Camera.java

public class Camera extends Vector3{
    private Vector3 directionVector; 
    public double fov = 90;
    public Vector3 up = new Vector3(0, 1, 0);
    //yaw
    private double hAngle; 
    //pitch
    private double vAngle; 
    //clippy plains
    double near = 0.01;
    double far = 10000;
    private double renderPlaneDistance = 50;
    private double renderPlaneWidth;
    private double lastMouseX = 0;
    private double lastMouseY = 0;
    Camera(Vector3 p, double f) {
        super(p.x,p.y,p.z);
        hAngle = 0;
        vAngle = 0;
        directionVector = Vector3.angleToVector(hAngle, vAngle);
        setFov(f);
        directionVector = Vector3.angleToVector(hAngle, vAngle);
    }
    public void setFov(double fovIn)
    {
        fov = Math.toRadians(fovIn);
        //calculates a bespoke value based on the FOV
        renderPlaneWidth = Math.tan(fov/2)*renderPlaneDistance*2;
    }

    public void translate(Vector3 t) {
        super.add(t);
    }
    public void lookAt(Vector3 pos)
    {
        hAngle = (pos.x-super.x < 0)? -Math.atan((pos.z-super.z)/(pos.x-super.x))-Math.PI/2 : Math.PI/2-Math.atan((pos.z-super.z)/(pos.x-super.x));

        vAngle = Math.atan((pos.y-super.y)/(Math.sqrt((pos.x-super.x)*(pos.x-super.x) + (pos.z-super.z)*(pos.z-super.z))));
        
        hAngle%=Math.PI;
        vAngle%=Math.PI;
        directionVector = Vector3.angleToVector(hAngle, vAngle);
    }
    public void updateOrientation(double mouseX, double mouseY, double sensitivity) {
        //double mouseDeltaX = mouseX- lastMouseX;
        //double mouseDeltaY = mouseY- lastMouseY;
        hAngle += mouseX * sensitivity; // Adjust the yaw based on the mouse's horizontal movement
        vAngle -= mouseY * sensitivity; // Adjust the pitch based on the mouse's vertical movement

        // clamp ing
        if (vAngle > Math.PI / 2) {
            vAngle = Math.PI / 2;
        } else if (vAngle < -Math.PI / 2) {
            vAngle = -Math.PI / 2;
        }

        directionVector = Vector3.angleToVector(hAngle, vAngle);
        lastMouseX = mouseX;
        lastMouseY= mouseY;
        System.out.println("New Rotation! New camera rotation is ("+vAngle+", "+hAngle+")");
    }
    public static double dotProduct(Vector3 a, Vector3 b)
    {
        return a.x*b.x+a.y*b.y+a.z*b.z;
    }
    public static Vector3 crossProduct(Vector3 a, Vector3 b)
    {
        return new Vector3(a.y*b.z-a.z*b.y, a.z*b.x-a.x*b.z, a.x*b.y-a.y*b.x);
    }
    public double getRenderPlaneWidth(){
        return renderPlaneWidth;
    }
    @Override
    public String toString() {
        return super.toString();
    }
    public Vector3 getDirectionVector() {
        return directionVector;
    }
    public double getHorientation()
    {
        return hAngle;
    }

    public double getVorientation()
    {
        return vAngle;
    }
    public double getRenderPlaneDistance() {
        return renderPlaneDistance;
    }
}