#Camera zoom in script problem and learning how to implement stuff in code
inner spear
inner spear
If you look at the docs again, you'll see that translation is the name of the parameter. It's simply a vector.
pure trout
If you look at the docs again, you'll see that `translation` is the name of the ...
ohhhh
its a vector 3 component
inner spear
So, summing it up, it moves the object by that vector that you provide it.
pure trout
if the transform is a vector 3 component then why it is using another new vector 3 inside the transform
Translate(new Vector3(0, 0, dis))
inner spear
```Translate(new Vector3(0, 0, dis))```
That's not what it uses. It's what you provide it. You construct a new vector with (0, 0, dis) as the values.
And pass it into the function.
inner spear
The function copies your vector and puts it into translation and does what it's supposed to with it.
inner spear
and 0,0 is the distance
what?
pure trout
The function copies your vector and puts it into `translation` and does what it'...
ohk
but what about the inputs i provide within the new Vector3 component
hello?
inner spear
these are for constructing a new vector
if you have trouble understanding that, you can look at the Vector3 docs.
inner spear
It doesn't do anything on it's own. It just stores those values. What gives it meaning is how you use it.
inner spear
if you use it in rotation, you obviously interpret it as an angle. If you use it in Translate you interpret it as a position vector. Or a difference in position.
inner spear
```Translate(new Vector3(dis))```
No, that's not a correct way of creating a new vector.
pure trout
No, that's not a correct way of creating a new vector.
vector atleast take 2 values right?
pure trout
if you use it in rotation, you obviously interpret it as an angle. If you use it...
in rotation and translate thing is something i still didnt understand!
inner spear
Vector3 has 2 constructors as stated on the page that I linked. It either takes 2 or 3 parameters.
pure trout
Vector3 has 2 constructors as stated on the page that I linked. It either takes ...
tea
inner spear
in rotation and translate thing is something i still didnt understand!
what exactly do you not understand?
pure trout
what exactly do you not understand?
i mean where i used rotation?
inner spear
Doesn't matter where. It was hypothetically speaking. If you use it as A you want it to be something matching A. If you use it as B you want it to be something matching B.
pure trout
Doesn't matter where. It was hypothetically speaking. If you use it as A you wan...
you mean rotation means matching
inner spear
no, rotation is rotation
pure trout
then?
inner spear
A vector3 that is used for rotation is probably defined as angles in degrees
inner spear
A vector3 that is used for position is probably defined in unity units.
pure trout
here right
float rotationAroundXAxis = direction.y * 180; // camera moves vertically
cam.transform.position = target.position;
cam.transform.Rotate(new Vector3(1, 0, 0), rotationAroundXAxis);
cam.transform.Rotate(new Vector3(0, 1, 0), rotationAroundYAxis, Space.World); // <— This is what makes it work!```the direction is multiplied by degrees of angle
inner spear
Yes and no. In this case you only use 1 component of the vector. One of it's values. The x one. Which in your case represents only the x of the direction vector between positions.
you use it as some multiplier for the angle, yeah.
pure trout
Yes and no. In this case you only use 1 component of the vector. One of it's val...
i was thinking my prob was in one line only right?
inner spear
yeah, I was only planning to explain about the Translate but you got carried away asking basic questions about Vectors, methods and constructors.
Shall we get back to the topic?
pure trout
yeah, I was only planning to explain about the `Translate` but you got carried a...
yea i am pretty noob with this and also new
pure trout
Shall we get back to the topic?
yep
now i understand vectors
translations
and transform functions
inner spear
yea i am pretty noob with this and also new
You should really do some learning on vector math and beginner programming later.
So, going back to the topic: what was transform.Translate doing again?
pure trout
You should really do some learning on vector math and beginner programming later...
yea i will
Before unity i used to work with .net
and was also using .net things
in unity only
pure trout
So, going back to the topic: what was `transform.Translate` doing again?
yep
lets go back
hello?
pure trout
I'm waiting for an answer.
i was awaiting for your answer
pure trout
So, going back to the topic: what was `transform.Translate` doing again?
transform.translate is a vector struct
we provide it a vector component with the values we give it and it passes on the values to methods i think
inner spear
transform.Translate is not a vector struct. It's a function. But anyways, I ask of what it does in the actual game not what it is. And I thought it was already clear what it is doing...😅
pure trout
`transform.Translate` is not a vector struct. It's a function. But anyways, I as...
it will take the first values 0,0 and then takes the distance to keep the camera away from the pivot when rotated around the pivot
right?
inner spear
it will take the first values 0,0 and then takes the distance to keep the camera...
