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34 lines
1.3 KiB
C++
34 lines
1.3 KiB
C++
//
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// Created by Orange on 12/23/2024.
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//
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#include "omath/engines/opengl_engine/camera.hpp"
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#include "omath/engines/opengl_engine/formulas.hpp"
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namespace omath::opengl_engine
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{
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Camera::Camera(const Vector3<float>& position, const ViewAngles& view_angles, const projection::ViewPort& view_port,
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const Angle<float, 0.f, 180.f, AngleFlags::Clamped>& fov, const float near, const float far)
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: projection::Camera<Mat4X4, ViewAngles>(position, view_angles, view_port, fov, near, far)
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{
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}
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void Camera::look_at([[maybe_unused]] const Vector3<float>& target)
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{
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const float distance = m_origin.distance_to(target);
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const auto delta = target - m_origin;
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m_view_angles.pitch = PitchAngle::from_radians(std::asin(delta.z / distance));
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m_view_angles.yaw = -YawAngle::from_radians(std::atan2(delta.y, delta.x));
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m_view_angles.roll = RollAngle::from_radians(0.f);
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}
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Mat4X4 Camera::calc_view_matrix() const
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{
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return opengl_engine::calc_view_matrix(m_view_angles, m_origin);
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}
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Mat4X4 Camera::calc_projection_matrix() const
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{
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return calc_perspective_projection_matrix(m_field_of_view.as_degrees(), m_view_port.aspect_ratio(),
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m_near_plane_distance, m_far_plane_distance);
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}
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} // namespace omath::opengl_engine
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