourceProjString.toUtf8() ),
pj_init_plus_ctx( mProjContext.get(), mDestProjString.toUtf8() ) );
mProjProjections.insert( reinterpret_cast< uintptr_t>( mProjContext.get() ), res );
#else
QPair<projPJ, projPJ> res = qMakePair( pj_init_plus_ctx( pContext, mSourceProjString.toUtf8() ),
pj_init_plus_ctx( pContext, mDestProjString.toUtf8() ) );
mProjProjections.insert( reinterpret_cast< uintptr_t>( pContext ), res );
#endif
mProjLock.unlock();
return res;
}
QPair<projPJ, projPJ> QgsCoordinateTransformPrivate::threadLocalProjData()
{
mProjLock.lockForRead();
QMap < uintptr_t, QPair< projPJ, projPJ > >::const_iterator it = mProjProjections.constFind( reinterpret_cast< uintptr_t>( mProjContext.get() ) );
if ( it != mProjProjections.constEnd() )
{
QPair<projPJ, projPJ> res = it.value();
mProjLock.unlock();
return res;
}
// proj projections don't exist yet, so we need to create
mProjLock.unlock();
mProjLock.lockForWrite();
QPair<projPJ, projPJ> res = qMakePair( pj_init_plus_ctx( mProjContext.get(), mSourceProjString.toUtf8() ),
pj_init_plus_ctx( mProjContext.get(), mDestProjString.toUtf8() ) );
mProjProjections.insert( reinterpret_cast< uintptr_t>( mProjContext.get() ), res );
mProjLock.unlock();
return res;
}
PJ *pj_latlong_from_proj( PJ *pj_in )
{
char defn[512];
int got_datum = FALSE;
pj_errno = 0;
strcpy( defn, "+proj=latlong" );
if( pj_param(pj_in->ctx, pj_in->params, "tdatum").i )
{
got_datum = TRUE;
sprintf( defn+strlen(defn), " +datum=%s",
pj_param(pj_in->ctx, pj_in->params,"sdatum").s );
}
else if( pj_param(pj_in->ctx, pj_in->params, "tellps").i )
{
sprintf( defn+strlen(defn), " +ellps=%s",
pj_param(pj_in->ctx, pj_in->params,"sellps").s );
}
else if( pj_param(pj_in->ctx,pj_in->params, "ta").i )
{
sprintf( defn+strlen(defn), " +a=%s",
pj_param(pj_in->ctx,pj_in->params,"sa").s );
if( pj_param(pj_in->ctx,pj_in->params, "tb").i )
sprintf( defn+strlen(defn), " +b=%s",
pj_param(pj_in->ctx,pj_in->params,"sb").s );
else if( pj_param(pj_in->ctx,pj_in->params, "tes").i )
sprintf( defn+strlen(defn), " +es=%s",
pj_param(pj_in->ctx,pj_in->params,"ses").s );
else if( pj_param(pj_in->ctx,pj_in->params, "tf").i )
sprintf( defn+strlen(defn), " +f=%s",
pj_param(pj_in->ctx,pj_in->params,"sf").s );
else
sprintf( defn+strlen(defn), " +es=%.16g",
pj_in->es );
}
else
{
pj_ctx_set_errno( pj_in->ctx, -13 );
return NULL;
}
if( !got_datum )
{
if( pj_param(pj_in->ctx,pj_in->params, "ttowgs84").i )
sprintf( defn+strlen(defn), " +towgs84=%s",
pj_param(pj_in->ctx,pj_in->params,"stowgs84").s );
if( pj_param(pj_in->ctx,pj_in->params, "tnadgrids").i )
sprintf( defn+strlen(defn), " +nadgrids=%s",
pj_param(pj_in->ctx,pj_in->params,"snadgrids").s );
}
/* copy over some other information related to ellipsoid */
if( pj_param(pj_in->ctx,pj_in->params, "tR").i )
sprintf( defn+strlen(defn), " +R=%s",
