void Mosaic::initialize()
{
MultiFilter::initialize();
const std::vector<Stage*>& stages = getPrevStages();
const Stage& stage0 = *stages[0];
const SpatialReference& srs0 = stage0.getSpatialReference();
const Schema& schema0 = stage0.getSchema();
PointCountType pointCountType0 = stage0.getPointCountType();
boost::uint64_t totalPoints = stage0.getNumPoints();
Bounds<double> bigbox(stage0.getBounds());
// we will only mosaic if all the stages have the same core properties: SRS, schema, etc
for (boost::uint32_t i=1; i<stages.size(); i++)
{
Stage& stage = *(stages[i]);
if (stage.getSpatialReference() != srs0)
throw impedance_invalid("mosaicked stages must have same srs");
if (stage.getSchema() != schema0)
throw impedance_invalid("mosaicked stages must have same schema");
if (stage.getPointCountType() == PointCount_Unknown)
pointCountType0 = PointCount_Unknown;
totalPoints += stage.getNumPoints();
bigbox.grow(stage.getBounds());
}
if (pointCountType0 == PointCount_Unknown)
totalPoints = 0;
setCoreProperties(stage0);
setPointCountType(pointCountType0);
setNumPoints(totalPoints);
return;
}
void Reprojection::checkImpedance()
{
const Schema& schema = this->getSchema();
boost::optional<Dimension const&> x = schema.getDimension("X");
boost::optional<Dimension const&> y = schema.getDimension("Y");
boost::optional<Dimension const&> z = schema.getDimension("Z");
if (!(x->getByteSize() != 8) ||
!(y->getByteSize() != 8) ||
!(z->getByteSize() != 8) )
{
throw impedance_invalid("Reprojection filter requires X,Y,Z dimensions as doubles");
}
return;
}
