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42 lines
1.8 KiB
C++
42 lines
1.8 KiB
C++
//
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// Created by Vlad on 8/10/2025.
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//
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#pragma once
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#include "omath/engines/opengl_engine/formulas.hpp"
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#include "omath/internal/constexpr_math.hpp"
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#include "omath/projection/camera.hpp"
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namespace omath::opengl_engine
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{
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class CameraTrait final
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{
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public:
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[[nodiscard("look-at angle result should not be discarded")]]
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constexpr static ViewAngles calc_look_at_angle(const Vector3<float>& cam_origin,
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const Vector3<float>& look_at) noexcept
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{
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const auto direction = (look_at - cam_origin).normalized();
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return {PitchAngle::from_radians(internal::asin(direction.y)),
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YawAngle::from_radians(-internal::atan2(direction.x, -direction.z)), RollAngle::from_radians(0.f)};
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}
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[[nodiscard("view matrix result should not be discarded")]]
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constexpr static Mat4X4 calc_view_matrix(const ViewAngles& angles, const Vector3<float>& cam_origin) noexcept
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{
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return opengl_engine::calc_view_matrix(angles, cam_origin);
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}
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[[nodiscard("projection matrix result should not be discarded")]]
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constexpr static Mat4X4 calc_projection_matrix(const projection::FieldOfView& fov,
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const projection::ViewPort& view_port, const float near_plane,
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const float far_plane,
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const NDCDepthRange ndc_depth_range) noexcept
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{
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return calc_perspective_projection_matrix(fov.as_degrees(), view_port.aspect_ratio(), near_plane, far_plane,
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ndc_depth_range);
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}
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};
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} // namespace omath::opengl_engine
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