pj_param(pj_in->ctx,pj_in->params,"sR").s );
if( pj_param(pj_in->ctx,pj_in->params, "tR_A").i )
sprintf( defn+strlen(defn), " +R_A" );
if( pj_param(pj_in->ctx,pj_in->params, "tR_V").i )
sprintf( defn+strlen(defn), " +R_V" );
if( pj_param(pj_in->ctx,pj_in->params, "tR_a").i )
sprintf( defn+strlen(defn), " +R_a" );
if( pj_param(pj_in->ctx,pj_in->params, "tR_lat_a").i )
sprintf( defn+strlen(defn), " +R_lat_a=%s",
pj_param(pj_in->ctx,pj_in->params,"sR_lat_a").s );
if( pj_param(pj_in->ctx,pj_in->params, "tR_lat_g").i )
sprintf( defn+strlen(defn), " +R_lat_g=%s",
pj_param(pj_in->ctx,pj_in->params,"sR_lat_g").s );
/* copy over prime meridian */
if( pj_param(pj_in->ctx,pj_in->params, "tpm").i )
sprintf( defn+strlen(defn), " +pm=%s",
pj_param(pj_in->ctx,pj_in->params,"spm").s );
return pj_init_plus_ctx( pj_in->ctx, defn );
}
static gaiaGeomCollPtr
gaiaTransformCommon (projCtx handle, gaiaGeomCollPtr org, char *proj_from,
char *proj_to)
{
/* creates a new GEOMETRY reprojecting coordinates from the original one */
int ib;
int cnt;
int i;
double *xx;
double *yy;
double *zz;
double *mm = NULL;
double x;
double y;
double z = 0.0;
double m = 0.0;
int error = 0;
int from_angle;
int to_angle;
gaiaPointPtr pt;
gaiaLinestringPtr ln;
gaiaLinestringPtr dst_ln;
gaiaPolygonPtr pg;
gaiaPolygonPtr dst_pg;
gaiaRingPtr rng;
gaiaRingPtr dst_rng;
projPJ from_cs;
projPJ to_cs;
gaiaGeomCollPtr dst;
if (handle != NULL)
{
from_cs = pj_init_plus_ctx (handle, proj_from);
to_cs = pj_init_plus_ctx (handle, proj_to);
}
else
{
from_cs = pj_init_plus (proj_from);
to_cs = pj_init_plus (proj_to);
}
if (!from_cs)
{
if (to_cs)
pj_free (to_cs);
return NULL;
}
if (!to_cs)
{
pj_free (from_cs);
return NULL;
}
if (org->DimensionModel == GAIA_XY_Z)
dst = gaiaAllocGeomCollXYZ ();
else if (org->DimensionModel == GAIA_XY_M)
dst = gaiaAllocGeomCollXYM ();
else if (org->DimensionModel == GAIA_XY_Z_M)
dst = gaiaAllocGeomCollXYZM ();
else
dst = gaiaAllocGeomColl ();
/* setting up projection parameters */
from_angle = gaiaIsLongLat (proj_from);
to_angle = gaiaIsLongLat (proj_to);
cnt = 0;
pt = org->FirstPoint;
while (pt)
{
/* counting POINTs */
cnt++;
pt = pt->Next;
}
if (cnt)
{
/* reprojecting POINTs */
xx = malloc (sizeof (double) * cnt);
yy = malloc (sizeof (double) * cnt);
zz = malloc (sizeof (double) * cnt);
if (org->DimensionModel == GAIA_XY_M
|| org->DimensionModel == GAIA_XY_Z_M)
mm = malloc (sizeof (double) * cnt);
i = 0;
pt = org->FirstPoint;
while (pt)
{
/* inserting points to be converted in temporary arrays */
if (from_angle)
{
xx[i] = gaiaDegsToRads (pt->X);
yy[i] = gaiaDegsToRads (pt->Y);
}
else
{
xx[i] = pt->X;
yy[i] = pt->Y;
}
if (org->DimensionModel == GAIA_XY_Z
|| org->DimensionModel == GAIA_XY_Z_M)
zz[i] = pt->Z;
else
zz[i] = 0.0;
if (org->DimensionModel == GAIA_XY_M
|| org->DimensionModel == GAIA_XY_Z_M)
