Jump to content
  • Advertisement
Sign in to follow this  

ROAM again: wedgies

This topic is 4890 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

I am trying to understand the ROAM algorithm and managed to do that till part 6 about the error metrics. Mark et.al. introduce the wedgies, and there is where the light goes off. I understand the concept of the wedgie: a volume around a triangle (and eventualy its children) with some tickness Et. They then state that w(v) = (vx, vy, z(v)) where (vx, vy) are the domain coordinates and z(v) is the hight at v. Then they introduce the affine heightmap for a bintree triangle T to be zt(x,y). I dont understand what this affine exactly means, and thus what the differences are between z(v) and zt(x,y). Is the only difference that the first takes a point and the other an (x,y) pair? Thanks already for the help.

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!