node-pixelate's Introduction

pixelate

Pixelate images

Install

npm install node-pixelate

It's using node-canvas (rather than ImageMagick) and one of the requirements for it is the Cairo canvas implementation, so Cairo needs to be installed. Instructions.

Usage

var fs = require('fs');
var pixelate = require('node-pixelate');

fs.readFile(__dirname + '/images/street.png', function(error, dataBuffer) {
  if (error) throw error;
  pixelate(dataBuffer, {
    // scale down 90 percent (really pixelated). Default: 0.
    scale: 0.9,
    // max width keeping aspect ratio, unless height specified. Default: original width.
    width: 500,
  }, function(error, pixelatedDataBuffer) {
    fs.writeFile(__dirname + '/images/pixelated-street.png', pixelatedDataBuffer, function(error) {
      if (error) throw error;
      console.log('Done.');
    });
  });
});

Requirements

Mac OS X

brew install graphicsmagick

License

MIT

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node-pixelate's Issues

Package cairo was not found in the pkg-config search path.

When trying to run npm i node-pixelate it is returning this error:

Package cairo was not found in the pkg-config search path.
Perhaps you should add the directory containing `cairo.pc'
to the PKG_CONFIG_PATH environment variable
No package 'cairo' found
gyp: Call to './util/has_lib.sh freetype' returned exit status 0 while in binding.gyp. while trying to load binding.gyp
gyp ERR! configure error
gyp ERR! stack Error: `gyp` failed with exit code: 1
gyp ERR! stack     at ChildProcess.onCpExit (/Users/guilhermeu/.nvm/versions/node/v8.9.4/lib/node_modules/npm/node_modules/node-gyp/lib/configure.js:336:16)
gyp ERR! stack     at emitTwo (events.js:126:13)
gyp ERR! stack     at ChildProcess.emit (events.js:214:7)
gyp ERR! stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:198:12)
gyp ERR! System Darwin 17.7.0
gyp ERR! command "/Users/guilhermeu/.nvm/versions/node/v8.9.4/bin/node" "/Users/guilhermeu/.nvm/versions/node/v8.9.4/lib/node_modules/npm/node_modules/node-gyp/bin/node-gyp.js" "rebuild"
gyp ERR! cwd /Users/guilhermeu/Projects/pixelar/node_modules/canvas
gyp ERR! node -v v8.9.4
gyp ERR! node-gyp -v v3.6.2
gyp ERR! not ok

Already tried to install these:

$ brew link cairo --force
$ export PKG_CONFIG_PATH=/usr/x11/lib/pkgconfig
$ export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig/:/usr/X11/lib/pkgconfig

Nothing is working, does anybody know how to install?

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