83 lines
2.1 KiB
C++
83 lines
2.1 KiB
C++
#include <camera/scene.hpp>
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#include <math/algebra.hpp>
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#include <math/trig.hpp>
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namespace lt {
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SceneCamera::SceneCamera()
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: m_orthographic_specification { .size = 1000.0f, .near_plane = -1.0f, .far_plane = 10000.0f }
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, m_perspective_specification { .vertical_fov = math::radians(45.0f),
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.near_plane = 0.01f,
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.far_plane = 10000.0f }
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, m_aspect_ratio(16.0f / 9.0f)
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{
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calculate_projection();
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}
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void SceneCamera::set_viewport_size(unsigned int width, unsigned int height)
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{
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m_aspect_ratio = static_cast<float>(width) / static_cast<float>(height);
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calculate_projection();
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}
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void SceneCamera::set_projection_type(ProjectionType projection_type)
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{
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m_projection_type = projection_type;
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calculate_projection();
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}
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void SceneCamera::set_orthographic_size(float size)
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{
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m_orthographic_specification.size = size;
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calculate_projection();
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}
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void SceneCamera::set_orthographic_far_plane(float far_plane)
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{
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m_orthographic_specification.far_plane = far_plane;
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calculate_projection();
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}
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void SceneCamera::set_orthographic_near_plane(float near_plane)
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{
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m_orthographic_specification.near_plane = near_plane;
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calculate_projection();
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}
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void SceneCamera::set_perspective_vertical_fov(float vertical_fov)
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{
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m_perspective_specification.vertical_fov = vertical_fov;
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calculate_projection();
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}
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void SceneCamera::set_perspective_far_plane(float far_plane)
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{
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m_perspective_specification.far_plane = far_plane;
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calculate_projection();
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}
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void SceneCamera::set_perspective_near_plane(float near_plane)
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{
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m_perspective_specification.near_plane = near_plane;
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calculate_projection();
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}
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void SceneCamera::calculate_projection()
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{
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// TODO(Light): implement ortho perspective
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if (m_projection_type == ProjectionType::Orthographic)
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{
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// throw std::runtime_error { "ortho perspective not supported yet" };
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}
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// defaults to perspective for now...
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m_projection = math::perspective(
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m_perspective_specification.vertical_fov,
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m_aspect_ratio,
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m_perspective_specification.near_plane,
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m_perspective_specification.far_plane
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);
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}
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} // namespace lt
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