mm[i] = pt->M;
i++;
pt = pt->Next;
}
/* applying reprojection */
if (pj_transform (from_cs, to_cs, cnt, 0, xx, yy, zz) == 0)
{
/* inserting the reprojected POINTs in the new GEOMETRY */
for (i = 0; i < cnt; i++)
{
if (to_angle)
{
x = gaiaRadsToDegs (xx[i]);
y = gaiaRadsToDegs (yy[i]);
}
else
{
x = xx[i];
y = yy[i];
}
if (org->DimensionModel == GAIA_XY_Z
|| org->DimensionModel == GAIA_XY_Z_M)
z = zz[i];
else
z = 0.0;
if (org->DimensionModel == GAIA_XY_M
|| org->DimensionModel == GAIA_XY_Z_M)
m = mm[i];
else
m = 0.0;
if (dst->DimensionModel == GAIA_XY_Z)
gaiaAddPointToGeomCollXYZ (dst, x, y, z);
else if (dst->DimensionModel == GAIA_XY_M)
gaiaAddPointToGeomCollXYM (dst, x, y, m);
else if (dst->DimensionModel == GAIA_XY_Z_M)
gaiaAddPointToGeomCollXYZM (dst, x, y, z, m);
else
gaiaAddPointToGeomColl (dst, x, y);
}
}
else
error = 1;
free (xx);
free (yy);
free (zz);
if (org->DimensionModel == GAIA_XY_M
|| org->DimensionModel == GAIA_XY_Z_M)
free (mm);
}
if (error)
goto stop;
ln = org->FirstLinestring;
while (ln)
{
/* reprojecting LINESTRINGs */
cnt = ln->Points;
xx = malloc (sizeof (double) * cnt);
yy = malloc (sizeof (double) * cnt);
zz = malloc (sizeof (double) * cnt);
if (ln->DimensionModel == GAIA_XY_M
|| ln->DimensionModel == GAIA_XY_Z_M)
mm = malloc (sizeof (double) * cnt);
for (i = 0; i < cnt; i++)
{
/* inserting points to be converted in temporary arrays */
if (ln->DimensionModel == GAIA_XY_Z)
{
gaiaGetPointXYZ (ln->Coords, i, &x, &y, &z);
}
else if (ln->DimensionModel == GAIA_XY_M)
{
gaiaGetPointXYM (ln->Coords, i, &x, &y, &m);
}
else if (ln->DimensionModel == GAIA_XY_Z_M)
{
gaiaGetPointXYZM (ln->Coords, i, &x, &y, &z, &m);
}
else
{
gaiaGetPoint (ln->Coords, i, &x, &y);
}
if (from_angle)
{
xx[i] = gaiaDegsToRads (x);
yy[i] = gaiaDegsToRads (y);
}
else
{
xx[i] = x;
yy[i] = y;
}
if (ln->DimensionModel == GAIA_XY_Z
|| ln->DimensionModel == GAIA_XY_Z_M)
zz[i] = z;
else
zz[i] = 0.0;
if (ln->DimensionModel == GAIA_XY_M
|| ln->DimensionModel == GAIA_XY_Z_M)
mm[i] = m;
}
/* applying reprojection */
if (pj_transform (from_cs, to_cs, cnt, 0, xx, yy, zz) == 0)
{
/* inserting the reprojected LINESTRING in the new GEOMETRY */
dst_ln = gaiaAddLinestringToGeomColl (dst, cnt);
for (i = 0; i < cnt; i++)
{
/* setting LINESTRING points */
if (to_angle)
{
x = gaiaRadsToDegs (xx[i]);
y = gaiaRadsToDegs (yy[i]);
}
else
{
x = xx[i];
y = yy[i];
}
if (ln->DimensionModel == GAIA_XY_Z
|| ln->DimensionModel == GAIA_XY_Z_M)
z = zz[i];
else
z = 0.0;
if (ln->DimensionModel == GAIA_XY_M
|| ln->DimensionModel == GAIA_XY_Z_M)
m = mm[i];
else
m = 0.0;
if (dst_ln->DimensionModel == GAIA_XY_Z)
{
gaiaSetPointXYZ (dst_ln->Coords, i, x, y, z);
}
else if (dst_ln->DimensionModel == GAIA_XY_M)
{
gaiaSetPointXYM (dst_ln->Coords, i, x, y, m);
}
else if (dst_ln->DimensionModel == GAIA_XY_Z_M)
