Hi Kim,
I attached the two files to this posting. The usage is simple, just
use osgDB::readImageFile("FILEPATH") to get the a mask image that will then be
applied to modulate the heights in the computeSea function. The mask is white
where no change is needed and black where the ocean should not be visible.
Currently it has some drawbacks:
-The average height and the height of the lesser LOD's treats the masking
height (e.g. -100.0f) like the valid heights
-It is not easy to produce a specific height distribution aside from a plain
surface thats bounded by a definable shore. A river that flows down some rapids
or multiple waterfalls are hard to get correctly. It would be better if the
mask is supplied with specific (relative) ground heights so that e.g. 0 means
no change and a mask value of e.g. 10 means the surface should on average be 10
units elevated
-LOD 0 (1 Quad) currently cannot benefit from the masking, maybe by using a
shader/texture that has alpha values set like the mask, this effect can still
be conveyed at LOD0
Cheers,
Oliver
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=47991#47991
Attachments:
http://forum.openscenegraph.org//files/fftoceansurface_864.cpp
http://forum.openscenegraph.org//files/1719_1338534512._126.
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