[gameprogrammer] Re: triangle strips or fans

Do you think I can generate the map geometry from a list of heights and use an one dimension array to store the vertices?

Olof Bjarnason escribió: 
try using fences if you are in opengl.. that way you could have a
piece of ground like this:

-----
|\|/|
|/|\|
-----

(try viewing my ACSII art in notepad if you are on
not-constant-width-font mail program)

It is a 9 vertice geometric entity. 4 vertices are corners, 4 vertices
are on the midpoint of the edges. The last vertice is in the middle of
the figure. Each corner is connected to each middlepoint. The middle
vertice is connected to all other points.

That way, each of the 9 vertices can have an individual height from
you heightmap, and the total number of glVertice calls / indices if
you are using vertice arrays is 10 IIRC, to render not less than 8
triangles. That is 10/8 ~= 1.25 vertice calls per triangle. (3 vertice
calls per triangle with ordinary calls of course..) It's quite nice..

You have to be cautious on the order you are sending your vertices
though, read up on the fence order of opengl.

/Olof

On 2/7/06, Enrico Zschemisch <enrico.zschemisch@xxxxxx> wrote: 
Hi,

Indices? What is that? 
Do you mean indices in general?

http://en.wikipedia.org/wiki/Array

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