LEADTOOLS JavaScript (Leadtools.Annotations.Core)

HitTest Method (AnnPointerObject)

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The Leadtools.LeadPointD to be tested.
Threshold buffer value, in pixels.
Performs hit-testing on this AnnPointerObject.
Syntax
 function Leadtools.Annotations.Core.AnnPointerObject.hitTest( 
   point ,
   hitTestBuffer 
)

Parameters

ParameterTypeDescription
pointLeadPointDThe Leadtools.LeadPointD to be tested.
hitTestBufferdoubleThreshold buffer value, in pixels.

Return Value

TypeDescription
boolean A value that represents the hit-test value; or null if the test point is not on top of this AnnObject.
Remarks

The point should be in physical coordinates.

The hitTestBuffer is used to make the test point "bigger" to compensate for errors and provide smoother hit-testing. For example, if buffer is 2, a square with a length of 4 pixels around testPoint will be used to perform the hit-testing.

By default, an annotation object will return true if hit-testing was satisfied. Derived objects can override this method to fine tune the return value.

See Also

Reference

AnnPointerObject Object
AnnPointerObject Members

 

 


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