Attached Link: http://www.renderosity.com/viewed.ez?galleryid=839831&Start=1&Artist=clyde236

Hi All,

I posted an image of a Cloister in my gallery and one comment that comes up is that I used Bryce 5 textures and commentors feel a phototexture would be more effective. The image is at:

http://www.renderosity.com/viewed.ez?galleryid=839831&Start=1&Artist=clyde236

I agree and would like to use phototextures.

Here's my problem/question.

1. When I apply a photo as texture, Bryce scales it to fit the shape and size of the object. For example, I have a photo that is square in shape applied to a rectangular object. Bryce stretches it and scales it to the object.

It didn't used to do this, but no matteer what I try (repeat tiling, scale tiling, altering the image size in the texture editor) I wind up with the stretch factor-- making the photo useless. I must have got something wrong here, but I can't figure it out. I have tried parametric, parametric scaled and so on with this in object and world space.

As I recall, I have been able to make a photo tile in the past, but I can't remember how I got it to work.

Any tips or tutorials out there?

2. When I DID get a photo to tile, I noticed that tiling a photo runs into the problem of tile edging not aligning, so it is very clear that the surface is using a repeating pattern. There's a trick to making a photo so this doesn't occur. I think I saw a tut some time ago about this one also, but I can't find it now.

Anyone got any leads on this? I've got about 300 photo textures (you know that a lot come on the Bryce 5 disc-- don't you-- there are a lot of goodies packed into the disc) from various programs besides just Bryce but they have this tiling problem.

Thanks for any help you can provide!

Message edited on: 12/22/2004 14:42

Adjust the scale of the texture in the Texture Editor. Bryce loads photo-tex at a default scale of 0. Try increasing the scale along an axis (Bryce will tile the tex along the axis you chose). Hope this helps. :)

Parametric kills you in terms of stretch factor. I almost never use it with photo textures unless the photo is close to the size and shape of the object. I typcally start with Object Cubic. It gives me scaling control along all three axis. The quick fix for tiling a photo texture (I don't have time to do a pic for this at the moment but)... if this is your picture with edges A and B: A------B Go to your image editor and make a duplicate, flip it and align the two images thus: A------B B------A That show repeat but not a disrupted tile on the horizontal axis. If you next make a copy of the pair, flip it upside down and move the new "flipped pair" above the original pair...it tiles vertically as well. Again, you'll still see repeats, but not the obvious seams.

Attached Link: http://www.geocities.com/asperen290573/tutorials/tutorial1.html

And an excellent tut from Roobol on how to turn a single image into a tileable texture. This takes more time but works better than the down and dirty method above.

When you plan to photo texture for a sky prop, use the 2D Face primitive. By default it measures 20.48 X 20.48, a square. To make the photo fit perfectly you need to know the aspect ratio of the photo. Dividing the width of the image by its height gets the aspect ratio. For instance, 800/600=1.33, 640/480=1.33, 300/200=1.5 and so on. This information you can get from most any image editor or viewer. You can also get this information when you import the photo in the 2D picture editor by right mouse clicking and hitting properties then the summary tab you should see the images specs including its width and height. The 2D Face should have the same aspect ratio as the photo in order for the photo to fit squarely (no pun intended) on the Face. So if you multiply the x-axis (width) of the 2D Face by the aspect ratio and put that number in its attributes window, you then have the correct aspect ratio. So for example if we have a sky photo that measures 756 x 486, dividing 756 by 486 we get an aspect ratio of 1.56 (rounding to the nearest figure) and 1.56 multiplied by 20.48 (default 2D Face) gives 31.95 for our 2D Faces x-axis. Our photo will now fit without tiling. We can now rescale the 2D Face uniformly using the rescale feature in the editing menu.

Attached Link: http://users.pandora.be/roobol

The complete set of tutorials on the use of photos in Bryce can be found in the link above.

http://www.roobol.be

Hi All, Thanks for the great tips and leads to the tuts! I'm re-working my Cloisters image using them and will post it in a few days. I really appreciate your comments and thoughts! Happy Holidays! Best, Clyde236