{
gaiaSetPointXYZM (dst_ln->Coords, i, x, y, z, m);
}
else
{
gaiaSetPoint (dst_ln->Coords, i, x, y);
}
}
}
else
error = 1;
free (xx);
free (yy);
free (zz);
if (ln->DimensionModel == GAIA_XY_M
|| ln->DimensionModel == GAIA_XY_Z_M)
free (mm);
if (error)
goto stop;
ln = ln->Next;
}
pg = org->FirstPolygon;
while (pg)
{
/* reprojecting POLYGONs */
rng = pg->Exterior;
cnt = rng->Points;
dst_pg = gaiaAddPolygonToGeomColl (dst, cnt, pg->NumInteriors);
xx = malloc (sizeof (double) * cnt);
yy = malloc (sizeof (double) * cnt);
zz = malloc (sizeof (double) * cnt);
if (rng->DimensionModel == GAIA_XY_M
|| rng->DimensionModel == GAIA_XY_Z_M)
mm = malloc (sizeof (double) * cnt);
for (i = 0; i < cnt; i++)
{
/* inserting points to be converted in temporary arrays [EXTERIOR RING] */
if (rng->DimensionModel == GAIA_XY_Z)
{
gaiaGetPointXYZ (rng->Coords, i, &x, &y, &z);
}
else if (rng->DimensionModel == GAIA_XY_M)
{
gaiaGetPointXYM (rng->Coords, i, &x, &y, &m);
}
else if (rng->DimensionModel == GAIA_XY_Z_M)
{
gaiaGetPointXYZM (rng->Coords, i, &x, &y, &z, &m);
}
else
{
gaiaGetPoint (rng->Coords, i, &x, &y);
}
if (from_angle)
{
xx[i] = gaiaDegsToRads (x);
yy[i] = gaiaDegsToRads (y);
}
else
{
xx[i] = x;
yy[i] = y;
}
if (rng->DimensionModel == GAIA_XY_Z
|| rng->DimensionModel == GAIA_XY_Z_M)
zz[i] = z;
else
zz[i] = 0.0;
if (rng->DimensionModel == GAIA_XY_M
|| rng->DimensionModel == GAIA_XY_Z_M)
mm[i] = m;
}
/* applying reprojection */
if (pj_transform (from_cs, to_cs, cnt, 0, xx, yy, zz) == 0)
{
/* inserting the reprojected POLYGON in the new GEOMETRY */
dst_rng = dst_pg->Exterior;
for (i = 0; i < cnt; i++)
{
/* setting EXTERIOR RING points */
if (to_angle)
{
x = gaiaRadsToDegs (xx[i]);
y = gaiaRadsToDegs (yy[i]);
}
else
{
x = xx[i];
y = yy[i];
}
if (rng->DimensionModel == GAIA_XY_Z
|| rng->DimensionModel == GAIA_XY_Z_M)
z = zz[i];
else
z = 0.0;
if (rng->DimensionModel == GAIA_XY_M
|| rng->DimensionModel == GAIA_XY_Z_M)
m = mm[i];
else
m = 0.0;
if (dst_rng->DimensionModel == GAIA_XY_Z)
{
gaiaSetPointXYZ (dst_rng->Coords, i, x, y, z);
}
else if (dst_rng->DimensionModel == GAIA_XY_M)
{
gaiaSetPointXYM (dst_rng->Coords, i, x, y, m);
}
else if (dst_rng->DimensionModel == GAIA_XY_Z_M)
{
gaiaSetPointXYZM (dst_rng->Coords, i, x, y, z, m);
}
else
{
gaiaSetPoint (dst_rng->Coords, i, x, y);
}
}
}
else
error = 1;
free (xx);
free (yy);
free (zz);
if (rng->DimensionModel == GAIA_XY_M
|| rng->DimensionModel == GAIA_XY_Z_M)
free (mm);
if (error)
goto stop;
for (ib = 0; ib < pg->NumInteriors; ib++)
{
/* processing INTERIOR RINGS */
rng = pg->Interiors + ib;
cnt = rng->Points;
xx = malloc (sizeof (double) * cnt);
yy = malloc (sizeof (double) * cnt);
zz = malloc (sizeof (double) * cnt);
if (rng->DimensionModel == GAIA_XY_M
|| rng->DimensionModel == GAIA_XY_Z_M)
mm = malloc (sizeof (double) * cnt);
