MetaBalls

traumatic · Post by **traumatic** » Tue Jan 20, 2004 12:00 am

http://files.connection-refused.org/metaballs.zip

It's far from perfect and still needs LOTS of optimizing (can't get above 50FPS on my system) but I thought
I'll post it here because I don't know if I'll ever find the time to finish...

...and I know of people saying that PB can't do this

The demonstration is based on this article:
http://astronomy.swin.edu.au/~pbourke/m ... olygonise/
Maybe some of you can find a faster way than I did.

Now I will stop posting something new everyday. Promised!

Saboteur · Post by **Saboteur** » Tue Jan 20, 2004 12:10 am

Waw!! 8O
PB can't do this

50 FPS too....

Blade · Post by **Blade** » Tue Jan 20, 2004 12:11 am

Great!
Nice to see such stuff with PB!

Anyway you should check the normals calculations: the reflection is broken clearly in each quad, while if properly made should me more smooth...

sorry, too late to write a correct english...

NoahPhense · Post by **NoahPhense** » Tue Jan 20, 2004 1:04 am

omg.. that kicks as$..

Post by **Dare2** » Tue Jan 20, 2004 1:39 am

That's good.

Don't know if this info is useful, but the metaballs render pretty much as per your posted images except for 800x600x32 resolution, when rectangles (mostly red) can be seen - display starts to get the "dirty" look I am used to with this sort of stuff, but does not get as dirty as most.

FPS is around 20 in 640x480 modes, around 15 in 800x600 and 1024x768 modes.

(NVIDIA RIVA TNT2 Model64)

J. Baker · Post by **J. Baker** » Tue Jan 20, 2004 7:31 am

Very nice, is this reflecting an image or lights?

traumatic · Post by **traumatic** » Tue Jan 20, 2004 9:10 am

J. Baker wrote:Very nice, is this reflecting an image or lights?

that's environment mapping, so basically an image

hteamspy · Post by **hteamspy** » Tue Jan 20, 2004 9:18 am

I get bettwen 60 and 70 FPS on 800x600 : 32bit

and constant 60 Fps on 1024x768 : 32 Bit

Nice work

blueznl · Post by **blueznl** » Tue Jan 20, 2004 2:44 pm

again, on my machine, fps 60..65 :-/

hey, doesn't matter is a scene is easy or difficult, all i get is the same rate... huh... duh...

opengl or directx?

800x600x32: no (reddish) rectangles as noted above, but it's not always smooth on the blending areas

blueznl · Post by **blueznl** » Tue Jan 20, 2004 2:47 pm

just noticed something... are you sure you calculate the framerate properly? if i move the mouse a lot, the reported fps varies from 25 .. 270, although it makes no difference on screen

traumatic · Post by **traumatic** » Tue Jan 20, 2004 3:29 pm

blueznl wrote:are you sure you calculate the framerate properly?

yes quite, because it always reflects my refreshrate.
i'll check that tonight, thank you

blueznl · Post by **blueznl** » Tue Jan 20, 2004 3:33 pm

well, it appears to be totally unrelated to my refresh rate (100hz) which makes it kinda' funny...

GPI · Post by **GPI** » Tue Jan 20, 2004 8:02 pm

Could it be, that you use SetRefreshRate(RefreshRate) ?

Because my monitor flickers now in 60hz (and normaly i set VGA-Driver so, that direct-x use 100hz) and the desktop-resolution is changed! Other PB-Programms doesn't have this problem.

When yes: Can you create a little test-version without this command?

Num3 · Post by **Num3** » Tue Jan 20, 2004 9:27 pm

I found this nice Library on purearea that comes with some extra commands for Sprites...

Including SwapBuffers()...

This little baby turned my 60 FPS game (using flipbuffer()) into a 350!!! FPS game...

I was quite impressed! And give it 6 thumbs up !!!!

It's called SpriteX...

tinman · Post by **tinman** » Tue Jan 20, 2004 9:35 pm

It crashed on my machine. As did the one previous program I tried (I forget which one now, but I have it here somewhere).

WinXP, Athlon XP2800+, 512MB ram, nForce2 chipset/audio, Ati radeon 9600. All the latest drivers and OS patches.

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MetaBalls

MetaBalls

Re: MetaBalls

Very nice

Re: MetaBalls