/// <summary>
/// Equals - compares this Point3D with the passed in object. In this equality
/// Double.NaN is equal to itself, unlike in numeric equality.
/// Note that double values can acquire error when operated upon, such that
/// an exact comparison between two values which
/// are logically equal may fail.
/// </summary>
/// <returns>
/// bool - true if the object is an instance of Point3D and if it's equal to "this".
/// </returns>
/// <param name='o'>The object to compare to "this"</param>
public override bool Equals(object o)
{
if ((null == o) || !(o is Point3D))
{
return(false);
}
Point3D value = (Point3D)o;
return(Point3D.Equals(this, value));
}
// This method performs the Point3D operations
private void PerformOperation(object sender, RoutedEventArgs e)
{
RadioButton li = (sender as RadioButton);
// Strings used to display the results
String syntaxString, resultType, operationString;
// The local variables point1, point2, vector2, etc are defined in each
// case block for readability reasons. Each variable is contained within
// the scope of each case statement.
switch (li.Name)
{ //begin switch
case "rb1":
{
// Translates a Point3D by a Vector3D using the overloaded + operator.
// Returns a Point3D.
Point3D point1 = new Point3D(10, 5, 1);
Vector3D vector1 = new Vector3D(20, 30, 40);
Point3D pointResult = new Point3D();
pointResult = point1 + vector1;
// point3DResult is equal to (30, 35, 41)
// Displaying Results
syntaxString = "pointResult = point1 + vector1;";
resultType = "Point3D";
operationString = "Adding a 3D Point and a 3D Vector";
ShowResults(pointResult.ToString(), syntaxString, resultType, operationString);
break;
}
case "rb2":
{
// Translates a Point3D by a Vector3D using the static Add method.
// Returns a Point3D.
Point3D point1 = new Point3D(10, 5, 1);
Vector3D vector1 = new Vector3D(20, 30, 40);
Point3D pointResult = new Point3D();
pointResult = Point3D.Add(point1, vector1);
// pointResult is equal to (30, 35, 41)
// Displaying Results
syntaxString = "pointResult = Point3D.Add(point1, vector1);";
resultType = "Point3D";
operationString = "Adding a 3D Point and a 3D Vector";
ShowResults(pointResult.ToString(), syntaxString, resultType, operationString);
break;
}
case "rb3":
{
// Subtracts a Vector3D from a Point3D using the overloaded - operator.
// Returns a Point3D.
Point3D point1 = new Point3D(10, 5, 1);
Vector3D vector1 = new Vector3D(20, 30, 40);
Point3D pointResult = new Point3D();
pointResult = point1 - vector1;
// pointResult is equal to (-10, -25, -39)
// Displaying Results
syntaxString = "pointResult = point1 - vector1;";
resultType = "Point3D";
operationString = "Subtracting a Vector3D from a Point3D";
ShowResults(pointResult.ToString(), syntaxString, resultType, operationString);
break;
}
case "rb4":
{
// Subtracts a Vector3D from a Point3D using the static Subtract method.
// Returns a Point3D.
Point3D point1 = new Point3D(10, 5, 1);
Vector3D vector1 = new Vector3D(20, 30, 40);
Point3D pointResult = new Point3D();
pointResult = Point3D.Subtract(point1, vector1);
// pointResult is equal to (-10, -25, -39)
// Displaying Results
syntaxString = "pointResult = Point3D.Subtract(point1, vector1);";
resultType = "Point3D";
operationString = "Subtracting a Vector3D from a Point3D";
ShowResults(pointResult.ToString(), syntaxString, resultType, operationString);
break;
}
case "rb5":
{
// Subtracts a Point3D from a Point3D using the overloaded - operator.
// Returns a Vector3D.
Point3D point1 = new Point3D(10, 5, 1);
Point3D point2 = new Point3D(15, 40, 60);
Vector3D vectorResult = new Vector3D();
vectorResult = point1 - point2;
// vectorResult is equal to (-5, -35, -59)
// Displaying Results
syntaxString = " vectorResult = point1 - point2;";
resultType = "Vector3D";
operationString = "Subtracting a Point3D from a Point3D";
ShowResults(vectorResult.ToString(), syntaxString, resultType, operationString);
break;
}
case "rb6":
{
// Subtracts a Point3D from a Point3D using the static Subtract method.
// Returns a Vector3D.
Point3D point1 = new Point3D(10, 5, 1);
Point3D point2 = new Point3D(15, 40, 60);
Vector3D vectorResult = new Vector3D();
vectorResult = Point3D.Subtract(point1, point2);
// vectorResult is equal to (-5, -35, -59)
// Displaying Results
syntaxString = "vectorResult = Point3D.Subtract(point1, point2);";
resultType = "Vector3D";
operationString = "Subtracting a Point3D from a Point3D";
ShowResults(vectorResult.ToString(), syntaxString, resultType, operationString);
break;
}
case "rb7":
{
// Offsets the X, Y and Z values of a Point3D.
Point3D point1 = new Point3D(10, 5, 1);
point1.Offset(20, 30, 40);
// point1 is equal to (30, 35, 41)
// Note: This operation is equivalent to adding a point
// to vector with the corresponding X,Y, Z values.
// Displaying Results
syntaxString = "point1.Offset(20, 30, 40);";
resultType = "Point3D";
operationString = "Offsetting a Point3D";
ShowResults(point1.ToString(), syntaxString, resultType, operationString);
break;
}
case "rb8":
{
// Multiplies a Point3D by a Matrix.
// Returns a Point3D.
