Agua Application 12/99

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This is the Companion application to the December 1999

Game Developer magazine.

It implements an image processing method for creating

a rippling water surface.

This app does not require 3D hardware.

If it runs too slow, make the size of the height field

smaller by changing the WATER_SIZE define in AguaDlg.cpp

Try 128. Especially if you consider turning this into

a 3D height field, you will want a smaller field.

The app is a Dialog based MFC app.

Suggestions for playing around

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Experiment with changes to the Process water routine

in AguaDlg.cpp. This is the actual convolution that

creates the effect. There are a lot of variations that

produce different effects.

Optimize... I didn't spend much time making it fast.

Indexing tricks (especially in a 256x256 field) would

help as well as some assembly here and there.

Take the height field and convert it to a 3D mesh. I

would use the 256x256 as a texture but make the resolution

of the 3D mesh something like 64x64.

Credits

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Since I could not effectively figure out a original

source for this technique, I have received some mail

from people claiming to be the first. I will compile

a list of these on my website www.darwin3d.com/gamedev.htm.

Should be fun to try different people's variations.

Jeff

jeffl@darwin3d.com