javascriptgraphicsgeometrycomputational-geometrypseudocode
How to compute an angle between 2 vectors in a polygon
I implemented a method in javascript to compute the angle between 2 vectors. But I don't know how to compute the angle that lies in the polygon.
For example, in this image I want to compute the red angle but in the left one I need to go from AC to AB while in the right one I need to do it from AB to AC.
Thank you for your response
Solution
From the question I understand that you need values of red (internal) angles. It is easy to get them knowing order. For CCW order find directed angle between two consecutive edge vectors. In the first case vectors are BA/AC, in the second CA/AB
To get directed angle in full 2*Pi (360 degrees) range, you can use atan2 function
Fi_left = atan2 (crossproduct(BA, AC), dotproduct(BA, AC))
Fi_right = atan2 (crossproduct(CA, AB), dotproduct(CA, AB))
- Chunk downloading of the big files right to the hard drive
- My custom CSS transition animation is not working on hover after I added AOS JS library
- how to get the Google analytics client ID
- Toggle vue-multiselect close/open on button click
- Best way to filter an objects's properties for data
- Passing function with arguments as a prop and invoking it internally in React
- Outlook calendar don't render with FullCalendar
- Is there a way to validate and allow only https url's using .isUri i.e. without using Regex in JavaScript?
- How to clear react native webview cookies?
- Skipping a test in Cypress conditionally
- How can I get all the HTML in a document or node containing shadowRoot elements
- Typescript: No index signature with a parameter of type 'string' was found on type '{ "A": string; }
- Retain Twitter Bootstrap Collapse state on Page refresh/Navigation
- How to get "Results per Row" (from a 'clicked entry' off a "dropdown menu") to show up correctly?
- Is there is a C# function which is similar to .Map() in JavaScript?
- How to trigger SVG render same as manual DOM edit in Chrome using JS?
- How do I test a Node.JS Script that is not a module and runs as soon as it's called?
- Set element width based on a string that is not in the element
- Testing JavaScript Written for the Browser in Node JS
- Where are the trailing commas coming from in these radio buttons?
- How to verify a signature from the Phantom wallet?
- How to get the value of a Google Chrome flag using Javascript
- event.preventDefault cannot block clipboard paste in chatgpt.com prompt box
- Should I use ref or findDOMNode to get react root dom node of an element?
- Disable button for 5 seconds with different label and change after it
- JavaScript - Get all but last item in array
- React-Redux: Should all component states be kept in Redux Store
- Is it possible to use Closure Compiler ADVANCED_OPTIMIZATIONS with jQuery?
- Capture selected option returns not defined instead
- Uncaught TypeError: matchExpr[type].exec is not a function