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Subject: Up the Down Staircase...


Zhann ( ) posted Tue, 05 November 2002 at 2:22 AM · edited Wed, 11 December 2024 at 5:45 PM

file_30239.jpg

Okay, I'm working on a still life and I wanted fabric draped in the background...sooo, I used a terrian to get the folds, however, I'm encountering a problem, it's not to noticable on this because of the pattern but check the right hand side of the folds....How do I fix this.... Zhann

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Zhann ( ) posted Tue, 05 November 2002 at 2:28 AM

file_30240.jpg

Now, so everyone can see what it is I'm having problem with I just realized a solid would be better to illustrate it, what causes the jaggies on the right hand side? I've blurred, smoothed, diffused, mounded, lowered elevation, gone into psp and blurred some more, then tried everything at once, which is this one, but still got jaggies on the right....anyone know what causes this? Zhann (BTW the pattern on the top image is one of my mosiac floors.)

Bryce Forum Coordinator....

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Zhann ( ) posted Tue, 05 November 2002 at 2:31 AM

Oh, this are not preview renders, but full render on fine...:)

Bryce Forum Coordinator....

Vision is the Art of seeing things invisible...


pidjy ( ) posted Tue, 05 November 2002 at 3:02 AM

Increase your terrain resolution and add some smooth


bikermouse ( ) posted Tue, 05 November 2002 at 3:16 AM

See what you can come up with using a sin wave procedural. . . . There's a couple of freeware texture making programs I'll see if I can find their urls (give me a few minutes. )


clay ( ) posted Tue, 05 November 2002 at 3:38 AM

Yeah just jump your terrain res up a notch and maybe one or two clicks on the smoothing pebble should fix that right up.

Do atleast one thing a day that scares the hell outta ya!!


bikermouse ( ) posted Tue, 05 November 2002 at 3:38 AM

ok I only found one which you probably already
know aboutcastironflamingo.

While I was looking I found Dr Ganymede's site hopefiully
who ever wanted a moon texture will see this dr ganymede.

Also someone wanted to know something about VRML
VRML.

cheers,
-TJ


Zhann ( ) posted Tue, 05 November 2002 at 3:44 AM

The texture wasn't the problem, the terreain is...the basis for the terrian was a hi-res photo, I used gaussian blur in psp on it and imported to Bryce, I tried smoothing to no avail, how can I up the terrain res?

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Vision is the Art of seeing things invisible...


Zhann ( ) posted Tue, 05 November 2002 at 3:47 AM

Oh, and thanks for the good Dr.s link, bikermouse...:)

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Vision is the Art of seeing things invisible...


Erlik ( ) posted Tue, 05 November 2002 at 5:16 AM

Click on the grid on the bottom of the little box where the size of brush is. 1024 should be fine. If not, there are two more resolutions, 2048 and 4096. But prepare to wait for the render when you raise the resolutions. BTW, raise the resolution as soon as you open the terrain editor, not after you change the terrain into the pic.

-- erlik


Zhann ( ) posted Tue, 05 November 2002 at 5:23 AM

Thank you Erlik, I'll try it, BTW the photo I used is digital, 2272x1704, does this make a difference?

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Vision is the Art of seeing things invisible...


Erlik ( ) posted Tue, 05 November 2002 at 5:40 AM

No, I don't think so. The only thing you could try is changing the dimensions into multiples of 512 (or 256).

-- erlik


Zhann ( ) posted Tue, 05 November 2002 at 6:08 AM

file_30241.jpg

Okay, this is what I did -took the grayscale photo into psp and cranked gaussian blur to 9.91 -saved the image as a bitmap this time, not jpg -went into the TE selected 1024 res -imported the reeeally blurry photo -smoothed alot and this is what I get, the folds become disconnected, but, no jaggies...I'm working on a happy medium, somewhere where the folds are intact and smooth...:P Zhann

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Vision is the Art of seeing things invisible...


Zhann ( ) posted Tue, 05 November 2002 at 6:12 AM

Oooops, time for bed, sleepy, must go to bed... Thanks everyone, I'll continue to refine this thing in the noontime...:c)

Bryce Forum Coordinator....

Vision is the Art of seeing things invisible...


Zhann ( ) posted Tue, 05 November 2002 at 6:14 AM

BTW, it's my first terrain thingy, thanks again...

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Erlik ( ) posted Tue, 05 November 2002 at 7:27 AM

Try with smaller Gaussian blur, of about 2 px. I think that too much blurring erases (levels out) some parts of the photo.

