mirror of
https://github.com/Ed94/DuctTaped_GL.git
synced 2024-09-20 13:27:32 -07:00
116 lines
3.0 KiB
C++
116 lines
3.0 KiB
C++
#pragma once
|
|
|
|
|
|
#include "DGL_FundamentalTypes.hpp"
|
|
#include "DGL_MiscTypes.hpp"
|
|
|
|
|
|
|
|
#include "Cpp_Alias.hpp"
|
|
|
|
|
|
|
|
namespace GL
|
|
{
|
|
using CoordSpace = Matrix4x4;
|
|
using Projection = Matrix4x4;
|
|
|
|
|
|
// Function
|
|
|
|
template<typename Type>
|
|
sfn CreateLookAtView(const Generic::Vector3<Type> _viewPosition, const Generic::Vector3<Type> _lookAtPosition, const Generic::Vector3<Type> _upDirection) -> Matrix4x4
|
|
{
|
|
return glm::lookAt(_viewPosition, _lookAtPosition, _upDirection);
|
|
}
|
|
|
|
sfn CreateOrthographic(gFloat _leftScreenCoord, gFloat _rightScreenCoord, gFloat _bottomScreenCoord, gFloat _topScreenCoord, gFloat _nearPlane, gFloat _farPlane)
|
|
{
|
|
return glm::ortho(_leftScreenCoord, _rightScreenCoord, _bottomScreenCoord, _topScreenCoord, _nearPlane, _farPlane);
|
|
}
|
|
|
|
template<typename FloatType>
|
|
sfn CreatePerspective(const FloatType _fieldOfView, const FloatType _aspectRatio, const FloatType _nearPlane, const FloatType _farPlane)
|
|
{
|
|
return glm::perspective(_fieldOfView, _aspectRatio, _nearPlane, _farPlane);
|
|
}
|
|
|
|
sfn Rotate(const Matrix4x4 _matrix, gFloat _rotationAngleAmount, Vector3 _axis) -> Matrix4x4
|
|
{
|
|
return glm::rotate(_matrix, _rotationAngleAmount, _axis);
|
|
}
|
|
|
|
template<typename Type>
|
|
sfn ToRadians(const Ref(Type) _degrees) -> Type
|
|
{
|
|
return glm::radians(_degrees);
|
|
}
|
|
|
|
struct ClippingPlanes
|
|
{
|
|
gFloat Near, Far;
|
|
|
|
ClippingPlanes(gFloat _near, gFloat _far) : Near(_near), Far(_far) {};
|
|
};
|
|
|
|
namespace DefaultSpace
|
|
{
|
|
gFloat
|
|
AspectRatio = 16.0f / 10.0f,
|
|
FieldOfView = 90.0f ,
|
|
NearClippingPlane = 0.1f ,
|
|
FarClippingPlane = 100.0f ;
|
|
|
|
Vector3 CameraPosition(-3, 0, 0),
|
|
LookAtPosition( 0, 0, 0),
|
|
UpDirection ( 0, 1, 0) ;
|
|
|
|
gFloat ScreenWidth = 720.0f, ScreenHeight = 450.0f;
|
|
}
|
|
|
|
struct Camera
|
|
{
|
|
gFloat AspectRatio, FieldOfView;
|
|
|
|
ClippingPlanes ClipSpace;
|
|
|
|
CoordSpace ViewPort;
|
|
|
|
Projection Orthographic, Perspective;
|
|
|
|
Vector3 Position, LookAtPosition, UpDirection;
|
|
|
|
|
|
Camera
|
|
(
|
|
gFloat _aspectRatio ,
|
|
gFloat _fieldOfView ,
|
|
ClippingPlanes _clippingPlanes,
|
|
Vector3 _position ,
|
|
Vector3 _lookAtPosition,
|
|
Vector3 _upDirection
|
|
) :
|
|
AspectRatio (_aspectRatio ),
|
|
FieldOfView (_fieldOfView ),
|
|
ClipSpace (_clippingPlanes),
|
|
Position (_position ),
|
|
LookAtPosition(_lookAtPosition),
|
|
UpDirection (_upDirection )
|
|
{
|
|
ViewPort = CreateLookAtView(Position, LookAtPosition, UpDirection);
|
|
|
|
Orthographic = CreateOrthographic(0.0f, DefaultSpace::ScreenWidth, 0.0f, DefaultSpace::ScreenHeight, ClipSpace.Near, ClipSpace.Far);
|
|
|
|
Perspective = CreatePerspective<gFloat>(ToRadians(FieldOfView), AspectRatio, ClipSpace.Near, ClipSpace.Far);
|
|
}
|
|
};
|
|
|
|
namespace DefaultSpace
|
|
{
|
|
Camera WorldCamera(AspectRatio, FieldOfView, ClippingPlanes(NearClippingPlane, FarClippingPlane), CameraPosition, LookAtPosition, UpDirection);
|
|
|
|
CoordSpace WorldSpace(Matrix4x4(1.0f));
|
|
|
|
CoordSpace Screenspace = WorldCamera.Perspective * WorldCamera.ViewPort * WorldSpace;
|
|
}
|
|
} |