Hi Zach,
On 4/16/07, Zach Deedler <[EMAIL PROTECTED]> wrote:
INVESTIGATION
I1) I am investigating moving/removing/adding vertices in real-time.
I2) I am also investigating modifying texture alpha values (Kind of like
erasing the overlying snow).
QUESTIONS
Q1) Are there any osg examples that may help me in this investigation?
Examples that may dynamically move/remove/add vertices in real-time?
The osgTDS does adding of vertices on loadtime, not quite real-time
but it might give you something to review.
There arn't any other OSG examples don't do adding/removing vertices.
In general I'd say try to avoid adding and removing vertices, by
adjusting their heights/colours. If keep a static mesh with static
base attributes, and minimize the amount of data you update per frame
then you should be in a good position for hitting real-time needs.
Q2) I am looking for consultation for simulating snow plowing with OSG. If
anybody believes they have the expertise to do this please contact me.
I'm not available right now alas, it'd would be a fun project though :-)
Q3) Anybody have suggestions on how to implement snow plowing?
I'd try out using a static height field that is displaced by values
that are updated in real-time, a simple vertex shader could do the
displacement either reading the z values for float tex coord array, or
from using tex read.
It just so happens that some of the upcoming work on osgTerrain will
provide support for doing displacement maps that can be updated in
real-time. Perhaps this could be reused for your purpose.
Robert.
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