Figure 4. Setting the Stereo Window within Bryce Now, where is the leaf C? It has moved to the left. To place the stereo window at the depth of C, we have to get C back to where it was before the camera moved: back into the lower right corner. This is done by shifting the canvas, or "panning" (the Bryce term). Use the hand tool (depress space bar, click-drag mouse) to shift the canvas back horizontally until C is back where it started. (figure 4.) Check the camera settings dialog box by double-clicking the trackball. You should see a positive H pan value and a zero V pan value. If V pan is non-zero, just set it to zero and OK the dialog. (figure 5.) Figure 5. When you start a render from this new camera position, you will see more of the scene along the left edge of the screen, and less of the scene along the right edge. Save this file and render as your Right viewpoint. Note: the astute reader may suggest here that the effect of all these steps can be achieved more easily by simply rotating the scene in front of a stationary camera. To some extent this is true; however, using scene rotation to generate stereo pairs creates a geometric perspective distortion (called "keystoning") between the pair that will reduce comfort and interfere with the accurate spatial perception when 3d viewing the scene. AFTER RENDERING After rendering the two viewpoints, simply bring both rendered picts into Photoshop and set them next to one another. For parallel eye stereo pairs, as the one shown in this tutorial, make sure that the total image is no more than five inches wide. You can also make cross-eyed stereo pairs, where the left eye image is placed on the right, and the right image placed on the left. Cross eyed pairs have the advantage that one can print them much larger, and they can still be free-viewed cross-eyed. For a tutorial on cross-eyed free viewing, visit my web gallery help page: http://www.starosta.com/3dshowcase/ihelp.html Conclusions.

|- H o m e -|- P o r t r a i t s -|- T E C H N O B O T -|- C O M W O R K -|

Unless otherwise noted, all contents of this page, individual or
aggregate, are copyright 2000 Boris Starosta.  All rights reserved. 
Unauthorized duplication is a violation of applicable laws, and is
destructive of free enterprise, creative expression, and the human
spirit.

All other product names mentioned in these pages are used
for identification purposes only, and may be trademarks or
registered trademarks of their respective companies
and the exclusive property of their respective owners