Jump to content
  • Advertisement
Sign in to follow this  

A problem about screen space coordinate

This topic is 5411 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 I want to project screen space coordinate to 3D space coordinate. I use Pick of DX8 SDK to get the Dist value. Then I calculate the 3D space coordinate as: coordinate = Dist * pRayDir + pRayPos In my map scene 1, it works well. But if i change my scene, it doesn't work. (I do update view matrix, project matrix and world matrix when I change my map scene.) Is there any problem in my equation ? Or I should use D3DXVec3Unproject. If I use D3DXVec3Unproject, how to determine z value at 2nd parameter?? Thanks for reply. ps.Sorry, my english is not good, forgive me, please.

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.

GameDev.net is your game development community. Create an account for your GameDev Portfolio and participate in the largest developer community in the games industry.

Sign me up!