No. I'm not asking about your code specifically right now.
I'm asking about what it does in general.
pure trout
No. I'm not asking about your code specifically right now.
it will take values and then transform them to the game object
inner spear
If you forgot, go back to the docs page and read the description again.
pure trout
If you forgot, go back to the docs page and read the description again.
wait lemme
Moves the transform in the direction and distance of translation.
inner spear
Okay so what it does in short?
pure trout
Okay so what it does in short?
it will transform the object in the direction and distance of translation
i mean it will transform
so i should just give it direction as well right?
inner spear
No... Ok. let's go back to English lessons again. What's the verb in that sentence?
pure trout
No... Ok. let's go back to English lessons again. What's the verb in that senten...
transform
it is the verb
it does the work
inner spear
how is transform a verb? xD
inner spear
Ok I guess it can be a verb in some situations. But in this sentence it wouldn't make any sense if that was the verb
Ok, here's a gameobject
What's the first component that it has?
pure trout
What's the first component that it has?
ohhhhh my
never seen it
its the transform
the transform is a input
inner spear
I bet you've seen it many times, since every game object has it. 😅
pure trout
I bet you've seen it many times, since every game object has it. 😅
yea
i have never seen it
inner spear
Anyways, does that make it clear, that transform is not a verb in that sentence?
inner spear
Then what's the verb?
pure trout
transform is the inspector function
pure trout
verb is the translation
pure trout
moves?
inner spear
It's a noun
inner spear
Now let's go back: what does transform.Translate do in simple terms?
pure trout
Now let's go back: what does `transform.Translate` do in simple terms?
translation is a vector 3 struct
inner spear
That's not what I asked
pure trout
whenever i assign it a new vector it will have 3 values
which we can add in transform
inner spear
That's not what I asked
pure trout
then?
inner spear
what does transform.Translate do in simple terms?
go back to the docs if you've forgotten 😄
pure trout
go back to the docs if you've forgotten 😄
wait lemme read the docs then
pure trout
what does `transform.Translate` do in simple terms?
it will move the transform values from translate vector
inner spear
Okay, close. What I was expecting is something like It moves the object.
pure trout
Okay, close. What I was expecting is something like `It moves the object`.
lol
so i am wrong
I think
inner spear
You're simply adding too much meaning to it.
pure trout
You're simply adding too much meaning to it.
can you explain this pls?
inner spear
In the simplest form what it does is move the object.
pure trout
In the simplest form what it does is **move the object**.
ohhhhk
inner spear
If I ask you how print() works, I'm not asking you it's inner workings. Sure, it creates a string in the memory, passes it somewhere and does some stuff with it until eventually printing in the log and displaying on the screen. But just saying: it prints a message in the console is what it actually does.
inner spear
So now that you know what Translate does, let's look at your code again.
pure trout
So now that you know what Translate does, let's look at your code again.
yea
cam.transform.Translate(new Vector3(0, 0, dis));
here
it is moving the object with the values i am giving
inner spear
You call it and pass it some value when the mouse button is pressed. And you're doing it in update, so every frame.
let's translate it to simple words: it moves the object by some value as long as the mouse button is pressed.
pure trout
You call it and pass it some value when the mouse button is pressed. And you're ...
lol yea it is doing in every frame
inner spear
So, if your value is say 0 0 0, it would not move the object at all, but you're passing it (0, 0, someDistance), so it will move it on the Z axis by someDistance.
pure trout
let's translate it to simple words: it moves the object by some value as long as...
yea
inner spear
every frame
pure trout
when the mouse button is pressed it moves the values in every frame
pure trout
So, if your value is say 0 0 0, it would not move the object at all, but you're ...
ohhhhhhh
so i need (0,0,0)
nope
not gonna work
it kept all the position 0
ohhhh now i get it
inner spear
Let's say your distance to the object is 10. So, on the first frame, it will move the camera by 10 on the Z axis. If your camera was looking at the object, that will basically set it to the same position as the object. Then, next frame it moves by another 10 units. And then again.
pure trout
it keeps updating the z axis value as distance all the time
right?
if i keep all the values
inner spear
not updating, but doing something like transform.localPosition += 0, 0, distance.
pure trout
all x y and z as dis
pure trout
not updating, but doing something like transform.localPosition += 0, 0, distance...
yea
it is transforming the z axis as distance only
but shouldnt it go fine without errors
?
inner spear
There are no errors. It does exactly what you tell it to.
