YAxisPoint Property
Applies To
Vision Objects: Frame
Description
Defines the vision object to be used as the Y axis point for a Frame object.
Usage
VGet Sequence.Object.YAxisPoint, var
VSet Sequence.Object.YAxisPoint, 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 YAxisPoint
property are: Blob, Correlation, Edge, Line, and Point objects. The YAxisPoint 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 YAxisPoint 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 vision object execution can be adjusted from the Sequence Tab.)
When using the point and click interface click on the YAxisPoint property Value Field. Then click on the
arrow and 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 Y Axis direction 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 YAxisPoint 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 YAxisPoint and displays only
those object names in the drop down list.
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NOTE
See Also
Vision Guide 5.0 Reference (Ver.5.3) Rev.1 197