[Eva Lepik]

Thanks or the replies.

Probably I could have given more details, why I’m using CC composite, etc.
As I’m making a template, the goal is to be able to drag an effects comp on top of any footage (without a need to duplicate footage and change blend modes).

And CC composite (after which come other color adjustment effects) gave a look I aimed for.
Anyhow seems that I can do almost the same look with certain Curves settings. And Curves comes through even
when collapse transformations switch is on.

Eva

[Eva Lepik]

Hi Dan,

The last version you gave me, works also with the sliders, many thanks!
I get most of the lines, but I was wondering about the tMax value you state in the beginning (-99999), could you explain why it needs to be that?
I have previously used only quite simple expressions and don’t yet understand many elements, therefore the question.

With regards,
Eva

[Eva Lepik]

Wow!
This works like a charm.
Thank you so much. I will now study this to try to understand every bit of it.

With linking interpolation duration (which now is 30 frames every time) to slider,
I meant to make it possible to vary duration for every interpolation time separately.
For example there is a slider on TR1 which has value 20, slider on TR2 has value 30, slider on TR3 has value of 10 etc.

Thanks again,
Eva

[Eva Lepik]

Hi Dan,

Yes, I forgot to tell that – when there are no layer markers, it should keep the blur value at 0.
Based on some expression written here by you, Dan, I changed it a bit and got this – and it works now ☺

But how could I change it so that it looks to layer markers of a range of layers (named TR1, TR2, TR3, etc.), not to the layer markers of the same layer where the expression is?

If that would be possible, then I would further wish
– to link start time and end time of interpolation to slider which is on the layer which marker at certain time is calculated. Each layer will only have 1 marker (or no markers at all).

It sounds really complicated (at least for me and now), but I have seen that studying parts of your expressions here can help a long way. I am thinking many if else conditions but is there perhaps a shorter way to do this?

Thanks for your answer,
Eva

maxY = 50;
minY = 0;
n = 0;
if (marker.numKeys > 0){
n = marker.nearestKey(time).index;
if (marker.key(n).time >= time){
n++;
if (n > marker.numKeys) n = 0;
}
}
if (n > 0){
if (marker.key(n).comment == "H")
Math.min (ease(time,marker.key(n).time,marker.key(n).time+framesToTime(30/2),minY,maxY),
ease(time,marker.key(n).time+framesToTime(30/2),marker.key(n).time+framesToTime(30),maxY,minY))
}else
{
0
}

[Eva Lepik]

Hi again Steve,

Thanks for the advice, that helped!

But as the resulted animation hold the focus distance until next keyframe (clamped, or maybe this is a wrong word), after trial and error I came up with the expression below:
This works, also if there are no keyframes on the layer index slider.

I’m pretty sure it could be shorter or written in a better form, but it seams to hold the focus on the layer on all cases ☺
Maybe that’s useful for someone else, too.

Regards,
Eva

x = thisComp.layer(2).effect("Focus on layer")("Slider");
n = 0;
try {
if (x.numKeys > 0) { // if there are keyframes
n = x.nearestKey(time).index;
if (x.key(n).time > time) n--;
}
if (n > 0 && x.numKeys >= n+1 ) { // if there is 1 more keyframe after current keyframe
t = time;
tMin = x.key(n).time;
tMax = x.key(n+1).time;
y1 = x.key(n).value;
y2 = x.key(n+1).value;
z1 = thisComp.layer(y1).position[2];
z2 = thisComp.layer(y2).position[2];
CamPos1 = thisComp.layer("Cam control").position.valueAtTime(tMin)[2];
CamPos2 = thisComp.layer("Cam control").position.valueAtTime(tMax)[2];
value1 = z1-(CamPos1); // Z position of layer 1 - Z position of cam
value2 = z2-(CamPos2); // Z position of layer 2 - Z position of cam

ease(t, tMin, tMax, value1, value2);
}
else if (n > 0 && x.numKeys = n ) { // if this is the last keyframe
y1 = x.key(n).value;
z1 = thisComp.layer(y1).position[2];
CamPos = thisComp.layer("Cam control").position[2];
cameraOption.focusDistance = z1 - CamPos;
}
else {
x = Math.round(clamp (thisComp.layer(2).effect("Focus on layer")("Slider"), 5, thisComp.numLayers));
L = thisComp.layer(x).position[2];
CamPos = thisComp.layer("Cam control").position[2];
L - CamPos
}}
catch (e) {
}


[Eva Lepik]

Hi Steve,

Thanks for the reply.
I put this expression to slider to avoid it hits 0, and this seems to work ok (below).

That’s why I don’t understand the reason it gives me ‘out of range’ error.
Right now the slider value is 6, and still the error is there.

Regards,

Math.round(clamp(value, min=5, max=thisComp.numLayers));

[Eva Lepik]

Thank you, Steve!

That’s awesome :))
I wouldn’t have found the error myself, as I ‘m just starting out with conditional expressions.

Regards,
Eva