spk_camera.hpp

#pragma once
 
#include "structure/design_pattern/spk_contract_provider.hpp"
#include "structure/math/spk_matrix.hpp"
#include "structure/math/spk_vector2.hpp"
#include "structure/math/spk_vector3.hpp"
#include "structure/math/spk_vector4.hpp"
 
namespace spk
{
    class Camera
    {
    private:
        spk::Matrix4x4 _projectionMatrix = spk::Matrix4x4::identity();
        spk::Matrix4x4 _inverseProjectionMatrix = spk::Matrix4x4::identity();
 
        spk::ContractProvider _onProjectionEditionContractProvider;
 
    public:
        Camera();

        void setPerspective(float p_fovDegrees, float p_aspectRatio, float p_nearPlane = 0.1f, float p_farPlane = 1000.0f);
        void setOrthographic(float p_left, float p_right, float p_bottom, float p_top, float p_nearPlane = 0.1f, float p_farPlane = 1000.0f);

        const spk::Matrix4x4 &projectionMatrix() const;
        const spk::Matrix4x4 &inverseProjectionMatrix() const;

        spk::Vector3 convertScreenToCamera(const spk::Vector3 &p_screenPosition) const;
        spk::Vector3 convertScreenToCamera(const spk::Vector2 &p_screenPosition) const;

        spk::ContractProvider::Contract subscribeToProjectionEdition(const spk::ContractProvider::Job &p_job);
    };
}