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feat(aklive2d): add protrait images and live2d

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This commit is contained in:
Haoyu Xu
2023-02-25 23:58:09 -05:00
parent 7e2a2a1d40
commit 3eed10772c
17 changed files with 90 additions and 29 deletions
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13
libs/alpha_composite.js
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@@ -3,12 +3,12 @@ import path from "path";
export default class AlphaComposite {
async process(filename, extractedDir) {
async process(filename, maskFilename, extractedDir) {
const image = sharp(path.join(extractedDir, filename))
.removeAlpha()
const imageMeta = await image.metadata()
const imageBuffer = await image.toBuffer()
const mask = await sharp(path.join(extractedDir, `${path.parse(filename).name}[alpha].png`))
const mask = await sharp(path.join(extractedDir, maskFilename))
.extractChannel("blue")
.resize(imageMeta.width, imageMeta.height)
.toBuffer();
@@ -16,7 +16,16 @@ export default class AlphaComposite {
return sharp(imageBuffer)
.joinChannel(mask)
.toBuffer()
}
async crop(buffer, rect) {
const left = rect.y
const top = rect.x
const width = rect.h
const height = rect.w
const rotate = rect.rotate === 0 ? -90 : 0
const newImage = await sharp(buffer).rotate(90).extract({ left: left, top: top, width: width, height: height }).resize(width, height).extract({ left: 0, top: 0, width: width, height: height }).toBuffer()
return await sharp(newImage).rotate(rotate).toBuffer()
}
}