Octtree, bounding

HydraEngine/source/ecs/components/HydraMeshComponent.h

@@ -2,13 +2,15 @@
 #define HYDRAECSMESHCOMPONENT
 
 #include "../../engine/HydraObject.h"
-
+#include <GLMIncludes.h>
 
 struct HydraMeshComponent
 {
     HydraID mesh_id = INVALID_HYDRA_ID;    
     HydraID vertex_buffer_id = INVALID_HYDRA_ID;        
     HYDRA_STATE mesh_state = HYDRA_STATE::Empty;
+    glm::vec3 origin {};
+    glm::vec3 extent {};
 };
 
 

HydraEngine/source/ecs/systems/HydraMeshSystem.cpp

@@ -24,6 +24,40 @@ void HydraMeshSystem::InitialiseComponent(HydraID entity_id)
 
     HydraMeshManager* mesh_man = GetEngine()->MeshManager();
     HydraMesh* mesh = mesh_man->GetMesh(mesh_comp.mesh_id);
+    
+    if(mesh->vertexes.size() > 0)
+    {
+        mesh_comp.origin = glm::vec3(mesh->vertexes[0].position[0], mesh->vertexes[0].position[1], mesh->vertexes[0].position[2]);
+        mesh_comp.extent = mesh_comp.origin;
+        for(StandardVertex vert : mesh->vertexes)
+        {
+            if(vert.position[0] < mesh_comp.origin.x)
+            {
+                mesh_comp.origin.x = vert.position[0];
+            }
+            if(vert.position[1] < mesh_comp.origin.y)
+            {
+                mesh_comp.origin.y = vert.position[1];
+            }
+            if(vert.position[2] < mesh_comp.origin.z)
+            {
+                mesh_comp.origin.z = vert.position[2];
+            }
+            if(vert.position[0] > mesh_comp.extent.x)
+            {
+                mesh_comp.extent.x = vert.position[0];
+            }
+            if(vert.position[1] > mesh_comp.extent.y)
+            {
+                mesh_comp.extent.y = vert.position[1];
+            }
+            if(vert.position[2] > mesh_comp.extent.z)
+            {
+                mesh_comp.extent.z = vert.position[2];
+            }
+        }
+    }   
+
 
     uint32_t vertex_buffer_size = sizeof(StandardVertex) * mesh->vertexes.size();
     uint32_t index_buffer_size = sizeof(uint32_t) * mesh->indexes.size();

HydraEngine/source/octtree/HydraOcttree.h

@@ -0,0 +1,22 @@
+#ifndef HYDRAOCTTREE
+#define HYDRAOCTTREE
+
+#include "../engine/HydraEngine.h"
+#include "../engine/HydraObject.h"
+#include "HydraOcttreeElement.h"
+
+class HydraOcttree : public HydraObject
+{
+    public:
+        void Intialise();
+        void AddEntity(HydraID entity_id);
+        void RemoveEntity(HydraID entity_id);
+        void UpdateEntity(HydraID entity_id);
+    private:
+        HydraOcttreeElement m_root {};
+        
+
+        
+};
+
+#endif /* HYDRAOCTTREE */

HydraEngine/source/octtree/HydraOcttreeElement.h

@@ -0,0 +1,12 @@
+#ifndef HYDRAOCTTREEELEMENT
+#define HYDRAOCTTREEELEMENT
+#include "../engine/HydraObject.h"
+
+struct HydraOcttreeElement 
+{
+    HydraID element_id = INVALID_HYDRA_ID;
+    double origin[4] {};
+    double dimension = 0;
+};
+
+#endif /* HYDRAOCTTREEELEMENT */