Fabio/tileserver-gl
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

fix: test tileMargin

Browse source 
Signed-off-by: Andrew Calcutt <acalcutt@techidiots.net>
This commit is contained in:
Andrew Calcutt 2024-01-28 23:53:38 -05:00
parent 48568728ab
commit df2b8b3c3e
1 changed files with 4 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
src/serve_rendered.js
View file

@ -424,14 +424,14 @@ const respondImage = (
height, height,
}; };
// HACK(Part 1) to allow for zoom 0 256px images. (z - 1) used byt 256 tiles would be -1, which isn't support. Instead a double size image is requested from zoom 0 and it is later resized. // HACK(Part 1) 256px tiles are a zoom level lower than maplibre-native default tiles. this hack allows tileserver-gl to support zoom 0 256px tiles, which would actually be zoom -1 in maplibre-native. Since zoom -1 isn't supported, a double sized zoom 0 tile is requested and resized in Part 2.
if (z === 0 && width === 256) { if (z === 0 && width === 256) {
params.width *= 2; params.width *= 2;
params.height *= 2; params.height *= 2;
} }
// END HACK(Part 1) // END HACK(Part 1)
if (((z > 2 && width === 256) || (z > 1 && width === 512)) && tileMargin > 0) { if (z > 0 && tileMargin > 0) {
params.width += tileMargin * 2; params.width += tileMargin * 2;
params.height += tileMargin * 2; params.height += tileMargin * 2;
} }
@ -452,7 +452,7 @@ const respondImage = (
}, },
}); });
if (((z > 2 && width === 256) || (z > 1 && width === 512)) && tileMargin > 0) { if (z > 0 && tileMargin > 0) {
let y let y
let yoffset let yoffset
if (width === 512) { if (width === 512) {
@ -470,7 +470,7 @@ const respondImage = (
}); });
} }
// HACK(Part 2) to allow for zoom 0 256px images. (z - 1) used byt 256 tiles would be -1, which isn't support. Instead a double size image is requested from zoom 0 and it is resized here. // END HACK(Part 2) 256px tiles are a zoom level lower than maplibre-native default tiles. this hack allows tileserver-gl to support zoom 0 256px tiles, which would actually be zoom -1 in maplibre-native. Since zoom -1 isn't supported, a double sized zoom 0 tile is requested and resized here.
if ((z === 0 && width === 256)) { if ((z === 0 && width === 256)) {
image.resize(width * scale, height * scale); image.resize(width * scale, height * scale);
} }