Why is the texture in the example flipped upside down?

[PhilAndrew]

Hi, why is the texture in this example flipped upside down? web_gl_geometry_cube
http://threedart.github.io/three.dart/example/web_gl_geometry_cube/web_gl_geometry_cube.html

https://github.com/threeDart/three.dart/blob/master/example/web_gl_geometry_cube/web_gl_geometry_cube.dart

If you comment out the rotation in the animate function, you can see the texture is exactly flipped upside down.
//cube.rotation.x += 0.005;
//cube.rotation.y += 0.01;

Is this a bug? if not, can you please explain why it is the case and how to fix?

[PhilAndrew]

I mean, the example at ThreeJS is correct, the cube texture is correct.
http://threejs.org/examples/webgl_geometry_cube.html

[PhilAndrew]

I think its a bug:

In any case, this seems to be an old bug in CubeGeometry in three.js, which was fixed in July 2012
but has not been fixed in three.dart.

http://stackoverflow.com/questions/21968644/why-is-the-texture-image-upside-down-in-this-example-dart-threejs

[jonboj]

Hi, I experience the same. In the Texture class it seems that .flipY by default is true. In three.js this is false. In my case it took some time and bug hunting, before I realized this. The workaround is a simple one liner.
Texture texture = ImageUtils.loadTexture(wmsGetMapUrl, mapping: new UVMapping());
texture.flipY = false;//Disable the default vertical flip.