rotate offset

[Walter Soyka]

offset = -.5;
p = thisComp.layer("My Animated Layer");
t = time + offset;
p.rotation.valueAtTime(t);

Walter Soyka
Designer & Mad Scientist at Keen Live [link]
Motion Graphics, Widescreen Events, Presentation Design, and Consulting
@keenlive   |   RenderBreak [blog]   |   Profile [LinkedIn]

[Susan Lan]

Thanks Walter! I get this error, I take a capture, can you help me please?

https://i.imgur.com/YAJqgbm.jpg

9157_errorrotationoffset.jpg.zip

View post on imgur.com

[Walter Soyka]

Since it’s referring to a 3D layer:

p.transform.zRotation.valueAtTime(t);

Walter Soyka
Designer & Mad Scientist at Keen Live [link]
Motion Graphics, Widescreen Events, Presentation Design, and Consulting
@keenlive   |   RenderBreak [blog]   |   Profile [LinkedIn]

[Susan Lan]

I linked the rotation of the 3d null of the ligth
to the rotation ogf the 3d null (cam control) of the camera

Both nulls are 3D activated…

I’m not english, but I undertand “since” as “that is because”, no?

Corecct me please, Then you are saying that I must write:
offset = +.5;
p = thisComp.layer("Cam Control").transform.zRotation.valueAtTime(t);
t = time + offset;
p.rotation.valueAtTime(t);

instead of:
offset = +.5;
p = thisComp.layer("Cam Control").transform.zRotation;
t = time + offset;
p.rotation.valueAtTime(t);

yes? Thanks Walter!

[Walter Soyka]

p refers to a layer, not to the property. You’d need to change the property reference.

offset = -.5;
p = thisComp.layer("My Animated Layer");
t = time + offset;
p.transform.zRotation.valueAtTime(t);

Walter Soyka
Designer & Mad Scientist at Keen Live [link]
Motion Graphics, Widescreen Events, Presentation Design, and Consulting
@keenlive   |   RenderBreak [blog]   |   Profile [LinkedIn]

[Susan Lan]

Good mornig Walter! I just try it and, I want to aks you if it is normal this: ¿it is normal that only works: if, in the line “p” that refers to the layer we only write the name of the layer to which we want to follow the rotation (instead of select that line and pick/take the whip to parent to the z rotation)??:

offset = -.5;
p = thisComp.layer("Cam Control");
t = time + offset;
p.transform.zRotation.valueAtTime(t);


instead of this in line “p” of layer (this follow get error, ¿the reason is because we tell the “transform Z Rotation in “p” property line and because of that, is not necesary tell to it again in the “layer” line?

offset = -.5;
p = thisComp.layer("Cam Control").transform.zRotation;
t = time + offset;
p.transform.zRotation.valueAtTime(t);


Thanks you Walter

[Susan Lan]

I asked that, also because, it seems that the null of the AE-pointLigth rotates, but I can’t notice the offset, although I change -.5 to +.5
It still seems that the null of the ligth is linked to the null of the camera, both make the same rotation and position, but, I do not notice the sensation that the camera follows the light, I don’t know how to explain, I imagined to maked the ligth moving a little bit faster (time offset, no?) and that the camera follows, pursues the ligth (which in sometimes “dodge” (I don’t know the word) the camera)…

🙁

[Walter Soyka]

I’m getting a little lost. Can you post a screenshot of your entire UI so I can see the comp layers with some keyframes and understand better what you are applying these expressions to?

Walter Soyka
Designer & Mad Scientist at Keen Live [link]
Motion Graphics, Widescreen Events, Presentation Design, and Consulting
@keenlive   |   RenderBreak [blog]   |   Profile [LinkedIn]

[Susan Lan]

Good evening Walter!

Yes, thank you and sorry for the inconveniences, here I upload the image:

https://i.imgur.com/2GoYZCg.jpg

I write an expression into the: Position of the null of the ligth, to follow the position of the null of the camera (called “Cam Control”)
was this
thisComp.layer("Cam Control"); transform.position + [effect("Slider Control")("Slider"),effect("Slider Control 2")("Slider"),effect("Slider Control 3")("Slider")];

then I add it, inside the code of “position offset”:
offset = +.5;
p = thisComp.layer("Cam Control"); transform.position + [effect("Slider Control")("Slider"),effect("Slider Control 2")("Slider"),effect("Slider Control 3")("Slider")];
t = time + offset;
p.position.valueAtTime(t);


Then I write an expression into the: Rotation of the null of the ligth, to follow the Rotation Z of the null of the camera (called “Cam Control”).

I got this to the parent-follow:
thisComp.layer("Cam Control").transform.zRotation
But when I want to add it, into our expression of rotation offset I must remove the part
.transform.zRotation
To add, finally, like this (the expression yo tell me)
offset = +.5;
p = thisComp.layer("Cam Control");
t = time + offset;
p.transform.zRotation.valueAtTime(t);

P.D.: It does not looks good, because also I’m trying to turn the cone of ligth (the beam) in a manner that seems firstly that the beam are in Y axis , I mean, lookin at this frist:
https://cloud8.lbox.me/images/384×384/201203/ultrafire-decreto-xm-1000-l-t6-luz-tactica-linterna-color-camuflaje_anehzq1331188119397.jpg
and then animate the ligth beam

View post on imgur.com

[Walter Soyka]

I’ve rewritten your expression to try to make it a little clearer what it’s doing.

Position:
timeOffset = -1;
stopFollowingAtTime = 8;

referenceTime = Math.min(time + timeOffset, stopFollowingAtTime + timeOffset);
referenceLayer = thisComp.layer("LEADER");
positionOffset = [effect("offsetX")("Slider"),effect("offsetY")("Slider")];

value + referenceLayer.transform.position.valueAtTime(referenceTime) + positionOffset;

Rotation:
timeOffset = -1;
stopFollowingAtTime = 8;

referenceTime = Math.min(time + timeOffset, stopFollowingAtTime + timeOffset);
referenceLayer = thisComp.layer("LEADER");

value + referenceLayer.transform.zRotation.valueAtTime(referenceTime);

Please feel free to ask questions on anything above that’s unclear.

Walter Soyka
Designer & Mad Scientist at Keen Live [link]
Motion Graphics, Widescreen Events, Presentation Design, and Consulting
@keenlive   |   RenderBreak [blog]   |   Profile [LinkedIn]