114 lines
2.7 KiB
C++
114 lines
2.7 KiB
C++
#include "Camera.h"
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namespace NB {
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// Camera class
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Camera::Camera(const Vec3& pos, const Vec3& tar, const Vec3& up) : _camera_type(CameraType::None) {
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_pos = pos;
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_tar = tar;
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_world_up = glm::normalize(up);
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_dir = glm::normalize(_tar-_pos);
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_right = normCross(_dir, _world_up);
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_up = normCross(_right, _dir);
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_proj = glm::ortho(-1.0f, 1.0f, -1.0f, 1.0f, -1.0f, 1.0f);
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_calcLook();
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}
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void Camera::_calcLook() {
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_look = glm::lookAt(_pos, _tar, _world_up);
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}
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glm::vec3 Camera::normCross(const Vec3& a, const Vec3& b) {
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return glm::normalize(glm::cross(a, b));
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}
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glm::vec3 Camera::getPos() const { return _pos; }
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glm::vec3 Camera::getTarget() const { return _tar; }
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glm::vec3 Camera::getDirection() const { return _dir; }
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glm::vec3 Camera::getWorldUp() const { return _world_up; }
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glm::vec3 Camera::getUp() const { return _up; }
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glm::vec3 Camera::getRight() const { return _right; }
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glm::mat4 Camera::getLookMatrix() const { return _look; }
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glm::mat4 Camera::getProjectionMatrix() const { return _proj; }
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glm::mat4 Camera::getFlattenedMatrices() const { return _proj * _look; }
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void Camera::setProjection(const Mat4& proj) {
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_proj = proj;
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}
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void Camera::setPos(const Vec3& pos) {
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_pos = pos;
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_calcLook();
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}
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void Camera::setTarget(const Vec3& tar) {
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_tar = tar;
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_dir = glm::normalize(_tar-_pos);
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_right = normCross(_dir, _world_up);
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_up = normCross(_right, _dir);
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_calcLook();
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}
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void Camera::setDirection(const Vec3& dir) {
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setTarget(glm::normalize(dir)+_pos);
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}
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void Camera::setWorldUp(const Vec3& up) {
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_world_up = up;
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_right = normCross(_dir, _up);
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_up = normCross(_right, _dir);
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_calcLook();
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}
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void Camera::addPos(const Vec3& add) {
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_pos += add;
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_dir = glm::normalize(_tar-_pos);
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_right = normCross(_dir, _world_up);
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_up = normCross(_right, _dir);
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_calcLook();
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}
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void Camera::panPos(const Vec3& add) {
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_tar += add;
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addPos(add);
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}
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void Camera::panPosRelative(const Vec3& add) {
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panPos(add.x*_right + add.y*_up + add.z*_dir);
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}
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void Camera::addTarget(const Vec3& add) {
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_tar += add;
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_dir = glm::normalize(_tar-_pos);
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_right = normCross(_dir, _world_up);
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_up = normCross(_right, _dir);
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_calcLook();
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}
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void Camera::roll(float ang) {
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}
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void Camera::pitch(float ang) {
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Mat4 rot_mat = glm::rotate(Mat4(1.0f), ang, _right);
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_dir = Vec3(rot_mat * glm::vec4(_dir, 1.0f));
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_tar = _pos + _dir;
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_calcLook();
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}
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void Camera::yaw(float ang) {
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Mat4 rot_mat = glm::rotate(Mat4(1.0f), ang, _up);
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_dir = Vec3(rot_mat * glm::vec4(_dir, 1.0f));
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_right = Vec3(rot_mat * glm::vec4(_right, 1.0f));
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_tar = _pos + _dir;
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_calcLook();
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}
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} |