void parseGrid(mapcache_context *ctx, ezxml_t node, mapcache_cfg *config)
{
char *name;
mapcache_extent extent = {0,0,0,0};
mapcache_grid *grid;
ezxml_t cur_node;
char *value;
name = (char*)ezxml_attr(node,"name");
if(!name || !strlen(name)) {
ctx->set_error(ctx, 400, "mandatory attribute \"name\" not found in <grid>");
return;
} else {
name = apr_pstrdup(ctx->pool, name);
/* check we don't already have a grid defined with this name */
if(mapcache_configuration_get_grid(config, name)) {
ctx->set_error(ctx, 400, "duplicate grid with name \"%s\"",name);
return;
}
}
grid = mapcache_grid_create(ctx->pool);
grid->name = name;
if ((cur_node = ezxml_child(node,"extent")) != NULL) {
double *values;
int nvalues;
value = apr_pstrdup(ctx->pool,cur_node->txt);
if(MAPCACHE_SUCCESS != mapcache_util_extract_double_list(ctx, value, NULL, &values, &nvalues) ||
nvalues != 4) {
ctx->set_error(ctx, 400, "failed to parse extent array %s."
"(expecting 4 space separated numbers, got %d (%f %f %f %f)"
"eg <extent>-180 -90 180 90</extent>",
value,nvalues,values[0],values[1],values[2],values[3]);
return;
}
extent.minx = values[0];
extent.miny = values[1];
extent.maxx = values[2];
extent.maxy = values[3];
}
if ((cur_node = ezxml_child(node,"metadata")) != NULL) {
parseMetadata(ctx, cur_node, grid->metadata);
GC_CHECK_ERROR(ctx);
}
if ((cur_node = ezxml_child(node,"units")) != NULL) {
if(!strcasecmp(cur_node->txt,"dd")) {
grid->unit = MAPCACHE_UNIT_DEGREES;
} else if(!strcasecmp(cur_node->txt,"m")) {
grid->unit = MAPCACHE_UNIT_METERS;
} else if(!strcasecmp(cur_node->txt,"ft")) {
grid->unit = MAPCACHE_UNIT_FEET;
} else {
ctx->set_error(ctx, 400, "unknown unit %s for grid %s (valid values are \"dd\", \"m\", and \"ft\"",
cur_node->txt, grid->name);
return;
}
}
if ((cur_node = ezxml_child(node,"srs")) != NULL) {
grid->srs = apr_pstrdup(ctx->pool,cur_node->txt);
}
for(cur_node = ezxml_child(node,"srsalias"); cur_node; cur_node = cur_node->next) {
value = apr_pstrdup(ctx->pool,cur_node->txt);
APR_ARRAY_PUSH(grid->srs_aliases,char*) = value;
}
if ((cur_node = ezxml_child(node,"origin")) != NULL) {
if(!strcasecmp(cur_node->txt,"top-left")) {
grid->origin = MAPCACHE_GRID_ORIGIN_TOP_LEFT;
} else if(!strcasecmp(cur_node->txt,"bottom-left")) {
grid->origin = MAPCACHE_GRID_ORIGIN_BOTTOM_LEFT;
} else if(!strcasecmp(cur_node->txt,"top-right")) {
grid->origin = MAPCACHE_GRID_ORIGIN_TOP_RIGHT;
} else if(!strcasecmp(cur_node->txt,"bottom-right")) {
grid->origin = MAPCACHE_GRID_ORIGIN_BOTTOM_RIGHT;
} else {
ctx->set_error(ctx, 400,
"unknown origin %s for grid %s (valid values are \"top-left\", \"bottom-left\", \"top-right\" and \"bottom-right\"",
cur_node->txt, grid->name);
return;
}
if(grid->origin == MAPCACHE_GRID_ORIGIN_BOTTOM_RIGHT || grid->origin == MAPCACHE_GRID_ORIGIN_TOP_RIGHT) {
ctx->set_error(ctx,500,"grid origin %s not implemented",cur_node->txt);
return;
}
}
if ((cur_node = ezxml_child(node,"size")) != NULL) {
int *sizes, nsizes;
value = apr_pstrdup(ctx->pool,cur_node->txt);
if(MAPCACHE_SUCCESS != mapcache_util_extract_int_list(ctx, value, NULL, &sizes, &nsizes) ||
nsizes != 2) {
ctx->set_error(ctx, 400, "failed to parse size array %s in grid %s"
"(expecting two space separated integers, eg <size>256 256</size>",
value, grid->name);
return;
}
grid->tile_sx = sizes[0];
grid->tile_sy = sizes[1];
}
if ((cur_node = ezxml_child(node,"resolutions")) != NULL) {
int nvalues;
double *values;
value = apr_pstrdup(ctx->pool,cur_node->txt);
if(MAPCACHE_SUCCESS != mapcache_util_extract_double_list(ctx, value, NULL, &values, &nvalues) ||
!nvalues) {
ctx->set_error(ctx, 400, "failed to parse resolutions array %s."
