BOX3D computeBounds(GEOSContextHandle_t ctx, GEOSGeometry const *geometry)
{
uint32_t numInputDims;
BOX3D output;
GEOSGeometry const* ring = GEOSGetExteriorRing_r(ctx,
geometry);
GEOSCoordSequence const* coords = GEOSGeom_getCoordSeq_r(ctx,
ring);
GEOSCoordSeq_getDimensions_r(ctx, coords, &numInputDims);
uint32_t count(0);
GEOSCoordSeq_getSize_r(ctx, coords, &count);
double x(0.0);
double y(0.0);
double z(0.0);
for (unsigned i = 0; i < count; ++i)
{
GEOSCoordSeq_getOrdinate_r(ctx, coords, i, 0, &x);
GEOSCoordSeq_getOrdinate_r(ctx, coords, i, 1, &y);
if (numInputDims > 2)
GEOSCoordSeq_getOrdinate_r(ctx, coords, i, 2, &z);
output.grow(x, y, z);
}
return output;
}
BOX3D Polygon::bounds() const
{
uint32_t numInputDims;
BOX3D output;
GEOSGeometry* boundary = GEOSGeom_clone_r(m_ctx, m_geom);
// Smash out multi*
if (GEOSGeomTypeId_r(m_ctx, m_geom) > 3)
boundary = GEOSEnvelope_r(m_ctx, m_geom);
GEOSGeometry const* ring = GEOSGetExteriorRing_r(m_ctx, boundary);
GEOSCoordSequence const* coords = GEOSGeom_getCoordSeq_r(m_ctx, ring);
GEOSCoordSeq_getDimensions_r(m_ctx, coords, &numInputDims);
uint32_t count(0);
GEOSCoordSeq_getSize_r(m_ctx, coords, &count);
double x(0.0);
double y(0.0);
double z(0.0);
for (unsigned i = 0; i < count; ++i)
{
GEOSCoordSeq_getOrdinate_r(m_ctx, coords, i, 0, &x);
GEOSCoordSeq_getOrdinate_r(m_ctx, coords, i, 1, &y);
if (numInputDims > 2)
GEOSCoordSeq_getOrdinate_r(m_ctx, coords, i, 2, &z);
output.grow(x, y, z);
}
GEOSGeom_destroy_r(m_ctx, boundary);
return output;
}
BOX3D Crop::computeBounds(GEOSGeometry const *geometry)
{
uint32_t numInputDims;
BOX3D output;
#ifdef PDAL_HAVE_GEOS
GEOSGeometry const* ring = GEOSGetExteriorRing_r(m_geosEnvironment,
geometry);
GEOSCoordSequence const* coords = GEOSGeom_getCoordSeq_r(m_geosEnvironment,
ring);
GEOSCoordSeq_getDimensions_r(m_geosEnvironment, coords, &numInputDims);
log()->get(LogLevel::Debug) << "Inputted WKT had " << numInputDims <<
" dimensions" <<std::endl;
uint32_t count(0);
GEOSCoordSeq_getSize_r(m_geosEnvironment, coords, &count);
double x(0.0);
double y(0.0);
double z(0.0);
for (unsigned i = 0; i < count; ++i)
{
GEOSCoordSeq_getOrdinate_r(m_geosEnvironment, coords, i, 0, &x);
GEOSCoordSeq_getOrdinate_r(m_geosEnvironment, coords, i, 1, &y);
if (numInputDims > 2)
GEOSCoordSeq_getOrdinate_r(m_geosEnvironment, coords, i, 2, &z);
output.grow(x, y, z);
}
#else
boost::ignore_unused_variable_warning(geometry);
#endif
return output;
}
void Point::update(const std::string& wkt_or_json, SpatialReference ref)
{
Geometry::update(wkt_or_json, ref);
int t = GEOSGeomTypeId_r(m_geoserr.ctx(), m_geom.get());
if (t == -1)
throw pdal_error("Unable to fetch geometry point type");
if (t > 0)
throw pdal_error("Geometry type is not point!");
int nGeometries = GEOSGetNumGeometries_r(m_geoserr.ctx(), m_geom.get());
if (nGeometries > 1)
throw pdal_error("Geometry count is > 1!");
const GEOSGeometry* g = GEOSGetGeometryN_r(m_geoserr.ctx(), m_geom.get(), 0);
GEOSCoordSequence const* coords = GEOSGeom_getCoordSeq_r(m_geoserr.ctx(), g);
uint32_t numInputDims;
GEOSCoordSeq_getDimensions_r(m_geoserr.ctx(), coords, &numInputDims);
uint32_t count(0);
GEOSCoordSeq_getSize_r(m_geoserr.ctx(), coords, &count);
if (count == 0)
throw pdal_error("No coordinates in geometry!");
for (unsigned i = 0; i < count; ++i)
{
GEOSCoordSeq_getOrdinate_r(m_geoserr.ctx(), coords, i, 0, &x);
GEOSCoordSeq_getOrdinate_r(m_geoserr.ctx(), coords, i, 1, &y);
if (numInputDims > 2)
GEOSCoordSeq_getOrdinate_r(m_geoserr.ctx(), coords, i, 2, &z);
}
}
Q_NOWARN_UNREACHABLE_POP
// Return Nth vertex in GEOSGeometry as a POINT.
