private void RotateObject(GameObject obj)
{
//set the starting rotation.
obj.transform.rotation = Quaternion.Euler(prefabRotation);
//assign each rotation value by numOfFrames.
int direction = invertRotation ? -1 : 1;
float speed = 360f / numOfFrames * direction;
Vector3 speedPerFrame = Vector3.zero;
if (xRotation) speedPerFrame.x = speed;
if (yRotation) speedPerFrame.y = speed;
if (zRotation) speedPerFrame.z = speed;
//for each frame, Rotate object and snap a picture of it, and save it in the specified location.
for (int i = 0; i < numOfFrames; i++)
{
DirectoryInfo info = BuildDirectory(Application.dataPath, GIF_FramePath, obj.name + "_Frames");
FileInfo fileInfo = new FileInfo(Path.Combine(info.FullName, $"{i:000}.png"));
obj.transform.Rotate(speedPerFrame);
TakeSnapShot(fileInfo, obj, true);
}
}```#Gimble Lock Issue (I think)
inner siren
Singular rotation Axis: Loops fine
Multiple rotation Axis: Gimble lock (I think)
Anyone see why it would do this?
vale quest
Could try doing a Rotate for each axis, instead of applying all axes in one rotation call
Not sure
jolly crystal
Have you tried using Space.World in Transform.Rotate?
inner siren
Have you tried using `Space.World` in `Transform.Rotate`?
Yep! same thing happens
fossil stump
what exactly is happening that shouldn't be?
inner siren
the second gif, it doesnt loop. it skips if rotating on more than 1 axi
vale quest
Honestly it looks like it loops, but its like 1.5 rotations instead of 1
jolly crystal
Oh. If that kind of precision is required, don't use Rotate. There's no reason you need to be adding relative rotation at each frame, then you need to very carefully calculate the right delta. You can just calculate what angle it should be at for each frame and create a completely rotation for that.
inner siren
Oh. If that kind of precision is required, don't use `Rotate`. There's no reason...
How would I do that?
vale quest
How would I do that?
Something like this?
obj.transform.eulerAngles = speedPerFrame * i;```this isnt a runtime operation, it's in the editor so the forloop is required to set the rotation per numOfFrames and grab a picture of it
vale quest
Oops I changed numOfFrames to i
atomic nebula
ususaly if i need the axis spinng independ i make one gamobject per axis
jolly crystal
How would I do that?
Calculate a normalized t value for each frame and use that to lerp from the start rotation to the end rotation, in this case from angle 0 to 360.
Something like this:
Vector3 eulerAngles = Vector3.zero;
if (xRotation) eulerAngles.x = 1;
if (yRotation) eulerAngles.y = 1;
if (zRotation) eulerAngles.z = 1;
if (invertRotation) eulerAngles = -eulerAngles;
Quaternion startRotation = Quaternion.Euler(prefabRotation);
for (int i = 0; i < numOfFrames; i++)
{
float t = (float) i / numOfFrames;
float angle = 360 * t;
Quaternion rotation = Quaternion.Euler(eulerAngles * angle);
obj.transform.rotation = startRotation * rotation;
...
}
would that rotate from the starting rotation? obj.transform.rotation = Quaternion.Euler(prefabRotation);
so it'd add onto this ^
jolly crystal
Fixed
inner siren
are you casting i to float for the division calc (so it wont return 0) ?
rotating on all 3 Axi! holy shit
it has a weird arc, but perhaps thats normal haha
jolly crystal
are you casting i to float for the division calc (so it wont return 0) ?
Yeah, otherwise it will do integer division.
inner siren
Thank you very much!