Camera.cpp

#include "Camera.h"

Camera::Camera(int height, int width, glm::vec3 position) {
    cameraPos = position;
    this->height = height;
    this->width = width;
    this->Orientation = glm::normalize(glm::vec3(0.0f, 0.0f, 0.0f) - cameraPos);
}

void Camera::Matrix(float FOVdeg, float nearPlane, float farPlane, Shader &shader, const char *uniform) {
    glm::mat4 view = glm::mat4(1.0f);
    glm::mat4 projection = glm::mat4(1.0f);

    view = glm::lookAt(cameraPos, cameraPos + Orientation, Up);
    projection = glm::perspective(glm::radians(FOVdeg), (float) width / (float) height, nearPlane, farPlane);

    glUniformMatrix4fv(glGetUniformLocation(shader.ID, uniform), 1, GL_FALSE, glm::value_ptr(projection * view));
}

void Camera::Inputs(GLFWwindow *window) {
    if (glfwGetKey(window, GLFW_KEY_W) == GLFW_PRESS) {
        cameraPos += speed * Orientation;
    }
    if (glfwGetKey(window, GLFW_KEY_S) == GLFW_PRESS) {
        cameraPos -= speed * Orientation;
    }
    if (glfwGetKey(window, GLFW_KEY_A) == GLFW_PRESS) {
        cameraPos -= glm::normalize(glm::cross(Orientation, Up)) * speed;
    }
    if (glfwGetKey(window, GLFW_KEY_D) == GLFW_PRESS) {
        cameraPos += glm::normalize(glm::cross(Orientation, Up)) * speed;
    }
    if (glfwGetKey(window, GLFW_KEY_SPACE) == GLFW_PRESS) {
        cameraPos += speed * Up;
    }
    if (glfwGetKey(window, GLFW_KEY_LEFT_CONTROL) == GLFW_PRESS) {
        cameraPos -= speed * Up;
    }
    if (glfwGetKey(window, GLFW_KEY_LEFT_SHIFT) == GLFW_PRESS) {
        speed = 0.1f;
    } else if (glfwGetKey(window, GLFW_KEY_LEFT_SHIFT) == GLFW_RELEASE) {
        speed = 0.01f;
    }
}