 | | | About mesh generation and manipulation. | About mesh generation and manipulation. 2004-03-01 - By Adam Nemitoff
Back
You could have your mesh have a fixed face count and "hide" the faces
that are not used (perhaps by flipping their normals so they are
backface culled) but there will still overhead assocated with those
hidden faces.
Based on my own ROAM implementation in C++ using DirectX and my
experience programming SW3D in lingo, I don't think that you will be
able to acheive the necessary performance in shockwave.
-Adam Nemitoff
-- --Original Message-- --
From: dir3d-l-bounces@(protected)
[mailto:dir3d-l-bounces@(protected)] On Behalf Of Candide -
Keynoise
Sent: Monday, March 01, 2004 12:49 PM
To: dir3D dir3D dir3D
Subject: [Dir3d-l] About mesh generation and manipulation.
Hi all.
I'm currently working on a ROAM (Terrain optimisation) algo in
Dirrector, but Lingo seems to be realy slow with that kind of things.
Computing the ROAM BinTree is not realy a problem but when calling the
GenerateNormals et the Build command to create or refresh the mesh, I
get a 200ms freeze in my script (per frame) (with about 1000 poly) ...
arg !
The other problem is the CreateMesh function require the faces number
when called. And this number can't change. Unfortunatly, the ROAM algo
don't give a constant number of faces.
I tried many things but the only way I found is to Delete et Re-create
the mesh at each frame ... hugly ! ... and so slow.
Does anybody of you know an other way to create, handle and refresh a
mesh faster with director : may be by programming a Xtra.
I read in a previous post some comments about Virtools. Is this
software's script more efficient with the mesh handling. I studied a bit
Virtools and saw there is two way for programming it : the VSL script or
the SDK by C++ DLLs. But I'm not sure the user made DLLs can be linked
and export to a Web based movie.
Thank you for your help
Regards.
Candide
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=US-ASCII">
<TITLE>Message</TITLE>
<META content="MSHTML 6.00.2800.1400" name=GENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=#ffffff>
<DIV><SPAN class=809561018-01032004><FONT face=Arial color=#0000ff size=2>You
could have your mesh have a fixed face count and "hide" the faces that
are
not used (perhaps by flipping their normals so they are backface culled) but
there will still overhead assocated with those hidden faces.</FONT></SPAN></DIV>
<DIV><SPAN class=809561018-01032004><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=809561018-01032004><FONT face=Arial color=#0000ff size=2>Based
on my own ROAM implementation in C++ using DirectX and my experience
programming
SW3D in lingo, I don't think that you will be able to acheive the necessary
performance in shockwave.</FONT></SPAN></DIV>
<DIV><SPAN class=809561018-01032004><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=809561018-01032004><FONT face=Arial color=#0000ff size=2>-Adam
Nemitoff</FONT></SPAN></DIV>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV></DIV>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left><FONT
face=Tahoma size=2>-- --Original Message-- --<BR><B>From:</B>
dir3d-l-bounces@(protected)
[mailto:dir3d-l-bounces@(protected)] <B>On Behalf Of </B>Candide -
Keynoise<BR><B>Sent:</B> Monday, March 01, 2004 12:49 PM<BR><B>To:</B> dir3D
dir3D dir3D<BR><B>Subject:</B> [Dir3d-l] About mesh generation and
manipulation.<BR><BR></FONT></DIV>
<DIV><FONT face=Arial size=2>Hi all.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I'm currently working on a ROAM (Terrain
optimisation) algo in Dirrector, b</FONT><FONT face=Arial size=2>ut Lingo
seems to be realy slow with that kind of things.</FONT></DIV>
<DIV><FONT face=Arial size=2>Computing the ROAM BinTree is not realy a
problem
but when calling the GenerateNormals et the Build command to create or
refresh
the mesh, I get a 200ms freeze in my script (per frame) (with about 1000 poly
)
... arg !</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>The other problem is the CreateMesh function
require the faces number when called. And this number can't change.
Unfortunatly, the ROAM algo don't give a constant number of
faces.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I tried many things but the only way I found is
to Delete et Re-create the mesh at each frame ... hugly ! ... and so
slow.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Does anybody of you know an other way to
create, handle and refresh a mesh faster with director : may be by
programming a Xtra.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I read in a previous post some comments about
Virtools. Is this software's script more efficient with the mesh handling. I
studied a bit Virtools and saw there is two way for programming it : the VSL
script or the SDK by C++ DLLs. But I'm not sure the user made DLLs can
be
linked and export to a Web based movie.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Thank you for your help</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Regards.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Candide</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV></BLOCKQUOTE></BODY></HTML>
__ ____ ____ ____ ____ ____ ____ ____ ____ ____
Dir3d-l mailing list
Dir3d-l@(protected)
http://nuttybar.drama.uga.edu/mailman/listinfo/dir3d-l
|
|
|