sfw/camera.cpp

74 lines
1.9 KiB
C++

#include "camera.h"
#include "./libs/glm/gtc/matrix_transform.hpp"
void Camera::bind() {
make_current();
model_view_matrix = glm::mat4(1);
}
void Camera::make_current() {
current_camera = this;
}
Camera::Camera() {
width = 2;
height = 2;
fov = glm::radians(45.0);
position = glm::vec3(0, 0, 0);
rotation = glm::vec3(0, 0, 0);
scale = glm::vec3(1, 1, 1);
}
Camera::~Camera() {
}
Camera* Camera::current_camera = NULL;
void OrthographicCamera::bind() {
Camera::bind();
projection_matrix = glm::ortho<float>(-(width / 2.0),
width / 2.0,
-(height / 2.0),
height / 2.0);
projection_matrix = glm::translate(projection_matrix, -position);
projection_matrix = glm::rotate(projection_matrix, rotation.x, glm::vec3(1, 0, 0));
projection_matrix = glm::rotate(projection_matrix, rotation.y, glm::vec3(0, 1, 0));
projection_matrix = glm::rotate(projection_matrix, rotation.z, glm::vec3(0, 0, 1));
projection_matrix = glm::scale(projection_matrix, scale);
}
OrthographicCamera::OrthographicCamera() : Camera() {
}
OrthographicCamera::~OrthographicCamera() {
}
void PerspectiveCamera::bind() {
Camera::bind();
projection_matrix = glm::perspectiveFov<float>(fov, width, height, near, far);
projection_matrix = glm::translate(projection_matrix, -position);
projection_matrix = glm::rotate(projection_matrix, rotation.x, glm::vec3(1, 0, 0));
projection_matrix = glm::rotate(projection_matrix, rotation.y, glm::vec3(0, 1, 0));
projection_matrix = glm::rotate(projection_matrix, rotation.z, glm::vec3(0, 0, 1));
projection_matrix = glm::scale(projection_matrix, scale);
}
PerspectiveCamera::PerspectiveCamera() : Camera() {
near = 0.1;
far = 10;
}
PerspectiveCamera::~PerspectiveCamera() {
}