ellipsoid.h

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#pragma once
 
#include <optional>
#include <glm/vec3.hpp>
 
namespace Saga {
    namespace Geometry {
 
        std::optional<float> rayEllipsoidIntersection(const glm::vec3& rayOrigin, const glm::vec3& rayDirection, const glm::vec3& position, const glm::vec3& radius);
 
        std::optional<float> rayUnitSphereAtOriginIntersection(const glm::vec3& origin, const glm::vec3& rayDirection);
 
        std::optional<float> unitSphereTriangleCollision(const glm::vec3& pos, const glm::vec3& dir, const glm::vec3& a, const glm::vec3& b, const glm::vec3& c);
 
        std::optional<float> movingEllipsoidEllipsoidIntersection(
            const glm::vec3 &ellipsoidPos0, const glm::vec3 &ellipsoidDir0, const glm::vec3 &ellipsoidRadius0,
            const glm::vec3 &ellipsoidPos1, const glm::vec3 &ellipsoidRadius1);
 
        std::optional<float> ellipsoidTriangleCollision(const glm::vec3& ellipsoidPos, const glm::vec3& ellipsoidDir, 
            const glm::vec3& ellipsoidRadius, const glm::vec3& a, const glm::vec3& b, const glm::vec3& c);
 
        std::optional<float> unitSphereEdgeCollision(const glm::vec3& pos, const glm::vec3& dir,
                const glm::vec3& c, const glm::vec3& d);
    }
}