public JsonResult Post(string jData)
{
UserData userData = new UserData();
userData = JsonConvert.DeserializeObject <UserData>(jData);
var keyCache = "" + userData.A + "" + "" + userData.B + "" + "" + userData.C + "" + "" + userData.Step + "" + "" + userData.RangeFrom + "" + "" + userData.RangeTo + "";
var resultCache = appCache.GetValue(keyCache.ToString());
if (resultCache == null)
{
if (userData != null)
{
float y;
int discriminant = (int)(Math.Sqrt(Math.Pow(userData.B, 2) - 4 * userData.A * userData.C));
if (discriminant >= 0)
{
for (float x = userData.RangeFrom; x <= userData.RangeTo; x += userData.Step)
{
y = (float)((userData.A * Math.Pow(x, 2)) + userData.B * x + userData.C);
userData.Points.Add(new Point()
{
PointX = x,
PointY = y
});
}
}
else
{
return(Json(jData));
}
var result = userData.Points.Select(i => new { i.PointX, i.PointY }).ToList();
db.UserDatas.Add(userData);
db.SaveChanges();
appCache.Add(userData);
return(Json(result));
}
else
{
return(Json(jData));
}
}
else
{
var result = resultCache.Points.Select(i => new { i.PointX, i.PointY }).ToList();
return(Json(result));
}
}