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Expose depth option for tile-based output (#1342)

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This commit is contained in:
Alun Davies
2018-08-18 22:09:53 +08:00
committed by Lovell Fuller
parent d705cffdd6
commit b5b95e5ae1
5 changed files with 285 additions and 11 deletions
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10
lib/output.js
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@@ -423,6 +423,7 @@ function toFormat (format, options) {
* @param {Number} [tile.size=256] tile size in pixels, a value between 1 and 8192.
* @param {Number} [tile.overlap=0] tile overlap in pixels, a value between 0 and 8192.
* @param {Number} [tile.angle=0] tile angle of rotation, must be a multiple of 90.
* @param {String} [tile.depth] depth to shrink tiles, with value 'onepixel', 'onetile' or 'one', default based on layout
* @param {String} [tile.container='fs'] tile container, with value `fs` (filesystem) or `zip` (compressed file).
* @param {String} [tile.layout='dz'] filesystem layout, possible values are `dz`, `zoomify` or `google`.
* @returns {Sharp}
@@ -474,6 +475,15 @@ function tile (tile) {
throw new Error('Unsupported angle: angle must be a positive/negative multiple of 90 ' + tile.angle);
}
}
// Depth of tiles
if (is.defined(tile.depth)) {
if (is.string(tile.depth) && is.inArray(tile.depth, ['onepixel', 'onetile', 'one'])) {
this.options.tileDepth = tile.depth;
} else {
throw new Error("Invalid tile depth '" + tile.depth + "', should be one of 'onepixel', 'onetile' or 'one'");
}
}
}
// Format
if (is.inArray(this.options.formatOut, ['jpeg', 'png', 'webp'])) {