#include "Light.h"
#include <cmath>

Light::Light()
        : m_Position(0.0f, 10.0f, 0.0f),
          m_Target(0.0f, 0.0f, 0.0f),
          m_Up(0.0f, 1.0f, 0.0f),
          m_ViewMatrix(dae::Matrix()),
          m_ProjectionMatrix(dae::Matrix()) {}

void Light::SetPosition(const dae::Vector3 &position) {
    m_Position = position;
}

void Light::SetTarget(const dae::Vector3 &target) {
    m_Target = target;
}

void Light::SetUp(const dae::Vector3 &up) {
    m_Up = up;
}

dae::Matrix Light::GetViewMatrix() const {
    return dae::Matrix::CreateLookAtLH(m_Position, m_Target, m_Up);
}

dae::Matrix Light::GetProjectionMatrix(float nearPlane, float farPlane, float size) const {
    return dae::Matrix::CreateOrthographic(size, size, nearPlane, farPlane);
}
dae::Matrix Light::GetViewProjectionMatrix(float nearPlane, float farPlane, float size) const {
    return GetViewMatrix() * GetProjectionMatrix(nearPlane, farPlane, size);
}
void Light::Update() {
    // If the light position or target changes dynamically, this is where updates would be managed.
//    m_ViewMatrix = dae::Matrix::CreateLookAtLH(m_Position, m_Target, m_Up);
//    m_ProjectionMatrix = dae::Matrix::CreateOrthographic(size, size, nearPlane, farPlane);
}

dae::Vector3 Light::GetTarget() {
    return m_Target;
}

dae::Vector3 Light::GetPosition() {
    return m_Position;
}