Results 1 to 4 of 4

Thread: image projection

  1. #1
    Junior Member Newbie
    Join Date
    Dec 2002
    Posts
    15

    image projection

    Hello there,
    I was wondering if anyone could help me out with an image projection question. I am wanting to be able to project a bitmap image onto a poly(s) in the fashion that a slide projector would project an image onto a wall. I want this to happen in 3D (of course) and thus I want to be able to move the "slide projector" around and have the projection on the wall respect the movement of the projector and related perspective. I don't need any other illumination or color on the poly except the projected image. I found a single example of source code in the code area of this site but it is quite undocumented within the meat of the code and I would rather be able to understand what is going on than just hack some code together and hope it works. I searched for "image projection" and "texture projection" on Google and neither seemed to meet my needs directly. Does anyone know the exact term for this technique as well as a good source that would explain the technique from the ground up? Even a textbook on the subject would be great. any help would be really appreciated.

    Thanks in advance
    Josh

  2. #2
    Super Moderator OpenGL Guru imported_dorbie's Avatar
    Join Date
    Jul 2000
    Location
    Bay Area, CA, USA
    Posts
    3,966

    Re: image projection

    I have some explanation here that might help:
    http://www.dorbie.com/uav.html

    It's mostly OpenGL stuff and explains texture projection.

  3. #3
    Junior Member Newbie
    Join Date
    Dec 2002
    Posts
    15

    Re: image projection

    Thank's for the link.
    I will take a look.

    Josh

  4. #4
    Senior Member Regular Contributor
    Join Date
    Jun 2002
    Location
    Philadelphia, PA, US
    Posts
    108

    Re: image projection

    nvidia has a document in their sdk repository about projective texture mapping. you might find it useful.

Similar Threads

  1. Replies: 1
    Last Post: 05-17-2018, 03:58 AM
  2. Using modelview/projection matrix to do a projection myself
    By AllForum in forum OpenGL: Basic Coding
    Replies: 3
    Last Post: 08-30-2012, 07:42 AM
  3. Projection matrix, arbitrary projection plane
    By omdown in forum OpenGL: General
    Replies: 0
    Last Post: 04-01-2010, 07:26 AM
  4. Replies: 1
    Last Post: 01-31-2005, 11:01 AM
  5. Trying to mask parts of 3D quads after projection on a 2D image
    By nicolasv in forum OpenGL: Advanced Coding
    Replies: 0
    Last Post: 11-09-2002, 04:15 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Proudly hosted by Digital Ocean