From a556b45abf18f1bd509daaf63b66b7d55e9fd291 Mon Sep 17 00:00:00 2001
From: jjesswan <jessica_wan@brown.edu>
Date: Mon, 22 Apr 2024 21:56:26 -0400
Subject: add engine version

---
 .../CollisionComponents/boundingtriangle.h         | 68 ++++++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100644 engine-ocean/Game/Components/CollisionComponents/boundingtriangle.h

(limited to 'engine-ocean/Game/Components/CollisionComponents/boundingtriangle.h')

diff --git a/engine-ocean/Game/Components/CollisionComponents/boundingtriangle.h b/engine-ocean/Game/Components/CollisionComponents/boundingtriangle.h
new file mode 100644
index 0000000..0263007
--- /dev/null
+++ b/engine-ocean/Game/Components/CollisionComponents/boundingtriangle.h
@@ -0,0 +1,68 @@
+#ifndef BOUNDINGTRIANGLE_H
+#define BOUNDINGTRIANGLE_H
+#include "Graphics/modeltransform.h"
+#include "glm/glm.hpp"
+#include <set>
+#include <vector>
+#include "BoundingShape.h"
+
+struct Bounds3f {
+    glm::vec3 min;
+    glm::vec3 max;
+};
+
+struct Triangle{
+    glm::vec3 vertexA; // one vertex
+    glm::vec3 vertexB;
+    glm::vec3 vertexC;
+
+    glm::vec3 edge1; // two edges
+    glm::vec3 edge2;
+
+    glm::vec3 normal;// = glm::cross(edge1, edge2);
+    Bounds3f bounds;
+
+
+};
+
+class BoundingTriangle : public BoundingShape
+{
+public:
+    BoundingTriangle(const std::vector<glm::vec3> &obj_data,
+                     const std::shared_ptr<ModelTransform> &mt,
+                     bool isGround = false);
+    std::vector<Triangle> getTriangleData();
+
+    Bounds3f getMeshBounds();
+    std::vector<glm::vec3> getSurfacePoints();
+    glm::vec3 getRandomSurfacePos();
+
+
+
+private:
+    void addTriangle(const glm::vec3 &vertexA, const glm::vec3 &vertexB, const glm::vec3 &vertexC);
+    void populateTriangleData(const std::vector<glm::vec3> &obj_data);
+    void calculateBounds(const std::vector<glm::vec3> &obj_data);
+    Bounds3f calculateTriangleBounds(const glm::vec3 &vertexA, const glm::vec3 &vertexB, const glm::vec3 &vertexC);
+
+    float getArea(const glm::vec3 &A, const glm::vec3 &B, const glm::vec3 &C);
+    glm::vec3 getCentroid(const glm::vec3 &A, const glm::vec3 &B, const glm::vec3 &C);
+    void tesselateTriangle(const glm::vec3 &A, const glm::vec3 &B, const glm::vec3 &C);
+
+
+    int m_datasize = 0;
+
+
+
+
+
+    std::vector<Triangle> m_triangles;
+    std::shared_ptr<ModelTransform> obj_mt;
+    std::set<glm::vec3> m_unique_surface_points;
+    std::vector<glm::vec3> m_surface_points;
+    bool m_isGround = false;
+
+    float min_x, min_y, min_z, max_x, max_y, max_z;
+};
+
+#endif // BOUNDINGTRIANGLE_H
-- 
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