Jump to content
  • Advertisement

Archived

This topic is now archived and is closed to further replies.

Riviera Kid

Polygon Normal help

This topic is 5276 days old which is more than the 365 day threshold we allow for new replies. Please post a new topic.

If you intended to correct an error in the post then please contact us.

Recommended Posts

Hi. In my 3d program i have polygons made from 3 points to form a triangle. These points have no angles. How do i get the normal for these polygons. Im confused by the tutorials.

Share this post


Link to post
Share on other sites
Advertisement
Take the first two sides of the triangle as vectors, for example, if the triangle looks like ABC clockwise from the outside of the object, take two vectors A -> B and B -> C, and find the cross product of them.

This will be a normal - depending on what you want to use it for you may have to normalise it.

Mark

Share this post


Link to post
Share on other sites

  • Advertisement
×

Important Information

By using GameDev.net, you agree to our community Guidelines, Terms of Use, and Privacy Policy.

We are the game development community.

Whether you are an indie, hobbyist, AAA developer, or just trying to learn, GameDev.net is the place for you to learn, share, and connect with the games industry. Learn more About Us or sign up!

Sign me up!