public Vector3 GetFlowDirection(Vector2 posUV)
{
if (Object.op_Equality((Object)TerrainMeta.WaterMap, (Object)null))
{
return(Vector3.get_zero());
}
Vector3 normalFast = TerrainMeta.WaterMap.GetNormalFast(posUV);
float num = Mathf.Clamp01(Mathf.Abs((float)normalFast.y));
normalFast.y = (__Null)0.0;
Vector3Ex.FastRenormalize(normalFast, num);
return(normalFast);
}
