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Add resize algorithm option

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This commit is contained in:
j433866 2019-02-20 15:35:53 +00:00
parent 9f4aa0a123
commit 0d86a7e427
1 changed files with 23 additions and 2 deletions
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25
src/core/operations/ResizeImage.mjs
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@ -48,6 +48,18 @@ class ResizeImage extends Operation {
name: "Maintain aspect ratio", name: "Maintain aspect ratio",
type: "boolean", type: "boolean",
value: false value: false
},
{
name: "Resizing algorithm",
type: "option",
value: [
"Nearest Neighbour",
"Bilinear",
"Bicubic",
"Hermite",
"Bezier"
],
defaultIndex: 1
} }
]; ];
} }
@ -62,8 +74,17 @@ class ResizeImage extends Operation {
height = args[1]; height = args[1];
const unit = args[2], const unit = args[2],
aspect = args[3], aspect = args[3],
resizeAlg = args[4],
type = Magic.magicFileType(input); type = Magic.magicFileType(input);
const resizeMap = {
"Nearest Neighbour": jimp.RESIZE_NEAREST_NEIGHBOR,
"Bilinear": jimp.RESIZE_BILINEAR,
"Bicubic": jimp.RESIZE_BICUBIC,
"Hermite": jimp.RESIZE_HERMITE,
"Bezier": jimp.RESIZE_BEZIER
};
if (!type || type.mime.indexOf("image") !== 0){ if (!type || type.mime.indexOf("image") !== 0){
throw new OperationError("Invalid file type."); throw new OperationError("Invalid file type.");
} }
@ -74,9 +95,9 @@ class ResizeImage extends Operation {
height = image.getHeight() * (height / 100); height = image.getHeight() * (height / 100);
} }
if (aspect) { if (aspect) {
image.scaleToFit(width, height); image.scaleToFit(width, height, resizeMap[resizeAlg]);
} else { } else {
image.resize(width, height); image.resize(width, height, resizeMap[resizeAlg]);
} }
const imageBuffer = await image.getBufferAsync(jimp.AUTO); const imageBuffer = await image.getBufferAsync(jimp.AUTO);