Jump to content
  • Advertisement
Sign in to follow this  
Shawn619

Getting 2d coords from 3d object

This topic is 1851 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

Like in tf2, I'm wanting to use the technique of displaying bullet damage in an FPS game by way on 2d text above where the bullet hits the target in 3d like so:

 

2nrhk74.jpg

 

My only problem is that I don't know how to translate this 3d position of where the bullet hit into 2d. Any ideas?

Share this post


Link to post
Share on other sites
Advertisement

Most frameworks or libraries have a method to transform a 3dvector.

Vector3 temp = Vector3.Transfom(3dposition, view * projection);
 
Vector2 screenPosition = new Vector2(temp.x, temp.y);

Share this post


Link to post
Share on other sites
You could try to look upsome tutorials on 'picking' (that's the technique your describing).
It is/ can be based on 'shooting a ray' from the camera position through space, and looking which objects/ meshes you're intersecting

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!