javascript(ultra32): added rotate

Signed-off-by: prescientmoon <git@moonythm.dev>

javascript/ultra32/.gitignore

@@ -1,61 +1,3 @@
-# Logs
+node_modules
-logs
+app.ts
-*.log
+tsconfig.json
-npm-debug.log*
-yarn-debug.log*
-yarn-error.log*
-
-# 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
-
-# Bower dependency directory (https://bower.io/)
-bower_components
-
-# node-waf configuration
-.lock-wscript
-
-# Compiled binary addons (https://nodejs.org/api/addons.html)
-build/Release
-
-# Dependency directories
-node_modules/
-jspm_packages/
-
-# TypeScript v1 declaration files
-typings/
-
-# 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
-
-# dotenv environment variables file
-.env
-
-# next.js build output
-.next

javascript/ultra32/app.js

@@ -35,3 +35,10 @@ function mirror(vector) {
     return vector;
 }
 exports.mirror = mirror;
+function rotate(vector) {
+    const oldx = vector[0];
+    vector[0] = Math.cos(vector[0]) - Math.sin(vector[1]);
+    vector[1] = Math.sin(oldx) + Math.cos(vector[1]);
+    return vector;
+}
+exports.rotate = rotate;