Question Rotate an axis to raycast hit

hi, i have been trying to rote a parentedobject to ray cast hit , its not working correctly

Code (CSharp):

1. if (Physics.Raycast(UIManager.instance.cam.position, UIManager.instance.cam.forward, out hit, float.MaxValue, ~gameObject.layer))
2.         {
3.             Vector3 rotDir = hit.point - barell.position;
4.  
5.            
6.  
7.             var a = Quaternion.LookRotation(rotDir);
8.             var rotgoal2 = Quaternion.RotateTowards(barell.localRotation, a, 10);
9.             float rotgoal3 = Mathf.Clamp(rotgoal2.eulerAngles.x, 0, -45);
10.             barell.localRotation = Quaternion.Euler(rotgoal3, 0, 0);
11.            
12.             print(rotgoal3);
13.         }

 

What do you mean "rotate to raycast hit"? Rotate around the axis of the ray? Look at the direction of the ray? What

 

make object lookat the direction of the ray but only rotate it on the x axis of the direction, the object is also parented

 

Sorry it is still not understandable what you are trying to do. Rotate around the x axis of what? Whether its parented or not makes no difference if you use Transform.rotation instead of localRotation.

 

It's better if you describe the context, what is this barell and what are you trying to do.

 

its a child of a swat tank,the barrel is the for shooting the ammo, so when i aim upward i want it to rotate on its x axis that is clamped so as to aim at the height of the hitpoint

 

Ok then how do you acquire the target? If you are rotating the barrel up/down, you don't need a raycast, just map your rotation keys up/down to Transform.rotate your barrel around it's own local X axis, like

barrelTransform.Rotate(1f, 0f, 0f);

Is this good enough or do you actually need to raycast your target and do the "look at" with X axis only?

 

since I aim at the target with the camera, and not the barrell, i was preferin it to do a clamped rotation to the target

 

Look at the answer which is in local space. Replace body.up with body.right.

https://discussions.unity.com/t/lookat-locked-at-y-axis-but-in-local-space/85473