SimpleCamera.h

#pragma once
#include "Math/Vector.h"
#include "Math/Matrix.h"
#include "World/Transform.h"

struct SimpleCamera
{
private:
    Transform m_Transform;

    float m_ZNear               = 0.01f;
    float m_ZFar                = 100;
    float m_Aspect              = 0.0f;
    float m_FovY                = 60.0f;
    float m_NearFrustrumHeight  = 0.0f;
    float m_FarFrustrumHeight   = 0.0f;
    float m_Yaw                 = 0;
    float m_Pitch               = 0;
    bool m_ViewDirty            = true;

    Matrix4 m_View = Matrix4::Identity();
    Matrix4 m_Proj = Matrix4::Identity();

public:
    SimpleCamera();
    ~SimpleCamera();

public:
    Vector3 GetPosition()const;
    void    SetPosition(const Vector3& v);

    Vector3 GetRight()const;
    Vector3 GetUp()const;
    Vector3 GetForward()const;

    float GetNearZ()const;
    float GetFarZ()const;
    float GetAspect()const;
    float GetFovX()const;
    float GetFoxY()const;

    float GetNearWindowWidth()const;
    float GetNearWindowHeight()const;
    float GetFarWindowWidth()const;
    float GetFarWindowHeight()const;
    float GetFocalLength()const;

    // Pass FOV as degree.
    void SetFrustrum(float fovDeg, float aspect, float zNear, float zFar);
    // Pass FOV as degree.
    void SetFOV(float fovDeg);

    Matrix4 GetView()const;
    Matrix4 GetProj()const;
    Matrix4 GetViewProject()const;

    void Move(const Vector3& translate);
    void Rotation(const Vector3& euler);
    void Rotate(float yaw, float pitch);

    void LookAt(Vector3 target);

    void Update();
    void OnGui();
};