"(expecting space separated numbers, "
"eg <resolutions>1 2 4 8 16 32</resolutions>",
value);
return;
}
grid->nlevels = nvalues;
grid->levels = (mapcache_grid_level**)apr_pcalloc(ctx->pool,
grid->nlevels*sizeof(mapcache_grid_level));
while(nvalues--) {
double unitheight;
double unitwidth;
mapcache_grid_level *level = (mapcache_grid_level*)apr_pcalloc(ctx->pool,sizeof(mapcache_grid_level));
level->resolution = values[nvalues];
unitheight = grid->tile_sy * level->resolution;
unitwidth = grid->tile_sx * level->resolution;
level->maxy = ceil((extent.maxy-extent.miny - 0.01* unitheight)/unitheight);
level->maxx = ceil((extent.maxx-extent.minx - 0.01* unitwidth)/unitwidth);
grid->levels[nvalues] = level;
}
}
if(grid->srs == NULL) {
ctx->set_error(ctx, 400, "grid \"%s\" has no srs configured."
" You must add a <srs> tag.", grid->name);
return;
}
if(extent.minx >= extent.maxx || extent.miny >= extent.maxy) {
ctx->set_error(ctx, 400, "grid \"%s\" has no (or invalid) extent configured"
" You must add/correct a <extent> tag.", grid->name);
return;
} else {
grid->extent = extent;
}
if(grid->tile_sx <= 0 || grid->tile_sy <= 0) {
ctx->set_error(ctx, 400, "grid \"%s\" has no (or invalid) tile size configured"
" You must add/correct a <size> tag.", grid->name);
return;
}
if(!grid->nlevels) {
ctx->set_error(ctx, 400, "grid \"%s\" has no resolutions configured."
" You must add a <resolutions> tag.", grid->name);
return;
}
mapcache_configuration_add_grid(config,grid,name);
}
mapcache_cfg* mapcache_configuration_create(apr_pool_t *pool)
{
mapcache_grid *grid;
int i;
double wgs84_resolutions[18]= {
0.703125000000000,
0.351562500000000,
0.175781250000000,
8.78906250000000e-2,
4.39453125000000e-2,
2.19726562500000e-2,
1.09863281250000e-2,
5.49316406250000e-3,
2.74658203125000e-3,
1.37329101562500e-3,
6.86645507812500e-4,
3.43322753906250e-4,
1.71661376953125e-4,
8.58306884765625e-5,
4.29153442382812e-5,
2.14576721191406e-5,
1.07288360595703e-5,
5.36441802978516e-6
};
double google_resolutions[19] = {
156543.0339280410,
78271.51696402048,
39135.75848201023,
19567.87924100512,
9783.939620502561,
4891.969810251280,
2445.984905125640,
1222.992452562820,
611.4962262814100,
305.7481131407048,
152.8740565703525,
76.43702828517624,
38.21851414258813,
19.10925707129406,
9.554628535647032,
4.777314267823516,
2.388657133911758,
1.194328566955879,
0.5971642834779395
};
mapcache_extent wgs84_extent= {-180,-90,180,90};
mapcache_extent google_extent= {-20037508.3427892480,-20037508.3427892480,20037508.3427892480,20037508.3427892480};
double unitwidth,unitheight;
mapcache_cfg *cfg = (mapcache_cfg*)apr_pcalloc(pool, sizeof(mapcache_cfg));
cfg->caches = apr_hash_make(pool);
cfg->sources = apr_hash_make(pool);
cfg->tilesets = apr_hash_make(pool);
cfg->grids = apr_hash_make(pool);
cfg->image_formats = apr_hash_make(pool);
cfg->metadata = apr_table_make(pool,3);
mapcache_configuration_add_image_format(cfg,
mapcache_imageio_create_png_format(pool,"PNG",MAPCACHE_COMPRESSION_FAST),
"PNG");
mapcache_configuration_add_image_format(cfg,
mapcache_imageio_create_png_q_format(pool,"PNG8",MAPCACHE_COMPRESSION_FAST,256),
"PNG8");
mapcache_configuration_add_image_format(cfg,
mapcache_imageio_create_jpeg_format(pool,"JPEG",90,MAPCACHE_PHOTOMETRIC_YCBCR,MAPCACHE_OPTIMIZE_YES),
"JPEG");
mapcache_configuration_add_image_format(cfg,
mapcache_imageio_create_mixed_format(pool,"mixed",
mapcache_configuration_get_image_format(cfg,"PNG"),
mapcache_configuration_get_image_format(cfg,"JPEG"), 255),
"mixed");
cfg->default_image_format = mapcache_configuration_get_image_format(cfg,"mixed");
