95 lines
2.5 KiB
C++
95 lines
2.5 KiB
C++
#include "camera.h"
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#include "./glm/gtc/matrix_transform.hpp"
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Camera *Camera::current_camera = nullptr;
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void Camera::bind() {
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make_current();
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model_view_matrix = glm::mat4(1);
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}
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void Camera::make_current() {
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current_camera = this;
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}
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Camera::Camera() {
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width = 2;
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height = 2;
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fov = glm::radians(45.0);
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position = glm::vec3(0, 0, 0);
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rotation = glm::vec3(0, 0, 0);
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scale = glm::vec3(1, 1, 1);
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}
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Camera::~Camera() {
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}
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void OrthographicCamera::bind() {
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Camera::bind();
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//fixed function pipeline
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//glMatrixMode(GL_PROJECTION);
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//glLoadIdentity();
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//glOrtho(bottom_left.x, top_right.x, bottom_left.y, top_right.y, near, far);
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//glTranslatef(position.x, position.y, 0);
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//glRotatef(rotation.x, 1, 0, 0);
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//glRotatef(rotation.y, 0, 1, 0);
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//glRotatef(rotation.z, 0, 0, 1);
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//glScalef(scale.x, scale.y, scale.z);
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projection_matrix = glm::ortho<float>(-(width / 2.0), width / 2.0, -(height / 2.0), height / 2.0);
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projection_matrix = glm::translate(projection_matrix, -position);
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projection_matrix = glm::rotate(projection_matrix, rotation.x, glm::vec3(1, 0, 0));
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projection_matrix = glm::rotate(projection_matrix, rotation.y, glm::vec3(0, 1, 0));
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projection_matrix = glm::rotate(projection_matrix, rotation.z, glm::vec3(0, 0, 1));
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projection_matrix = glm::scale(projection_matrix, scale);
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}
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OrthographicCamera::OrthographicCamera() : Camera() {
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}
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OrthographicCamera::~OrthographicCamera() {
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}
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void PerspectiveCamera::bind() {
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Camera::bind();
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//fixed fucntion pipeline
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//glMatrixMode(GL_PROJECTION);
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//glLoadIdentity();
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//glFrustum(bottom_left.x, top_right.x, bottom_left.y, top_right.y, near, far);
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//glTranslatef(position.x, position.y, position.z);
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//glRotatef(rotation.x, 1, 0, 0);
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//glRotatef(rotation.y, 0, 1, 0);
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//glRotatef(rotation.z, 0, 0, 1);
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//glScalef(scale.x, scale.y, scale.z);
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projection_matrix = glm::perspectiveFov<float>(fov, width, height, near, far);
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projection_matrix = glm::translate(projection_matrix, -position);
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projection_matrix = glm::rotate(projection_matrix, rotation.x, glm::vec3(1, 0, 0));
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projection_matrix = glm::rotate(projection_matrix, rotation.y, glm::vec3(0, 1, 0));
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projection_matrix = glm::rotate(projection_matrix, rotation.z, glm::vec3(0, 0, 1));
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projection_matrix = glm::scale(projection_matrix, scale);
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}
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PerspectiveCamera::PerspectiveCamera() : Camera() {
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near = 0.1;
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far = 10;
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}
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PerspectiveCamera::~PerspectiveCamera() {
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} |