Jump to content
  • Advertisement

Archived

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

pag

frustum question

This topic is 5543 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

How do I get the view triangle from the frustum? I mean the view triangle on the x,z axis... / PatG

Share this post


Link to post
Share on other sites
Advertisement
in which form? you know the field of view and the aspect ratio, so the rest is simple math. in camera space the points would be:

camera.position (obviously)
(-(tan(fov/2)*aspect)*far, 0, far)
(+(tan(fov/2)*aspect)*far, 0, far)

in world coordinates multiply the cameras forward vector with "far" and either subtract or add its right-vector*''above x coord''

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.

Participate in the game development conversation and more when you create an account on GameDev.net!

Sign me up!