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added constexpr support for radar

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Orange
2026-07-05 05:53:28 +03:00
parent 9299ea8960
commit b4f4917aec
2 changed files with 16 additions and 3 deletions
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include/omath/algorithm/radar.hpp
+13 -2
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@@ -10,14 +10,25 @@ namespace omath::algorithm
template<class Camera, class FloatingType>
requires std::is_floating_point_v<FloatingType>
[[nodiscard]]
Vector2<float> world_to_radar(const Camera& camera, const Vector3<FloatingType>& position, const FloatingType scale)
constexpr Vector2<float> world_to_radar(const Camera& camera, const Vector3<FloatingType>& position, const FloatingType scale)
{
const auto look_at_angles = camera.calc_look_at_angles(position);
const auto current_angles = camera.get_view_angles();
if consteval
{
const auto right_yaw = current_angles.yaw
- camera.calc_look_at_angles(camera.get_origin() + camera.get_abs_right()).yaw
- decltype(current_angles.yaw)::from_degrees(90);
const auto sign = right_yaw.cos() < 0 ? -1.f : 1.f;
const auto yaw = current_angles.yaw - look_at_angles.yaw - decltype(current_angles.yaw)::from_degrees(90);
return omath::Vector2<float>(static_cast<float>(yaw.cos()) * sign, static_cast<float>(yaw.sin()))
* (camera.get_origin().distance_to(position) * scale);
}
static const auto sign = [&camera, &current_angles]
{
auto right_yaw = current_angles.yaw
const auto right_yaw = current_angles.yaw
- camera.calc_look_at_angles(camera.get_origin() + camera.get_abs_right()).yaw
- decltype(current_angles.yaw)::from_degrees(90);
return right_yaw.cos() < 0 ? -1.f : 1.f;
tests/general/unit_test_projection.cpp
+3 -1
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@@ -1,6 +1,7 @@
//
// Created by Vlad on 27.08.2024.
//
#include "omath/algorithm/radar.hpp"
#include "omath/engines/unity_engine/camera.hpp"
#include <complex>
#include <gtest/gtest.h>
@@ -1283,8 +1284,9 @@ TEST(UnitTestProjection, TriangleFarToSideCulled)
TEST(UnitTestProjection, TriangleStraddlingFrustumNotCulled)
{
constexpr auto fov = omath::projection::FieldOfView::from_degrees(90.f);
const auto cam = omath::source_engine::Camera({0.f, 0.f, 0.f}, {}, {1920.f, 1080.f}, fov, 0.01f, 1000.f);
constexpr auto cam = omath::source_engine::Camera({0.f, 0.f, 0.f}, {}, {1920.f, 1080.f}, fov, 0.01f, 1000.f);
constexpr auto position = omath::algorithm::world_to_radar(cam, {-1.f, 0.f, 0.f}, 0.1f);
// Large triangle with vertices on both sides of the frustum — should not be culled
const omath::Triangle<omath::Vector3<float>> tri{{100.f, 0.f, 0.f}, {100.f, 5000.f, 0.f}, {100.f, 0.f, 5000.f}};
EXPECT_FALSE(cam.is_culled_by_frustum(tri));