for (i = 0; i < cnt; i++)
{
/* inserting points to be converted in temporary arrays [INTERIOR RING] */
if (rng->DimensionModel == GAIA_XY_Z)
{
gaiaGetPointXYZ (rng->Coords, i, &x, &y, &z);
}
else if (rng->DimensionModel == GAIA_XY_M)
{
gaiaGetPointXYM (rng->Coords, i, &x, &y, &m);
}
else if (rng->DimensionModel == GAIA_XY_Z_M)
{
gaiaGetPointXYZM (rng->Coords, i, &x, &y, &z, &m);
}
else
{
gaiaGetPoint (rng->Coords, i, &x, &y);
}
if (from_angle)
{
xx[i] = gaiaDegsToRads (x);
yy[i] = gaiaDegsToRads (y);
}
else
{
xx[i] = x;
yy[i] = y;
}
if (rng->DimensionModel == GAIA_XY_Z
|| rng->DimensionModel == GAIA_XY_Z_M)
zz[i] = z;
else
zz[i] = 0.0;
if (rng->DimensionModel == GAIA_XY_M
|| rng->DimensionModel == GAIA_XY_Z_M)
mm[i] = m;
}
/* applying reprojection */
if (pj_transform (from_cs, to_cs, cnt, 0, xx, yy, zz) == 0)
{
/* inserting the reprojected POLYGON in the new GEOMETRY */
dst_rng = gaiaAddInteriorRing (dst_pg, ib, cnt);
for (i = 0; i < cnt; i++)
{
/* setting INTERIOR RING points */
if (to_angle)
{
x = gaiaRadsToDegs (xx[i]);
y = gaiaRadsToDegs (yy[i]);
}
else
{
x = xx[i];
y = yy[i];
}
if (rng->DimensionModel == GAIA_XY_Z
|| rng->DimensionModel == GAIA_XY_Z_M)
z = zz[i];
else
z = 0.0;
if (rng->DimensionModel == GAIA_XY_M
|| rng->DimensionModel == GAIA_XY_Z_M)
m = mm[i];
else
m = 0.0;
if (dst_rng->DimensionModel == GAIA_XY_Z)
{
gaiaSetPointXYZ (dst_rng->Coords, i, x, y, z);
}
else if (dst_rng->DimensionModel == GAIA_XY_M)
{
gaiaSetPointXYM (dst_rng->Coords, i, x, y, m);
}
else if (dst_rng->DimensionModel == GAIA_XY_Z_M)
{
gaiaSetPointXYZM (dst_rng->Coords, i, x, y, z,
m);
}
else
{
gaiaSetPoint (dst_rng->Coords, i, x, y);
}
}
}
else
error = 1;
free (xx);
free (yy);
free (zz);
if (rng->DimensionModel == GAIA_XY_M
|| rng->DimensionModel == GAIA_XY_Z_M)
free (mm);
if (error)
goto stop;
}
pg = pg->Next;
}
/* destroying the PROJ4 params */
stop:
pj_free (from_cs);
pj_free (to_cs);
if (error)
{
/* some error occurred */
gaiaPointPtr pP;
gaiaPointPtr pPn;
gaiaLinestringPtr pL;
gaiaLinestringPtr pLn;
gaiaPolygonPtr pA;
gaiaPolygonPtr pAn;
pP = dst->FirstPoint;
while (pP != NULL)
{
pPn = pP->Next;
gaiaFreePoint (pP);
pP = pPn;
}
pL = dst->FirstLinestring;
while (pL != NULL)
{
pLn = pL->Next;
gaiaFreeLinestring (pL);
pL = pLn;
}
pA = dst->FirstPolygon;
while (pA != NULL)
{
pAn = pA->Next;
gaiaFreePolygon (pA);
pA = pAn;
}
dst->FirstPoint = NULL;
dst->LastPoint = NULL;
dst->FirstLinestring = NULL;
dst->LastLinestring = NULL;
dst->FirstPolygon = NULL;
dst->LastPolygon = NULL;
}
if (dst)
{
gaiaMbrGeometry (dst);
dst->DeclaredType = org->DeclaredType;
}
return dst;
}
PJ *
pj_init_plus( const char *definition )
{
return pj_init_plus_ctx( pj_get_default_ctx(), definition );
}
void QgsCustomProjectionDialog::pbnCalculate_clicked()
{
// We must check the prj def is valid!
