add ray intersection checks

2024-10-29 12:41:07 +02:00
parent 5ece0acc77
commit ced45f7b72
4 changed files with 512 additions and 0 deletions
--- a/openVulkanoCpp/Scene/Ray.hpp
+++ b/openVulkanoCpp/Scene/Ray.hpp
@@ -0,0 +1,55 @@
+/*
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+#pragma once
+
+#include "Math/Math.hpp"
+#include "Math/AABB.hpp"
+#include <optional>
+
+namespace OpenVulkano::Scene
+{
+
+	struct RayHit
+	{
+		Math::Vector3f point; 
+		Math::Vector3f normal;
+		float distance;
+		bool operator==(const RayHit& other) const
+		{ 
+			return point == other.point && normal == other.normal && distance == other.distance;
+		}
+		bool operator!=(const RayHit& other) const { return !((*this) == other); }
+	};
+
+	class Ray
+	{
+	public:
+		Ray() : m_origin(0), m_dir(0) {}
+		Ray(const Math::Vector3f& origin, const Math::Vector3f& dir)
+		    : m_origin(origin), m_dir(Math::Utils::normalize(dir))
+		{
+		}
+		void SetPosition(const Math::Vector3f& origin) { m_origin = origin; }
+		void SetDir(const Math::Vector3f& dir) { m_dir = dir; }
+		std::optional<RayHit> IntersectSphere(const Math::Vector3f& center, float radius) const;
+		int IntersectSphere(const Math::Vector3f& center, float radius, RayHit& p1, RayHit& p2) const;
+		std::optional<RayHit> IntersectTriangle(const Math::Vector3f& v0, const Math::Vector3f& v1,
+		                                        const Math::Vector3f& v2) const;
+		std::optional<RayHit> IntersectQuad(const Math::Vector3f& v0, const Math::Vector3f& v1,
+		                                    const Math::Vector3f& v2, const Math::Vector3f& v3) const;
+		std::optional<RayHit> IntersectAABB(const Math::AABB& bbox) const;
+		int IntersectAABB(const Math::AABB& bbox, RayHit& p1, RayHit& p2) const;
+		std::optional<RayHit> IntersectPlane(const Math::Vector3f& pOrigin, const Math::Vector3f& pNorm) const;
+		[[nodiscard]] Math::Vector3f& GetOrigin() { return m_origin; }
+		[[nodiscard]] Math::Vector3f& GetDir() { return m_dir; }
+		[[nodiscard]] const Math::Vector3f& GetOrigin() const { return m_origin; }
+		[[nodiscard]] const Math::Vector3f& GetDir() const { return m_dir; }
+	private:
+		Math::Vector3f m_origin;
+		Math::Vector3f m_dir;
+	};
+}