for (int tri = 0; tri < f.decomp.length; tri += 3) {
Point2 a = T.times(texCoords.get(f.texIndices[f.decomp[tri]]));
Point2 b = T.times(texCoords.get(f.texIndices[f.decomp[tri + 1]]));
Point2 c = T.times(texCoords.get(f.texIndices[f.decomp[tri + 2]]));
builder.reset();
builder.add(a);
builder.add(b);
builder.add(c);
Box2 bound = builder.getBoundingBox();