C-Sharp Atan2 Example – Code Sample Syntax
C-Sharp Atan2 Example – Code Sample Syntax
Purpose: – Illustrates using C-Sharp Atan2 Code Example.
Purpose:
takes 2 double data type numbers and returns a double value
containing the angle (measured in radians) whose tangent is the
quotient of two specified numbers (you can convert
the radians to degrees by multiplying them by Math.PI/180)
Syntax:
Atan2(y as double, x as double)
Atan2(y as double, x as double)
| Parameters | Description | y | double – y is the y coordinate of a point |
|---|---|
| x | double – x is the x coordinate of a point |
| Result Data Type | Description | double | the angle measured in radians. (you can convert the radians to degrees by multiplying them by Math.PI/180) |
|---|
| Quick Example | Atan2(1, 1) // Returns .785398163397448 |
|---|
Step 1: Click cs to Cut-n-paste code into clsAtan2.cs
using System;
public class clsAtan2
{
public void Main()
{
//********************************************************************************
// Purpose: takes 2 double data type numbers and returns a double value
// containing the angle (measured in radians) whose tangent is the
// quotient of two specified numbers (you can convert
// the radians to degrees by multiplying them by Math.PI/180)
//
// Syntax: Atan2(y as double, x as double)
//
// Parameter1: y - double - y is the y coordinate of a point
//
// Parameter2: x - double - x is the x coordinate of a point
//
// Result: double - the angle measured in radians. (you can
// convert the radians to degrees by multiplying
// them by Math.PI/180)
//
// Quick Example: Atan2(1, 1) // Returns .785398163397448
//
//********************************************************************************
// This example is from http://idealprogrammer.com
Console.WriteLine("Example #1: Atan2(0, 0)");
Console.WriteLine(Math.Atan2(0, 0)); // Returns 0
//write blank line to make output easier to read
Console.WriteLine();
Console.WriteLine("Example #2: Atan2(1, 1)");
Console.WriteLine(Math.Atan2(1, 1)); // Returns .785398163397448
//write blank line to make output easier to read
Console.WriteLine();
Console.WriteLine("Example #3: Atan2(1, 2)");
Console.WriteLine(Math.Atan2(1, 2)); // Returns .463647609000806
//Prevent console from closing before you press enter
Console.ReadLine();
}
} |
Step 2: Click cs to Cut-n-paste code into Module1.cs
Module Module1
Sub Main()
Dim myclsAtan2 As New clsAtan2
myclsAtan2.Main()
End Sub
End Module |
Prerequistes:
- Install C-Sharp (Express or Standard Edition)
- Install SQL Server Express
- Download Northwind and pubs Database
- Attach Northwind Database to Databases in Sql Express
- Attach pubs Database to Databases in Sql Express
Notes:
- Console Application is used to simplify things, but Windows Forms or Web Forms could also be used
- You can build a library of syntax examples by using same project over and over and just commenting out what you do not want to execute in Module1.cs
Instructions:
- Use C-Sharp 2010 Express or Standard Edition
- Create new project;
- Click File/New Project
- Select Console Application Template
- Select C-Sharp for Language
- name of project could be C-Sharp_Syntax.
- Add New folder named “Functions”
- Right-click project name in solution explorer;
- add new folder;
- name of folder could be: Functions
- Add New subfolder named “MathFunctions”
- Right-click Functions folder in solution explorer;
- add new folder;
- name of folder could be: MathFunctions
- Add Class Named clsAtan2 to MathFunctions folder
- Right-click MathFunctions folder;
- add new item;
- Select class
- Class name could be clsAtan2
- Click on cs in code in step 1 above to copy code into clsAtan2.cs
- Click on cs in code in step 2 above to copy code into Module1.cs
- Click green arrow or press F5 to run program