Point3D point1 = new Point3D(10, 5, 1);
Point3D pointResult = new Point3D();
Matrix3D matrix1 = new Matrix3D(10, 10, 10, 0, 20, 20, 20, 0, 30, 30, 30, 0, 5, 10, 15, 1);
pointResult = point1 * matrix1;
// pointResult is equal to (235, 240, 245)
// Displaying Results
resultType = "Point3D";
syntaxString = "pointResult = point1 * matrix1;";
operationString = "Multiplying a Point3D by a Matrix3D";
ShowResults(pointResult.ToString(), syntaxString, resultType, operationString);
break;
}
case "rb9":
{
// Multiplies a Point3D by a Matrix.
// Returns a Point3D.
Point3D point1 = new Point3D(10, 5, 1);
Point3D pointResult = new Point3D();
Matrix3D matrix1 = new Matrix3D(10, 10, 10, 0, 20, 20, 20, 0, 30, 30, 30, 0, 5, 10, 15, 1);
pointResult = Point3D.Multiply(point1, matrix1);
// pointResult is equal to (235, 240, 245)
// Displaying Results
resultType = "Point3D";
syntaxString = "pointResult = Point3D.Multiply(point1, matrix1);";
operationString = "Multiplying a Point3D by a Matrix";
ShowResults(pointResult.ToString(), syntaxString, resultType, operationString);
break;
}
case "rb10":
{
// Checks if two Point3Ds are equal using the overloaded equality operator.
Point3D point1 = new Point3D(10, 5, 1);
Point3D point2 = new Point3D(15, 40, 60);
Boolean areEqual;
areEqual = (point1 == point2);
// areEqual is False
// Displaying Results
syntaxString = "areEqual = (point1 == point2);";
resultType = "Boolean";
operationString = "Checking if two 3D points are equal";
ShowResults(areEqual.ToString(), syntaxString, resultType, operationString);
break;
}
case "rb11":
{
// Checks if two Point3D structures are equal using the static Equals method.
Point3D point1 = new Point3D(10, 5, 1);
Point3D point2 = new Point3D(15, 40, 60);
Boolean areEqual;
areEqual = Point3D.Equals(point1, point2);
// areEqual is False
//Displaying Results
syntaxString = "areEqual = Point3D.Equals(point1, point2);";
resultType = "Boolean";
operationString = "Checking if 3D two points are equal";
ShowResults(areEqual.ToString(), syntaxString, resultType, operationString);
break;
}
case "rb12":
{
// Compares an Object and a Point3D for equality using the non-static Equals method.
Point3D point1 = new Point3D(10, 5, 1);
Point3D point2 = new Point3D(15, 40, 60);
Boolean areEqual;
areEqual = point1.Equals(point2);
// areEqual is False. point2 is a Point3D structure, but it is not equal to point1.
// Displaying Results
syntaxString = "areEqual = point1.Equals(point2);;";
resultType = "Boolean";
operationString = "Checking if two 3D points are equal";
ShowResults(areEqual.ToString(), syntaxString, resultType, operationString);
break;
}
case "rb13":
{
// Converts a string representation of a 3-D point into a Point3D structure.
Point3D pointResult = new Point3D();
pointResult = Point3D.Parse("1,3,5");
// pointResult is equal to (1,3,5)
// Displaying Results
syntaxString = "ointResult = Point3D.Parse(\"1,3,5\");";
resultType = "Matrix";
operationString = "Converting a string into a Point3D structure.";
ShowResults(pointResult.ToString(), syntaxString, resultType, operationString);
break;
}
case "rb14":
{
// Checks if two Point3Ds are not equal using the overloaded inequality operator.
Point3D point1 = new Point3D(10, 5, 1);
Point3D point2 = new Point3D(15, 40, 60);
Boolean areNotEqual;
areNotEqual = (point1 != point2);
// areNotEqual is True
// Displaying Results
syntaxString = "areNotEqual = (point1 != point2);";
resultType = "Boolean";
operationString = "Checking if two 3D points are not equal";
ShowResults(areNotEqual.ToString(), syntaxString, resultType, operationString);
break;
}
case "rb15":
{
// Point3D Subtraction
// instantiate variables
Point3D point1 = new Point3D();
Point3D point2 = new Point3D(15, 40, 60);
Vector3D vector1 = new Vector3D(20, 30, 40);
Point3D pointResult = new Point3D();
Vector3D vectorResult = new Vector3D();
// defining x,y,z of point1
point1.X = 10;
point1.Y = 5;
point1.Z = 1;
vectorResult = Point3D.Subtract(point1, point2);
// vectorResult is equal to (-5, -35, -39)
vectorResult = point2 - point1;
// vectorResult is equal to (5, 35, 59)
//pointResult = Point3D.Subtract(point1, vector1);
// pointResult is equal to (-10, -25, -39)
pointResult = vector1 - point1;
// pointResult is equal to (10, 25, 39)
// Displaying Results
syntaxString = "areNotEqual = (point1 != point2);";
resultType = "Boolean";
operationString = "Checking if two 3D points are not equal";
ShowResults(pointResult.ToString(), syntaxString, resultType, operationString);
break;
}
default:
break;
} //end switch
}
/// <summary>
/// Equals - compares this Point3D with the passed in object. In this equality
/// Double.NaN is equal to itself, unlike in numeric equality.
/// Note that double values can acquire error when operated upon, such that
/// an exact comparison between two values which
/// are logically equal may fail.
/// </summary>
/// <returns>
/// bool - true if "value" is equal to "this".
/// </returns>
/// <param name='value'>The Point3D to compare to "this"</param>
public bool Equals(Point3D value)
{
return(Point3D.Equals(this, value));
}
