Pointers can be used to represent pointers of a programming language. The pointer is visualized as a label with an arrow to the target of the pointer.
This is a method of the AV object. It creates a pointer that points to some JSAV object.
Parameter name is the (initial) name for the pointer. Parameter options include the following:
{left/top: <lengthUnit>} Values to determine the absolute position of the label relative to the pointer’s target.{anchor: <String>} Defines which position on the element being positioned to align with the target element. Should be in
format horizontal vertical. Possible horizontal values are “left”, “center”, “right” and vertical values “top”, “center”, “bottom”. Defaults to center center.{myAnchor: <String>} Similar to anchor, but the position on this element. Defaults to center center.{targetIndex: < Number>} If target is a JSAV array, this option can be used to target
an index in that array. Note, that it is better to simply pass the index as the target parameter to the constructor. You
can get the index with the array.index(ind) function.{fixed: <boolean>} A boolean indicating whether the pointer should move when it’s target changes.
Note, that if the pointer has a target when initialized, the pointer will still be positioned
relative to that target.{arrowAnchor: <String>} Similar to anchor, but the target position of the arrow. Defaults to top center.
In addition to values of anchor, can also be specified as percentages of width/height from top-left corner. For example,
0 50% would match the default value top center.Note: If you do not see the pointer arrow, it might be that the pointer is positioned outside the JSAV canvas and thus is not visible. Moving the target structure down should fix the issue.
A pointer instance has the functions of the Label object as well as the following functions.
If newTarget is not specified, returns the JSAV object this pointer points to. If
newTarget is a JSAV object, the pointer will be updated to point to that structure.
Valid options are the same as for the pointer constructor. If setting a new target,
the change is recorded in the animation and the function returns the pointer object.
Note: the position of the pointer is only updated once the jsav.step(),
jsav.displayInit(), or jsav.recorded() function is called.