Thank you for your question! While we don't have anything specific to "pulse" graphics in the API, you can accomplish this by setting up your own timer and changing one or more graphicsOverlay, graphics, or symbol properties when the timer fires. Below are two examples: the first one changes the opacity of the graphics overlay containing the graphic to pulse; the second one changes the size of the symbol associated with the graphic.
The code to create the timer is as follows:
var timer = Timer()
...
timer = Timer.scheduledTimer(timeInterval: 0.02,
target:self,
selector: #selector(pulseGraphic),
userInfo: nil,
repeats: true)
And the "pulseGraphic" method to adjust the overlay opacity:
var opacity: Float = 0.0
var goingDown: Bool = true
func pulseGraphic() {
opacity = opacity + (goingDown ? -0.01 : 0.01)
if opacity < 0.25 {
goingDown = false
}
else if opacity > 1.0 {
goingDown = true
}
else {
animationGraphicsOverlay.opacity = opacity
}
}
Hope that helps. If you have further questions, let me know.
Mark
