Readme

.eslintrc

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+{
+  "rules": {
+    "no-console": "off",
+    "indent": [ "error", 2 ],
+    "quotes": [ "error", "single" ],
+    "semi": ["error", "always"],
+    "linebreak-style": [ "error", "unix" ]
+  },
+  "env": {
+    "es6": true,
+    "node": true,
+    "mocha": true,
+    "jasmine": true
+  },
+  "ecmaFeatures": {
+    "modules": true,
+    "experimentalObjectRestSpread": true,
+    "impliedStrict": true
+  },
+  "extends": "eslint:recommended"
+}

.gitignore

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+
+# Created by https://www.gitignore.io/api/macos,node,vim,vim
+
+### macOS ###
+*.DS_Store
+.AppleDouble
+.LSOverride
+
+# Icon must end with two \r
+Icon
+# Thumbnails
+._*
+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.icns
+.com.apple.timemachine.donotpresent
+# Directories potentially created on remote AFP share
+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
+.apdisk
+
+
+### Node ###
+# Logs
+logs
+*.log
+npm-debug.log*
+node_modules
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (http://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules
+jspm_packages
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+
+
+### Vim ###
+# swap
+[._]*.s[a-w][a-z]
+[._]s[a-w][a-z]
+# session
+Session.vim
+# temporary
+.netrwhist
+*~
+# auto-generated tag files
+tags
+
+
+### Vim ###
+# swap
+# session
+# temporary
+# auto-generated tag files
+
+### project specific ###
+temp
+img/test.bmp

gulpfile.js

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+'use strict';
+
+const gulp = require('gulp');
+const eslint = require('gulp-eslint');
+const mocha = require('gulp-mocha');
+
+gulp.task('test', function() {
+  gulp.src('./test/*-test.js', { read: false })
+  .pipe(mocha({ reporter: 'spec' }));
+});
+
+gulp.task('lint', function() {
+  return gulp.src(['**/*.js', '!node_modules'])
+  .pipe(eslint())
+  .pipe(eslint.format())
+  .pipe(eslint.failAfterError());
+});
+
+gulp.task('dev', function() {
+  gulp.watch(['**/*.js', '!node_modules'], ['lint', 'task']);
+});
+
+gulp.task('default', ['dev']);

index.js

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+'use strict';
+
+const bmHelper = require('./lib/bitmap-file-helper.js');
+const transforms = require('./model/transform-constructor.js');
+
+//TODO: I suggest we change bitMapData to bitmap. -Geoff
+bmHelper.load('./img/palette-bitmap.bmp', function(err, bitMapData) {
+  // console.log(bitMapData.colors[28]);
+  // console.dir(bitMapData);
+  // for(var prop in bitMapData) {
+  //   console.log(prop);
+  // }
+  console.log(bitMapData.getColorArray());
+  console.log(bitMapData.getPixelArray());
+
+  // bmHelper.save('./img/test.bmp', bitMapData, function(err, data) {
+  //   if(err) console.log('error:', err); //TODO: Just log for test
+  //   console.log('data:', data);
+  // });
+
+  // makeBlackAndSave(bitMapData);
+  // rotateRightAndSave(bitMapData);
+  // rotate180AndSave(bitMapData);
+  switchColorAndSave(bitMapData);
+});
+
+function switchColorAndSave(bitmap) {
+  // var colors = bitmap.getColorArray();
+  var white = {
+    red: 255,
+    blue: 255,
+    green: 255,
+    alpha: 0
+  };
+  // colors[0] = white;
+  // bitmap.setColorArray(colors);
+  bitmap.transform(transforms.swapColor(0, white));
+  bmHelper.save('./temp/color-swap.bmp', bitmap, function(err) {
+    if(err) console.log(err);
+    console.log('saved color swap');
+  });
+}
+
+function rotate180AndSave(bitmap) {
+  bitmap.transform(transforms.rotate(180));
+  bmHelper.save('./temp/rotated-180.bmp', bitmap, function(err) {
+    if(err) console.log(err);
+    console.log('saved rotated 180 bmp');
+  });
+}
+
+function rotateRightAndSave(bitmap) {
+  bitmap.transform(transforms.rotateRight);
+  bmHelper.save('./temp/rotated-90.bmp', bitmap, function(err, data) {
+    if(err) console.log(err);
+    console.log('done saving rotated data:', data);
+  });
+}
+
+function makeBlackAndSave(bitmap) {
+  var pixels = bitmap.getPixelArray();
+  for(let i in pixels) {
+    pixels[i] = 0; //Setting all pixels to color 0.
+  }
+  bitmap.setPixelArray(pixels);
+  bmHelper.save('./temp/black.bmp', bitmap, function(err, data) {
+    if(err) console.log(err);
+    console.log('done saving data:', data);
+  });
+
+}

lib/bitmap-file-helper.js

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+'use strict';
+
+const fs = require('fs');
+const Bitmap = require('../model/bitmap-constructor.js').Bitmap;
+
+module.exports = exports = {};
+
+exports.load = function(filepath, callback) {
+  fs.readFile(filepath, function (err, data) {
+    if(err) return callback(err);
+    var bm = new Bitmap(data);
+    //TODO: Possibly store filepath in the bm object, or pass as
+    //      constructor param.
+    callback(null, bm);
+  });
+};
+
+exports.save = function(filepath, bitmap, callback) {
+  fs.writeFile(filepath, bitmap.buf, function(err, data) {
+    if(err) return callback(err);
+    callback(null, data);
+  });
+};