It goes the whole distance from the camera to the object in one frame.
pure trout
It goes the whole distance from the camera to the object in one frame.
ohhhhhhhhhh
inner spear
look at this line here:
You probably tested it before writing the rest of the code, right?
inner spear
And it worked
inner spear
What's the difference between this line and the one you have at the bottom?
It is space.Self by default
What's the other difference?
inner spear
pure trout
I am using a new vector 3
inner spear
inner spear
I am using a new vector 3
you're using a different value
inner spear
and also one that maps exactly to the distance between the camera and the object.
pure trout
i am using z value
inner spear
The value that you're using is bad.
pure trout
the same as i zoomed in and out
pure trout
The value that you're using is bad.
then what value should it be?
inner spear
In one you use scroll * 6, in the other dis.
inner spear
scroll * 6 is always in the range from -6 to 6
pure trout
i just need to use scroll * 6 value
inner spear
Actually no, it can probably go above and lower. But anyways, it represents the value of how much your scrollwheel moved during that frame.
now what does dis represent?
pure trout
Actually no, it can probably go above and lower. But anyways, it represents the ...
yea it does
pure trout
now what does `dis` represent?
dis represents the distance
between the camera
whereas the scroll is the value we get from scroll
inner spear
Yes. So you're basically zooming in by distance. Is that what you want?
pure trout
and multiply it to get the speed
pure trout
Yes. So you're basically zooming in by `distance`. Is that what you want?
nope
i dont
but how to get the correct value then?
inner spear
First decide what is the correct value?
inner spear
how much do you want your camera to move to the target each frame.
pure trout
how much do you want your camera to move to the target each frame.
according to the scroll
maybe
inner spear
Then, you know what to put in there.
pure trout
Then, you know what to put in there.
yeeeeee
cam.transform.Translate(new Vector3(0, 0, scroll * 6));
i tried it right now
it doesnt rotate with the zoom cuz it is used within as when the mouse is clicked
i tried to do this
cam.transform.Translate(new Vector3(0, 0, dise));
and used this
float dise = scroll * 6;
but most likely it isnt working
inner spear
Share your current code
pure trout
{
float scroll = Input.GetAxis("Mouse ScrollWheel");
cam.transform.LookAt(target);
cam.transform.Translate(0, 0, scroll * 6, Space.Self);
float dise = scroll * 6;
float dis = Vector3.Distance(cam.transform.position, target.transform.position);
if (Input.GetMouseButtonDown(0))
{
previousPosition = cam.ScreenToViewportPoint(Input.mousePosition);
}
else if (Input.GetMouseButton(0))
{
Vector3 newPosition = cam.ScreenToViewportPoint(Input.mousePosition);
Vector3 direction = previousPosition - newPosition;
float rotationAroundYAxis = -direction.x * 180; // camera moves horizontally
float rotationAroundXAxis = direction.y * 180; // camera moves vertically
cam.transform.position = target.position;
cam.transform.Rotate(new Vector3(1, 0, 0), rotationAroundXAxis);
cam.transform.Rotate(new Vector3(0, 1, 0), rotationAroundYAxis, Space.World); // <— This is what makes it work!
cam.transform.Translate(new Vector3(0, 0, dise));
previousPosition = newPosition;
cam.transform.LookAt(target);
}
}```
inner spear
Okay. Now looking at your rotation code, it's complete bullshit. At least in your use case.
pure trout
Okay. Now looking at your rotation code, it's complete bullshit. At least in you...
why?
can i continue it after 30 minutes
i was going to have breakfast
pls?
inner spear
Because it just rotates your camera in place. Not around the object.
inner spear
Because Transform.Rotate rotates the object around itself.
pure trout
Because Transform.Rotate rotates the object around itself.
and it was rotating to some z axis
inner spear
You should be using Transform.RotateAround if you want it to rotate around something else.
inner spear
I guess cam.transform.Translate in the end was an attempt of a walkaround to that, but it's bad
pure trout
I guess ` cam.transform.Translate` in the end was an attempt of a walkaround to ...
yea it is
thanks to you i understood many things today
inner spear
What I suggest you do is fin a tutorial that implements rotation and zoom of a camera around a point/object. I bet there are plenty of tutorials for that.