nZombies
Released
Cod Zombies Reimagined with a bunch of new content, Still in Early state, please report any bugs you find
swb_shared/util/CameraUtil.cs
Utility class with a single function to reproject a world-space point from one camera's view space into another camera's world-space position, taking into account relative orientation and field of view scaling.
using System;
/*
* Utility class for cameras
*/
namespace SWB.Shared;
public static class CameraUtil
{
public static Vector3 ProjectToViewSpace( Vector3 pos, CameraComponent vmCam, CameraComponent worldCam )
{
var to = pos - vmCam.WorldPosition;
var x = to.Dot( vmCam.WorldRotation.Right );
var y = to.Dot( vmCam.WorldRotation.Up );
var z = to.Dot( vmCam.WorldRotation.Forward );
if ( z <= 0.001f ) return pos;
var scale = MathF.Tan( MathX.DegreeToRadian( worldCam.FieldOfView ) * 0.5f )
/ MathF.Tan( MathX.DegreeToRadian( vmCam.FieldOfView ) * 0.5f );
x *= scale;
y *= scale;
return worldCam.WorldPosition
+ worldCam.WorldRotation.Right * x
+ worldCam.WorldRotation.Up * y
+ worldCam.WorldRotation.Forward * z;
}
}