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* The MIT License (MIT)
*
* Copyright (c) 2019 Mark van Seventer
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
// @see https://sharp.pixelplumbing.com/en/stable/api-output/#tile
// Strict mode.
'use strict'
// Local modules.
const constants = require('../lib/constants')
const queue = require('../lib/queue')
// Configure.
const options = {
angle: {
choices: [ 0, 90, 180, 270 ],
default: 0,
desc: 'Tile angle of rotation',
nargs: 1
},
container: {
choices: constants.CONTAINER,
default: 'fs',
desc: 'Tile container',
nargs: 1
},
depth: {
choices: constants.DEPTH,
defaultDescription: 'auto',
desc: 'Pyramid depth',
nargs: 1
},
layout: {
choices: constants.LAYOUT,
default: 'dz',
desc: 'Filesystem layout',
nargs: 1
},
overlap: {
desc: 'Tile overlap in pixels',
defaultDescription: '0',
nargs: 1,
type: 'number'
},
size: {
desc: 'Tile size in pixels',
defaultDescription: 256,
nargs: 1,
type: 'number'
}
}
// Command builder.
const builder = (yargs) => {
const optionNames = Object.keys(options)
return yargs
.strict()
.example('$0 tile 512', 'output.dz is the Deep Zoom XML definition, output_files contains 512×512 tiles grouped by zoom level')
.epilog('For more information on available options, please visit https://sharp.pixelplumbing.com/en/stable/api-output/#tile')
.options(options)
.global(optionNames, false)
.group(optionNames, 'Command Options')
}
// Command handler.
const handler = (args) => {
return queue.push([ 'tile', (sharp) => {
return sharp.tile({
size: args.size,
overlap: args.overlap,
angle: args.angle,
depth: args.depth,
container: args.container,
layout: args.layout
})
}])
}
// Exports.
module.exports = {
command: 'tile [size]',
describe: 'Use tile-based deep zoom (image pyramid) output',
builder,
handler
}
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