FPSCamera.h

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#pragma once
 
#include "TRSTransform.h"
#include "InputHandler.h"
 
#include <glm/glm.hpp>
#define GLM_ENABLE_EXPERIMENTAL
#include <glm/gtx/io.hpp>
 
#include <chrono>
#include <iostream>
 
template<typename T, glm::precision P>
class FPSCamera
{
public:
    FPSCamera(T fovy, T aspect, T nnear, T nfar);
    ~FPSCamera();
 
public:
    void Update(std::chrono::microseconds deltaTime, InputHandler &ih, bool ignoreKeyEvents = false, bool ignoreMouseEvents = false);
    void SetProjection(T fovy, T aspect, T nnear, T nfar);
    void SetFov(T fovy);
    T GetFov();
    void SetAspect(T a);
    T GetAspect();
 
    glm::tmat4x4<T, P> GetViewToWorldMatrix();
    glm::tmat4x4<T, P> GetWorldToViewMatrix();
    glm::tmat4x4<T, P> GetClipToWorldMatrix();
    glm::tmat4x4<T, P> GetWorldToClipMatrix();
    glm::tmat4x4<T, P> GetClipToViewMatrix();
    glm::tmat4x4<T, P> GetViewToClipMatrix();
 
    glm::tvec3<T, P> GetClipToWorld(glm::tvec3<T, P> xyw);
    glm::tvec3<T, P> GetClipToView(glm::tvec3<T, P> xyw);
 
public:
    TRSTransform<T, P> mWorld;
    glm::tvec3<T, P> mMovementSpeed;
    glm::tvec2<T, P> mMouseSensitivity;
 
public:
    T mFov, mAspect, mNear, mFar;
    glm::tmat4x4<T, P> mProjection;
    glm::tmat4x4<T, P> mProjectionInverse;
    glm::tvec2<T, P> mMousePosition;
 
public:
    friend std::ostream &operator<<(std::ostream &os, FPSCamera<T, P> &v) {
        os << v.mFov << " " << v.mAspect << " " << v.mNear << " " << v.mFar << std::endl;
        os << v.mMovementSpeed << " " << v.mMouseSensitivity << std::endl;
        os << v.mWorld;
        return os;
    }
    friend std::istream &operator>>(std::istream &is, FPSCamera<T, P> &v) {
        T fov, aspect, nnear, far;
        is >> fov >> aspect >> nnear >> far;
        v.SetProjection(fov, aspect, nnear, far);
        is >> v.mMovementSpeed >> v.mMouseSensitivity;
        is >> v.mWorld;
        return is;
    }
};
 
#include "FPSCamera.inl"
 
typedef FPSCamera<float, glm::defaultp> FPSCameraf;
typedef FPSCamera<double, glm::defaultp> FPSCamerad;