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updated for unreal

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Orange
2026-04-25 04:42:52 +03:00
parent 180f2f2afa
commit 0487e285ef
12 changed files with 104 additions and 96 deletions
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24
source/engines/unreal_engine/formulas.cpp
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@@ -4,27 +4,27 @@
#include "omath/engines/unreal_engine/formulas.hpp"
namespace omath::unreal_engine
{
Vector3<float> forward_vector(const ViewAngles& angles) noexcept
Vector3<double> forward_vector(const ViewAngles& angles) noexcept
{
const auto vec = rotation_matrix(angles) * mat_column_from_vector(k_abs_forward);
return {vec.at(0, 0), vec.at(1, 0), vec.at(2, 0)};
}
Vector3<float> right_vector(const ViewAngles& angles) noexcept
Vector3<double> right_vector(const ViewAngles& angles) noexcept
{
const auto vec = rotation_matrix(angles) * mat_column_from_vector(k_abs_right);
return {vec.at(0, 0), vec.at(1, 0), vec.at(2, 0)};
}
Vector3<float> up_vector(const ViewAngles& angles) noexcept
Vector3<double> up_vector(const ViewAngles& angles) noexcept
{
const auto vec = rotation_matrix(angles) * mat_column_from_vector(k_abs_up);
return {vec.at(0, 0), vec.at(1, 0), vec.at(2, 0)};
}
Mat4X4 calc_view_matrix(const ViewAngles& angles, const Vector3<float>& cam_origin) noexcept
Mat4X4 calc_view_matrix(const ViewAngles& angles, const Vector3<double>& cam_origin) noexcept
{
return mat_camera_view<float, MatStoreType::ROW_MAJOR>(forward_vector(angles), right_vector(angles),
return mat_camera_view<double, MatStoreType::ROW_MAJOR>(forward_vector(angles), right_vector(angles),
up_vector(angles), cam_origin);
}
Mat4X4 rotation_matrix(const ViewAngles& angles) noexcept
@@ -33,24 +33,24 @@ namespace omath::unreal_engine
// frame), which for column-vector composition is Rz·Ry·Rx.
// Pitch and roll axes in omath spin opposite to UE's convention, so
// both carry a sign flip.
return mat_rotation_axis_z<float, MatStoreType::ROW_MAJOR>(angles.yaw)
* mat_rotation_axis_y<float, MatStoreType::ROW_MAJOR>(-angles.pitch)
* mat_rotation_axis_x<float, MatStoreType::ROW_MAJOR>(-angles.roll);
return mat_rotation_axis_z<double, MatStoreType::ROW_MAJOR>(angles.yaw)
* mat_rotation_axis_y<double, MatStoreType::ROW_MAJOR>(-angles.pitch)
* mat_rotation_axis_x<double, MatStoreType::ROW_MAJOR>(-angles.roll);
}
Mat4X4 calc_perspective_projection_matrix(const float field_of_view, const float aspect_ratio, const float near,
const float far, const NDCDepthRange ndc_depth_range) noexcept
Mat4X4 calc_perspective_projection_matrix(const double field_of_view, const double aspect_ratio, const double near,
const double far, const NDCDepthRange ndc_depth_range) noexcept
{
// UE stores horizontal FOV in FMinimalViewInfo — use the left-handed
// horizontal-FOV builder directly.
if (ndc_depth_range == NDCDepthRange::ZERO_TO_ONE)
return mat_perspective_left_handed_horizontal_fov<
float, MatStoreType::ROW_MAJOR, NDCDepthRange::ZERO_TO_ONE>(
double, MatStoreType::ROW_MAJOR, NDCDepthRange::ZERO_TO_ONE>(
field_of_view, aspect_ratio, near, far);
if (ndc_depth_range == NDCDepthRange::NEGATIVE_ONE_TO_ONE)
return mat_perspective_left_handed_horizontal_fov<
float, MatStoreType::ROW_MAJOR, NDCDepthRange::NEGATIVE_ONE_TO_ONE>(
double, MatStoreType::ROW_MAJOR, NDCDepthRange::NEGATIVE_ONE_TO_ONE>(
field_of_view, aspect_ratio, near, far);
std::unreachable();
}

8
source/engines/unreal_engine/traits/camera_trait.cpp
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@@ -6,20 +6,20 @@
namespace omath::unreal_engine
{
ViewAngles CameraTrait::calc_look_at_angle(const Vector3<float>& cam_origin, const Vector3<float>& look_at) noexcept
ViewAngles CameraTrait::calc_look_at_angle(const Vector3<double>& cam_origin, const Vector3<double>& look_at) noexcept
{
const auto direction = (look_at - cam_origin).normalized();
return {PitchAngle::from_radians(std::asin(direction.z)),
YawAngle::from_radians(std::atan2(direction.y, direction.x)), RollAngle::from_radians(0.f)};
}
Mat4X4 CameraTrait::calc_view_matrix(const ViewAngles& angles, const Vector3<float>& cam_origin) noexcept
Mat4X4 CameraTrait::calc_view_matrix(const ViewAngles& angles, const Vector3<double>& cam_origin) noexcept
{
return unreal_engine::calc_view_matrix(angles, cam_origin);
}
Mat4X4 CameraTrait::calc_projection_matrix(const projection::FieldOfView& fov,
const projection::ViewPort& view_port, const float near,
const float far, const NDCDepthRange ndc_depth_range) noexcept
const projection::ViewPort& view_port, const double near,
const double far, const NDCDepthRange ndc_depth_range) noexcept
{
return calc_perspective_projection_matrix(fov.as_degrees(), view_port.aspect_ratio(), near, far,
ndc_depth_range);