Count up to number expression

Hi Guys,

My maths isn't great but I'm wondering if someone can help me to count up to a particular number in an easing manner.

So far I have this

Code: Select all

math.floor(17500000+log(time/30))

which eases TO the number but not from, and it doesn't ease from much, only about 8 integers before hand.

If using this method I'd need it to start a lot sooner, preferably from 0, but it might work if it's just an arbitrary number like 40,000 as it'll count so quickly up from there you may not notice.

Not sure if I understand it correctly, but if you mean counting up from say x to y in integers in an easing way in say z frames, 1st thing that comes to mind is using a sine function. For instance, in the below function it counts from 10 to 19 during 90 frames in an easing way:

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floor(10 + 10*(sin(rad(((time*180/90)%180)-90))+1)/2)

It then goes and repeat (but you could change that of course)

Just thinking, and I'm unsure if it would fit your purposes, but an easier way even would be to just animate a variable and add an ease via the spline editor. And then basically, in the "final" value, just have a simple expression that applies a floor or ceil to the animated variable.

Quick example:

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{
   Tools = ordered() {
      Text2 = TextPlus {
         CtrlWZoom = false,
         Inputs = {
            Width = Input { Value = 1920, },
            Height = Input { Value = 1080, },
            ["Gamut.SLogVersion"] = Input { Value = FuID { "SLog2" }, },
            Font = Input { Value = "Open Sans", },
            StyledText = Input {
               Value = "50",
               Expression = "floor(basevalue)",
            },
            Style = Input { Value = "Bold", },
            ManualFontKerningPlacement = Input {
               Value = StyledText {
                  Array = {
                  },
                  Value = ""
               },
            },
            basevalue = Input {
               SourceOp = "Text2basevalue",
               Source = "Value",
            },
         },
         ViewInfo = OperatorInfo { Pos = { 825, 247.5 } },
         UserControls = ordered() {
            basevalue = {
               LINKS_Name = "basevalue",
               LINKID_DataType = "Number",
               INPID_InputControl = "SliderControl",
               INP_Integer = false,
               ICS_ControlPage = "Text"
            }
         }
      },
      Text2basevalue = BezierSpline {
         SplineColor = { Red = 20, Green = 92, Blue = 230 },
         NameSet = true,
         KeyFrames = {
            [0] = { 25, RH = { 33.3333333333333, 25 } },
            [100] = { 50, LH = { 66.6666666666667, 50 } }
         }
      }
   },
   ActiveTool = "Text2"
}

You absolute gentleman, thanks very much for the help!
I'll try both of these solutions shortly.

After farrrr too long revisiting high-school maths, I came up with this ->

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math.floor((17.5*(1-exp(-time*0.2)))*100)/100

That reaches 17.5 from 0 with 2 decimal places, albeit with no smooth take off (need a bezier for this) but I can deal with it for now.

I use the number literally, in text, though as you've pointed out, I could animate something with it also - which I may well do, but elsewhere we can use splines and super handy curves for this - I needed to do this programmatically though and I can see loads of use cases for animating things based on an unknown clip-length for example - great for creating re-usable content which I'd like to do. The overhead of making a title per-video sucks at the moment.

You may want to check out this:

https://www.steakunderwater.com/wesuckl ... f=6&t=2622

Some incredible work by Eric!

Thanks Okke! That's exactly what I'm after!
I'm away on holiday of the summer here (Perth, Australia) but I'll look into implementing this when I get back. It comes as a script - which I've not dealt with in Resolve before - but the options look awesome - pretty much can use that to animate anything and as you say!