Jump to content
  • Advertisement
Sign in to follow this  
SpacedOut

OpenGL What's the best way to keep an OpenGL object from moving off the screen?

This topic is 4734 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

Let's say i have a 3d shape and I want it to move around, but I don't want it to move off the screen, what's the best way to have it bounce off the edges? I'm using SDL as my API.

Share this post


Link to post
Share on other sites
Advertisement
Easiest is to just use an orthogonal view so that the frustum planes are axis aligned then if (x<minx) x=2*minx-x for the left plane and similarly for the other planes. You havet to reverse the appropriate component of the velocity or you'll hit the wall then slide along it.

Share this post


Link to post
Share on other sites
Sign in to follow this  

  • 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!