Rotation of a level (CW and CCW)

[anon_33848665]

Hello dear unity gurus

I am having a little problem with a script for the android which has to turn a level clockwise and counterclockwise depending on the angle of the moved finger, so far i am stuck at trying to get it to work on the computer

if (Input.GetMouseButtonDown(0))
{
newPos.x = (Screen.width / 2) - Input.mousePosition.x;
newPos.y = (Screen.height / 2) - Input.mousePosition.y;

Vector3 localTarget = transform.InverseTransformPoint(newPos);
float targetAngle = Mathf.Atan2(localTarget.x, localTarget.z) * Mathf.Rad2Deg;
Debug.Log(targetAngle);

// Compares and gets the angle we need to rotate our level by measuring the angling of the finger movement
float angle = Vector2.Angle(oldPos, newPos);
// Rotates by the above defined angle
transform.Rotate(0,angle,0);
}

// fLAPS

[anon_33848665]

bumps

[mswehli]

im having a similar problems with the Vector2.Angle function. it always reads 90º for some reason. i’m comparing a Vector2.zero to a joystick position(x and y are between -1 and 1) to try to get the rotation angle.
If anyone knows how to fix it would be very helpful. thanks.

Heres my code snipet:

var joystickAngle = Vector2.Angle(Vector2.zero,rightJoystick.position);
Debug.Log("Joystick position : " + rightJoystick.position);
Debug.Log("Joystick Angle: " + joystickAngle);

And here are some examples of the debug log that shows the angle:

Joystick position : (1.0, 1.0)
Joystick Angle: 90

Joystick position : (-1.0, 1.0)
Joystick Angle: 90

Joystick position : (-1.0, -0.4)
Joystick Angle: 90

[anon_41058545]

Fun learning times ahead for both of you:

Trigonometry

Dot product

[mswehli]

Ya, i know how to get it mathematically but didn’t see the point as there was already a function.
Anyway turns out the first vector2 isn’t supposed to be a reference for the the centre of the circle, but it actually a second vector to compare it to.
So all i needed to do was change the first Vector2 to Vector2(0,1) and it works. but as it only goes between 0 and 180, i modify it a little. to get the actual value.

Thanks for the help anyway FluidPixel

Incase anyone is interested, new code is simply:

var joystickAngle = Vector2.Angle(Vector2(0,1),rightJoystick.position);
if(rightJoystick.position.x<0)
joystickAngle *= -1;

Seems to work.