-- erlik


tuttle ( ) posted Tue, 05 November 2002 at 9:01 AM

Imported greyscales always create jaggies. The only solution is to use the Bryce editor only, which creates artificial gradients between the 256 shades. Otherwise, 256 levels is all you're gonna get.


madmax_br5 ( ) posted Tue, 05 November 2002 at 5:08 PM

That's actually perfect. The little posterizations will give the fabric a bit of a furry look when rendered.


EricofSD ( ) posted Tue, 05 November 2002 at 11:40 PM

I was going to say that you can alter the grayscale image. I use Fauve Matisse in Gray to make terrain images like that. Its abandonware and the last site on the net that had it is gone. Too bad. PS is more powerful, but Matisse was very easy to use for this kind of stuff.


Zhann ( ) posted Wed, 06 November 2002 at 4:41 AM

Erlik, I tried every increment of GB, the original is at 3.2 in psp, so 2 is gonna be worst, I'll work with it till it's the same as the still life photo I took, madmax, I hadn't noticed the posterization til reading your post, I can live with it and it'll add a little texture... Like I said, this is the first time I've tried anything with a terrain, after seeing the amazing things you all can do with one, I thought it would be a great learning experience, once I get everything ready I'll post the WIP for some input... Thanks, Zhann

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Vision is the Art of seeing things invisible...


Erlik ( ) posted Wed, 06 November 2002 at 12:56 PM

file_30242.jpg

Your project made me try to play with terrain curtains. the untextured pic is the terrain at the resolution of 512, while the render is at 2048. I think it looks okay. What I did: found a photo of a plastic curtain on the Web (the stairies are the texture of the curtain), cropped it in PS, applied 0.3 pixel Gaussian blur and saved as a jpg. Imported it into the terrain editor, lowered the terrain, *inverted it*, and then smoothed it out. Exited the TE, increased Y first to 120% (because the folds were not pronounced enough) and then again, to 130%.

-- erlik


Zhann ( ) posted Thu, 07 November 2002 at 1:52 AM

Looks great, when I did straight folds it's been no problem, I think the drape v shape was giving me the problems, and, I noticed when I save the orig jpg as a bitmap, it seemed to work better in the TE. Now I'm working on an uneven drape, one side higher than the other...does the TE see black as invisible? Anyone?

Bryce Forum Coordinator....

Vision is the Art of seeing things invisible...


Zhann ( ) posted Thu, 07 November 2002 at 1:53 AM

AND, can you boolean a terrain, i.e. put a hole in the middle of it with a solid shape?

Bryce Forum Coordinator....

Vision is the Art of seeing things invisible...


Erlik ( ) posted Thu, 07 November 2002 at 7:28 AM

Yes, it does kinda see black as invisible. If you clip it. Open the clipping bracket and click-drag on the bottom of the clipping bracket. That's the hard part, which I think all of us passed through, dragging the middle of the bracket which does nothing. :-) The clipping bracket is to the left of the black triangle where you define the preview size. For booleaning, on the same menu where you determine the preview size, there's an entry which says "solid". check it. And when you exit the TE, follow the usual steps for booleaning - positive, negative, grouping ... Watch out for the thickness of the terrain (Y dimension). It wouldn't do if it was too thick.

-- erlik


Erlik ( ) posted Thu, 07 November 2002 at 7:32 AM

Uh, fingers faster than brain. You can always use Transparency option in the Materials to create a hole in the terrain. I'm not at my Bryce at the moment, so I cannot demonstrate, but it's the same as the thing I did in my "W at the end of P" image. And I suppose that you can always load the transparency picture in the middle box in Picture dialog in TE. Also, would have to check.

-- erlik


pauljs75 ( ) posted Thu, 07 November 2002 at 7:32 PM

Heh... Leave it to me to guess at something, but I think it wasn't necessarily the heightmap image in your earlier attempts that caused the problem - it was the type of compression you used. I'm willing to bet that if you were to zoom in, that your blocky flaws in your earlier posts are 8x8 pixels in size. Why is this? Because you were using a .jpg for your heightmap. These blocks are a characteristic of .jpg compression. JPEG format is great 98% of the time for color images, but in a greyscale used for this application - it's flaws are much more noticable. For use in heightmaps, greyscales saved in .gif (if you need compression) or .bmp (no compression) format are a lot better. Try another project the same way, but with this advice in mind and let me know what the results are. ;) L8R!


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