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Add tileMargin option

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stefslon
2019-08-08 21:57:51 -04:00
parent e44104254e
commit 17a73b1d4a
2 changed files with 13 additions and 1 deletions
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11
src/serve_rendered.js
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@@ -407,6 +407,13 @@ module.exports = function(options, repo, params, id, publicUrl, dataResolver) {
params.width *= 2;
params.height *= 2;
}
var tileMargin = Math.max(options.tileMargin || 0, 0);
if (z > 2 && tileMargin > 0) {
params.width += tileMargin * 2 * scale;
params.height += tileMargin * 2 * scale;
}
renderer.render(params, function(err, data) {
pool.release(renderer);
if (err) {
@@ -421,6 +428,10 @@ module.exports = function(options, repo, params, id, publicUrl, dataResolver) {
channels: 4
}
});
if (z > 2 && tileMargin > 0) {
image.extract({ left: tileMargin * scale, top: tileMargin * scale, width: width * scale, height: height * scale });
}
if (z == 0) {
// HACK: when serving zoom 0, resize the 0 tile from 512 to 256