// May return NULL if the geometry has NO vertexex.
static GEOSGeometry *LWGEOM_GEOS_getPointN( const GEOSGeometry *g_in, uint32_t n )
{
GEOSContextHandle_t handle = QgsGeos::getGEOSHandler();
uint32_t dims;
const GEOSCoordSequence *seq_in = nullptr;
GEOSCoordSeq seq_out;
double val;
uint32_t sz;
int gn;
GEOSGeometry *ret = nullptr;
switch ( GEOSGeomTypeId_r( handle, g_in ) )
{
case GEOS_MULTIPOINT:
case GEOS_MULTILINESTRING:
case GEOS_MULTIPOLYGON:
case GEOS_GEOMETRYCOLLECTION:
{
for ( gn = 0; gn < GEOSGetNumGeometries_r( handle, g_in ); ++gn )
{
const GEOSGeometry *g = GEOSGetGeometryN_r( handle, g_in, gn );
ret = LWGEOM_GEOS_getPointN( g, n );
if ( ret ) return ret;
}
break;
}
case GEOS_POLYGON:
{
ret = LWGEOM_GEOS_getPointN( GEOSGetExteriorRing_r( handle, g_in ), n );
if ( ret ) return ret;
for ( gn = 0; gn < GEOSGetNumInteriorRings_r( handle, g_in ); ++gn )
{
const GEOSGeometry *g = GEOSGetInteriorRingN_r( handle, g_in, gn );
ret = LWGEOM_GEOS_getPointN( g, n );
if ( ret ) return ret;
}
break;
}
case GEOS_POINT:
case GEOS_LINESTRING:
case GEOS_LINEARRING:
break;
}
seq_in = GEOSGeom_getCoordSeq_r( handle, g_in );
if ( ! seq_in ) return nullptr;
if ( ! GEOSCoordSeq_getSize_r( handle, seq_in, &sz ) ) return nullptr;
if ( ! sz ) return nullptr;
if ( ! GEOSCoordSeq_getDimensions_r( handle, seq_in, &dims ) ) return nullptr;
seq_out = GEOSCoordSeq_create_r( handle, 1, dims );
if ( ! seq_out ) return nullptr;
if ( ! GEOSCoordSeq_getX_r( handle, seq_in, n, &val ) ) return nullptr;
if ( ! GEOSCoordSeq_setX_r( handle, seq_out, n, val ) ) return nullptr;
if ( ! GEOSCoordSeq_getY_r( handle, seq_in, n, &val ) ) return nullptr;
if ( ! GEOSCoordSeq_setY_r( handle, seq_out, n, val ) ) return nullptr;
if ( dims > 2 )
{
if ( ! GEOSCoordSeq_getZ_r( handle, seq_in, n, &val ) ) return nullptr;
if ( ! GEOSCoordSeq_setZ_r( handle, seq_out, n, val ) ) return nullptr;
}
return GEOSGeom_createPoint_r( handle, seq_out );
}