projCtx pContext = pj_ctx_alloc();
projPJ proj = pj_init_plus_ctx( pContext, teParameters->toPlainText().toLocal8Bit().data() );
QgsDebugMsg( QString( "Proj: %1" ).arg( teParameters->toPlainText() ) );
if ( !proj )
{
QMessageBox::information( this, tr( "QGIS Custom Projection" ),
tr( "This proj4 projection definition is not valid." ) );
projectedX->clear();
projectedY->clear();
pj_free( proj );
pj_ctx_free( pContext );
return;
}
// Get the WGS84 coordinates
bool okN, okE;
double northing = northWGS84->text().toDouble( &okN ) * DEG_TO_RAD;
double easting = eastWGS84->text().toDouble( &okE ) * DEG_TO_RAD;
if ( !okN || !okE )
{
QMessageBox::information( this, tr( "QGIS Custom Projection" ),
tr( "Northing and Easthing must be in decimal form." ) );
projectedX->clear();
projectedY->clear();
pj_free( proj );
pj_ctx_free( pContext );
return;
}
projPJ wgs84Proj = pj_init_plus_ctx( pContext, GEOPROJ4.toLocal8Bit().data() ); //defined in qgis.h
if ( !wgs84Proj )
{
QMessageBox::information( this, tr( "QGIS Custom Projection" ),
tr( "Internal Error (source projection invalid?)" ) );
projectedX->clear();
projectedY->clear();
pj_free( wgs84Proj );
pj_ctx_free( pContext );
return;
}
double z = 0.0;
int projResult = pj_transform( wgs84Proj, proj, 1, 0, &easting, &northing, &z );
if ( projResult != 0 )
{
projectedX->setText( tr( "Error" ) );
projectedY->setText( tr( "Error" ) );
QgsDebugMsg( pj_strerrno( projResult ) );
}
else
{
QString tmp;
int precision = 4;
if ( pj_is_latlong( proj ) )
{
northing *= RAD_TO_DEG;
easting *= RAD_TO_DEG;
precision = 7;
}
tmp = QLocale::system().toString( northing, 'f', precision );
projectedX->setText( tmp );
tmp = QLocale::system().toString( easting, 'f', precision );
projectedY->setText( tmp );
}
pj_free( proj );
pj_free( wgs84Proj );
pj_ctx_free( pContext );
}
void run(const TProjection& p,
const ForwardIterableInputRange& x,
const ForwardIterableInputRange& y,
ForwardIterableOutputRange& out_x,
ForwardIterableOutputRange& out_y) const {
size_t sx = boost::size(x);
// data sanity
assert(sx == boost::size(y));
assert(boost::size(y) == boost::size(out_x));
assert(boost::size(out_x) == boost::size(out_y));
std::string from = projection_to_string(p.from);
std::string to = projection_to_string(p.to);
auto compute = [&p, &from, &to](double *x, double *y, double *z,
size_t stride, size_t point_count) {
projCtx ctx = pj_ctx_alloc();
projPJ pj_in = pj_init_plus_ctx(ctx, from.c_str()),
pj_out = pj_init_plus_ctx(ctx, to.c_str());
assert(pj_in != NULL);
assert(pj_out != NULL);
detail::pre_process(p.from, x, y, point_count);
// fasten your seatbelts
pj_transform(pj_in, pj_out,
static_cast<long>(point_count),
static_cast<int>(stride),
x, y, NULL);
pj_free(pj_in);
pj_free(pj_out);
pj_ctx_free(ctx);
detail::post_process(p.to, x, y, point_count);
};
typedef typename boost::range_iterator<ForwardIterableOutputRange>::type iterator;
typedef typename boost::range_const_iterator<ForwardIterableInputRange>::type const_iterator;
// projcl does in-place transforms, so move all input values to output
const_iterator bx = boost::begin(x),
