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Shawn:
The detail texture is the same across rocks and
grass. The main texture is generated by blending 2 or more textures at
each texel based on certain criteria. The most common criteria I use is to
blend each texel based on the texel normal in relation to a normal perpendicular
to the x,z plane. Thus, the slope of the terrain at that
texel.
The detail texture is indeed a very real problem
for transitions from one type of terrain to another, where the detail texture
makes no sense. An example of this might be a transition from rock to
snow, or from sand to water. I am pretty sure the only way to solve this
is to overlap the polygons and for the "top" texture set the texture alphas at
the texel level to maintain a smooth non-linear transition. Thankfully
this should only be needed in a smaller number of cases.
The model for the man was converted by the tool
called "3d Exploration" into 3ds format from a halflife model, then loaded into
java3d using John White's 3ds loader. We have not even begun work on
animations yet because it is more important to get the world to a point where
our non- technical types can work on balance, gameplay and world building.
As funny as it sounds, animation is eye candy, albiet some of the most
important.
The overlay is in a JWindow, but all the
graphics for chat history, etc is painted using a graphics context, so when I am
ready to try video textures again I will build the textures using the same
code. In my mind the chat box needs to be translucent because it
takes up so much real estate.
Dave Yazel
Cosm Development Team
----- Original Message -----
Sent: Wednesday, November 22, 2000 4:54
PM
Subject: Re: [JAVA3D] Multi-texture
question
Hi David,
Great looking snapshot! I have two
questions for ya.
1) Is the detail texture on the rocks and the
ground the same? It looks like it but not quite sure - didn't see any seams
though so it must be....
2) Is the "main" texture is a procedure
generate full color image that is mapped perfectly to the terrain?
If
these are true, right now you can't get any detail pattern changes across
different types of surfaces (i.e. rock or grass). Is that correct?
It think this is the trade we have to make to get continuous looking textured
surfaces...
Also, the character is looks great, what format?
Also,
your overlays... are they running good, if so, which J3D
version?
Looking good!! (I think you need some particles :-)
)
David wrote:
001a01c054c0$7058dda0$de67a7cc@net" type="cite">
I got multi-texture working. Looks like
using the methods to set a single vertex are not working with multiple
sets. I just changed it to build the array of floats then set them all
at once. That worked perfectly. I have it working in OpenGL on a
NVidia TNT ultra card using j3d 1.2.1 beta
Here is a picture of it in action. The
terrain textures are procedural generated blending based on slope of each
texel. Note how the grass gives way to rock.
Dave Yazel
Cosm Development team
-----
Original Message -----
Sent:
Wednesday, November 22, 2000 2:33 PM
Subject:
Re: [JAVA3D] Multi-texture question
I have worked with multi-texture quite a bit now and I have
run into many, many problems. However, all but one were in our
code. It's just gets confusing very quick!
I'd like to
see the entire exception dump. Check like crazy (as if you didn't!)
and if it won't come clean. If not, "whip" up some test
code. The Java3D team has been outstanding lately in running and
checking test apps.
David wrote:
035701c0542b$f775e700$b26ca7cc@net" type="cite">I am getting a null pointer exception when I try to set a texture coordinate
for unit state 0. When I created the triangle strip array I asked for two
texture sets like this:
public TriangleStripArray getGeometryDefinition( int vertexPoints, int
perStrip[] ) {
Log.log.println(LogType.EXHAUSTIVE,"Creating multitexture geometry");
int texMapping[] = {0,1,1};
return new TriangleStripArray(vertexPoints,
GeometryArray.COORDINATES |
GeometryArray.NORMALS |
GeometryArray.TEXTURE_COORDINATE_2 |
GeometryArray.COLOR_3,
2,
texMapping,
perStrip);
}
Later I try to set the texture coordinates for a single vertex like this:
triangles.setTextureCoordinate(0,vertex,new TexCoord2f(texX,texZ));
triangles.setTextureCoordinate(1,vert!
ex,new
TexCoord2f(texX/densi!
ty,texZ/density));
In the only example of this I could find, they were calculating an array of
floats and just setting the entire unit state texture coords like this:
// specify texture coordinates for texture coordinate set 0
geo.setTextureCoordinates(0, 0, texCoordSet0);
// specify texture coordinates for texture coordinate set 1
geo.setTextureCoordinates(1, 0, texCoordSet1);
Am I missing something? I am trying to multi texture a detail texture over
another texture.
Dave Yazel
Cosm Development Team
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___________________________________________________________
Shawn Kendall Full Sail Real World Education
Course Director 3300 University BLVD
Real Time 3D for Gaming Winter Park FL 32792
[EMAIL PROTECTED] http://www.fullsail.com
___________________________________________________________
===========================================================================
To unsubscribe, send email to [EMAIL PROTECTED] and include
in the body of the message "signoff JAVA3D-INTEREST". For general help,
send email to [EMAIL PROTECTED] and include
in the body of the message "help".
--
___________________________________________________________
Shawn Kendall Full Sail Real World Education
Course Director 3300 University BLVD
Real Time 3D for Gaming Winter Park FL 32792
[EMAIL PROTECTED] http://www.fullsail.com
___________________________________________________________
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