void feature_style_processor<Processor>::apply(mapnik::layer const& lyr,
std::set<std::string>& names,
double scale_denom)
{
Processor & p = static_cast<Processor&>(*this);
p.start_map_processing(m_);
projection proj(m_.srs(),true);
if (scale_denom <= 0.0)
scale_denom = mapnik::scale_denominator(m_.scale(),proj.is_geographic());
scale_denom *= p.scale_factor();
if (lyr.visible(scale_denom))
{
apply_to_layer(lyr,
p,
proj,
m_.scale(),
scale_denom,
m_.width(),
m_.height(),
m_.get_current_extent(),
m_.buffer_size(),
names);
}
p.end_map_processing(m_);
}
void apply()
{
#ifdef MAPNIK_DEBUG
//mapnik::wall_clock_progress_timer t(std::clog, "map rendering took: ");
#endif
Processor & p = static_cast<Processor&>(*this);
p.start_map_processing(m_);
try
{
projection proj(m_.srs()); // map projection
Map::const_metawriter_iterator metaItr = m_.begin_metawriters();
Map::const_metawriter_iterator metaItrEnd = m_.end_metawriters();
for (;metaItr!=metaItrEnd; ++metaItr)
{
metaItr->second->set_size(m_.width(), m_.height());
metaItr->second->set_map_srs(proj);
metaItr->second->start(m_.metawriter_output_properties);
}
double scale_denom = mapnik::scale_denominator(m_,proj.is_geographic());
scale_denom *= scale_factor_;
#ifdef MAPNIK_DEBUG
std::clog << "scale denominator = " << scale_denom << "\n";
#endif
BOOST_FOREACH ( layer const& lyr, m_.layers() )
{
if (lyr.isVisible(scale_denom))
{
apply_to_layer(lyr, p, proj, scale_denom);
}
}
metaItr = m_.begin_metawriters();
for (;metaItr!=metaItrEnd; ++metaItr)
{
metaItr->second->stop();
}
}
catch (proj_init_error& ex)
{
std::clog << "proj_init_error:" << ex.what() << "\n";
}
p.end_map_processing(m_);
}
void apply()
{
timer clock;
Processor & p = static_cast<Processor&>(*this);
p.start_map_processing(m_);
std::vector<Layer>::const_iterator itr = m_.layers().begin();
while (itr != m_.layers().end())
{
if (itr->isVisible(m_.scale()) &&
itr->envelope().intersects(m_.getCurrentExtent()))
{
apply_to_layer(*itr,p);
}
++itr;
}
p.end_map_processing(m_);
clock.stop();
}