2d to 3d

This topic contains 1 reply, has 2 voices, and was last updated by  Xmas 8 years, 5 months ago.

Viewing 2 posts - 1 through 2 (of 2 total)
  • Author
    Posts
  • #29801

    binoymvDas
    Member

    Hi,

    its a general 3d problem, i have a rectangular polygon, and its rendered on the screen. Any one tell me, in the rendered geometry on the screen howmch length a pixel curresponds to the real 3d space. I mean any specific formula for that……….?consider the polygon is at different depths in the 3d space..
    #33067

    Xmas
    Member

    It depends on your projection matrix, how do you set it up? The length in world space that corresponds to one pixel in screen space is directly proportional to the distance from the viewer in world space. I.e. a line twice as long at twice the distance will be the same length on screen.

Viewing 2 posts - 1 through 2 (of 2 total)
You must be logged in to reply to this topic.