public Cell( NodeReader node, int textureWidth, int textureHeight )
{
name = node.AtText( "name" );
int[] pos = node.AtIntegers( "pos", ' ' );
size = node.AtIntegers( "size", ' ' );
pivot = node.AtFloats( "pivot", ' ' );
rotated = node.AtBoolean( "rotated" );
float s = pos[0] / (float) textureWidth;
float t = 1f - (pos[1] / (float) textureHeight);
float u = s + (size[0] / (float) textureWidth);
float v = t - (size[1] / (float) textureHeight);
uv = new float[4] { s, v, u, t };
}