Create Vector3 from angle

Help Programming
,
1

Godot Version

4.4

Question

hi everyone

i am creating a tree generator and in my code i want to create a Vector3 with a angle in radian
here is my function

func getVectorFromAngle(angle: Vector3) -> Vector3:
	if angle.length_squared() == 0:
		return Vector3.UP
	else:
		return Vector3.UP.rotated(angle.normalized(), angle.length())

the verification is because Vector3.ZERO.normalized() = Vector3.ZERO

my problem is when i give 2.373648, 1.954769, 3.141593 in radians or 136, 112, 180 in degrees my function return 0.99398, -0.051876, -0.096506 this is realy close to 1, 0, 0 and 136, 112, 180 ist not 1, 0, 0 please help me

2

What if you just round the output vector like with snappedf?

3

what do you mean

4

If it’s very close to the vector you want, but just slightly off, you can snap it to the vector you want.

5

not it’s not what i want, the vector (1, 0, 0) is not the solution, the solution is -0.62456, 0.728653, 0.281052

6

i want to have a function who take a angle and return a vector pointing into this direction

7

But your function takes in a Vector3, not a float angle. I am not sure what Vector3 you want as an output then.

8

i take in a Vector3 and not a angle because i work in 3D and one angle is not enough

9

How about Basis.from_euler()? It seems like kind of a roundabout way because you would have to create a basis just to get its rotation but I think it’s the only built in method that does what you want

10

But your argument for angle is actually the length of the angle. I don’t know how that will result in the Vector3 you want.

11

the basis sound gut i want a Vector and i don’t know how the basis could help.

12

Maybe use quaternions? You’re kind of half reinventing them here.

13

The z property should contain the rotated vector you would expect

14

i think it’s working. thanks