OrthoCamera.h

#pragma once
#include "ICamera.h"
 
 
class OrthoCamera : public ICamera {
public:
 
 
    OrthoCamera()
    {
        _scale = 1.0f;
        eyePos = glm::vec3(0.f, 0.f, -770.0f);
        aimPos = glm::vec3(0.f, 0.f, 0.f);
    }
    ~OrthoCamera()
    {
 
    }
 
    void init() override {
 
        _projectionMatrix = glm::ortho(0.0f, (float)_screenWidth, 0.0f, (float)_screenHeight);
 
        updateCameraOrientation();
 
        _cameraMatrix = glm::mat4(1.0f);
 
        _cameraMatrix = _projectionMatrix * _viewMatrix;
    }
 
    void update() override {
 
        if (_cameraChange) {
            updateCameraOrientation();
 
            _cameraMatrix = glm::mat4(1.0f);
 
            _cameraMatrix = _projectionMatrix * _viewMatrix;
        }
    }
 
    
 
    glm::vec3 getEulerAnglesFromDirection(glm::vec3 direction) {
        float yaw = glm::atan(direction.x, direction.z);
        float pitch = glm::asin(-direction.y);
        float roll = 0.0f;
 
        return glm::vec3(glm::degrees(pitch), glm::degrees(yaw), glm::degrees(roll));
    }
 
 
    //getters
 
    glm::ivec2 getCameraDimensions() const override {
        glm::vec2 cameraDimensions = { _screenWidth, _screenHeight };
        return cameraDimensions;
    }
 
    SDL_FRect getCameraRect() const override {
        float cameraWidth = getCameraDimensions().x / getScale();
        float cameraHeight = getCameraDimensions().y / getScale();
 
        float cameraX = eyePos.x - cameraWidth / 2.0f + getCameraDimensions().x / 2;
        float cameraY = eyePos.y - cameraHeight / 2.0f + getCameraDimensions().y / 2;
 
        SDL_FRect cameraRect = { cameraX , cameraY , cameraWidth, cameraHeight };
        return cameraRect;
    }
 
    void setCameraMatrix(glm::mat4 newMatrix) {
        _cameraChange = true;
    }
 
};