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Add orthographic & window cameras

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This commit is contained in:
Nikita Lisitsa 2020-08-30 08:46:42 +03:00
parent fd26d8a3a3
commit 4d6f5d6f85
2 changed files with 40 additions and 0 deletions
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19
libs/geom/include/psemek/geom/camera.hpp
View file

@ -3,6 +3,7 @@
#include <psemek/geom/vector.hpp>
#include <psemek/geom/point.hpp>
#include <psemek/geom/matrix.hpp>
#include <psemek/geom/box.hpp>
namespace psemek::geom
{
@ -31,6 +32,24 @@ namespace psemek::geom
virtual ~camera() = default;
};
struct window_camera
: camera
{
float width, height;
matrix<float, 4, 4> view() const override;
matrix<float, 4, 4> projection() const override;
};
struct orthographic_camera
: camera
{
geom::box<float_t, 3> box;
matrix<float, 4, 4> view() const override;
matrix<float, 4, 4> projection() const override;
};
struct perspective_camera
: camera
{

21
libs/geom/source/camera.cpp
View file

@ -1,5 +1,6 @@
#include <psemek/geom/camera.hpp>
#include <psemek/geom/gauss.hpp>
#include <psemek/geom/orthographic.hpp>
#include <psemek/geom/perspective.hpp>
#include <psemek/geom/translation.hpp>
#include <psemek/geom/rotation.hpp>
@ -68,6 +69,26 @@ namespace psemek::geom
return p;
}
matrix<float, 4, 4> window_camera::view() const
{
return matrix<float, 4, 4>::identity();
}
matrix<float, 4, 4> window_camera::projection() const
{
return orthographic<float, 3>({{ {0.f, width}, {height, 0.f}, {-1.f, 1.f} }}).homogeneous_matrix();
}
matrix<float, 4, 4> orthographic_camera::view() const
{
return matrix<float, 4, 4>::identity();
}
matrix<float, 4, 4> orthographic_camera::projection() const
{
return orthographic<float, 3>(box).homogeneous_matrix();
}
matrix<float, 4, 4> perspective_camera::projection() const
{
return perspective<float, 3>(fov_x, fov_y, near_clip, far_clip).homogeneous_matrix();