75 lines
2.2 KiB
JavaScript
75 lines
2.2 KiB
JavaScript
function newOutputImageName(format = 'png') {
|
|
const random_id = Math.floor(Math.random() * 100000000000 + 1) // Date.now() doesn't have enough resolution to avoid duplicate
|
|
const image_name = `output- ${Date.now()}-${random_id}.${format}`
|
|
console.log('generated image name:', image_name)
|
|
return image_name
|
|
}
|
|
|
|
function makeImagePath(format = 'png') {
|
|
const image_name = newOutputImageName(format)
|
|
const image_path = `${uniqueDocumentId}/${image_name}`
|
|
return image_path
|
|
}
|
|
function convertImageNameToPng(image_name) {
|
|
const image_png_name = image_name.split('.')[0] + '.png'
|
|
return image_png_name
|
|
}
|
|
function fixNativePath(native_path) {
|
|
const fixed_native_path = native_path.replaceAll('\\', '/')
|
|
|
|
return fixed_native_path
|
|
}
|
|
function base64ToBase64Url(base64_image) {
|
|
return 'data:image/png;base64,' + base64_image
|
|
}
|
|
function base64UrlToBase64(base64_url) {
|
|
const base64_image = base64_url.replace('data:image/png;base64,', '')
|
|
return base64_image
|
|
}
|
|
const timer = (ms) => new Promise((res) => setTimeout(res, ms)) //Todo: move this line to it's own utilit function
|
|
function scaleToRatio(
|
|
new_value_1,
|
|
old_value_1,
|
|
new_value_2, //get ignored
|
|
old_value_2,
|
|
max_value,
|
|
min_value
|
|
) {
|
|
const ratio = new_value_1 / old_value_1 // 1000/500 = 2
|
|
let final_new_value_2 = old_value_2 * ratio // 500 * 2 = 1000
|
|
let final_new_value_1 = new_value_1
|
|
if (final_new_value_2 > max_value) {
|
|
;[_, final_new_value_1] = scaleToRatio(
|
|
max_value,
|
|
old_value_2,
|
|
new_value_1, //get ignored
|
|
old_value_1,
|
|
max_value,
|
|
min_value
|
|
)
|
|
final_new_value_2 = max_value
|
|
} else if (final_new_value_2 < min_value) {
|
|
;[_, final_new_value_1] = scaleToRatio(
|
|
min_value,
|
|
old_value_2,
|
|
new_value_1, //get ignored
|
|
old_value_1,
|
|
max_value,
|
|
min_value
|
|
)
|
|
final_new_value_2 = min_value
|
|
}
|
|
|
|
return [final_new_value_1, final_new_value_2]
|
|
}
|
|
|
|
module.exports = {
|
|
newOutputImageName,
|
|
makeImagePath,
|
|
convertImageNameToPng,
|
|
fixNativePath,
|
|
base64ToBase64Url,
|
|
base64UrlToBase64,
|
|
scaleToRatio,
|
|
}
|