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  simple texturing help  (Read 720 times)
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Offline gelero

Senior Newbie




Java games rock!


« Posted 2004-12-04 17:30:13 »

Hi guys.. new around here!
:-/

very nice forum by the way!!
Grin

My doubt is very simple...

How can I texture a single quad ?

the quad will be stored at QuadArray.... i guess...


and maybe this texture can be a image in grayscale, to simule transparency...

Any kind of help is really appreciate.

thank you
Offline gelero

Senior Newbie




Java games rock!


« Reply #1 - Posted 2004-12-04 17:31:07 »


ahhhh!! i am using java3d... of course...
Offline gelero

Senior Newbie




Java games rock!


« Reply #2 - Posted 2004-12-05 12:31:45 »

ok.. let me change my question...
:-/

How can I use the following image like a opacity map ??

http://www.meubrfree.com.br/~guivieira/star.png

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Offline Trond_A

Senior Newbie




Java games rock!


« Reply #3 - Posted 2004-12-13 22:21:53 »

Something along the lines of this:

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QuadArray l_quad = new QuadArray(8, QuadArray.COORDINATES | GeometryArray.TEXTURE_COORDINATE_2 | QuadArray.COLOR_4);

//Set vertex world position
           l_quad.setCoordinate(0, new Point3f(0.0f, 0.0f, -3.0f));
            l_quad.setCoordinate(1, new Point3f(2.0f, 0.0f, -3.0f));
            l_quad.setCoordinate(2, new Point3f(2.0f, 3.0f, -3.0f));
            l_quad.setCoordinate(3, new Point3f(0.0f, 3.0f, -3.0f));
     
//Set vertex texture coordinates
           l_quad.setTextureCoordinate(0, 0, new TexCoord2f(0, 0));
            l_quad.setTextureCoordinate(0, 1, new TexCoord2f(1, 0));
            l_quad.setTextureCoordinate(0, 2, new TexCoord2f(1, 1));
            l_quad.setTextureCoordinate(0, 3, new TexCoord2f(0, 1));

//Set vertex color
l_quad.setColor(0, new Color4f(1, 1, 1, 1));
            l_quad.setColor(1, new Color4f(1, 0, 0, 1));
            l_quad.setColor(2, new Color4f(1, 1, 1, 1));
            l_quad.setColor(3, new Color4f(1, 1, 1, 1));
           
//Set up appearance with texture
           Appearance l_quadappearance = new Appearance();
           
            Texture l_quadtex = new TextureLoader("texture.jpg", this).getTexture();
            l_quadappearance.setTexture(l_quadtex);
            TextureAttributes l_texatt = new TextureAttributes();
            l_texatt.setTextureMode(TextureAttributes.MODULATE);
            l_quadappearance.setTextureAttributes(l_texatt);

//Add quad to new (or existing) branchgroup
BranchGroup l_group = new BranchGroup();
l_group.addChild(new Shape3D(l_quad, l_quadappearance));


This code should work, if it doesn't let me know. I copy/pasted it from a prog I had here, so I might have missed something in the rush.

Hope this helps!

-Trond
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