CLabels:new

CLabels:new

The new method constructs a new instance of a CLabels object. The CLabels class includes data members that control calculation of centroid positions. Various constructor overloads are available to create a new CLabels and initialize the data members.

Syntax

C = CLabels:new()

Creates a default CLabels with data members initialized to default values. You will need to attach this to a CImageView object.

C = CLabels:new( CImageView )

Creates a CLabels object and attaches it to the CImageView object.

C = CLabels:new( CLabels2 )

This is a copy constructor. It creates a new CLabels object initialized to the members of theCLabels2 argument. You will need to attach this to a CImageView object.

Remarks

If you use any constructor that does not use a CImageView object as an argument, then you must specify one using Attach method before labels can be drawn on an image.

Example

Suppose a CImageView V exists and displays 1 or more images. The following script fragment illustrates two forms of the new constructor. Both produce the same result:

L = CLabels:new( V )	-- create a new CLabels L attached to V
x = 192 ; y = 390	-- target coordinates
str = "My label text"	-- label coordinates
I = V:GetImage()	-- I is the current displayed image in V
L:Add( I, x, y str )	-- draw the label on the image

The following script fragment does the same thing but uses the 2-step attachment to a CImageView:

L = CLabels:new()	-- create a new CLabels L
x = 192 ; y = 390	-- target coordinates
str = "My label text"	-- label coordinates
L:Attach( V )	-- attach to the CImageView V
I = V:GetImage()	-- I is the current displayed image in V
L:Add( I, x, y str )	-- draw the label on the image