three.js plane buffergeometry uvs

Question

I'm trying to create a buffergeometry plane, I'm having troubles with the uv coordinates though. I've tried to follow Correct UV mapping Three.js yet I don't get a correct result.

The uv code is below. I also saved the entire buffergeometry code at http://jsfiddle.net/94xaL/ .

I would very much appreciate a hint on what I'm doing wrong here!

Thanks!

    var uvs = terrainGeom.attributes.uv.array;
    var gridX = gridY = TERRAIN_RES - 1;
    for ( iy = 0; iy < gridY; iy++ ) {
        for ( ix = 0; ix < gridX; ix++ ) {

            var i = (iy * gridY + ix) * 12;

            //0,0
            uvs[ i ] = ix / gridX
            uvs[ i + 1 ] = iy / gridY;

            //0,1
            uvs[ i + 2 ] = ix / gridX
            uvs[ i + 3 ] = ( iy + 1 ) / gridY;

            //1,0
            uvs[ i + 4 ] = ( ix + 1 ) / gridX
            uvs[ i + 5 ] = iy / gridY;

            //0,1
            uvs[ i + 6 ] = ix / gridX
            uvs[ i + 7 ] = ( iy + 1 ) / gridY;

            //1,1
            uvs[ i + 8 ] = ( ix + 1 ) / gridX
            uvs[ i + 9 ] = ( iy + 1 ) / gridY;

            //1,0
            uvs[ i + 10 ] = ( ix + 1 ) / gridX
            uvs[ i + 11 ] = iy / gridY;
        }
    }

Answer 1

The latest three.js version in the dev branch now builds planes with BufferGeometry: https://github.com/mrdoob/three.js/blob/dev/src/extras/geometries/PlaneGeometry.js

If you still want to build your own you can get some inspiration there.