如何使用https://github.com/rsms/node-imagemagick在图片周围添加更多空白区域?
示例原始图像为width:300, height:100
,我想生成新图像为width: 600, height: 200
原始图像在中心保留原始大小,添加周围的空白区域成为新图像..
我尝试下面的代码,但这使得原始图像变成600 * 200 ......如何解决?
function cropGravity(srcFilePath, dstFilePath, resizeWidth, resizeHeight, quality, gravity) {
return new Promise(function (resolve, reject){
im.crop({
srcPath: srcFilePath,
dstPath: dstFilePath,
width: resizeWidth,
height: resizeHeight,
quality: quality,
gravity: gravity
}, function(error, stdout, stderr){
if (error != null) {
console.log(error)
reject(error);
} else {
resolve(dstFilePath);
}
});
});
};
...
var resizeWidth = 600;
var resizeHeight = 200;
var quality = 1;
var gravity = 'Center';
cropGravity(srcFilePath, dstFilePath, resizeWidth, resizeHeight, quality, gravity)
答案 0 :(得分:3)
我真的不会说node
,但它可能与此类似:
im.convert(['input.jpg', '-gravity', 'center', '-background','white', '-extent', '600x200','result.jpg'],
function(err, stdout){
if (err) throw err;
console.log('stdout:', stdout);
});