mirror of
https://github.com/MaSzyna-EU07/maszyna.git
synced 2026-03-22 15:05:03 +01:00
79 lines
2.3 KiB
C++
79 lines
2.3 KiB
C++
/*
|
|
This Source Code Form is subject to the
|
|
terms of the Mozilla Public License, v.
|
|
2.0. If a copy of the MPL was not
|
|
distributed with this file, You can
|
|
obtain one at
|
|
http://mozilla.org/MPL/2.0/.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include "GL/glew.h"
|
|
#include "frustum.h"
|
|
#include "scene.h"
|
|
|
|
// simple camera object. paired with 'virtual camera' in the scene
|
|
class opengl_camera {
|
|
|
|
public:
|
|
// constructors
|
|
opengl_camera() = default;
|
|
// methods:
|
|
inline
|
|
void
|
|
update_frustum() { update_frustum( m_projection, m_modelview ); }
|
|
void
|
|
update_frustum( glm::mat4 const &Projection, glm::mat4 const &Modelview );
|
|
bool
|
|
visible( scene::bounding_area const &Area ) const;
|
|
bool
|
|
visible( TDynamicObject const *Dynamic ) const;
|
|
inline
|
|
glm::dvec3 const &
|
|
position() const { return m_position; }
|
|
inline
|
|
glm::dvec3 &
|
|
position() { return m_position; }
|
|
inline
|
|
glm::mat4 const &
|
|
projection() const { return m_projection; }
|
|
inline
|
|
glm::mat4 &
|
|
projection() { return m_projection; }
|
|
inline
|
|
glm::mat4 const &
|
|
modelview() const { return m_modelview; }
|
|
inline
|
|
glm::mat4 &
|
|
modelview() { return m_modelview; }
|
|
inline
|
|
std::vector<glm::vec4> &
|
|
frustum_points() { return m_frustumpoints; }
|
|
// transforms provided set of clip space points to world space
|
|
template <class Iterator_>
|
|
void
|
|
transform_to_world( Iterator_ First, Iterator_ Last ) const {
|
|
std::for_each(
|
|
First, Last,
|
|
[this]( glm::vec4 &point ) {
|
|
// transform each point using the cached matrix...
|
|
point = this->m_inversetransformation * point;
|
|
// ...and scale by transformed w
|
|
point = glm::vec4{ glm::vec3{ point } / point.w, 1.f }; } ); }
|
|
// debug helper, draws shape of frustum in world space
|
|
void
|
|
draw( glm::vec3 const &Offset ) const;
|
|
|
|
private:
|
|
// members:
|
|
cFrustum m_frustum;
|
|
std::vector<glm::vec4> m_frustumpoints; // visualization helper; corners of defined frustum, in world space
|
|
glm::dvec3 m_position;
|
|
glm::mat4 m_projection;
|
|
glm::mat4 m_modelview;
|
|
glm::mat4 m_inversetransformation; // cached transformation to world space
|
|
};
|
|
|
|
//---------------------------------------------------------------------------
|