cfg->reporting = MAPCACHE_REPORT_MSG;
grid = mapcache_grid_create(pool);
grid->name = apr_pstrdup(pool,"WGS84");
apr_table_add(grid->metadata,"title","GoogleCRS84Quad");
apr_table_add(grid->metadata,"wellKnownScaleSet","urn:ogc:def:wkss:OGC:1.0:GoogleCRS84Quad");
apr_table_add(grid->metadata,"profile","global-geodetic");
grid->srs = apr_pstrdup(pool,"EPSG:4326");
grid->unit = MAPCACHE_UNIT_DEGREES;
grid->tile_sx = grid->tile_sy = 256;
grid->nlevels = 18;
grid->extent = wgs84_extent;
grid->levels = (mapcache_grid_level**)apr_pcalloc(pool,
grid->nlevels*sizeof(mapcache_grid_level*));
for(i=0; i<grid->nlevels; i++) {
mapcache_grid_level *level = (mapcache_grid_level*)apr_pcalloc(pool,sizeof(mapcache_grid_level));
level->resolution = wgs84_resolutions[i];
unitheight = grid->tile_sy * level->resolution;
unitwidth = grid->tile_sx * level->resolution;
level->maxy = ceil((grid->extent.maxy-grid->extent.miny - 0.01* unitheight)/unitheight);
level->maxx = ceil((grid->extent.maxx-grid->extent.minx - 0.01* unitwidth)/unitwidth);
grid->levels[i] = level;
}
mapcache_configuration_add_grid(cfg,grid,"WGS84");
grid = mapcache_grid_create(pool);
grid->name = apr_pstrdup(pool,"GoogleMapsCompatible");
grid->srs = apr_pstrdup(pool,"EPSG:3857");
APR_ARRAY_PUSH(grid->srs_aliases,char*) = apr_pstrdup(pool,"EPSG:900913");
apr_table_add(grid->metadata,"title","GoogleMapsCompatible");
apr_table_add(grid->metadata,"profile","global-mercator");
apr_table_add(grid->metadata,"wellKnownScaleSet","urn:ogc:def:wkss:OGC:1.0:GoogleMapsCompatible");
grid->tile_sx = grid->tile_sy = 256;
grid->nlevels = 19;
grid->unit = MAPCACHE_UNIT_METERS;
grid->extent = google_extent;
grid->levels = (mapcache_grid_level**)apr_pcalloc(pool,
grid->nlevels*sizeof(mapcache_grid_level*));
for(i=0; i<grid->nlevels; i++) {
mapcache_grid_level *level = (mapcache_grid_level*)apr_pcalloc(pool,sizeof(mapcache_grid_level));
level->resolution = google_resolutions[i];
unitheight = grid->tile_sy * level->resolution;
unitwidth = grid->tile_sx * level->resolution;
level->maxy = ceil((grid->extent.maxy-grid->extent.miny - 0.01* unitheight)/unitheight);
level->maxx = ceil((grid->extent.maxx-grid->extent.minx - 0.01* unitwidth)/unitwidth);
grid->levels[i] = level;
}
mapcache_configuration_add_grid(cfg,grid,"GoogleMapsCompatible");
grid = mapcache_grid_create(pool);
grid->name = apr_pstrdup(pool,"g");
grid->srs = apr_pstrdup(pool,"EPSG:900913");
APR_ARRAY_PUSH(grid->srs_aliases,char*) = apr_pstrdup(pool,"EPSG:3857");
apr_table_add(grid->metadata,"title","GoogleMapsCompatible");
apr_table_add(grid->metadata,"profile","global-mercator");
apr_table_add(grid->metadata,"wellKnownScaleSet","urn:ogc:def:wkss:OGC:1.0:GoogleMapsCompatible");
grid->tile_sx = grid->tile_sy = 256;
grid->nlevels = 19;
grid->unit = MAPCACHE_UNIT_METERS;
grid->extent = google_extent;
grid->levels = (mapcache_grid_level**)apr_pcalloc(pool,
grid->nlevels*sizeof(mapcache_grid_level*));
for(i=0; i<grid->nlevels; i++) {
mapcache_grid_level *level = (mapcache_grid_level*)apr_pcalloc(pool,sizeof(mapcache_grid_level));
level->resolution = google_resolutions[i];
unitheight = grid->tile_sy * level->resolution;
unitwidth = grid->tile_sx * level->resolution;
level->maxy = ceil((grid->extent.maxy-grid->extent.miny - 0.01* unitheight)/unitheight);
level->maxx = ceil((grid->extent.maxx-grid->extent.minx - 0.01* unitwidth)/unitwidth);
grid->levels[i] = level;
}
mapcache_configuration_add_grid(cfg,grid,"g");
cfg->loglevel = MAPCACHE_WARN;
cfg->autoreload = 0;
return cfg;
}