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OriginPoint Property
Applies To
Vision Objects: Frame
Description
Defines the vision object to be used as the origin point for a Frame object.
Usage
VGet Sequence.Object.OriginPoint, var
VSet Sequence.Object.OriginPoint, value
Sequence
Name of a sequence or string variable containing a sequence name.
Object
Name of an object or string variable containing an object name. The object must exist in the
specified sequence.
var
String variable that will contain the value of the property.
value
String expression for the new value of the property. Valid vision objects for the OriginPoint
property are Blob, Correlation, Edge, Line, and Point objects. The OriginPoint may also be
based on the Screen position of the Frame.
Values
Screen or any object that runs prior to the frame and returns PixelX and PixelY results.
Default: Screen
Remarks
When a Frame object is first drag-and-dropped onto the Image Display area of the Vision Guide Window,
the default OriginPoint property is set to Screen. Frame objects are normally attached to other Vision
objects. This is the purpose of the OriginPoint and YAxisPoint. Through these 2 properties the user can
define a frame of reference for other objects to have their position based upon. This capability is useful
when specific features can be used to find reference points on a part and then other vision objects can be
located on the image with respect to the frame position defined.
The OriginPoint and YAxisPoint properties are used together to define a vision frame which has an origin
at the OriginPoint and a Y Axis direction defined by the YAxisPoint property.
It is important to note that for each specific vision sequence, only those vision objects which are executed
prior to the Frame object in the vision sequence steps will be available to use as an OriginPoint. (The order
of the vsion object execution can be adjusted from the Sequence Tab.)
When using the GUI to change the OriginPoint property Value, a drop down list will appear showing a list
of available vision objects (along with the default value Screen) which can be used to define the Origin of
the Frame. Click on one of the choices and the value field will be set accordingly.
When using the Object tab to set the OriginPoint property it is important to note that only those objects
which are defined prior to the Frame object are displayed in the drop down list. This helps reduce the
chances of the user defining an OriginPoint which isn't defined prior to the Frame object.
Vision Guide automatically checks which vision objects can be used as the OriginPoint and displays only
NOTE
those object Names in the drop down list.
Vision Guide 5.0 Reference (Ver.5.3) Rev.1
OriginPoint Property
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