std::string Polygon::validReason() const
{
int gtype = GEOSGeomTypeId_r(m_ctx, m_geom);
if (gtype != GEOS_POLYGON && gtype != GEOS_MULTIPOLYGON)
return std::string("Geometry is not Polygon or MultiPolygon");
char *reason = GEOSisValidReason_r(m_ctx, m_geom);
std::string output(reason);
GEOSFree_r(m_ctx, reason);
return output;
}
void Crop::ready(PointContext ctx)
{
#ifdef PDAL_HAVE_GEOS
if (!m_poly.empty())
{
m_geosEnvironment = initGEOS_r(pdal::geos::_GEOSWarningHandler,
pdal::geos::_GEOSErrorHandler);
m_geosGeometry = GEOSGeomFromWKT_r(m_geosEnvironment, m_poly.c_str());
if (!m_geosGeometry)
throw pdal_error("unable to import polygon WKT");
int gtype = GEOSGeomTypeId_r(m_geosEnvironment, m_geosGeometry);
if (!(gtype == GEOS_POLYGON || gtype == GEOS_MULTIPOLYGON))
throw pdal_error("input WKT was not a POLYGON or MULTIPOLYGON");
char* out_wkt = GEOSGeomToWKT_r(m_geosEnvironment, m_geosGeometry);
log()->get(LogLevel::Debug2) << "Ingested WKT for filters.crop: " <<
std::string(out_wkt) <<std::endl;
GEOSFree_r(m_geosEnvironment, out_wkt);
if (!GEOSisValid_r(m_geosEnvironment, m_geosGeometry))
{
char* reason =
GEOSisValidReason_r(m_geosEnvironment, m_geosGeometry);
std::ostringstream oss;
oss << "WKT is invalid: " << std::string(reason) << std::endl;
GEOSFree_r(m_geosEnvironment, reason);
throw pdal_error(oss.str());
}
m_geosPreparedGeometry =
GEOSPrepare_r(m_geosEnvironment, m_geosGeometry);
if (!m_geosPreparedGeometry)
throw pdal_error("unable to prepare geometry for "
"index-accelerated intersection");
m_bounds = computeBounds(m_geosGeometry);
log()->get(LogLevel::Debug) << "Computed bounds from given WKT: " <<
m_bounds <<std::endl;
}
else
{
log()->get(LogLevel::Debug) << "Using simple bounds for "
"filters.crop: " << m_bounds << std::endl;
}
#endif
}
