static enum protoCmd render(struct xmlmapconfig * map, int x, int y, int z, metaTile &tiles)
{
int render_size_tx = MIN(METATILE, map->prj->aspect_x * (1 << z));
int render_size_ty = MIN(METATILE, map->prj->aspect_y * (1 << z));
map->map.resize(render_size_tx*map->tilesize, render_size_ty*map->tilesize);
map->map.zoom_to_box(tile2prjbounds(map->prj, x, y, z));
if (map->map.buffer_size() == 0) { // Only set buffer size if the buffer size isn't explicitly set in the mapnik stylesheet.
map->map.set_buffer_size(128);
}
//m.zoom(size+1);
mapnik::image_32 buf(render_size_tx*map->tilesize, render_size_ty*map->tilesize);
try {
mapnik::agg_renderer<mapnik::image_32> ren(map->map,buf);
ren.apply();
} catch (std::exception const& ex) {
syslog(LOG_ERR, "ERROR: failed to render TILE %s %d %d-%d %d-%d", map->xmlname, z, x, x+render_size_tx-1, y, y+render_size_ty-1);
syslog(LOG_ERR, " reason: %s", ex.what());
return cmdNotDone;
}
// Split the meta tile into an NxN grid of tiles
unsigned int xx, yy;
for (yy = 0; yy < render_size_ty; yy++) {
for (xx = 0; xx < render_size_tx; xx++) {
mapnik::image_view<mapnik::image_data_32> vw(xx * map->tilesize, yy * map->tilesize, map->tilesize, map->tilesize, buf.data());
tiles.set(xx, yy, save_to_string(vw, "png256"));
}
}
return cmdDone; // OK
}
static enum protoCmd render(Map &m, char *xmlname, projection &prj, int x, int y, int z, unsigned int size, metaTile &tiles)
{
int render_size = 256 * size;
double p0x = x * 256;
double p0y = (y + size) * 256;
double p1x = (x + size) * 256;
double p1y = y * 256;
//std::cout << "META TILE " << z << " " << x << "-" << x+size-1 << " " << y << "-" << y+size-1 << "\n";
tiling.fromPixelToLL(p0x, p0y, z);
tiling.fromPixelToLL(p1x, p1y, z);
prj.forward(p0x, p0y);
prj.forward(p1x, p1y);
mapnik::box2d<double> bbox(p0x, p0y, p1x,p1y);
m.resize(render_size, render_size);
m.zoom_to_box(bbox);
m.set_buffer_size(128);
//m.zoom(size+1);
mapnik::image_32 buf(render_size, render_size);
mapnik::agg_renderer<mapnik::image_32> ren(m,buf);
ren.apply();
// Split the meta tile into an NxN grid of tiles
unsigned int xx, yy;
for (yy = 0; yy < size; yy++) {
for (xx = 0; xx < size; xx++) {
mapnik::image_view<mapnik::image_data_32> vw(xx * 256, yy * 256, 256, 256, buf.data());
tiles.set(xx, yy, save_to_string(vw, "png256"));
}
}
// std::cout << "DONE TILE " << xmlname << " " << z << " " << x << "-" << x+size-1 << " " << y << "-" << y+size-1 << "\n";
syslog(LOG_DEBUG, "DEBUG: DONE TILE %s %d %d-%d %d-%d", xmlname, z, x, x+size-1, y, y+size-1);
return cmdDone; // OK
}