public void UpdateTextureTransform(TextureUnitState texUnit, float pageX, float pageZ)
        {
            //Axiom.Core.LogManager.Instance.Write("Decal: {0}, {1} page:{2}, {3}", posX, posZ, pageX, pageZ);
            float pageSize = TerrainManager.Instance.PageSize * TerrainManager.oneMeter;
            float scaleX   = sizeX / pageSize;
            float scaleZ   = sizeZ / pageSize;

            texUnit.SetTextureScale(scaleX, scaleZ);
            float centerX = pageX + pageSize / 2f;
            float centerZ = pageZ + pageSize / 2f;

            texUnit.SetTextureScroll((centerX - posX) / (pageSize * scaleX), (centerZ - posZ) / (pageSize * scaleZ));
            texUnit.SetTextureRotate(rot);
        }