Calls a function when the mouse wheel scrolls over the element.
The callback function, fxn
, is passed an event
object. event
has two numeric properties, deltaY
and deltaX
. event.deltaY
is negative if the mouse wheel rotates away from the user. It's positive if the mouse wheel rotates toward the user. event.deltaX
is positive if the mouse wheel moves to the right. It's negative if the mouse wheel moves to the left.
Calling myElement.mouseWheel(false)
disables the function.
Examples
Syntax
mouseWheel(fxn)
Parameters
fxn
function to call when the mouse wheel is scrolled over the element. false
disables the function.
Notice any errors or typos? Please let us know. Please feel free to edit src/core/p5.Element.js and open a pull request!