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made constexpr cryengine camera & fromulas

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Orange
2026-06-12 00:52:22 +03:00
parent 4a9125549f
commit 5f14510e5b
6 changed files with 195 additions and 130 deletions
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include/omath/engines/cry_engine/traits/camera_trait.hpp
+26 -6
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@@ -4,21 +4,41 @@
#pragma once
#include "omath/engines/cry_engine/formulas.hpp"
#include "omath/internal/optional_constexpr_math.hpp"
#include "omath/projection/camera.hpp"
namespace omath::cry_engine
{
class CameraTrait final
{
public:
[[nodiscard]]
static ViewAngles calc_look_at_angle(const Vector3<float>& cam_origin, const Vector3<float>& look_at) noexcept;
OMATH_CONSTEXPR static ViewAngles calc_look_at_angle(const Vector3<float>& cam_origin,
const Vector3<float>& look_at) noexcept
{
const auto direction = (look_at - cam_origin).normalized();
#ifdef OMATH_USE_GCEM
return {PitchAngle::from_radians(gcem::asin(direction.z)),
YawAngle::from_radians(-gcem::atan2(direction.x, direction.y)), RollAngle::from_radians(0.f)};
#else
return {PitchAngle::from_radians(std::asin(direction.z)),
YawAngle::from_radians(-std::atan2(direction.x, direction.y)), RollAngle::from_radians(0.f)};
#endif
}
[[nodiscard]]
static Mat4X4 calc_view_matrix(const ViewAngles& angles, const Vector3<float>& cam_origin) noexcept;
OMATH_CONSTEXPR static Mat4X4 calc_view_matrix(const ViewAngles& angles,
const Vector3<float>& cam_origin) noexcept
{
return cry_engine::calc_view_matrix(angles, cam_origin);
}
[[nodiscard]]
static Mat4X4 calc_projection_matrix(const projection::FieldOfView& fov, const projection::ViewPort& view_port,
float near, float far, NDCDepthRange ndc_depth_range) noexcept;
OMATH_CONSTEXPR static Mat4X4
calc_projection_matrix(const projection::FieldOfView& fov, const projection::ViewPort& view_port,
const float near, const float far, const NDCDepthRange ndc_depth_range) noexcept
{
return calc_perspective_projection_matrix(fov.as_degrees(), view_port.aspect_ratio(), near, far,
ndc_depth_range);
}
};
} // namespace omath::cry_engine
} // namespace omath::cry_engine