CApphot:new


The new method creates an instance of the CApphot class. Note that this object can also be created using the new_apphot function.

Note: This method's name uses all lower case to present it as the analog of the C++ new operator. Generally, the names of class methods begin with an uppercase letter but new and delete are different.

Syntax

A = CApphot:new()

bullet.gif    Default constructor. The new CApphot A has all properties set to default values.

A = CApphot:new( CApphot2 )

bullet.gif    This is a copy constructor. The new CApphot A is initialized to the properties of CApphot2. In place of CApphot and CApphot2, use the actual names of the objects, such as A and A2.

Example

The following example shows the default constructor and destructor pair:

A = CApphot:new()

-- create a new instance of A of the CApphot class.

  ...

-- other uses of the class go here, between new and delete.

A:delete()

-- deletes the object and its associated memory.

 

The next example shows the use of both constructors:

A = CApphot:new(A1)

-- copy constructor, duplicates the data in A1

B = CApphot:new()

-- default constructor

B.nRadius1 = 4.5

-- Set the value of nRadius1

B.nRadius2 = 12

-- Set the value of nRadius2

B.nRadius3 = 16

-- Set the value of nRadius3

bSuccess = B:Measure(I,x,y)

-- Measure object at (x,y) in CImage I

Printf("Mag = %lg", B.nMag )

-- result: Mag = 15.256

Related Topics

CApphot, Copy, delete, new_apphot


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