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This code contains a DLL implementing water rendering with OpenGL, and you can
directly use it in your projects to render water surface.
The DLL is actually a COM object which should be registered with Windows
regsvr32.exe (interface function file is attached).
A sample project (Visual C++ 6.0) is also provided.
The code is based upon a brilliant article
"Using vertex texture displacement for realistic water rendering".
List of files:
runtest.bat - registers STVisualSea.dll with regsvr32.exe and runs
the demo SeaTest.exe
STVisualSea.dll - DLL which implements water rendering, this is that big
because its resources contain a number of big (but compressed) bitmaps
SeaTest.exe - demo which calls STVisualSea.dll
STVisualSea.idl, STVisualSea_i.c, STVisualSea_p.c, -
interface files for STVisualSea.dll
STSeaTestProject.zip - sample project to compile SeaTest.exe demo
Interface functions:
Init() - allocates memory, loads resources etc. Should be called first
after OpenGL is started, CoInitialize() called and a COM object by
CreateInstance is created.
Start(float frustumangle, float waveheight, long wpointsptr,
long numwpoints) -
sets rendering parameters : frustum angle in degrees (default 45.0);
wave height in metres; wpointsptr - pointer to an array of X-Y float pairs
which represent your ship waterline shape (Y points forward, points
go counterclockwise); numpoints - number of such points. The waterline shape
can specified to avoid waves penetrating ship hull. Set wpointsptr to NULL and
numpoints to 0 if not needed.
Render(float coursedeg, float speedx, float speedy, float windx,
float windy) - call this function for every frame. coursedeg - ship course in degrees,
speedx, speedy - ship speed vector components in m/s; windx, windy - wind vector
component along X and Y in m/s. Y axis is directed upwards to the North, X - to the
starboard.
Stop() - stop rendering
Quit() - deallocate memory etc.
For the sample code look at full source in STSeaTestProject.zip, file SeaTest.cpp
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