by = boost::begin(y);
iterator ox = boost::begin(out_x),
oy = boost::begin(out_y);
std::copy(bx, boost::end(x), ox);
std::copy(by, boost::end(y), oy);
utility::scheduler<MaxConcurrency> c;
unsigned max_threads = c.concurrency();
size_t per_batch = sx / max_threads;
size_t offset = 0;
for (unsigned i = 0 ; i < max_threads ; i ++) {
double *x = &(*(ox + offset));
double *y = &(*(oy + offset));
double *z = NULL;
c.queue(compute, x, y, z, 1, per_batch);
offset += per_batch;
}
c.wait();
}
static void TestThread()
{
int i, test_count = sizeof(test_list) / sizeof(TestItem);
int repeat_count = num_iterations;
int i_iter;
/* -------------------------------------------------------------------- */
/* Initialize coordinate system definitions. */
/* -------------------------------------------------------------------- */
projPJ *src_pj_list, *dst_pj_list;
projCtx ctx = pj_ctx_alloc();
// projCtx ctx = pj_get_default_ctx();
src_pj_list = (projPJ *) calloc(test_count,sizeof(projPJ));
dst_pj_list = (projPJ *) calloc(test_count,sizeof(projPJ));
#if reinit_every_iteration == 0
for( i = 0; i < test_count; i++ )
{
TestItem *test = test_list + i;
src_pj_list[i] = pj_init_plus_ctx( ctx, test->src_def );
dst_pj_list[i] = pj_init_plus_ctx( ctx, test->dst_def );
}
#endif
/* -------------------------------------------------------------------- */
/* Perform tests - over and over. */
/* -------------------------------------------------------------------- */
for( i_iter = 0; i_iter < repeat_count; i_iter++ )
{
for( i = 0; i < test_count; i++ )
{
TestItem *test = test_list + i;
double x, y, z;
int error;
int skipTest = test->skip;
x = test->src_x;
y = test->src_y;
z = test->src_z;
#if reinit_every_iteration == 1
src_pj_list[i] = pj_init_plus_ctx( ctx, test->src_def );
dst_pj_list[i] = pj_init_plus_ctx( ctx, test->dst_def );
{
int skipTest = (src_pj_list[i] == NULL || dst_pj_list[i] == NULL);
if ( skipTest != test->skip )
fprintf( stderr, "Threaded projection initialization does not match unthreaded initialization\n" );
if (skipTest)
{
pj_free( src_pj_list[i] );
pj_free( dst_pj_list[i] );
continue;
}
}
#endif
if ( test->skip )
continue;
error = pj_transform( src_pj_list[i], dst_pj_list[i], 1, 0,
&x, &y, &z );
if( error != test->dst_error )
{
fprintf( stderr, "Got error %d, expected %d\n",
error, test->dst_error );
}
if( x != test->dst_x || y != test->dst_y || z != test->dst_z )
{
fprintf( stderr,
"Got %.15g,%.15g,%.15g\n"
"Expected %.15g,%.15g,%.15g\n",
x, y, z,
test->dst_x, test->dst_y, test->dst_z );
}
#if reinit_every_iteration == 1
pj_free( src_pj_list[i] );
pj_free( dst_pj_list[i] );
#endif
}
}
/* -------------------------------------------------------------------- */
/* Cleanup */
/* -------------------------------------------------------------------- */
#if reinit_every_iteration == 0
for( i = 0; i < test_count; i++ )
{
pj_free( src_pj_list[i] );
pj_free( dst_pj_list[i] );
}
#endif
free( src_pj_list );
free( dst_pj_list );
pj_ctx_free( ctx );
printf( "%d iterations of the %d tests complete in thread X\n",
repeat_count, test_count );
active_thread_count--;
}